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Red Hat OpenShift Container Platform provides developers and IT organizations with a hybrid cloud application platform for deploying both new and existing applications on secure, scalable resources with minimal configuration and management overhead. OpenShift Container Platform supports a wide selection of programming languages and frameworks, such as Java, JavaScript, Python, Ruby, and PHP.

Built on Red Hat Enterprise Linux (RHEL) and Kubernetes, OpenShift Container Platform provides a more secure and scalable multitenant operating system for today’s enterprise-class applications, while delivering integrated application runtimes and libraries. OpenShift Container Platform enables organizations to meet security, privacy, compliance, and governance requirements.

About this release

OpenShift Container Platform (RHSA-2022:7399) is now available. This release uses Kubernetes 1.25 with CRI-O runtime. New features, changes, and known issues that pertain to OpenShift Container Platform 4.12 are included in this topic.

OpenShift Container Platform 4.12 clusters are available at https://console.redhat.com/openshift. With the Red Hat OpenShift Cluster Manager application for OpenShift Container Platform, you can deploy OpenShift clusters to either on-premises or cloud environments.

OpenShift Container Platform 4.12 is supported on Red Hat Enterprise Linux (RHEL) 8.6-8.9 as well as on Red Hat Enterprise Linux CoreOS (RHCOS) 4.12.

You must use RHCOS machines for the control plane, and you can use either RHCOS or RHEL for compute machines.

Starting with OpenShift Container Platform 4.12 an additional six months of Extended Update Support (EUS) phase on even numbered releases from 18 months to two years. For more information, see the Red Hat OpenShift Container Platform Life Cycle Policy.

OpenShift Container Platform 4.8 is an Extended Update Support (EUS) release. More information on Red Hat OpenShift EUS is available in OpenShift Life Cycle and OpenShift EUS Overview.

Maintenance support ends for version 4.8 in January 2023 and goes to extended life phase. For more information, see the Red Hat OpenShift Container Platform Life Cycle Policy.

OpenShift Container Platform layered and dependent component support and compatibility

The scope of support for layered and dependent components of OpenShift Container Platform changes independently of the OpenShift Container Platform version. To determine the current support status and compatibility for an add-on, refer to its release notes. For more information, see the Red Hat OpenShift Container Platform Life Cycle Policy.

New features and enhancements

This release adds improvements related to the following components and concepts.

Red Hat Enterprise Linux CoreOS (RHCOS)

Default consoles for new clusters are now determined by the installation platform

Red Hat Enterprise Linux CoreOS (RHCOS) nodes installed from an OpenShift Container Platform 4.12 boot image now use a platform-specific default console. The default consoles on cloud platforms correspond to the specific system consoles expected by that cloud provider. VMware and OpenStack images now use a primary graphical console and a secondary serial console. Other bare metal installations now use only the graphical console by default, and do not enable a serial console. Installations performed with coreos-installer can override existing defaults and enable the serial console.

Existing nodes are not affected. New nodes on existing clusters are not likely to be affected because they are typically installed from the boot image that was originally used to install the cluster.

For information about how to enable the serial console, see the following documentation:

IBM Secure Execution on IBM Z and LinuxONE (Technology Preview)

OpenShift Container Platform now supports configuring Red Hat Enterprise Linux CoreOS (RHCOS) nodes for IBM Secure Execution on IBM Z and LinuxONE (s390x architecture) as a Technology Preview feature. IBM Secure Execution is a hardware enhancement that protects memory boundaries for KVM guests. IBM Secure Execution provides the highest level of isolation and security for cluster workloads, and you can enable it by using an IBM Secure Execution-ready QCOW2 boot image.

To use IBM Secure Execution, you must have host keys for your host machine(s) and they must be specified in your Ignition configuration file. IBM Secure Execution automatically encrypts your boot volumes using LUKS encryption.

For more information, see Installing RHCOS using IBM Secure Execution.

RHCOS now uses RHEL 8.6

RHCOS now uses Red Hat Enterprise Linux (RHEL) 8.6 packages in OpenShift Container Platform 4.12. This enables you to have the latest fixes, features, and enhancements, as well as the latest hardware support and driver updates. OpenShift Container Platform 4.10 is an Extended Update Support (EUS) release that will continue to use RHEL 8.4 EUS packages for the entirety of its lifecycle.

Installation and upgrade

Assisted Installer SaaS provides platform integration support for Nutanix

Assisted Installer SaaS on console.redhat.com supports installation of OpenShift Container Platform on the Nutanix platform with Machine API integration using either the Assisted Installer user interface or the REST API. Integration enables Nutanix Prism users to manage their infrastructure from a single interface, and enables auto-scaling. There are a few additional installation steps to enable Nutanix integration with Assisted Installer SaaS. See the Assisted Installer documentation for details.

Specify the load balancer type in AWS during installation

Beginning with OpenShift Container Platform 4.12, you can specify either Network Load Balancer (NLB) or Classic as a persistent load balancer type in AWS during installation. Afterwards, if an Ingress Controller is deleted, the load balancer type persists with the lbType configured during installation.

Extend worker nodes to the edge of AWS when installing into an existing Virtual Private Cloud (VPC) with Local Zone subnets.

With this update you can install OpenShift Container Platform to an existing VPC with installer-provisioned infrastructure, extending the worker nodes to Local Zones subnets. The installation program will provision worker nodes on the edge of the AWS network that are specifically designated for user applications by using NoSchedule taints. Applications deployed on the Local Zones locations deliver low latency for end users.

For more information, see Installing a cluster using AWS Local Zones.

Google Cloud Platform Marketplace offering

OpenShift Container Platform is now available on the GCP Marketplace. Installing an OpenShift Container Platform with a GCP Marketplace image lets you create self-managed cluster deployments that are billed on pay-per-use basis (hourly, per core) through GCP, while still being supported directly by Red Hat.

For more information about installing using installer-provisioned infrastructure, see Using a GCP Marketplace image. For more information about installing a using user-provisioned infrastructure, see Creating additional worker machines in GCP.

Troubleshooting bootstrap failures during installation on GCP and Azure

The installer now gathers serial console logs from the bootstrap and control plane hosts on GCP and Azure. This log data is added to the standard bootstrap log bundle.

For more information, see Troubleshooting installation issues.

IBM Cloud VPC general availability

IBM Cloud VPC is now generally available in OpenShift Container Platform 4.12.

For more information about installing a cluster, see Preparing to install on IBM Cloud VPC.

Required administrator acknowledgment when upgrading from OpenShift Container Platform 4.11 to 4.12

OpenShift Container Platform 4.12 uses Kubernetes 1.25, which removed several deprecated APIs.

A cluster administrator must provide a manual acknowledgment before the cluster can be upgraded from OpenShift Container Platform 4.11 to 4.12. This is to help prevent issues after upgrading to OpenShift Container Platform 4.12, where APIs that have been removed are still in use by workloads, tools, or other components running on or interacting with the cluster. Administrators must evaluate their cluster for any APIs in use that will be removed and migrate the affected components to use the appropriate new API version. After this is done, the administrator can provide the administrator acknowledgment.

All OpenShift Container Platform 4.11 clusters require this administrator acknowledgment before they can be upgraded to OpenShift Container Platform 4.12.

Enabling a feature set when installing a cluster

Beginning with OpenShift Container Platform 4.12, you can enable a feature set as part of the installation process. A feature set is a collection of OpenShift Container Platform features that are not enabled by default.

For more information about enabling a feature set during installation, see Enabling OpenShift Container Platform features using feature gates.

OpenShift Container Platform on ARM

OpenShift Container Platform 4.12 is now supported on ARM architecture-based Azure installer-provisioned infrastructure. AWS Graviton 3 processors are now available for cluster deployments and are also supported on OpenShift Container Platform 4.11. For more information about instance availability and installation documentation, see Supported installation methods for different platforms

Mirroring file-based catalog Operator images in OCI format with the oc-mirror CLI plugin (Technology Preview)

Using the oc-mirror CLI plugin to mirror file-based catalog Operator images in OCI format instead of Docker v2 format is now available as a Technology Preview.

Installing an OpenShift Container Platform cluster on GCP into a shared VPC (Technology Preview)

In OpenShift Container Platform 4.12, you can install a cluster on GCP into a shared VPC as a Technology Preview. In this installation method, the cluster is configured to use a VPC from a different GCP project. A shared VPC enables an organization to connect resources from multiple projects to a common VPC network. You can communicate within the organization securely and efficiently by using internal IP addresses from that network.

Consistent IP address for Ironic API in bare-metal installations without a provisioning network

With this update, in bare-metal installations without a provisioning network, the Ironic API service is accessible through a proxy server. This proxy server provides a consistent IP address for the Ironic API service. If the Metal3 pod that contains metal3-ironic relocates to another pod, the consistent proxy address ensures constant communication with the Ironic API service.

Installing OpenShift Container Platform on GCP using service account authentication

In OpenShift Container Platform 4.12, you can install a cluster on GCP using a virtual machine with a service account attached to it. This allows you to perform an installation without needing to use a service account JSON file.

For more information, see Creating a GCP service account.

propagateUserTags parameter for AWS resources provisioned by the OpenShift Container Platform cluster

In OpenShift Container Platform 4.12, the propagateUserTags parameter is a flag that directs in-cluster Operators to include the specified user tags in the tags of the AWS resources that the Operators create.

For more information, see Optional configuration parameters.

Ironic container images use RHEL 9 base image

In earlier versions of OpenShift Container Platform, Ironic container images used Red Hat Enterprise Linux (RHEL) 8 as the base image. From OpenShift Container Platform 4.12, Ironic container images use RHEL 9 as the base image. The RHEL 9 base image adds support for CentOS Stream 9, Python 3.8, and Python 3.9 in Ironic components.

For more information about the Ironic provisioning service, see Deploying installer-provisioned clusters on bare metal.

Cloud provider configuration updates for clusters that run on RHOSP

In OpenShift Container Platform 4.12, clusters that run on Red Hat OpenStack Platform (RHOSP) are switched from the legacy OpenStack cloud provider to the external Cloud Controller Manager (CCM). This change follows the move in Kubernetes from in-tree, legacy cloud providers to external cloud providers that are implemented by using the Cloud Controller Manager.

For more information, see The OpenStack Cloud Controller Manager.

Support for workloads on RHOSP distributed compute nodes

In OpenShift Container Platform 4.12, cluster deployments to Red Hat OpenStack Platform (RHOSP) clouds that have distributed compute node (DCN) architecture were validated. A reference architecture for these deployments is forthcoming.

For a brief overview of this type of deployment, see the blog post Deploying Your Cluster at the Edge With OpenStack.

OpenShift Container Platform on AWS Outposts (Technology Preview)

OpenShift Container Platform 4.12 is now supported on the AWS Outposts platform as a Technology Preview. With AWS Outposts you can deploy edge-based worker nodes, while using AWS Regions for the control plane nodes. For more information, see Installing a cluster on AWS with remote workers on AWS Outposts.

Agent-based installation supports two input modes

The Agent-based installation supports two input modes:

  • install-config.yaml file

  • agent-config.yaml file

Optional
  • Zero Touch Provisioning (ZTP) manifests

With the preferred mode, you can configure the install-config.yaml file and specify Agent-based specific settings in the agent-config.yaml file. For more information, see About the Agent-based OpenShift Container Platform Installer.

Agent-based installation supports installing OpenShift Container Platform clusters in FIPS compliant mode

Agent-based OpenShift Container Platform Installer supports OpenShift Container Platform clusters in Federal Information Processing Standards (FIPS) compliant mode. You must set the value of the fips field to True in the install-config.yaml file. For more information, see About FIPS compliance.

Deploy an Agent-based OpenShift Container Platform cluster in a disconnected environment

You can perform an Agent-based installation in a disconnected environment. To create an image that is used in a disconnected environment, the imageContentSources section in the install-config.yaml file must contain the mirror information or registries.conf file if you are using ZTP manifests. The actual configuration settings to use in these files are supplied by either the oc adm release mirror or oc mirror command. For more information, see Understanding disconnected installation mirroring.

Explanation of field to build and push graph-data

When creating the image set configuration, you can add the graph: true field to build and push the graph-data image to the mirror registry. The graph-data image is required to create OpenShift Update Service (OSUS). The graph: true field also generates the UpdateService custom resource manifest. The oc command-line interface (CLI) can use the UpdateService custom resource manifest to create OSUS.

Agent-based installation supports single and dual stack networking

You can create the agent ISO image with the following IP address configurations:

  • IPv4

  • IPv6

  • IPv4 and IPv6 in parallel (dual-stack)

IPv6 is supported only on bare metal platforms.

For more information, see Dual and single IP stack clusters.

Agent deployed OpenShift Container Platform cluster can be used as a hub cluster

You can install the multicluster engine for Kubernetes Operator and deploy a hub cluster with the Agent-based OpenShift Container Platform Installer. For more information, see Preparing an Agent-based installed cluster for the multicluster engine for Kubernetes Operator.

Agent-based installation performs installation validations

The Agent-based OpenShift Container Platform Installer performs validations on:

  • Installation image generation: The user-provided manifests are checked for validity and compatibility.

  • Installation: The installation service checks the hardware available for installation and emits validation events that can be retrieved with the openshift-install agent wait-for subcommands.

For more information, see Installation validations.

Configure static networking in a Agent-based installation

With the Agent-based OpenShift Container Platform Installer, you can configure static IP addresses for IPv4, IPv6, or dual-stack (both IPv4 and IPv6) for all the hosts prior to creating the agent ISO image. You can add the static addresses to the hosts section of the agent-config.yaml file or in the NMStateConfig.yaml file if you are using the ZTP manifests. Note that the configuration of the addresses must follow the syntax rules for NMState as described in NMState state examples.

IPv6 is supported only on bare metal platforms.

For more information, see About networking.

CLI based automated deployment in an Agent-based installation

With the Agent-based OpenShift Container Platform Installer, you can define your installation configurations, generate an ISO for all the nodes, and then have an unattended installation by booting the target systems with the generated ISO. For more information, see Installing a OpenShift Container Platform cluster with the Agent-based OpenShift Container Platform Installer.

Agent-based installation supports host specific configuration at the instalation time

You can configure the hostname, network configuration in NMState format, root device hints, and role in an Agent-based installation.

For more information, see About root device hints.

Agent-based installation supports DHCP

With the Agent-based OpenShift Container Platform Installer, you can deploy to environments where you rely on DHCP to configure networking for all the nodes, as long as you know the IP that at least one of the systems will receive. This IP is required so that all nodes use it as a meeting point. For more information, see DHCP.

Installing a cluster on Nutanix with limited internet access

You can now install a cluster on Nutanix when the environment has limited access to to the internet, as in the case of a disconnected or restricted network cluster. With this type of installation, you create a registry that mirrors the contents of the OpenShift Container Platform image registry and contains the installation media. You can create this registry on a mirror host, which can access both the internet and your closed network.

Post-installation configuration

CSI driver installation on vSphere clusters

To install a CSI driver on a cluster running on vSphere, the following requirements must be met:

  • Virtual machines of hardware version 15 or later

  • VMware vSphere version 7.0 Update 2 or later, which includes version 8.0.

  • vCenter 7.0 Update 2 or later, which includes version 8.0.

  • No third-party CSI driver already installed in the cluster

    If a third-party CSI driver is present in the cluster, OpenShift Container Platform does not overwrite it.

Components with versions earlier than those above are still supported, but are deprecated. These versions are still fully supported, but version 4.12 of OpenShift Container Platform requires vSphere virtual hardware version 15 or later. For more information, see Deprecated and removed features.

Failing to meet the above requirements prevents OpenShift Container Platform from upgrading to OpenShift Container Platform 4.13 or later.

Cluster Capabilities

The following new cluster capabilities have been added:

  • Console

  • Insights

  • Storage

  • CSISnapshot

A new predefined set of cluster capabilities, v4.12, has been added. This includes all capabilities from v4.11, and the new capabilities added with the current release.

For more information, see link: Enabling cluster capabilities.

OpenShift Container Platform with multi-architecture compute machines (Technology Preview)

OpenShift Container Platform 4.12 with multi-architecture compute machines now supports manifest listed images on image streams. For more information about manifest list images, see Configuring multi-architecture compute machines on an OpenShift Container Platform cluster.

On a cluster with multi-architecture compute machines, you can now override the node affinity in the Operator’s Subscription object to schedule pods on nodes with architectures that the Operator supports. For more information, see Using node affinity to control where an Operator is installed.

Web console

Administrator Perspective

With this release, there are several updates to the Administrator perspective of the web console.

  • The OpenShift Container Platform web console displays a ConsoleNotification if the cluster is upgrading. Once the upgrade is done, the notification is removed.

  • A restart rollout option for the Deployment resource and a retry rollouts option for the DeploymentConfig resource are available on the Action and Kebab menus.

Multi-architecture compute machines on the OpenShift Container Platform web console

The console-operator now scans all nodes and builds a set of all architecture types that cluster nodes run on and pass it to the console-config.yaml. The console-operator can be installed on nodes with architectures of the values amd64, arm64, ppc64le, or s390x.

For more information about multi-architechture compute machines, see Configuring a multi-architecture compute machine on an OpenShift cluster.

Dynamic plugin generally available

This feature was previously introduced as a Technology Preview in OpenShift Container Platform 4.10 and is now generally available in OpenShift Container Platform 4.12. With the dynamic plugin, you can build high quality and unique user experiences natively in the web console. You can:

  • Add custom pages.

  • Add perspectives beyond administrator and developer.

  • Add navigation items.

  • Add tabs and actions to resource pages.

  • Extend existing pages.

For more information, see Overview of dynamic-plugins.

Developer Perspective

With this release, there are several updates to the Developer perspective of the web console. You can perform the following actions:

  • Export your application in the ZIP file format to another project or cluster by using the Export application option on the +Add page.

  • Create a Kafka event sink to receive events from a particular source and send them to a Kafka topic.

  • Set the default resource preference in the User PreferencesApplications page. In addition, you can select another resource type to be the default.

    • Optionally, set another resource type from the Add page by clicking Import from GitAdvanced optionsResource type and selecting the resource from the drop-down list.

  • Make the status.HostIP node IP address for pods visible in the Details tab of the Pods page.

  • See the resource quota alert label on the Topology and Add pages whenever any resource reaches the quota. The alert label link takes you to the ResourceQuotas list page. If the alert label link is for a single resource quota, it takes you to the ResourceQuota details page.

    • For deployments, an alert is displayed in the topology node side panel if any errors are associated with resource quotas. Also, a yellow border is displayed around the deployment nodes when the resource quota is exceeded.

  • Customize the following UI items using the form or YAML view:

    • Perspectives visible to users

    • Quick starts visible to users

    • Cluster roles accessible to a project

    • Actions visible on the +Add page

    • Item types in the Developer Catalog

  • See the common updates to the Pipeline details and PipelineRun details page visualization by performing the following actions:

    • Use the mouse wheel to change the zoom factor.

    • Hover over the tasks to see the task details.

    • Use the standard icons to zoom in, zoom out, fit to screen, and reset the view.

    • PipelineRun details page only: At specific zoom factors, the background color of the tasks changes to indicate the error or warning status. You can hover over the tasks badge to see the total number of tasks and the completed tasks.

Helm page improvements

In OpenShift Container Platform 4.12, you can do the following from the Helm page:

  • Create Helm releases and repositories using the Create button.

  • Create, update, or delete a cluster-scoped or a namespace-scoped Helm chart repository.

  • View the list of the existing Helm chart repositories with their scope in the Repositories page.

  • View the newly created Helm release in the Helm Releases page.

Negative matchers in Alertmanager

With this update, Alertmanager now supports a Negative matcher option. Using Negative matcher, you can update the Label value to a Not Equals matcher. The negative matcher checkbox changes = (value equals) into != (value does not equal) and changes =~ (value matches regular expression) into !~(value does not match regular expression). Also, the Use RegEx checkbox label is renamed to RegEx.

OpenShift CLI (oc)

Managing plugins for the OpenShift CLI with Krew (Technology Preview)

Using Krew to install and manage plugins for the OpenShift CLI (oc) is now available as a Technology Preview.

For more information, see Managing CLI plugins with Krew.

IBM Z and LinuxONE

With this release, IBM Z and LinuxONE are now compatible with OpenShift Container Platform 4.12. The installation can be performed with z/VM or RHEL KVM. For installation instructions, see the following documentation:

Notable enhancements

The following new features are supported on IBM Z and LinuxONE with OpenShift Container Platform 4.12:

  • Cron jobs

  • Descheduler

  • FIPS cryptography

  • IPv6

  • PodDisruptionBudget

  • Scheduler profiles

  • Stream Control Transmission Protocol (SCTP)

IBM Secure Execution (Technology Preview)

OpenShift Container Platform now supports configuring Red Hat Enterprise Linux CoreOS (RHCOS) nodes for IBM Secure Execution on IBM Z and LinuxONE (s390x architecture) as a Technology Preview feature.

For installation instructions, see the following documentation:

Supported features

The following features are also supported on IBM Z and LinuxONE:

  • Currently, the following Operators are supported:

    • Cluster Logging Operator

    • Compliance Operator

    • File Integrity Operator

    • Local Storage Operator

    • NFD Operator

    • NMState Operator

    • OpenShift Elasticsearch Operator

    • Service Binding Operator

    • Vertical Pod Autoscaler Operator

  • The following Multus CNI plugins are supported:

    • Bridge

    • Host-device

    • IPAM

    • IPVLAN

  • Alternate authentication providers

  • Automatic Device Discovery with Local Storage Operator

  • CSI Volumes

    • Cloning

    • Expansion

    • Snapshot

  • Encrypting data stored in etcd

  • Helm

  • Horizontal pod autoscaling

  • Monitoring for user-defined projects

  • Multipathing

  • Operator API

  • OC CLI plugins

  • Persistent storage using iSCSI

  • Persistent storage using local volumes (Local Storage Operator)

  • Persistent storage using hostPath

  • Persistent storage using Fibre Channel

  • Persistent storage using Raw Block

  • OVN-Kubernetes, including IPsec encryption

  • Support for multiple network interfaces

  • Three-node cluster support

  • z/VM Emulated FBA devices on SCSI disks

  • 4K FCP block device

These features are available only for OpenShift Container Platform on IBM Z and LinuxONE for 4.12:

  • HyperPAV enabled on IBM Z and LinuxONE for the virtual machines for FICON attached ECKD storage

Restrictions

The following restrictions impact OpenShift Container Platform on IBM Z and LinuxONE:

  • Automatic repair of damaged machines with machine health checking

  • Red Hat OpenShift Local

  • Controlling overcommit and managing container density on nodes

  • NVMe

  • OpenShift Metering

  • OpenShift Virtualization

  • Precision Time Protocol (PTP) hardware

  • Tang mode disk encryption during OpenShift Container Platform deployment

  • Compute nodes must run Red Hat Enterprise Linux CoreOS (RHCOS)

  • Persistent shared storage must be provisioned by using either Red Hat OpenShift Data Foundation or other supported storage protocols

  • Persistent non-shared storage must be provisioned using local storage, like iSCSI, FC, or using LSO with DASD, FCP, or EDEV/FBA

IBM Power

With this release, IBM Power is now compatible with OpenShift Container Platform 4.12. For installation instructions, see the following documentation:

Notable enhancements

The following new features are supported on IBM Power with OpenShift Container Platform 4.12:

  • Cloud controller manager for IBM Cloud

  • Cron jobs

  • Descheduler

  • FIPS cryptography

  • PodDisruptionBudget

  • Scheduler profiles

  • Stream Control Transmission Protocol (SCTP)

  • Topology Manager

Supported features

The following features are also supported on IBM Power:

  • Currently, the following Operators are supported:

    • Cluster Logging Operator

    • Compliance Operator

    • File Integrity Operator

    • Local Storage Operator

    • NFD Operator

    • NMState Operator

    • OpenShift Elasticsearch Operator

    • SR-IOV Network Operator

    • Service Binding Operator

    • Vertical Pod Autoscaler Operator

  • The following Multus CNI plugins are supported:

    • Bridge

    • Host-device

    • IPAM

    • IPVLAN

  • Alternate authentication providers

  • CSI Volumes

    • Cloning

    • Expansion

    • Snapshot

  • Encrypting data stored in etcd

  • Helm

  • Horizontal pod autoscaling

  • IPv6

  • Monitoring for user-defined projects

  • Multipathing

  • Multus SR-IOV

  • Operator API

  • OC CLI plugins

  • OVN-Kubernetes, including IPsec encryption

  • Persistent storage using iSCSI

  • Persistent storage using local volumes (Local Storage Operator)

  • Persistent storage using hostPath

  • Persistent storage using Fibre Channel

  • Persistent storage using Raw Block

  • Support for multiple network interfaces

  • Support for Power10

  • Three-node cluster support

  • 4K Disk Support

Restrictions

The following restrictions impact OpenShift Container Platform on IBM Power:

  • Automatic repair of damaged machines with machine health checking

  • Red Hat OpenShift Local

  • Controlling overcommit and managing container density on nodes

  • OpenShift Metering

  • OpenShift Virtualization

  • Precision Time Protocol (PTP) hardware

  • Tang mode disk encryption during OpenShift Container Platform deployment

  • Compute nodes must run Red Hat Enterprise Linux CoreOS (RHCOS)

  • Persistent storage must be of the Filesystem type that uses local volumes, Red Hat OpenShift Data Foundation, Network File System (NFS), or Container Storage Interface (CSI)

Images

A new import value, importMode, has been added to the importPolicy parameter of image streams. The following fields are available for this value:

  • Legacy: Legacy is the default value for importMode. When active, the manifest list is discarded, and a single sub-manifest is imported. The platform is chosen in the following order of priority:

    1. Tag annotations

    2. Control plane architecture

    3. Linux/AMD64

    4. The first manifest in the list

  • PreserveOriginal: When active, the original manifest is preserved. For manifest lists, the manifest list and all of its sub-manifests are imported.

Security and compliance

Security Profiles Operator

The Security Profiles Operator (SPO) is now available for OpenShift Container Platform 4.12 and later.

The SPO provides a way to define secure computing (seccomp) profiles and SELinux profiles as custom resources, synchronizing profiles to every node in a given namespace.

For more information, see Security Profiles Operator Overview.

Networking

Support for dual-stack addressing for the API VIP and Ingress VIP

Assisted Installer supports installation of OpenShift Container Platform 4.12 and later versions with dual stack networking for the API VIP and Ingress VIP on bare metal only. This support introduces two new configuration settings: api_vips and ingress_vips, which can take a list of IP addresses. The legacy settings, api_vip and ingress_vip must also be set in OpenShift Container Platform 4.12; however, since they only take one IP address, you must set the IPv4 address when configuring dual stack networking for the API VIP and Ingress VIP with the legacy api_vip and ingress_vip configuration settings.

The API VIP address and the Ingress VIP address must be of the primary IP address family when using dual-stack networking. Currently, Red Hat does not support dual-stack VIPs or dual-stack networking with IPv6 as the primary IP address family. However, Red Hat does support dual-stack networking with IPv4 as the primary IP address family. Therefore, you must place the IPv4 entries before the IPv6 entries. See the Assisted Installer documentation for details.

Red Hat OpenShift Networking

Red Hat OpenShift Networking is an ecosystem of features, plugins, and advanced networking capabilities that extend Kubernetes networking beyond the Kubernetes CNI plugin with the advanced networking-related features that your cluster needs to manage its network traffic for one or multiple hybrid clusters. This ecosystem of networking capabilities integrates ingress, egress, load balancing, high-performance throughput, security, and inter-, and intra-cluster traffic management and provides role-based observability tooling to reduce its natural complexities.

For more information, see About networking.

OVN-Kubernetes is now the default networking plugin

When installing a new cluster the OVN-Kubernetes network plugin is the default networking plugin. For all prior versions of OpenShift Container Platform, OpenShift SDN remains the default networking plugin.

The OVN-Kubernetes network plugin includes a wider array of features than OpenShift SDN, including:

There are also enormous scale, performance, and stability improvements in OpenShift Container Platform 4.12 compared to prior versions.

If you are using the OpenShift SDN network plugin, note that:

  • Existing and future deployments using OpenShift SDN continues to be supported.

  • OpenShift SDN remains the default on OpenShift Container Platform versions earlier than 4.12.

  • As of OpenShift Container Platform 4.12, OpenShift SDN is a supported installation-time option.

  • OpenShift SDN remains feature frozen.

For more information about OVN-Kubernetes, including a feature comparison matrix with OpenShift SDN, see About the OVN-Kubernetes network plugin.

For information on migrating to OVN-Kubernetes from OpenShift SDN, see Migrating from the OpenShift SDN network plugin.

Ingress Node Firewall Operator

This update introduces a new stateless Ingress Node Firewall Operator. You can now configure firewall rules at the node level. For more information, see Ingress Node Firewall Operator.

Enhancements to networking metrics

The following metrics are now available for the OVN-Kubernetes network plugin:

  • ovn_controller_southbound_database_connected

  • ovnkube_master_libovsdb_monitors

  • ovnkube_master_network_programming_duration_seconds

  • ovnkube_master_network_programming_ovn_duration_seconds

  • ovnkube_master_egress_routing_via_host

  • ovs_vswitchd_interface_resets_total

  • ovs_vswitchd_interface_rx_dropped_total

  • ovs_vswitchd_interface_tx_dropped_total

  • ovs_vswitchd_interface_rx_errors_total

  • ovs_vswitchd_interface_tx_errors_total

  • ovs_vswitchd_interface_collisions_total

The following metric has been removed:

  • ovnkube_master_skipped_nbctl_daemon_total

Multi-zone Installer Provisioned Infrastructure VMware vSphere installation (Technology Preview)

Beginning with OpenShift Container Platform 4.12, the ability to configure multiple vCenter datacenters and multiple vCenter clusters in a single vCenter installation using installer-provisioned infrastructure is now available as a Technology Preview feature. Using vCenter tags, you can use this feature to associate vCenter datacenters and compute clusters with openshift-regions and openshift-zones. These associations define failure domains to enable application workloads to be associated with specific locations and failure domains.

Kubernetes NMState in VMware vSphere now supported

Beginning with OpenShift Container Platform 4.12, you can configure the networking settings such as DNS servers or search domains, VLANs, bridges, and interface bonding using the Kubernetes NMState Operator on your VMware vSphere instance.

For more information, see About the Kubernetes NMState Operator.

Kubernetes NMState in OpenStack now supported

Beginning with OpenShift Container Platform 4.12, you can configure the networking settings such as DNS servers or search domains, VLANs, bridges, and interface bonding using the Kubernetes NMState Operator on your OpenStack instance.

For more information, see About the Kubernetes NMState Operator.

External DNS Operator

In OpenShift Container Platform 4.12, the External DNS Operator modifies the format of the ExternalDNS wildcard TXT records on AzureDNS. The External DNS Operator replaces the asterisk with any in ExternalDNS wildcard TXT records. You must avoid the ExternalDNS wildcard A and CNAME records having any leftmost subdomain because this might cause a conflict.

The upstream version of ExternalDNS for OpenShift Container Platform 4.12 is v0.13.1.

Capturing metrics and telemetry associated with the use of routes and shards

In OpenShift Container Platform 4.12, the Cluster Ingress Operator exports a new metric named route_metrics_controller_routes_per_shard. The shard_name label of the metric specifies the name of the shards. This metric gives the total number of routes that are admitted by each shard.

The following metrics are sent through telemetry.

Table 1. Metrics sent through telemetry
Name Recording rule expression Description

cluster:route_metrics_controller_routes_per_shard:min

min(route_metrics_controller_routes_per_shard)

Tracks the minimum number of routes admitted by any of the shards

cluster:route_metrics_controller_routes_per_shard:max

max(route_metrics_controller_routes_per_shard)

Tracks the maximum number of routes admitted by any of the shards

cluster:route_metrics_controller_routes_per_shard:avg

avg(route_metrics_controller_routes_per_shard)

Tracks the average value of the route_metrics_controller_routes_per_shard metric

cluster:route_metrics_controller_routes_per_shard:median

quantile(0.5, route_metrics_controller_routes_per_shard)

Tracks the median value of the route_metrics_controller_routes_per_shard metric

cluster:openshift_route_info:tls_termination:sum

sum (openshift_route_info) by (tls_termination)

Tracks the number of routes for each tls_termination value. The possible values for tls_termination are edge, passthrough and reencrypt

AWS Load Balancer Operator

In OpenShift Container Platform 4.12, the AWS Load Balancer controller now implements the Kubernetes Ingress specification for multiple matches. If multiple paths within an Ingress match a request, the longest matching path takes the precedence. If two paths still match, paths with an exact path type take precedence over a prefix path type.

The AWS Load Balancer Operator sets the EnableIPTargetType feature gate to false. The AWS Load Balancer controller disables the support for services and ingress resources for target-type ip.

The upstream version of aws-load-balancer-controller for an OpenShift Container Platform 4.12 is v2.4.4.

Ingress Controller Autoscaling (Technology Preview)

You can now use the OpenShift Container Platform Custom Metrics Autoscaler Operator to dynamically scale the default Ingress Controller based on metrics in your deployed cluster, such as the number of worker nodes available. The Custom Metrics Autoscaler is available as a Technology Preview feature.

For more information, see Autoscaling an Ingress Controller.

HAProxy maxConnections default is now 50,000

In OpenShift Container Platform 4.12, the default value for the maxConnections setting is now 50000. Previously starting with OpenShift Container Platform 4.11, the default value for the maxConnections setting was 20000.

For more information, see Ingress Controller configuration parameters.

Configuration of an Ingress Controller for manual DNS management

You can now configure an Ingress Controller to stop automatic DNS management and start manual DNS management. Set the dnsManagementPolicy parameter to specify automatic or manual DNS management.

Supported hardware for SR-IOV (Single Root I/O Virtualization)

OpenShift Container Platform 4.12 adds support for the following SR-IOV devices:

  • Intel X710 Base T

  • MT2892 Family [ConnectX‑6 Dx]

  • MT2894 Family [ConnectX-6 Lx]

  • MT42822 BlueField‑2 in ConnectX‑6 NIC mode

  • Silicom STS Family

For more information, see Supported devices.

Supported hardware for OvS (Open vSwitch) Hardware Offload

OpenShift Container Platform 4.12 adds OvS Hardware Offload support for the following devices:

  • MT2892 Family [ConnectX-6 Dx]

  • MT2894 Family [ConnectX-6 Lx]

  • MT42822 BlueField‑2 in ConnectX‑6 NIC mode

For more information, see Supported devices.

Multi-network-policy supported for SR-IOV (Technology Preview)

OpenShift Container Platform 4.12 adds support for configuring multi-network policy for SR-IOV devices.

You can now configure multi-network for SR-IOV additional networks. Configuring SR-IOV additional networks is a Technology Preview feature and is only supported with kernel network interface cards (NICs).

For more information, see Configuring multi-network policy.

Switch between AWS load balancer types without deleting the Ingress Controller

You can update the Ingress Controller to switch between an AWS Classic Load Balancer (CLB) and an AWS Network Load Balancer (NLB) without deleting the Ingress Controller.

For more information, see Configuring ingress cluster traffic on AWS.

IPv6 unsolicited neighbor advertisements and IPv4 gratuitous address resolution protocol now default on the SR-IOV CNI plugin

Pods created with the Single Root I/O Virtualization (SR-IOV) CNI plugin, where the IP address management CNI plugin has assigned IPs, now send IPv6 unsolicited neighbor advertisements and/or IPv4 gratuitous address resolution protocol by default onto the network. This enhancement notifies hosts of the new pod’s MAC address for a particular IP to refresh ARP/NDP caches with the correct information.

For more information, see Supported devices.

Support for CoreDNS cache tuning

You can now configure the time-to-live (TTL) duration of both successful and unsuccessful DNS queries cached by CoreDNS.

For more information, see Tuning the CoreDNS cache.

OVN-Kubernetes supports configuration of internal subnet

Previously, the subnet that OVN-Kubernetes uses internally was 100.64.0.0/16 for IPv4 and fd98::/48 for IPv6 and could not be modified. To support instances when these subnets overlap with existing subnets in your infrastructure, you can now change these internal subnets to avoid any overlap.

Egress IP support on Red Hat OpenStack Platform (RHOSP)

RHOSP, paired with OpenShift Container Platform, now supports automatic attachment and detachment of Egress IP addresses. The traffic from one or more pods in any number of namespaces has a consistent source IP address for services outside of the cluster. This support applies to OpenShift SDN and OVN-Kubernetes as default network providers.

OpenShift SDN to OVN-Kubernetes feature migration support

If you plan to migrate from the OpenShift SDN network plugin to the OVN-Kubernetes network plugin, your configurations for the following capabilities are automatically converted to work with OVN-Kubernetes:

  • Egress IP addresses

  • Egress firewalls

  • Multicast

For more information about how the migration to OVN-Kubernetes works, see Migrating from the OpenShift SDN cluster network provider.

Egress firewall audit logging

For the OVN-Kubernetes network plugin, egress firewalls support audit logging using the same mechanism that network policy audit logging uses. For more information, see Logging for egress firewall and network policy rules.

Advertise MetalLB from a given address pool from a subset of nodes

With this update, in BGP mode, you can use the node selector to advertise the MetalLB service from a subset of nodes, using a specific pool of IP addresses. This feature was introduced as a Technology Preview feature in OpenShift Container Platform 4.11 and is now generally available in OpenShift Container Platform 4.12 for BGP mode only. L2 mode remains a Technology Preview feature.

Additional deployment specifications for MetalLB

This update provides additional deployment specifications for MetalLB. When you use a custom resource to deploy MetalLB, you can use these additional deployment specifications to manage how MetalLB speaker and controller pods deploy and run in your cluster. For example, you can use MetalLB deployment specifications to manage where MetalLB pods are deployed, define CPU limits for MetalLB pods, and assign runtime classes to MetalLB pods.

For more information about deployment specifications for MetalLB, see Deployment specifications for MetalLB.

Node IP selection improvements

Previously, the nodeip-configuration service on a cluster host selected the IP address from the interface that the default route used. If multiple routes were present, the service would select the route with the lowest metric value. As a result, network traffic could be distributed from the incorrect interface.

With OpenShift Container Platform 4.12, a new interface has been added to the nodeip-configuration service, which allows users to create a hint file. The hint file contains a variable, NODEIP_HINT, that overrides the default IP selection logic and selects a specific node IP address from the subnet NODEIP_HINT variable. Using the NODEIP_HINT variable allows users to specify which IP address is used, ensuring that network traffic is distributed from the correct interface.

CoreDNS update to version 1.10.0

In OpenShift Container Platform 4.12, CoreDNS uses version 1.10.0, which includes the following changes:

  • CoreDNS does not expand the query UDP buffer size if it was previously set to a smaller value.

  • CoreDNS now always prefixes each log line in Kubernetes client logs with the associated log level.

  • CoreDNS now reloads more quickly at an approximate speed of 20ms.

Support for a configurable reload interval in HAProxy

With this update, a cluster administrator can configure the reload interval to force HAProxy to reload its configuration less frequently in response to route and endpoint updates. The default minimum HAProxy reload interval is 5 seconds.

For more information, see Configuring HAProxy reload interval.

Network Observability Operator updates

The Network Observability Operator releases updates independently from the OpenShift Container Platform minor version release stream. Updates are available through a single, rolling stream which is supported on all currently supported versions of OpenShift Container Platform 4. Information regarding new features, enhancements, and bug fixes for the Network Observability Operator can be found in the Network Observability release notes.

IPv6 for secondary network interfaces on RHOSP

IPv6 for secondary network interfaces is now supported in clusters that run on RHOSP.

UDP support for load balancers on RHOSP

Resulting from the switch to an external OpenStack cloud provider, UDP is now supported for LoadBalancer services for clusters that run on that platform.

Deploy the SR-IOV Operator for hosted control planes (Technology Preview)

If you configured and deployed your hosting service cluster, you can now deploy the SR-IOV Operator for a hosted cluster. For more information, see Deploying the SR-IOV Operator for hosted control planes.

Support for IPv6 virtual IP (VIP) addresses for the Ingress VIP and API VIP services on bare metal

With this update, in installer-provisioned infrastructure clusters, the ingressVIP and apiVIP configuration settings in the install-config.yaml file are deprecated. Instead, use the ingressVIPs and apiVIPs configuration settings. These settings support dual-stack networking for applications on bare metal that require IPv4 and IPv6 access to the cluster by using the Ingress VIP and API VIP services. The ingressVIPs and apiVIPs configuration settings use a list format to specify an IPv4 address, an IPv6 address, or both IP address formats. The order of the list indicates the primary and secondary VIP address for each service. The primary IP address must be from the IPv4 network when using dual stack networking.

Support for switching the Bluefield-2 network device from data processing unit (DPU) mode to network interface controller (NIC) mode (Technology Preview)

With this update, you can switch the BlueField-2 network device from data processing unit (DPU) mode to network interface controller (NIC) mode.

For more information, see Switching Bluefield-2 from DPU to NIC.

Support for enabling hybrid networking after cluster installation

Previously, for clusters that use the OVN-Kubernetes network plugin, during cluster installation you could enable hybrid networking so that your cluster supported Windows nodes. Now you can enable hybrid networking after installation. For more information, see Configuring hybrid networking.

Support for allocateLoadBalancerNodePorts in the Network API service object

The ServiceSpec component in the Network API under the Service object describes the attributes that a user creates on a service. The allocateLoadBalancerNodePorts attribute within the ServiceSpec component is now supported as of OpenShift Container Platform 4.12.28 release. The allocateLoadBalancerNodePorts attribute defines whether the NodePorts will be automatically allocated for services of the LoadBalancer type.

For more information, see Network API ServiceSpec object

Storage

Persistent storage using the GCP Filestore Driver Operator (Technology Preview)

OpenShift Container Platform is capable of provisioning persistent volumes (PVs) using the Container Storage Interface (CSI) driver for Google Compute Platform (GCP) Filestore. The GCP Filestore CSI Driver Operator that manages this driver is in Technology Preview.

For more information, see see GCP Filestore CSI Driver Operator.

Automatic CSI migration for AWS Elastic Block Storage auto migration is generally available

Starting with OpenShift Container Platform 4.8, automatic migration for in-tree volume plugins to their equivalent Container Storage Interface (CSI) drivers became available as a Technology Preview feature. Support for Amazon Web Services (AWS) Elastic Block Storage (EBS) was provided in this feature in OpenShift Container Platform 4.8, and OpenShift Container Platform 4.12 now supports automatic migration for AWS EBS as generally available. CSI migration for AWS EBS is now enabled by default and requires no action by an administrator.

This feature automatically translates in-tree objects to their counterpart CSI representations and should be completely transparent to users. Translated objects are not stored on disk, and user data is not migrated.

While storage class referencing to the in-tree storage plugin will continue working, it is recommended that you switch the default storage class to the CSI storage class.

For more information, see CSI Automatic Migration.

Automatic CSI migration for GCP PD auto migration is generally available

Starting with OpenShift Container Platform 4.8, automatic migration for in-tree volume plugins to their equivalent Container Storage Interface (CSI) drivers became available as a Technology Preview feature. Support for Google Compute Engine Persistent Disk (GCP PD) was provided in this feature in OpenShift Container Platform 4.9, and OpenShift Container Platform 4.12 now supports automatic migration for GCP PD as generally available. CSI migration for GCP PD is now enabled by default and requires no action by an administrator.

This feature automatically translates in-tree objects to their counterpart CSI representations and should be completely transparent to users. Translated objects are not stored on disk, and user data is not migrated.

While storage class referencing to the in-tree storage plugin will continue working, it is recommended that you switch the default storage class to the CSI storage class.

For more information, see CSI Automatic Migration.

Updating from OpenShift Container Platform 4.12 to 4.13 and later with vSphere in-tree PVs

Updates from OpenShift Container Platform 4.12 to 4.13 and from 4.13 to 4.14 are blocked if all of the following conditions are true:

  • CSI migration is not already enabled

  • OpenShift Container Platform is not running on vSphere 7.0u3L+ or 8.0u2+

  • vSphere in-tree persistent volumes (PVs) are present

For more information, see CSI Automatic Migration.

Storage capacity tracking for pod scheduling is generally available

This new feature exposes the currently available storage capacity using CSIStorageCapacity objects, and enhances scheduling of pods that use Container Storage Interface (CSI) volumes with late binding. Currently, the only OpenShift Container Platform storage type that supports this features is OpenShift Data Foundation.

VMware vSphere CSI topology is generally available

OpenShift Container Platform provides the ability to deploy OpenShift Container Platform for vSphere on different zones and regions, which allows you to deploy over multiple compute clusters, thus helping to avoid a single point of failure.

For more information, see vSphere CSI topology.

Local ephemeral storage resource management is generally available

The local ephemeral storage resource management features is now generally available. With this feature, you can manage local ephemeral storage by specifying requests and limits.

For more information, see Ephemeral storage management.

Volume populators (Technology Preview)

Volume populators use datasource to enable creating pre-populated volumes.

Volume population is currently enabled, and supported as a Technology Preview feature. However, OpenShift Container Platform does not ship with any volume populators.

For more information, see Volume populators.

VMware vSphere CSI Driver Operator requirements

For OpenShift Container Platform 4.12, VMWare vSphere Container Storage Interface (CSI) Driver Operator requires the following minimum components installed:

  • VMware vSphere version 7.0 Update 2 or later, which includes version 8.0.

  • vCenter 7.0 Update 2 or later, which includes version 8.0.

  • Virtual machines of hardware version 15 or later

  • No third-party CSI driver already installed in the cluster

If a third-party CSI driver is present in the cluster, OpenShift Container Platform does not overwrite it. The presence of a third-party CSI driver prevents OpenShift Container Platform from upgrading to OpenShift Container Platform 4.13 or later.

Azure File supporting NFS is generally available

OpenShift Container Platform 4.12 supports Azure File Container Storage Interface (CSI) Driver Operator with Network File System (NFS) as generally available.

For more information, see NFS support.

Operator lifecycle

Platform Operators (Technology Preview)

Starting in OpenShift Container Platform 4.12, Operator Lifecycle Manager (OLM) introduces the platform Operator type as a Technology Preview feature. The platform Operator mechanism relies on resources from the RukPak component, also introduced in OpenShift Container Platform 4.12, to source and manage content.

A platform Operator is an OLM-based Operator that can be installed during or after an OpenShift Container Platform cluster’s Day 0 operations and participates in the cluster’s lifecycle. As a cluster administrator, you can use platform Operators to further customize your OpenShift Container Platform installation to meet your requirements and use cases.

For more information about platform Operators, see Managing platform Operators. For more information about RukPak and its resources, see Operator Framework packaging format.

Controlling where an Operator is installed

By default, when you install an Operator, OpenShift Container Platform randomly installs the Operator pod to one of your worker nodes.

In OpenShift Container Platform 4.12, you can control where an Operator pod is installed by adding affinity constraints to the Operator’s Subscription object.

For more information, see Controlling where an Operator is installed.

Pod security admission synchronization for user-created openshift-* namespaces

In OpenShift Container Platform 4.12, pod security admission synchronization is enabled by default if an Operator is installed in user-created namespaces that have an openshift- prefix. Synchronization is enabled after a cluster service version (CSV) is created in the namespace. The synchronized label inherits the permissions of the service accounts in the namespace.

Operator development

Configuring the security context of a catalog pod

You can configure the security context of a catalog pod by using the --security-context-config flag on the run bundle and bundle-upgrade subcommands. The flag enables seccomp profiles to comply with pod security admission. The flag accepts the values of restricted and legacy. If you do not specify a value, the seccomp profile defaults to restricted. If your catalog pod cannot run with restricted permissions, set the flag to legacy, as shown in the following example:

$ operator-sdk run bundle \
  --security-context-config=legacy

Validating bundle manifests for APIs removed from Kubernetes 1.25

You can now check bundle manifests for deprecated APIs removed from Kubernetes 1.25 by using the Operator Framework suite of tests with the bundle validate subcommand.

For example:

$ operator-sdk bundle validate .<bundle_dir_or_image> \
  --select-optional suite=operatorframework \
  --optional-values=k8s-version=1.25

If your Operator requests permission to use any of the APIs removed from Kubernetes 1.25, the command displays a warning message.

If any of the API versions removed from Kubernetes 1.25 are included in your Operator’s cluster service version (CSV), the command displays an error message.

Machine API

Control plane machine sets

OpenShift Container Platform 4.12 introduces control plane machine sets. Control plane machine sets provide management capabilities for control plane machines that are similar to what compute machine sets provide for compute machines. For more information, see Managing control plane machines.

Specifying cluster autoscaler log level verbosity

OpenShift Container Platform now supports setting the log level verbosity of the cluster autoscaler by setting the logVerbosity parameter in the ClusterAutoscaler custom resource. For more information, see the ClusterAutoscaler resource definition.

Enabling Azure boot diagnostics

OpenShift Container Platform now supports enabling boot diagnostics on Azure machines that your machine set creates. For more information, see "Enabling Azure boot diagnostics" for compute machines or control plane machines.

Machine Config Operator

RHCOS image layering

Red Hat Enterprise Linux CoreOS (RHCOS) image layering allows you to add new images on top of the base RHCOS image. This layering does not modify the base RHCOS image. Instead, it creates a custom layered image that includes all RHCOS functionality and adds additional functionality to specific nodes in the cluster.

Currently, RHCOS image layering allows you to work with Customer Experience and Engagement (CEE) to obtain and apply Hotfix packages on top of your RHCOS image, based on the Red Hat Hotfix policy. It is planned for future releases that you can use RHCOS image layering to incorporate third-party software packages such as Libreswan or numactl.

For more information, see RHCOS image layering.

Nodes

Updating the interface-specific safe list (Technology Preview)

OpenShift Container Platform now supports updating the default interface-specific safe sysctls.

You can add or remove sysctls from the predefined list. When you add sysctls, they can be set across all nodes. Updating the interface-specific safe sysctls list is a Technology Preview feature only.

Cron job time zones (Technology Preview)

Setting a time zone for a cron job schedule is now offered as a Technology Preview. If a time zone is not specified, the Kubernetes controller manager interprets the schedule relative to its local time zone.

For more information, see Creating cron jobs.

Linux Control Group version 2 promoted to Technology Preview

OpenShift Container Platform support for Linux Control Group version 2 (cgroup v2) has been promoted to Technology Preview. cgroup v2 is the next version of the kernel control groups. cgroups v2 offers multiple improvements, including a unified hierarchy, safer sub-tree delegation, new features such as Pressure Stall Information, and enhanced resource management and isolation. For more information, see Enabling Linux Control Group version 2 (cgroup v2).

crun container runtime (Technology Preview)

OpenShift Container Platform now supports the crun container runtime in Technology Preview. You can switch between the crun container runtime and the default container runtime as needed by using a ContainerRuntimeConfig custom resource (CR). For more information, see About the container engine and container runtime.

Self Node Remediation Operator enhancements

OpenShift Container Platform now supports control plane fencing by the Self Node Remediation Operator. In the event of node failure, you can follow remediation strategies on both worker nodes and control plane nodes. For more information, see the Workload Availability for Red Hat OpenShift documentation.

Node Health Check Operator enhancements

OpenShift Container Platform now supports control plane fencing on the Node Health Check Operator. In the event of node failure, you can follow remediation strategies on both worker nodes and control plane nodes. For more information, see the Workload Availability for Red Hat OpenShift documentation.

The Node Health Check Operator now also includes a web console plugin for managing Node Health Checks. For more information, see the Workload Availability for Red Hat OpenShift documentation.

For installing or updating to the latest version of the Node Health Check Operator, use the stable subscription channel. For more information, see the Workload Availability for Red Hat OpenShift documentation.

Monitoring

The monitoring stack for this release includes the following new and modified features.

Updates to monitoring stack components and dependencies

This release includes the following version updates for monitoring stack components and dependencies:

  • kube-state-metrics to 2.6.0

  • node-exporter to 1.4.0

  • prom-label-proxy to 0.5.0

  • Prometheus to 2.39.1

  • prometheus-adapter to 0.10.0

  • prometheus-operator to 0.60.1

  • Thanos to 0.28.1

Changes to alerting rules

Red Hat does not guarantee backward compatibility for recording rules or alerting rules.

  • New

    • Added the TelemeterClientFailures alert, which triggers when a cluster tries and fails to submit Telemetry data at a certain rate over a period of time. The alert fires when the rate of failed requests reaches 20% of the total rate of requests within a 15-minute window.

  • Changed

    • The KubeAggregatedAPIDown alert now waits 900 seconds rather than 300 seconds before sending a notification.

    • The NodeClockNotSynchronising and NodeClockSkewDetected alerts now only evaluate metrics from the node-exporter job.

    • The NodeRAIDDegraded and NodeRAIDDiskFailure alerts now include a device label filter to match only the value returned by mmcblk.p.|nvme.|sd.|vd.|xvd.|dm-.|dasd.+.

    • The PrometheusHighQueryLoad and ThanosQueryOverload alerts now also trigger when a high querying load exists on the query layer.

New option to specify pod topology spread constraints for monitoring components

You can now use pod topology spread constraints to control how Prometheus, Thanos Ruler, and Alertmanager pods are spread across a network topology when OpenShift Container Platform pods are deployed in multiple availability zones.

New option to improve data consistency for Prometheus Adapter

You can now configure an optional kubelet service monitor for Prometheus Adapter (PA) that improves data consistency across multiple autoscaling requests. Enabling this service monitor eliminates the possibility that two queries sent at the same time to PA might yield different results because the underlying PromQL queries executed by PA might be on different Prometheus servers.

Update to Alertmanager configuration for additional secret keys

With this release, if you configure an Alertmanager secret to hold additional keys and if the Alertmanager configuration references these keys as files (such as templates, TLS certificates, or tokens), your configuration settings must point to these keys by using an absolute path rather than a relative path. These keys are available under the /etc/alertmanager/config directory. In earlier releases of OpenShift Container Platform, you could use relative paths in your configuration to point to these keys because the Alertmanager configuration file was located in the same directory as the keys.

If you are upgrading to OpenShift Container Platform 4.12 and have specified relative paths for additional Alertmanager secret keys that are referenced as files, you must change these relative paths to absolute paths in your Alertmanager configuration. Otherwise, alert receivers that use the files will fail to deliver notifications.

New Network Observability Operator

As an administrator, you can now install the Network Observability Operator to observe the network traffic for OpenShift Container Platform cluster in the console. You can view and monitor the network traffic data in different graphical representations. The Network Observability Operator uses eBPF technology to create the network flows. The network flows are enriched with OpenShift Container Platform information, and stored in Loki. You can use the network traffic information for detailed troubleshooting and analysis.

For more information, see Network Observability.

Scalability and performance

Disabling realtime using workload hints removes Receive Packet Steering from the cluster

At the cluster level by default, a systemd service sets a Receive Packet Steering (RPS) mask for virtual network interfaces. The RPS mask routes interrupt requests from virtual network interfaces according to the list of reserved CPUs defined in the performance profile. At the container level, a CRI-O hook script also sets an RPS mask for all virtual network devices.

With this update, if you set spec.workloadHints.realTime in the performance profile to False, the system also disables both the systemd service and the CRI-O hook script which set the RPS mask. The system disables these RPS functions because RPS is typically relevant to use cases requiring low-latency, realtime workloads only.

To retain RPS functions even when you set spec.workloadHints.realTime to False, see the RPS Settings section of the Red Hat Knowledgebase solution Performance addons operator advanced configuration.

For more information about configuring workload hints, see Understanding workload hints.

Tuned profile

The tuned profile now defines the fs.aio-max-nr sysctl value by default, improving asynchronous I/O performance for default node profiles.

Support for new kernel features and options

The low latency tuning has been updated to use the latest kernel features and options. The fix for 2117780 introduced a new per-CPU kthread, ktimers. This thread must be pinned to the proper CPU cores. With this update, there is no functional change; the isolation of the workload is the same. For more information, see 2102450.

Power-saving configurations

In OpenShift Container Platform 4.12, by enabling C-states and OS-controlled P-states, you can use different power-saving configurations for critical and non-critical workloads. You can apply the configurations through the new perPodPowerManagement workload hint, and the cpu-c-states.crio.io and cpu-freq-governor.crio.io CRI-O annotations. For more information about the feature, see Power-saving configurations.

Expanding Single-node OpenShift clusters with worker nodes using GitOps ZTP (Technology Preview)

In OpenShift Container Platform 4.11, a feature allowing you to manually add worker nodes to single-node OpenShift clusters was introduced. This feature is now also available in GitOps ZTP.

Factory-precaching-cli tool to reduce OpenShift Container Platform and Operator deployment times (Technology Preview)

In OpenShift Container Platform 4.12, you can use the factory-precaching-cli tool to pre-cache OpenShift Container Platform and Operator images on a server at the factory, and then you can include the pre-cached server to the site for deployment. For more information about the factory-precaching-cli tool, see Pre-caching images for single-node OpenShift deployments.

Zero touch provisioning (ZTP) integration of the factory-precaching-cli tool (Technology Preview)

In OpenShift Container Platform 4.12, you can use the factory-precaching-cli tool in the GitOps ZTP workflow. For more information, see Pre-caching images for single-node OpenShift deployments.

Node tuning in a hosted cluster (Technology Preview)

You can now configure OS-level tuning for nodes in a hosted cluster by using the Node Tuning Operator. To configure node tuning, you can create config maps in the management cluster that contain Tuned objects, and reference those config maps in your node pools. The tuning configuration that is definied in the Tuned objects is applied to the nodes in the node pool. For more information, see Configuring node tuning in a hosted cluster.

Kernel module management Operator

The kernel module management (KMM) Operator replaces the Special Resource Operator (SRO). KMM includes the following features for connected environments only:

  • Hub and spoke support for edge deployments

  • Pre-flight checks for upgrade support

  • Secure boot kernel module signing

  • Must gather logs to assist with troubleshooting

  • Binary firmware deployment

Hub and spoke cluster support (Technology Preview)

For hub and spoke deployments in an environment that can access the internet, you can use the kernel module management (KMM) Operator deployed in the hub cluster to manage the deployment of the required kernel modules to one or more managed clusters.

Topology Aware Lifecycle Manager (TALM)

Topology Aware Lifecycle Manager (TALM) now provides more detailed status information and messages, and redesigned conditions. You can use the ClusterLabelSelector field for greater flexibility in selecting clusters for update. You can use timeout settings to determine what happens if an update fails for a cluster, for example, skipping the failing cluster and continuing to upgrade other clusters, or stopping policy remediation for all clusters. For more information see Topology Aware Lifecycle Manager for cluster updates.

Mount namespace encapsulation (Technology Preview)

Encapsulation is the process of moving all Kubernetes-specific mount points to an alternative namespace to reduce the visibility and performance impact of a large number of mount points in the default namespace. Previously, mount namespace encapsulation has been deployed transparently in OpenShift Container Platform specifically for Distributed Units (DUs) installed using GitOps ZTP. In OpenShift Container Platform v4.12, this functionality is now available as a configurable option.

A standard host operating system uses systemd to constantly scan all mount namespaces: both the standard Linux mounts and the numerous mounts that Kubernetes uses to operate. The current implementation of Kubelet and CRI-O both use the top-level namespace for all container and Kubelet mount points. Encapsulating these container-specific mount points in a private namespace reduces systemd overhead and enhances CPU performance. Encapsulation can also improve security, by storing Kubernetes-specific mount points in a location safe from inspection by unprivileged users.

Changing the workload partitioning CPU set in single-node OpenShift clusters that are deployed with GitOps ZTP

You can configure the workload partitioning CPU set in single-node OpenShift clusters that you deploy with GitOps ZTP. To do this, you specify cluster management CPU resources with the cpuset field of the SiteConfig custom resource (CR) and the reserved field of the group PolicyGenTemplate CR. The value that you set for cpuset should match the value set in the cluster PerformanceProfile CR .spec.cpu.reserved field for workload partitioning.

For more information, see Workload partitioning.

RHACM hub template functions now available for use with GitOps ZTP

Hub template functions are now available for use with GitOps ZTP using Red Hat Advanced Cluster Management (RHACM) and Topology Aware Lifecycle Manager (TALM). Hub-side cluster templates reduce the need to create separate policies for many clusters with similiar configurations but with different values. For more information, see Using hub templates in PolicyGenTemplate CRs.

ArgoCD managed cluster limits

RHACM uses SiteConfig CRs to generate the Day 1 managed cluster installation CRs for ArgoCD. Each ArgoCD application can manage a maximum of 300 SiteConfig CRs. For more information, see Configuring the hub cluster with ArgoCD.

GitOps ZTP support for configuring policy compliance evaluation timeouts in PolicyGenTemplate CRs

In GitOps ZTP v4.11+, a default policy compliance evaluation timeout value is available for use in PolicyGenTemplate custom resources (CRs). This value specifies how long the related ConfigurationPolicy CR can be in a state of policy compliance or non-compliance before RHACM re-evaluates the applied cluster policies.

Optionally, you can now override the default evaluation intervals for all policies in PolicyGenTemplate CRs.

Specifying the platform type for managed clusters

The Assisted Installer currently supports the following OpenShift Container Platform platforms:

  • BareMetal

  • VSphere

  • None

Single-node OpenShift does not support VSphere.

Configuring the hub cluster to use unauthenticated registries

This release supports the use of unauthenticated registries when configuring the hub cluster. Registries that do not require authentication are listed under spec.unauthenticatedRegistries in the AgentServiceConfig resource. Any registry on this list is not required to have an entry in the pull secret used for the spoke cluster installation. assisted-service validates the pull secret by making sure it contains the authentication information for every image registry used for installation.

Ironic agent mirroring in disconnected GitOps ZTP installations

For disconnected installations using GitOps ZTP, if you are deploying OpenShift Container Platform version 4.11 or earlier to a spoke cluster with converged flow enabled, you must mirror the default Ironic agent image to the local image repository. The default Ironic agent images are the following:

  • AMD64 Ironic agent image: quay.io/openshift-release-dev/ocp-v4.0-art-dev@sha256:d3f1d4d3cd5fbcf1b9249dd71d01be4b901d337fdc5f8f66569eb71df4d9d446

  • AArch64 Ironic agent image: quay.io/openshift-release-dev/ocp-v4.0-art-dev@sha256:cb0edf19fffc17f542a7efae76939b1e9757dc75782d4727fb0aa77ed5809b43

For more information about mirroring images, see Mirroring the OpenShift Container Platform image repository.

Configuring kernel arguments for the Discovery ISO by using GitOps ZTP

OpenShift Container Platform now supports specifying kernel arguments for the Discovery ISO in GitOps ZTP deployments. In both manual and automated GitOps ZTP deployments, the Discovery ISO is part of the OpenShift Container Platform installation process on managed bare-metal hosts. You can now edit the InfraEnv resource to specify kernel arguments for the Discovery ISO. This is useful for cluster installations with specific environmental requirements. For example, you can define the rd.net.timeout.carrier kernel argument to help configure the cluster for static networking.

Deploy heterogeneous spoke clusters from a hub cluster

With this update, you can create OpenShift Container Platform mixed-architecture clusters, also known as heterogeneous clusters, that feature hosts with both AMD64 and AArch64 CPU architectures. You can deploy a heterogeneous spoke cluster from a hub cluster managed by Red Hat Advanced Cluster Management (RHACM). To create a heterogeneous spoke cluster, add an AArch64 worker node to a deployed AMD64 cluster.

To add an AArch64 worker node to a deployed AMD64 cluster, you can specify the AArch64 architecture, the multi-architecture release image, and the operating system required for the node by using an InfraEnv custom resource (CR). You can then provision the AArch64 worker node to the AMD64 cluster by using the Assisted Installer API and the InfraEnv CR.

HTTP transport replaces AMQP for PTP and bare-metal events (Technology Preview)

HTTP is now the default transport in the PTP and bare-metal events infrastructure. AMQ Interconnect is end of life (EOL) from 30 June 2024.

Insights Operator

Insights alerts

In OpenShift Container Platform 4.12, active Insights recommendations are now presented to the user as alerts. You can view and configure these alerts with Alertmanager.

Insights Operator data collection enhancements

In OpenShift Container Platform 4.12, the Insights Operator now collects the following metrics:

  • console_helm_uninstalls_total

  • console_helm_upgrades_total

Authentication and authorization

Application credentials on RHOSP

You can now specify application credentials in the clouds.yaml files of clusters that run on Red Hat OpenStack Platform (RHOSP). Application credentials are an alternative to embedding user account details in configuration files. As an example, see the following section of a clouds.yaml file that includes user account details:

clouds:
    openstack:
        auth:
            auth_url: https://127.0.0.1:13000
            password: thepassword
            project_domain_name: Default
            project_name: theprojectname
            user_domain_name: Default
            username: theusername
        region_name: regionOne

Compare that section to one that uses application credentials:

clouds:
    openstack:
        auth:
            auth_url: https://127.0.0.1:13000
            application_credential_id: '5dc185489adc4b0f854532e1af81ffe0'
            application_credential_secret: 'PDCTKans2bPBbaEqBLiT_IajG8e5J_nJB4kvQHjaAy6ufhod0Zl0NkNoBzjn_bWSYzk587ieIGSlT11c4pVehA'
        auth_type: "v3applicationcredential"
        region_name: regionOne

To use application credentials with your cluster as a RHOSP administrator, create the credentials. Then, use them in a clouds.yaml file when you install a cluster. Alternatively, you can create the clouds.yaml file and rotate it into an existing cluster.

Hosted control planes (Technology Preview)

HyperShift API beta release now available

The default version for the hypershift.openshift.io API, which is the API for hosted control planes on OpenShift Container Platform, is now v1beta1. Currently, for an existing cluster, the move from alpha to beta is not supported.

Versioning for hosted control planes

With each major, minor, or patch version release of OpenShift Container Platform, the HyperShift Operator is released. The HyperShift command-line interface (CLI) is released as part of each HyperShift Operator release.

The HostedCluster and NodePool API resources are available in the beta version of the API and follow a similar policy to OpenShift Container Platform and Kubernetes.

Backing up and restoring etcd on a hosted cluster

If you use hosted control planes on OpenShift Container Platform, you can back up and restore etcd by taking a snapshot of etcd and uploading it to a location where you can retrieve it later, such as an S3 bucket. Later, if needed, you can restore the snapshot. For more information, see Backing up and restoring etcd on a hosted cluster.

Disaster recovery for a hosted cluster within an AWS region

In a situation where you need disaster recovery for a hosted cluster, you can recover the hosted cluster to the same region within AWS. For more information, see Disaster recovery for a hosted cluster within an AWS region.

Red Hat Virtualization (RHV)

This release provides several updates to Red Hat Virtualization (RHV). With this release:

  • The oVirt CSI driver logging was revised with new error messages to improve the clarity and readability of the logs.

  • The cluster API provider automatically updates oVirt and Red Hat Virtualization (RHV) credentials when they are changed in OpenShift Container Platform.

Notable technical changes

OpenShift Container Platform 4.12 introduces the following notable technical changes.

AWS Security Token Service regional endpoints

The Cloud Credential Operator utility (ccoctl) now creates secrets that use regional endpoints for the AWS Security Token Service (AWS STS). This approach aligns with AWS recommended best practices.

cert-manager Operator general availability

cert-manager Operator is generally available in OpenShift Container Platform 4.12.

Credentials requests directory parameter for deleting GCP resources with the Cloud Credential Operator utility

With this release, when you delete GCP resources with the Cloud Credential Operator utility, you must specify the directory containing the files for the component CredentialsRequest objects.

Future restricted enforcement for pod security admission

Currently, pod security violations are shown as warnings and logged in the audit logs, but do not cause the pod to be rejected.

Global restricted enforcement for pod security admission is currently planned for the next minor release of OpenShift Container Platform. When this restricted enforcement is enabled, pods with pod security violations will be rejected.

To prepare for this upcoming change, ensure that your workloads match the pod security admission profile that applies to them. Workloads that are not configured according to the enforced security standards defined globally or at the namespace level will be rejected. The restricted-v2 SCC admits workloads according to the Restricted Kubernetes definition.

If you are receiving pod security violations, see the following resources:

  • See Identifying pod security violations for information about how to find which workloads are causing pod security violations.

  • See Security context constraint synchronization with pod security standards to understand when pod security admission label synchronization is performed. Pod security admission labels are not synchronized in certain situations, such as the following situations:

    • The workload is running in a system-created namespace that is prefixed with openshift-.

    • The workload is running on a pod that was created directly without a pod controller.

  • If necessary, you can set a custom admission profile on the namespace or pod by setting the pod-security.kubernetes.io/enforce label.

Catalog sources and restricted pod security admission enforcement

Catalog sources built using the SQLite-based catalog format and a version of the opm CLI tool released before OpenShift Container Platform 4.11 cannot run under restricted pod security enforcement.

In OpenShift Container Platform 4.12, namespaces do not have restricted pod security enforcement by default and the default catalog source security mode is set to legacy.

If you do not want to run your SQLite-based catalog source pods under restricted pod security enforcement, you do not need to update your catalog source in OpenShift Container Platform 4.12. However, to ensure your catalog sources run in future OpenShift Container Platform releases, you must update your catalog sources to run under restricted pod security enforcement.

As a catalog author, you can enable compatibility with restricted pod security enforcement by completing either of the following actions:

  • Migrate your catalog to the file-based catalog format.

  • Update your catalog image with a version of the opm CLI tool released with OpenShift Container Platform 4.11 or later.

If you do not want to update your SQLite database catalog image or migrate your catalog to the file-based catalog format, you can configure your catalog to run with elevated permissions.

For more information, see Catalog sources and pod security admission.

Operator SDK 1.25.4

OpenShift Container Platform 4.12 supports Operator SDK 1.25.4. See Installing the Operator SDK CLI to install or update to this latest version.

Operator SDK 1.25.4 supports Kubernetes 1.25.

If you have Operator projects that were previously created or maintained with Operator SDK 1.22.2, update your projects to keep compatibility with Operator SDK 1.25.4.

LVM Operator is now called Logical Volume Manager Storage

The LVM Operator that was previously delivered with Red Hat OpenShift Data Foundation requires installation through the OpenShift Data Foundation. In OpenShift Container Platform v4.12, the LVM Operator has been renamed Logical Volume Manager Storage. Now, you install it as a standalone Operator from the OpenShift Operator catalog. Logical Volume Manager Storage provides dynamic provisioning of block storage on a single, limited resources single-node OpenShift cluster.

End of support for RHOSP 16.1

OpenShift Container Platform no longer supports RHOSP 16.1 as a deployment target. See OpenShift Container Platform on Red Hat OpenStack Platform Support Matrix for complete details.

Deprecated and removed features

Some features available in previous releases have been deprecated or removed.

Deprecated functionality is still included in OpenShift Container Platform and continues to be supported; however, it will be removed in a future release of this product and is not recommended for new deployments. For the most recent list of major functionality deprecated and removed within OpenShift Container Platform 4.12, refer to the table below. Additional details for more functionality that has been deprecated and removed are listed after the table.

In the following tables, features are marked with the following statuses:

  • General Availability

  • Deprecated

  • Removed

Operator deprecated and removed features

Table 2. Operator deprecated and removed tracker
Feature 4.10 4.11 4.12

SQLite database format for Operator catalogs

Deprecated

Deprecated

Deprecated

Images deprecated and removed features

Table 3. Images deprecated and removed tracker
Feature 4.10 4.11 4.12

ImageChangesInProgress condition for Cluster Samples Operator

Deprecated

Deprecated

Deprecated

MigrationInProgress condition for Cluster Samples Operator

Deprecated

Deprecated

Deprecated

Removal of Jenkins images from install payload

General Availability

Removed

Removed

Monitoring deprecated and removed features

Table 4. Monitoring deprecated and removed tracker
Feature 4.10 4.11 4.12

Grafana component in monitoring stack

Deprecated

Removed

Removed

Access to Prometheus and Grafana UIs in monitoring stack

Deprecated

Removed

Removed

Installation deprecated and removed features

Table 5. Installation deprecated and removed tracker
Feature 4.10 4.11 4.12

vSphere 6.x or earlier

Deprecated

Removed

Removed

vSphere 7.0 Update 1 or earlier

General Availability

Deprecated

Deprecated

VMware ESXi 6.x or earlier

Deprecated

Removed

Removed

VMware ESXi 7.0 Update 1 or earlier

General Availability

Deprecated

Deprecated

CoreDNS wildcard queries for the cluster.local domain

General Availability

General Availability

Deprecated

ingressVIP and apiVIP settings in the install-config.yaml file for installer-provisioned infrastructure clusters

General Availability

General Availability

Deprecated

Updating clusters deprecated and removed features

Table 6. Updating clusters deprecated and removed tracker
Feature 4.10 4.11 4.12

Virtual hardware version 13

Deprecated

Removed

Removed

Storage deprecated and removed features

Table 7. Storage deprecated and removed tracker
Feature 4.10 4.11 4.12

Snapshot.storage.k8s.io/v1beta1 API endpoint

Deprecated

Removed

Removed

Persistent storage using FlexVolume

Deprecated

Deprecated

Deprecated

Authentication and authorization deprecated and removed features

Table 8. Authentication and authorization deprecated and removed tracker
Feature 4.10 4.11 4.12

Automatic generation of service account token secrets

General Availability

Removed

Removed

Specialized hardware and driver enablement deprecated and removed features

Table 9. Specialized hardware and driver enablement deprecated and removed tracker
Feature 4.10 4.11 4.12

Special Resource Operator (SRO)

Technology Preview

Technology Preview

Removed

Multi-architecture deprecated and removed features

Table 10. Multi-architecture deprecated and removed tracker
Feature 4.10 4.11 4.12

IBM POWER8 all models (ppc64le)

General Availability

General Availability

Deprecated

IBM IBM POWER9 AC922 (ppc64le)

General Availability

General Availability

Deprecated

IBM IBM POWER9 IC922 (ppc64le)

General Availability

General Availability

Deprecated

IBM IBM POWER9 LC922 (ppc64le)

General Availability

General Availability

Deprecated

IBM z13 all models (s390x)

General Availability

General Availability

Deprecated

IBM LinuxONE Emperor (s390x)

General Availability

General Availability

Deprecated

IBM LinuxONE Rockhopper (s390x)

General Availability

General Availability

Deprecated

AMD64 (x86_64) v1 CPU

General Availability

General Availability

Deprecated

Networking deprecated and removed features

Table 11. Networking deprecated and removed tracker
Feature 4.10 4.11 4.12

Kuryr on RHOSP

General Availability

General Availability

Deprecated

Web console deprecated and removed features

Table 12. Web console deprecated and removed tracker
Feature 4.10 4.11 4.12

Multicluster console (Technology Preview)

REM

REM

REM

Deprecated features

Red Hat Virtualization (RHV) as a host platform for OpenShift Container Platform will be deprecated

Red Hat Virtualization (RHV) will be deprecated in an upcoming release of OpenShift Container Platform. Support for OpenShift Container Platform on RHV will be removed from a future OpenShift Container Platform release, currently planned as OpenShift Container Platform 4.14.

Wildcard DNS queries for the cluster.local domain are deprecated

CoreDNS will stop supporting wildcard DNS queries for names under the cluster.local domain. These queries will resolve in OpenShift Container Platform 4.12 as they do in earlier versions, but support will be removed from a future OpenShift Container Platform release.

Specific hardware models on ppc64le, s390x, and x86_64 v1 CPU architectures are deprecated

In OpenShift Container Platform 4.12, support for RHCOS functionality is deprecated for:

  • IBM POWER8 all models (ppc64le)

  • IBM POWER9 AC922 (ppc64le)

  • IBM POWER9 IC922 (ppc64le)

  • IBM POWER9 LC922 (ppc64le)

  • IBM z13 all models (s390x)

  • LinuxONE Emperor (s390x)

  • LinuxONE Rockhopper (s390x)

  • AMD64 (x86_64) v1 CPU

While these hardware models remain fully supported in OpenShift Container Platform 4.12, Red Hat recommends that you use later hardware models.

Kuryr support for clusters that run on RHOSP

In OpenShift Container Platform 4.12, support for Kuryr on clusters that run on RHOSP is deprecated. Support will be removed no earlier than OpenShift Container Platform 4.14.

Removed features

Beta APIs removed from Kubernetes 1.25

Kubernetes 1.25 removed the following deprecated APIs, so you must migrate manifests and API clients to use the appropriate API version. For more information about migrating removed APIs, see the Kubernetes documentation.

Table 13. APIs removed from Kubernetes 1.25
Resource Removed API Migrate to Notable changes

CronJob

batch/v1beta1

batch/v1

No

EndpointSlice

discovery.k8s.io/v1beta1

discovery.k8s.io/v1

Yes

Event

events.k8s.io/v1beta1

events.k8s.io/v1

Yes

HorizontalPodAutoscaler

autoscaling/v2beta1

autoscaling/v2

No

PodDisruptionBudget

policy/v1beta1

policy/v1

Yes

PodSecurityPolicy

policy/v1beta1

Pod Security Admission [1]

Yes

RuntimeClass

node.k8s.io/v1beta1

node.k8s.io/v1

No

  1. For more information about pod security admission in OpenShift Container Platform, see Understanding and managing pod security admission.

Empty file and stdout support for the oc registry login command

The --registry-config and --to option options for the oc registry login command now stop accepting empty files. These options continue to work with files that do not exist. The ability to write output to - (stdout) is also removed.

RHEL 7 support for the OpenShift CLI (oc) has been removed

Support for using Red Hat Enterprise Linux (RHEL) 7 with the OpenShift CLI (oc) has been removed. If you use the OpenShift CLI (oc) with RHEL, you must use RHEL 8 or later.

OpenShift CLI (oc) commands have been removed

The following OpenShift CLI (oc) commands were removed with this release:

  • oc adm migrate etcd-ttl

  • oc adm migrate image-references

  • oc adm migrate legacy-hpa

  • oc adm migrate storage

Grafana component removed from monitoring stack

The Grafana component is no longer a part of the OpenShift Container Platform 4.12 monitoring stack. As an alternative, go to ObserveDashboards in the OpenShift Container Platform web console to view monitoring dashboards.

Prometheus and Grafana user interface access removed from monitoring stack

Access to the third-party Prometheus and Grafana user interfaces have been removed from the OpenShift Container Platform 4.12 monitoring stack. As an alternative, click Observe in the OpenShift Container Platform web console to view alerting, metrics, dashboards, and metrics targets for monitoring components.

Support for virtual hardware version 13 is removed

In OpenShift Container Platform 4.11, support for virtual hardware version 13 is removed. Support for virtual hardware version 13 was deprecated in OpenShift Container Platform 4.9. Red Hat recommends that you use virtual hardware version 15 or later.

Support for snapshot v1beta1 API endpoint is removed

In OpenShift Container Platform 4.11, support for snapshot.storage.k8s.io/v1beta1 API endpoint is removed. Support for snapshot.storage.k8s.io/v1beta1 API endpoint was deprecated in OpenShift Container Platform 4.7. Red Hat recommends that you use snapshot.storage.k8s.io/v1. All objects created as v1beta1 are available through the v1 endpoint.

Support for manually deploying a custom scheduler has been removed

Support for deploying custom schedulers manually has been removed with this release. Use the Secondary Scheduler Operator for Red Hat OpenShift instead to deploy a custom secondary scheduler in OpenShift Container Platform.

Support for deploying single-node OpenShift with OpenShiftSDN has been removed

Support for deploying single-node OpenShift clusters with OpenShiftSDN has been removed with this release. OVN-Kubernetes is the default networking solution for single-node OpenShift deployments.

Removal of Jenkins images from install payload

  • OpenShift Container Platform 4.11 moves the "OpenShift Jenkins" and "OpenShift Agent Base" images to the ocp-tools-4 repository at registry.redhat.io so that Red Hat can produce and update the images outside the OpenShift Container Platform lifecycle. Previously, these images were in the OpenShift Container Platform install payload and the openshift4 repository at registry.redhat.io. For more information, see OpenShift Jenkins.

  • OpenShift Container Platform 4.11 removes "OpenShift Jenkins Maven" and "NodeJS Agent" images from its payload. Previously, OpenShift Container Platform 4.10 deprecated these images. Red Hat no longer produces these images, and they are not available from the ocp-tools-4 repository at registry.redhat.io.

    However, upgrading to OpenShift Container Platform 4.11 does not remove "OpenShift Jenkins Maven" and "NodeJS Agent" images from 4.10 and earlier releases. And Red Hat provides bug fixes and support for these images through the end of the 4.10 release lifecycle, in accordance with the OpenShift Container Platform lifecycle policy.

    For more information, see OpenShift Jenkins.

Future Kubernetes API removals

The next minor release of OpenShift Container Platform is expected to use Kubernetes 1.26. Currently, Kubernetes 1.26 is scheduled to remove several deprecated APIs.

See the Deprecated API Migration Guide in the upstream Kubernetes documentation for the list of planned Kubernetes API removals.

See Navigating Kubernetes API deprecations and removals for information about how to check your cluster for Kubernetes APIs that are planned for removal.

Bug fixes

API Server and Authentication

  • Previously, the Cluster Authentication Operator state was set to progressing = false after receiving a workloadIsBeingUpdatedTooLong error. At the same time, degraded = false was kept for the time of the inertia defined. Consequently, the shortened amount of progressing and increased time of degradedation would create a situation where progressing = false and degraded = false were set prematurely. This caused inconsistent OpenShift CI tests because a healthy state was assumed, which was incorrect. This issue has been fixed by removing the progressing = false setting after the workloadIsBeingUpdatedTooLong error is returned. Now, because there is no progressing = false state, OpenShift CI tests are more consistent. (BZ#2111842)

Bare Metal Hardware Provisioning

  • In recent versions of server firmware the time between server operations has increased. This causes timeouts during installer-provisioned infrastructure installations when the OpenShift Container Platform installation program waits for a response from the Baseboard Management Controller (BMC). The new python3-sushy release increases the number of server side attempts to contact the BMC. This update accounts for the extended waiting time and avoids timeouts during installation. (OCPBUGS-4097)

  • Before this update, the Ironic provisioning service did not support Baseboard Management Controllers (BMC) that use weak eTags combined with strict eTag validation. By design, if the BMC provides a weak eTag, Ironic returns two eTags: the original eTag and the original eTag converted to the strong format for compatibility with BMC that do not support weak eTags. Although Ironic can send two eTags, BMC using strict eTag validation rejects such requests due to the presence of the second eTag. As a result, on some older server hardware, bare-metal provisioning failed with the following error: HTTP 412 Precondition Failed. In OpenShift Container Platform 4.12 and later, this behavior changes and Ironic no longer attempts to send two eTags in cases where a weak eTag is provided. Instead, if a Redfish request dependent on an eTag fails with an eTag validation error, Ironic retries the request with known workarounds. This minimizes the risk of bare-metal provisioning failures on machines with strict eTag validation. (OCPBUGS-3479)

  • Before this update, when a Redfish system features a Settings URI, the Ironic provisioning service always attempts to use this URI to make changes to boot-related BIOS settings. However, bare-metal provisioning fails if the Baseboard Management Controller (BMC) features a Settings URI but does not support changing a particular BIOS setting by using this Settings URI. In OpenShift Container Platform 4.12 and later, if a system features a Settings URI, Ironic verifies that it can change a particular BIOS setting by using the Settings URI before proceeding. Otherwise, Ironic implements the change by using the System URI. This additional logic ensures that Ironic can apply boot-related BIOS setting changes and bare-metal provisioning can succeed. (OCPBUGS-2052)

Builds

  • By default, Buildah prints steps to the log file, including the contents of environment variables, which might include build input secrets. Although you can use the --quiet build argument to suppress printing of those environment variables, this argument isn’t available if you use the source-to-image (S2I) build strategy. The current release fixes this issue. To suppress printing of environment variables, set the BUILDAH_QUIET environment variable in your build configuration:

    sourceStrategy:
    ...
      env:
        - name: "BUILDAH_QUIET"
          value: "true"

Cloud Compute

  • Previously, instances were not set to respect the GCP infrastructure default option for automated restarts. As a result, instances could be created without using the infrastructure default for automatic restarts. This sometimes meant that instances were terminated in GCP but their associated machines were still listed in the Running state because they did not automatically restart. With this release, the code for passing the automatic restart option has been improved to better detect and pass on the default option selection from users. Instances now use the infrastructure default properly and are automatically restarted when the user requests the default functionality. (OCPBUGS-4504)

  • The v1beta1 version of the PodDisruptionBudget object is now deprecated in Kubernetes. With this release, internal references to v1beta1 are replaced with v1. This change is internal to the cluster autoscaler and does not require user action beyond the advice in the Preparing to upgrade to OpenShift Container Platform 4.12 Red Hat Knowledgebase Article. (OCPBUGS-1484)

  • Previously, the GCP machine controller reconciled the state of machines every 10 hours. Other providers set this value to 10 minutes so that changes that happen outside of the Machine API system are detected within a short period. The longer reconciliation period for GCP could cause unexpected issues such as missing certificate signing requests (CSR) approvals due to an external IP address being added but not detected for an extended period. With this release, the GCP machine controller is updated to reconcile every 10 minutes to be consistent with other platforms and so that external changes are picked up sooner. (OCPBUGS-4499)

  • Previously, due to a deployment misconfiguration for the Cluster Machine Approver Operator, enabling the TechPreviewNoUpgrade feature set caused errors and sporadic Operator degradation. Because clusters with the TechPreviewNoUpgrade feature set enabled use two instances of the Cluster Machine Approver Operator and both deployments used the same set of ports, there was a conflict that lead to errors for single-node topology. With this release, the Cluster Machine Approver Operator deployment is updated to use a different set of ports for different deployments. (OCPBUGS-2621)

  • Previously, the scale from zero functionality in Azure relied on a statically compiled list of instance types mapping the name of the instance type to the number of CPUs and the amount of memory allocated to the instance type. This list grew stale over time. With this release, information about instance type sizes is dynamically gathered from the Azure API directly to prevent the list from becoming stale. (OCPBUGS-2558)

  • Previously, Machine API termination handler pods did not start on spot instances. As a result, pods that were running on tainted spot instances did not receive a termination signal if the instance was terminated. This could result in loss of data in workload applications. With this release, the Machine API termination handler deployment is modified to tolerate the taints and pods running on spot instances with taints now receive termination signals. (OCPBUGS-1274)

  • Previously, error messages for Azure clusters did not explain that it is not possible to create new machines with public IP addresses for a disconnected install that uses only the internal publish strategy. With this release, the error message is updated for improved clarity. (OCPBUGS-519)

  • Previously, the Cloud Controller Manager Operator did not check the cloud-config configuration file for AWS clusters. As a result, it was not possible to pass additional settings to the AWS cloud controller manager component by using the configuration file. With this release, the Cloud Controller Manager Operator checks the infrastructure resource and parses references to the cloud-config configuration file so that users can configure additional settings. (BZ#2104373)

  • Previously, when Azure added new instance types and enabled accelerated networking support on instance types that previously did not have it, the list of Azure instances in the machine controller became outdated. As a result, the machine controller could not create machines with instance types that did not previously support accelerated networking, even if they support this feature on Azure. With this release, the required instance type information is retrieved from Azure API before the machine is created to keep it up to date so the machine controller is able to create machines with new and updated instance types. This fix also applies to any instance types that are added in the future. (BZ#2108647)

  • Previously, the cluster autoscaler did not respect the AWS, IBM Cloud, and Alibaba Cloud topology labels for the CSI drivers when using the Cluster API provider. As a result, nodes with the topology label were not processed properly by the autoscaler when attempting to balance nodes during a scale-out event. With this release, the autoscaler’s custom processors are updated so that it respects this label. The autoscaler can now balance similar node groups that are labeled by the AWS, IBM Cloud, or Alibaba CSI labels. (BZ#2001027)

  • Previously, Power VS cloud providers were not capable of fetching the machine IP address from a DHCP server. Changing the IP address did not update the node, which caused some inconsistencies, such as pending certificate signing requests. With this release, the Power VS cloud provider is updated to fetch the machine IP address from the DHCP server so that the IP addresses for the nodes are consistent with the machine IP address. (BZ#2111474)

  • Previously, machines created in early versions of OpenShift Container Platform with invalid configurations could not be deleted. With this release, the webhooks that prevent the creation of machines with invalid configurations no longer prevent the deletion of existing invalid machines. Users can now successfully remove these machines from their cluster by manually removing the finalizers on these machines. (BZ#2101736)

  • Previously, short DHCP lease times, caused by NetworkManager not being run as a daemon or in continuous mode, caused machines to become stuck during initial provisioning and never become nodes in the cluster. With this release, extra checks are added so that if a machine becomes stuck in this state it is deleted and recreated automatically. Machines that are affected by this network condition can become nodes after a reboot from the Machine API controller. (BZ#2115090)

  • Previously, when creating a new Machine resource using a machine profile that does not exist in IBM Cloud, the machines became stuck in the Provisioning phase. With this release, validation is added to the IBM Cloud Machine API provider to ensure that a machine profile exists, and machines with an invalid machine profile are rejected by the Machine API. (BZ#2062579)

  • Previously, the Machine API provider for AWS did not verify that the security group defined in the machine specification exists. Instead of returning an error in this case, it used a default security group, which should not be used for OpenShift Container Platform machines, and successfully created a machine without informing the user that the default group was used. With this release, the Machine API returns an error when users set either incorrect or empty security group names in the machine specification. (BZ#2060068)

  • Previously, the Machine API provider Azure did not treated user-provided values for instance types as case sensitive. This led to false-positive errors when instance types were correct but did not match the case. With this release, instance types are converted to the lowercase characters so that users get correct results without false-positive errors for mismatched case. (BZ#2085390)

  • Previously, there was no check for nil values in the annotations of a machine object before attempting to access the object. This situation was rare, but caused the machine controller to panic when reconciling the machine. With this release, nil values are checked and the machine controller is able to reconcile machines without annotations. (BZ#2106733)

  • Previously, the cluster autoscaler metrics for cluster CPU and memory usage would never reach, or exceed, the limits set by the ClusterAutoscaler resource. As a result, no alerts were fired when the cluster autoscaler could not scale due to resource limitations. With this release, a new metric called cluster_autoscaler_skipped_scale_events_count is added to the cluster autoscaler to more accurately detect when resource limits are reached or exceeded. Alerts will now fire when the cluster autoscaler is unable to scale the cluster up because it has reached the cluster resource limits. (BZ#1997396)

  • Previously, when the Machine API provider failed to fetch the machine IP address, it would not set the internal DNS name and the machine certificate signing requests were not automatically approved. With this release, the Power VS machine provider is updated to set the server name as the internal DNS name even when it fails to fetch the IP address. (BZ#2111467)

  • Previously, the Machine API vSphere machine controller set the PowerOn flag when cloning a VM. This created a PowerOn task that the machine controller was not aware of. If that PowerOn task failed, machines were stuck in the Provisioned phase but never powered on. With this release, the cloning sequence is altered to avoid the issue. Additionally, the machine controller now retries powering on the VM in case of failure and reports failures properly. (BZ#2087981, OCPBUGS-954)

  • With this release, AWS security groups are tagged immediately instead of after creation. This means that fewer requests are sent to AWS and the required user privileges are lowered. (BZ#2098054, OCPBUGS-3094)

  • Previously, a bug in the RHOSP legacy cloud provider resulted in a crash if certain RHOSP operations were attempted after authentication had failed. For example, shutting down a server causes the Kubernetes controller manager to fetch server information from RHOSP, which triggered this bug. As a result, if initial cloud authentication failed or was configured incorrectly, shutting down a server caused the Kubernetes controller manager to crash. With this release, the RHOSP legacy cloud provider is updated to not attempt any RHOSP API calls if it has not previously authenticated successfully. Now, shutting down a server with invalid cloud credentials no longer causes Kubernetes controller manager to crash. (BZ#2102383)

Developer Console

  • Previously, the openshift-config namespace was hard coded for the HelmChartRepository custom resource, which was the same namespace for the ProjectHelmChartRepository custom resource. This prevented users from adding private ProjectHelmChartRepository custom resources in their desired namespace. Consequently, users were unable to access secrets and configmaps in the openshift-config namespace. This update fixes the ProjectHelmChartRepository custom resource definition with a namespace field that can read the secret and configmaps from a namespace of choice by a user with the correct permissions. Additionally, the user can add secrets and configmaps to the accessible namespace, and they can add private Helm chart repositories in the namespace used the creation resources. (BZ#2071792)

Image Registry

  • Previously, the image trigger controller did not have permissions to change objects. Consequently, image trigger annotations did not work on some resources. This update creates a cluster role binding that provides the controller the required permissions to update objects according to annotations. (BZ#2055620)

  • Previously, the Image Registry Operator did not have a progressing condition for the node-ca daemon set and used generation from an incorrect object. Consequently, the node-ca daemon set could be marked as degraded while the Operator was still running. This update adds the progressing condition, which indicates that the installation is not complete. As a result, the Image Registry Operator successfully installs the node-ca daemon set, and the installer waits until it is fully deployed. ([BZ#2093440)

Installer

  • Previously, the number of supported user-defined tags was 8, and reserved OpenShift Container Platform tags were 2 for AWS resources. With this release, the number of supported user-defined tags is now 25 and reserved OpenShift Container Platform tags are 25 for AWS resources. You can now add up to 25 user tags during installation. (CFE#592)

  • Previously, installing a cluster on Amazon Web Services started and then failed when the IAM administrative user was not assigned the s3:GetBucketPolicy permission. This update adds this policy to checklist that the installation program uses to ensure that all of the required permissions are assigned. As a result, the installation program now stops the installation with a warning that the IAM administrative user is missing the s3:GetBucketPolicy permission. (BZ#2109388)

  • Previously, installing a cluster on Microsoft Azure failed when the Azure DCasv5-series or DCadsv5-series of confidential VMs were specified as control plane nodes. With this update, the installation program now stops the installation with an error, which states that confidential VMs are not yet supported. (BZ#2055247)

  • Previously, gathering bootstrap logs was not possible until the control plane machines were running. With this update, gathering bootstrap logs now only requires that the bootstrap machine be available. (BZ#2105341)

  • Previously, if a cluster failed to install on Google Cloud Platform because the service account had insufficient permissions, the resulting error message did not mention this as the cause of the failure. This update improves the error message, which now instructs users to check the permissions that are assigned to the service account. (BZ#2103236)

  • Previously, when an installation on Google Cloud provider (GCP) failed because an invalid GCP region was specified, the resulting error message did not mention this as the cause of the failure. This update improves the error message, which now states the region is not valid. (BZ#2102324)

  • Previously, cluster installations using Hive could fail if Hive used an older version of the install-config.yaml file. This update allows the installation program to accept older versions of the install-config.yaml file provided by Hive. (BZ#2098299)

  • Previously, the installation program would incorrectly allow the apiVIP and ingressVIP parameters to use the same IPv6 address if they represented the address differently, such as listing the address in an abbreviated format. In this update, the installer correctly validates these two parameters regardless of their formatting, requiring separate IP addresses for each parameter. (BZ#2103144)

  • Previously, uninstalling a cluster using the installation program failed to delete all resources in clusters installed on GCP if the cluster name was more than 22 characters long. In this update, uninstalling a cluster using the installation program correctly locates and deletes all GCP cluster resources in cases of long cluster names. (BZ#2076646)

  • Previously, when installing a cluster on Red Hat OpenStack Platform (RHOSP) with multiple networks defined in the machineNetwork parameter, the installation program only created security group rules for the first network. With this update, the installation program creates security group rules for all networks defined in the machineNetwork so that users no longer need to manually edit security group rules after installation. (BZ#2095323)

  • Previously, users could manually set the API and Ingress virtual IP addresses to values that conflicted with the allocation pool of the DHCP server when installing a cluster on OpenStack. This could cause the DHCP server to assign one of the VIP addresses to a new machine, which would fail to start. In this update, the installation program validates the user-provided VIP addresses to ensure that they do not conflict with any DHCP pools. (BZ#1944365)

  • Previously, when installing a cluster on vSphere using a datacenter that is embedded inside a folder, the installation program could not locate the datacenter object, causing the installation to fail. In this update, the installation program can traverse the directory that contains the datacenter object, allowing the installation to succeed. (BZ#2097691)

  • Previously, when installing a cluster on Azure using arm64 architecture with installer-provisioned infrastructure, the image definition resource for hyperVGeneration V1 incorrectly had an architecture value of x64. With this update, the image definition resource for hyperVGeneration V1 has the correct architecture value of Arm64. (OCPBUGS-3639)

  • Previously, when installing a cluster on VMware vSphere, the installation could fail if the user specified a user-defined folder in the failureDomain section of the install-config.yaml file. With this update, the installation program correctly validates user-defined folders in the failureDomain section of the install-config.yaml file. (OCPBUGS-3343)

  • Previously, when destroying a partially deployed cluster after an installation failed on VMware vSphere, some virtual machine folders were not destroyed. This error could occur in clusters configured with multiple vSphere datacenters or multiple vSphere clusters. With this update, all installer-provisioned infrastructure is correctly deleted when destroying a partially deployed cluster after an installation failure. (OCPBUGS-1489)

  • Previously, when installing a cluster on VMware vSphere, the installation failed if the user specified the platform.vsphere.vcenters parameter but did not specify the platform.vsphere.failureDomains.topology.networks parameter in the install-config.yaml file. With this update, the installation program alerts the user that the platform.vsphere.failureDomains.topology.networks field is required when specifying platform.vsphere.vcenters. (OCPBUGS-1698)

  • Previously, when installing a cluster on VMware vSphere, the installation failed if the user defined the platform.vsphere.vcenters and platform.vsphere.failureDomains parameters but did not define platform.vsphere.defaultMachinePlatform.zones, or compute.platform.vsphere.zones and controlPlane.platform.vsphere.zones. With this update, the installation program validates that the user has defined the zones parameter in multi-region or multi-zone deployments prior to installation. (OCPBUGS-1490)

Kubernetes Controller Manager

  • Previously, the Kubernetes Controller Manager Operator reported degraded on environments without a monitoring stack presence. With this update, the Kubernetes Controller Manager Operator skips checking the monitoring for cues about degradation when the monitoring stack is not present. (BZ#2118286)

  • With this update, Kubernetes Controller Manager alerts (KubeControllerManagerDown, PodDisruptionBudgetAtLimit, PodDisruptionBudgetLimit, and GarbageCollectorSyncFailed) have links to Github runbooks. The runbooks help users to understand debug these alerts. (BZ#2001409)

Kubernetes Scheduler

  • Previously, the secondary scheduler deployment was not deleted after a secondary scheduler custom resource was deleted. Consequently, the Secondary Schedule Operator and Operand were not fully uninstalled. With this update, the correct owner reference is set in the secondary scheduler custom resource so that it points to the secondary scheduler deployment. As a result, secondary scheduler deployments are deleted when the secondary scheduler custom resource is deleted. (BZ#2100923)

  • For the OpenShift Container Platform 4.12 release, the descheduler can now publish events to an API group because the release adds additional role-based access controls (RBAC) rules to the descheduler’s profile.(OCPBUGS-2330)

Machine Config Operator

  • Previously, the Machine Config Operator (MCO) ControllerConfig resource, which contains important certificates, was only synced if the Operator’s daemon sync succeeded. By design, unready nodes during a daemon sync prevent that daemon sync from succeeding, so unready nodes were indirectly preventing the ControllerConfig resource, and therefore those certificates, from syncing. This resulted in eventual cluster degradation when there were unready nodes due to inability to rotate the certificates contained in the ControllerConfig resource. With this release, the sync of the ControllerConfig resource is no longer dependent on the daemon sync succeeding, so the ControllerConfig resource now continues to sync if the daemon sync fails. This means that unready nodes no longer prevent the ControllerConfig resource from syncing, so certificates continue to be updated even when there are unready nodes. (BZ#2034883)

Management Console

  • Previously, the Operator details page attempted to display multiple error messages, but the error message component can only display a single error message at a time. As a result, relevant error messages were not displayed. With this update, the Operator details page displays only the first error message so the user sees a relevant error. (OCPBUGS-3927)

  • Previously, the product name for Azure Red Hat OpenShift was incorrect in Customer Case Management (CCM). As a result, the console had to use the same incorrect product name to correctly populate the fields in CCM. Once the product name in CCM was updated, the console needed to be updated as well. With this update, the same, correct product name as CCM is correctly populated with the correct Azure product name when following the link from the console. (OCPBUGS-869)

  • Previously, when a plugin page resulted in an error, the error did not reset when navigating away from the error page, and the error persisted after navigating to a page that was not the cause of the error. With this update, the error state is reset to its default when a user navigates to a new page, and the error no longer persists after navigating to a new page. (BZ#2117738, OCPBUGS-523)

  • Previously, the View it here link in the Operator details pane for installed Operators was incorrectly built when All Namespaces was selected. As a result, the link attempted to navigate to the Operator details page for a cluster service version (CSV) in All Projects, which is an invalid route. With this update, the View it here link to use the namespace where the CSV is installed now builds correctly and the link works as expected. (OCPBUGS-184)

  • Previously, line numbers with more than five digits resulted in a cosmetic issue where the line number overlaid the vertical divider between the line number and the line contents making it harder to read. With this update, the amount of space available for line numbers was increased to account for longer line numbers, and the line number no longer overlays the vertical divider. (OCPBUGS-183)

  • Previously, in the administrator perspective of the web console, the link to Learn more about the OpenShift local update services on the Default update server pop-up window in the Cluster Settings page produced a 404 error. With this update, the link works as expected. (BZ#2098234)

  • Previously, the MatchExpression component did not account for array-type values. As a result, only single values could be entered through forms using this component. With this update, the MatchExpression component accepts comma-separated values as an array. (BZ#207690)

  • Previously, there were redundant checks for the model resulting in tab reloading which occasionally resulted in a flickering of the tab contents where they rerendered. With this update, the redundant model check was removed, and the model is only checked once. As a result, the tab contents do not flicker and no longer rerender. (BZ#2037329)

  • Previously, when selecting the edit label from the action list on the OpenShift Dedicated node page, no response was elicited and a web hook error was returned. This issue has been fixed so that the error message is only returned when editing fails. (BZ#2102098)

  • Previously, if issues were pending, clicking on the Insights link would crash the page. As a workaround, you can wait for the variable to become initialized before clicking the Insights link. As a result, the Insights page will open as expected. (BZ#2052662)

  • Previously, when the MachineConfigPool resource was paused, the option to unpause said Resume rollouts. The wording has been updated so that it now says Resume updates. (BZ#2094240)

  • Previously, the wrong calculating method was used when counting master and worker nodes. With this update, the correct worker nodes are calculated when nodes have both the master and worker role. (BZ#1951901)

  • Previously, conflicting react-router routes for ImageManifestVuln resulted in attempts to render a details page for ImageManifestVuln with a ~new name. Now, the container security plugin has been updated to remove conflicting routes and to ensure dynamic lists and details page extensions are used on the Operator details page. As a result, the console renders the correct create, list, and details pages for ImageManifestVuln. (BZ#2080260)

  • Previously, incomplete YAML was not synced was occasionally displayed to users. With this update, synced YAML always displays. (BZ#2084453)

  • Previously, when installing an Operator that required a custom resource (CR) to be created for use, the Create resource button could fail to install the CR because it was pointing to the incorrect namespace. With this update, the Create resource button works as expected. (BZ#2094502)

  • Previously, the Cluster update modal was not displaying errors properly. As a result, the Cluster update modal did not display or explain errors when they occurred. With this update, the Cluster update modal correctly display errors. (BZ#2096350)

Monitoring

  • Before this update, cluster administrators could not distinguish between a pod being not ready because of a scheduling issue and a pod being not ready because it could not be started by the kubelet. In both cases, the KubePodNotReady alert would fire. With this update, the KubePodNotScheduled alert now fires when a pod is not ready because of a scheduling issue, and the KubePodNotReady alert fires when a pod is not ready because it could not be started by the kubelet. (OCPBUGS-4431)

  • Before this update, node_exporter would report metrics about virtual network interfaces such as tun interfaces, br interfaces, and ovn-k8s-mp interfaces. With this update, metrics for these virtual interfaces are no longer collected, which decreases monitoring resource consumption. (OCPBUGS-1321)

  • Before this update, Alertmanager pod startup might time out because of slow DNS resolution, and the Alertmanager pods would not start. With this release, the timeout value has been increased to seven minutes, which prevents pod startup from timing out. (BZ#2083226)

  • Before this update, if Prometheus Operator failed to run or schedule Prometheus pods, the system provided no underlying reason for the failure. With this update, if Prometheus pods are not run or scheduled, the Cluster Monitoring Operator updates the clusterOperator monitoring status with a reason for the failure, which can be used to troubleshoot the underlying issue. (BZ#2043518)

  • Before this update, if you created an alert silence from the Developer perspective in the OpenShift Container Platform web console, external labels were included that did not match the alert. Therefore, the alert would not be silenced. With this update, external labels are now excluded when you create a silence in the Developer perspective so that newly created silences function as expected. (BZ#2084504)

  • Previously, if you enabled an instance of Alertmanager dedicated to user-defined projects, a misconfiguration could occur in certain circumstances, and you would not be informed that the user-defined project Alertmanager config map settings did not load for either the main instance of Alertmanager or the instance dedicated to user-defined projects. With this release, if this misconfiguration occurs, the Cluster Monitoring Operator now displays a message that informs you of the issue and provides resolution steps. (BZ#2099939)

  • Before this update, if the Cluster Monitoring Operator (CMO) failed to update Prometheus, the CMO did not verify whether a previous deployment was running and would report that cluster monitoring was unavailable even if one of the Prometheus pods was still running. With this update, the CMO now checks for running Prometheus pods in this situation and reports that cluster monitoring is unavailable only if no Prometheus pods are running. (BZ#2039411)

  • Before this update, if you configured OpsGenie as an alert receiver, a warning would appear in the log that api_key and api_key_file are mutually exclusive and that api_key takes precedence. This warning appeared even if you had not defined api_key_file. With this update, this warning only appears in the log if you have defined both api_key and api_key_file. (BZ#2093892)

  • Before this update the Telemeter Client (TC) only loaded new pull secrets when it was manually restarted. Therefore, if a pull secret had been changed or updated and the TC had not been restarted, the TC would fail to authenticate with the server. This update addresses the issue so that when the secret is rotated, the deployment is automatically restarted and uses the updated token to authenticate. (BZ#2114721)

Networking

  • Previously, routers that were in the terminating state delayed the oc cp command which would delay the oc adm must-gather command until the pod was terminated. With this update, a timeout for each issued oc cp command is set to prevent delaying the must-gather command from running. As a result, terminating pods no longer delay must-gather commands. (BZ#2103283)

  • Previously, an Ingress Controller could not be configured with both the Private endpoint publishing strategy type and PROXY protocol. With this update, users can now configure an Ingress Controller with both the Private endpoint publishing strategy type and PROXY protocol. (BZ#2104481)

  • Previously, the routeSelector parameter cleared the route status of the Ingress Controller prior to the router deployment. Because of this, the route status repopulated incorrectly. To avoid using stale data, route status detection has been updated to no longer rely on the Kubernetes object cache. Additionally, this update includes a fix to check the generation ID on route deployment to determine the route status. As a result, the route status is consistently cleared with a routeSelector update. (BZ#2101878)

  • Previously, a cluster that was upgraded from a version of OpenShift Container Platform earlier than 4.8 could have orphaned Route objects. This was caused by earlier versions of OpenShift Container Platform translating Ingress objects into Route objects irrespective of a given Ingress object’s indicated IngressClass. With this update, an alert is sent to the cluster administrator about any orphaned Route objects still present in the cluster after Ingress-to-Route translation. This update also adds another alert that notifies the cluster administrator about any Ingress objects that do not specify an IngressClass. (BZ#1962502)

  • Previously, if a configmap that the router deployment depends on is not created, then the router deployment does not progress. With this update, the cluster Operator reports ingress progressing=true if the default ingress controller deployment is progressing. This results in users debugging issues with the ingress controller by using the command oc get co. (BZ#2066560)

  • Previously, when an incorrectly created network policy was added to the OVN-Kubernetes cache, it would cause the OVN-Kubernetes leader to enter crashloopbackoff status. With this update, OVN-Kubernetes leader does not enter crashloopbackoff status by skipping deleting nil policies. (BZ#2091238)

  • Previously, recreating an EgressIP pod with the same namespace or name within 60 seconds of deleting an older one with the same namespace or name causes the wrong SNAT to be configured. As a result, packets could go out with nodeIP instead of EgressIP SNAT. With this update, traffic leaves the pod with EgressIP instead of nodeIP. (BZ#2097243).

  • Previously, older Access Control Lists (ACL)s with arp produced unexpectedly found multiple equivalent ACLs (arp v/s arp||nd) errors due to a change in the ACL from arp to arp II nd. This prevented network policies from being created properly. With this update, older ACLs with just the arp match have been removed so that only ACLs with the new arp II nd match exist so that network policies can be created correctly and no errors will be observed on ovnkube-master. NOTE: This effects customers upgrading into 4.8.14, 4.9.32, 4.10.13 or higher from older versions. (BZ#2095852).

  • With this update, CoreDNS has been updated to version 1.10.0, which is based on Kubernetes 1.25. This keeps both the CoreDNS version and OpenShift Container Platform 4.12, which is also based on Kubernetes 1.25, in alignment with one another. (OCPBUGS-1731)

  • With this update, the OpenShift Container Platform router now uses k8s.io/client-go version 1.25.2, which supports Kubernetes 1.25. This keeps both the openshift-router and OpenShift Container Platform 4.12, which is also based on Kubernetes 1.25, in alignment with one another. (OCPBUGS-1730)

  • With this update, the Ingress Operator now uses k8s.io/client-go version 1.25.2, which supports Kubernetes 1.25. This keeps both the Ingress Operator and OpenShift Container Platform 4.12, which is also based on Kubernetes 1.25, in alignment with one another. (OCPBUGS-1554)

  • Previously, the DNS Operator did not reconcile the openshift-dns namespace. Because OpenShift Container Platform 4.12 requires the openshift-dns namespace to have pod-security labels, this caused the namespace to be missing those labels upon cluster update. Without the pod-security labels, the pods failed to start. With this update, the DNS Operator now reconciles the openshift-dns namespace, and the pod-security labels are now present. As a result, pods start as expected. (OCPBUGS-1549)

  • Previously, the ingresscontroller.spec.tuniningOptions.reloadInterval did not support decimal numerals as valid parameter values because the Ingress Operator internally converts the specified value into milliseconds, which was not a supported time unit. This prevented an Ingress Controller from being deleted. With this update, ingresscontroller.spec.tuningOptions.reloadInterval now supports decimal numerals and users can delete Ingress Controllers with reloadInterval parameter values which were previously unsupported. (OCPBUGS-236)

  • Previously, the Cluster DNS Operator used GO Kubernetes libraries that were based on Kubernetes 1.24 while OpenShift Container Platform 4.12 is based on Kubernetes 1.25. With this update, GO Kubernetes API is v1.25.2, which aligns the Cluster DNS Operator with OpenShift Container Platform 4.12 that uses Kubernetes 1.25 APIs. (link: OCPBUGS-1558)

  • Previously, setting the disableNetworkDiagnostics configuration to true did not persist when the network-operator pod was re-created. With this update, the disableNetworkDiagnostics configuration property of network operator.openshift.io/cluster no longer resets to its default value after network operator restart. (OCPBUGS-392)

  • Previously, ovn-kubernetes did not configure the correct MAC address of bonded interfaces in br-ex bridge. As a result, a node that uses bonding for the primary Kubernetes interface fails to join the cluster. With this update, ovn-kubernetes configures the correct MAC address of bonded interfaces in br-ex bridge, and nodes that use bonding for the primary Kubernetes interface successfully join the cluster. (BZ2096413)

  • Previously, when the Ingress Operator was configured to enable the use of mTLS, the Operator would not check if CRLs needed updating until some other event caused it to reconcile. As a result, CRLs used for mTLS could become out of date. With this update, the Ingress Operator now automatically reconciles when any CRL expires, and CRLs will be updated at the time specified by their nextUpdate field. (BZ#2117524)

Node

  • Previously, a symlinks error message was printed out as raw data instead of formatted as an error, making it difficult to understand. This fix formats the error message properly, so that it is easily understood. (BZ#1977660)

  • Previously, kubelet hard eviction thresholds were different from Kubernetes defaults when a performance profile was applied to a node. With this release, the defaults have been updated to match the expected Kubernetes defaults. (OCPBUGS-4362).

OpenShift CLI (oc)

  • The OpenShift Container Platform 4.12 release fixes an issue with entering a debug session on a target node when the target namespace lacks the appropriate security level. This caused the oc CLI to prompt you with a pod security error message. If the existing namespace does not contain the appropriate security levels, OpenShift Container Platform now creates a temporary namespace when you enter oc debug mode on a target node. (OCPBUGS-852)

  • Previously, on macOS arm64 architecture, the oc binary needed to be signed manually. As a result, the oc binary did not work as expected. This update implements a self-signing binary for oc mimicking. As a result, the oc binary on macOS arm64 architectures works properly. (BZ#2059125)

  • Previously, must-gather was trying to collect resources that were not present on the server. Consequently, must-gather would print error messages. Now, before collecting resources, must-gather checks whether the resource exists. As a result, must-gather no longer prints an error when it fails to collect non-existing resources on the server. (BZ#2095708)

  • The OpenShift Container Platform 4.12 release updates the oc-mirror library, so that the library supports multi-arch platform images. This means that you can choose from a wider selection of architectures, such as arm64, when mirroring a platform release payload. (OCPBUGS-617)

Operator Lifecycle Manager (OLM)

  • Before the OpenShift Container Platform 4.12 release, the package-server-manager controller would not revert any changes made to a package-server cluster service version (CSV), because of an issue with the on-cluster function. These persistent changes might impact how an Operator starts in a cluster. For OpenShift Container Platform 4.12, the package-server-manager controller always rebuilds a package-server CSV to its original state, so that no modifications to the CSV persist after a cluster upgrade operation. The on-cluster function no longer controls the state of a package-server CSV. (OCPBUGS-867)

  • Previously, Operator Lifecycle Manager (OLM) would attempt to update namespaces to apply a label, even if the label was present on the namespace. Consequently, the update requests increased the workload in API and etcd services. With this update, OLM compares existing labels against the expected labels on a namespace before issuing an update. As a result, OLM no longer attempts to make unnecessary update requests on namespaces. (BZ#2105045)

  • Previously, Operator Lifecycle Manager (OLM) would prevent minor cluster upgrades that should not be blocked based on a miscalculation of the ClusterVersion custom resources’s spec.DesiredVersion field. With this update, OLM no longer prevents cluster upgrades when the upgrade should be supported. (BZ#2097557)

  • Previously, the reconciler would update a resource’s annotation without making a copy of the resource. This caused an error that would terminate the reconciler process. With this update, the reconciler no longer stops due the error. (BZ#2105045)

  • The package-server-manifest (PSM) is a controller that ensures that the correct package-server Cluster Service Version (CSV) is installed on a cluster. Previously, changes to the package-server CSV were not being reverted because of a logical error in the reconcile function in which an on-cluster object could influence the expected object. Users could modify the package-server CSV and the changes would not be reverted. Additionally, cluster upgrades would not update the YAML for the package-server CSV. With this update, the expected version of the CSV is now always built from scratch, which removes the ability for an on-cluster object to influence the expected values. As a result, the PSM now reverts any attempts to modify the package-server CSV, and cluster upgrades now deploy the expected package-server CSV. (OCPBUGS-858)

  • Previously, OLM would upgrade an Operator according to the Operator’s CRD status. A CRD lists component references in an order defined by the group/version/kind (GVK) identifier. Operators that share the same components might cause the GVK to change the component listings for an Operator, and this can cause the OLM to require more system resources to continuously update the status of a CRD. With this update, the Operator Lifecycle Manager (OLM) now upgrades an Operator according to the Operator’s component references. A change to the custom resource definition (CRD) status of an Operator does not impact the OLM Operator upgrade process.(OCPBUGS-3795)

Operator SDK

  • With this update, you can now set the security context for the registry pod by including the securityContext configuration field in the pod specification. This will apply the security context for all containers in the pod. The securityContext field also defines the pod’s privileges. (BZ#2091864)

File Integrity Operator

  • Previously, the File Integrity Operator deployed templates using the openshift-file-integrity namespace in the permissions for the Operator. When the Operator attempted to create objects in the namespace, it would fail due to permission issues. With this release, the deployment resources used by OLM are updated to use the correct namespace, fixing the permission issues so that users can install and use the operator in non-default namespaces. (BZ#2104897)

  • Previously, underlying dependencies of the File Integrity Operator changed how alerts and notifications were handled, and the Operator didn’t send metrics as a result. With this release the Operator ensures that the metrics endpoint is correct and reachable on startup. (BZ#2115821)

  • Previously, alerts issued by the File Integrity Operator did not set a namespace. This made it difficult to understand where the alert was coming from, or what component was responsible for issuing it. With this release, the Operator includes the namespace it was installed into in the alert, making it easier to narrow down what component needs attention. (BZ#2101393)

  • Previously, the File Integrity Operator did not properly handle modifying alerts during an upgrade. As a result, alerts did not include the namespace in which the Operator was installed. With this release, the Operator includes the namespace it was installed into in the alert, making it easier to narrow down what component needs attention. (BZ#2112394)

  • Previously, service account ownership for the File Integrity Operator regressed due to underlying OLM updates, and updates from 0.1.24 to 0.1.29 were broken. With this update, the Operator defaults to upgrading to 0.1.30. (BZ#2109153)

  • Previously, the File Integrity Operator daemon used the ClusterRoles parameter instead of the Roles parameter for a recent permission change. As a result, OLM could not update the Operator. With this release, the Operator daemon reverts to using the Roles parameter and updates from older versions to version 0.1.29 are successful. (BZ#2108475)

Compliance Operator

  • Previously, the Compliance Operator used an old version of the Operator SDK, which is a dependency for building Operators. This caused alerts about deprecated Kubernetes functionality used by the Operator SDK. With this release, the Compliance Operator is updated to version 0.1.55, which includes an updated version of the Operator SDK. (BZ#2098581)

  • Previously, applying automatic remediation for the rhcos4-high-master-sysctl-kernel-yama-ptrace-scope and rhcos4-sysctl-kernel-core-pattern rules resulted in subsequent failures of those rules in scan results, even though they were remediated. The issue is fixed in this release. (BZ#2094382)

  • Previously, the Compliance Operator hard coded notifications to the default namespace. As a result, notifications from the Operator would not appear if the Operator was installed in a different namespace. This issue is fixed in this release. (BZ#2060726)

  • Previously, the Compliance Operator failed to fetch API resources when parsing machine configurations without Ignition specifications. This caused the api-check-pods check to crash loop. With this release, the Compliance Operator is updated to gracefully handle machine configuration pools without Ignition specifications. (BZ#2117268)

  • Previously, the Compliance Operator held machine configurations in a stuck state because it could not determine the relationship between machine configurations and kubelet configurations. This was due to incorrect assumptions about machine configuration names. With this release, the Compliance Operator is able to determine if a kubelet configuration is a subset of a machine configuration. (BZ#2102511)

OpenShift API server

  • Previously, adding a member could remove previous members from a group. As a result, the user lost group privileges. With this release, the dependencies were bumped and users no longer lose group privledges. (OCPBUGS-533)

Red Hat Enterprise Linux CoreOS (RHCOS)

  • Previously, updating to Podman 4.0 prevented users from using custom images with toolbox containers on RHCOS. This fix updates the toolbox library code to account for the new Podman behavior, so users can now use custom images with toolbox on RHCOS as expected. (BZ#2048789)

  • Previously, the podman exec command did not work well with nested containers. Users encountered this issue when accessing a node using the oc debug command and then running a container with the toolbox command. Because of this, users were unable to reuse toolboxes on RHCOS. This fix updates the toolbox library code to account for this behavior, so users can now reuse toolboxes on RHCOS. (BZ#1915537)

  • With this update, running the toolbox command now checks for updates to the default image before launching the container. This improves security and provides users with the latest bug fixes. (BZ#2049591)

  • Previously, updating to Podman 4.0 prevented users from running the toolbox command on RHCOS. This fix updates the toolbox library code to account for the new Podman behavior, so users can now run toolbox on RHCOS as expected. (BZ#2093040)

  • Previously, custom SELinux policy modules were not properly supported by rpm-ostree, so they were not updated along with the rest of the system upon update. This would surface as failures in unrelated components. Pending SELinux userspace improvements landing in a future OpenShift Container Platform release, this update provides a workaround to RHCOS that will rebuild and reload the SELinux policy during boot as needed. (OCPBUGS-595)

Scalability and performance

  • The tuned profile has been modified to assign the same priority as ksoftirqd and rcuc to the newly introduced per-CPU kthreads (ktimers) added in a recent Red Hat Enterprise Linux (RHEL) kernel patch. For more information, see OCPBUGS-3475, BZ#2117780 and BZ#2122220.

  • Previously, restarts of the tuned service caused improper reset of the irqbalance configuration, leading to IRQ operation being served again on the isolated CPUs, therefore violating the isolation guarantees. With this fix, the irqbalance service configuration is properly preserved across tuned service restarts (explicit or caused by bugs), therefore preserving the CPU isolation guarantees with respect to IRQ serving. (OCPBUGS-585)

  • Previously, when the tuned daemon was restarted out of order as part of the cluster Node Tuning Operator, the CPU affinity of interrupt handlers was reset and the tuning was compromised. With this fix, the irqbalance plugin in tuned is disabled, and OpenShift Container Platform now relies on the logic and interaction between CRI-O and irqbalance.(BZ#2105123)

  • Previously, a low latency hook script executing for every new veth device took too long when the node was under load. The resultant accumulated delays during pod start events caused the rollout time for kube-apiserver to be slow and sometimes exceed the 5-minute rollout timeout. With this fix, the container start time should be shorter and within the 5-minute threshold. (BZ#2109965).

  • Previously, the oslat control thread was collocated with one of the test threads, which caused latency spikes in the measurements. With this fix, the oslat runner now reserves one CPU for the control thread, meaning the test uses one less CPU for running the busy threads. (BZ#2051443)

  • Latency measurement tools, also known as oslat, cyclictest, and hwlatdetect, now run on completely isolated CPUs without the helper process running in the background that might cause latency spikes, therefore providing more accurate latency measurements. (OCPBUGS-2618)

  • Previously, although the reference PolicyGenTemplate for group-du-sno-ranGen.yaml includes two StorageClass entries, the generated policy included only one. With this update, the generated policy now includes both policies. (BZ#2049306).

Storage

  • Previously, checks for generic ephemeral volumes failed. With this update, checks for expandable volumes now include generic ephemeral volumes. (BZ#2082773)

  • Previously, if more than one secret was present for vSphere, the vSphere CSI Operator randomly picked a secret and sometimes caused the Operator to restart. With this update, a warning appears when there is more than one secret on the vCenter CSI Operator. (BZ#2108473)

  • Previously, OpenShift Container Platform detached a volume when a Container Storage Interface (CSI) driver was not able to unmount the volume from a node. Detaching a volume without unmount is not allowed by CSI specifications and drivers could enter an undocumented state. With this update, CSI drivers are detached before unmounting only on unhealthy nodes preventing the undocumented state. (BZ#2049306)

  • Previously, there were missing annotations on the Manila CSI Driver Operator’s VolumeSnapshotClass. Consequently, the Manila CSI snapshotter could not locate secrets, and could not create snapshots with the default VolumeSnapshotClass. This update fixes the issue so that secret names and namespaces are included in the default VolumeSnapshotClass. As a result, users can now create snapshots in the Manila CSI Driver Operator using the default VolumeSnapshotClass. (BZ#2057637)

  • Users can now opt into using the experimental VHD feature on Azure File. To opt in, users must specify the fstype parameter in a storage class and enable it with --enable-vhd=true. If fstype is used and the feature is not set to true, the volumes will fail to provision.

    To opt out of using the VHD feature, remove the fstype parameter from your storage class. (BZ#2080449)

  • Previously, if more than one secret was present for vSphere, the vSphere CSI Operator randomly picked a secret and sometimes caused the Operator to restart. With this update, a warning appears when there is more than one secret on the vCenter CSI Operator. (BZ#2108473)

Web console (Developer perspective)

  • Previously, the users could not deselect a Git secret in add and edit forms. As a result, the resources had to be recreated. This fix resolves the issue by adding the option to choose No Secret in the select secret option list. As a result, the users can easily select, deselect, or detach any attached secrets. (BZ#2089221)

  • In OpenShift Container Platform 4.9, when it is minimal or no data in the Developer Perspective, most of the monitoring charts or graphs (CPU consumption, memory usage, and bandwidth) show a range of -1 to 1. However, none of these values can ever go below zero. This will be resolved in a future release. (BZ#1904106)

  • Before this update, users could not silence alerts in the Developer perspective in the OpenShift Container Platform web console when a user-defined Alertmanager service was deployed because the web console would forward the request to the platform Alertmanager service in the openshift-monitoring namespace. With this update, when you view the Developer perspective in the web console and try to silence an alert, the request is forwarded to the correct Alertmanager service. (OCPBUGS-1789)

  • Previously, there was a known issue in the Add Helm Chart Repositories form to extend the Developer Catalog of a project. The Quick Start guides shows that you can add the ProjectHelmChartRepository CR in the required namespace whereas it does not mention that to perform this you need permission from the kubeadmin. This issue was resolved with Quickstart mentioning the correct steps to create ProjectHelmChartRepository CR. (BZ#2057306)

Technology Preview features

Some features in this release are currently in Technology Preview. These experimental features are not intended for production use. Note the following scope of support on the Red Hat Customer Portal for these features:

In the following tables, features are marked with the following statuses:

  • Technology Preview

  • General Availability

  • Not Available

  • Deprecated

Networking Technology Preview features

Table 14. Networking Technology Preview tracker
Feature 4.10 4.11 4.12

PTP single NIC hardware configured as boundary clock

Technology Preview

General Availability

General Availability

PTP dual NIC hardware configured as boundary clock

Not Available

Technology Preview

Technology Preview

PTP events with boundary clock

Technology Preview

General Availability

General Availability

HTTP transport replaces AMQP for PTP and bare-metal events

Not Available

Not Available

General Availability

Pod-level bonding for secondary networks

General Availability

General Availability

General Availability

External DNS Operator

Technology Preview

General Availability

General Availability

AWS Load Balancer Operator

Not Available

Technology Preview

General Availability

Ingress Node Firewall Operator

Not Available

Not Available

Technology Preview

Advertise using BGP mode the MetalLB service from a subset of nodes, using a specific pool of IP addresses

Not Available

Technology Preview

General Availability

Advertise using L2 mode the MetalLB service from a subset of nodes, using a specific pool of IP addresses

Not Available

Technology Preview

Technology Preview

Multi-network policies for SR-IOV networks

Not Available

Not Available

Technology Preview

Updating the interface-specific safe sysctls list

Not Available

Not Available

Technology Preview

MT2892 Family [ConnectX-6 Dx] SR-IOV support

Not Available

Not Available

Technology Preview

MT2894 Family [ConnectX-6 Lx] SR-IOV support

Not Available

Not Available

Technology Preview

MT42822 BlueField-2 in ConnectX-6 NIC mode SR-IOV support

Not Available

Not Available

Technology Preview

Silicom STS Family SR-IOV support

Not Available

Not Available

Technology Preview

MT2892 Family [ConnectX-6 Dx] OvS Hardware Offload support

Not Available

Not Available

Technology Preview

MT2894 Family [ConnectX-6 Lx] OvS Hardware Offload support

Not Available

Not Available

Technology Preview

MT42822 BlueField-2 in ConnectX-6 NIC mode OvS Hardware Offload support

Not Available

Not Available

Technology Preview

Switching Bluefield-2 from DPU to NIC

Not available

Not available

Technology Preview

Storage Technology Preview features

Table 15. Storage Technology Preview tracker
Feature 4.10 4.11 4.12

Shared Resources CSI Driver and Build CSI Volumes in OpenShift Builds

Technology Preview

Technology Preview

Technology Preview

CSI volume expansion

Technology Preview

General Availability

General Availability

CSI Azure File Driver Operator

Technology Preview

General Availability

General Availability

CSI Google Filestore Driver Operator

Not Available

Not Available

Technology Preview

CSI automatic migration (Azure file, VMware vSphere)

Technology Preview

Technology Preview

Technology Preview

CSI automatic migration (Azure Disk, OpenStack Cinder)

Technology Preview

General Availability

General Availability

CSI automatic migration (AWS EBS, GCP disk)

Technology Preview

Technology Preview

General Availability

CSI inline ephemeral volumes

Technology Preview

Technology Preview

Technology Preview

CSI generic ephemeral volumes

Not Available

General Availability

General Availability

Shared Resource CSI Driver

Technology Preview

Technology Preview

Technology Preview

CSI Google Filestore Driver Operator

Not Available

Not Available

Technology Preview

Automatic device discovery and provisioning with Local Storage Operator

Technology Preview

Technology Preview

Technology Preview

NFS support for Azure File CSI Operator Driver

Not Available

Not Available

Generally Available

Installation Technology Preview features

Table 16. Installation Technology Preview tracker
Feature 4.10 4.11 4.12

Adding kernel modules to nodes with kvc

Technology Preview

Technology Preview

Technology Preview

IBM Cloud VPC clusters

Technology Preview

Technology Preview

General Availability

Selectable Cluster Inventory

Technology Preview

Technology Preview

Technology Preview

Multi-architecture compute machines

Not Available

Technology Preview

Technology Preview

Disconnected mirroring with the oc-mirror CLI plugin

Technology Preview

General Availability

General Availability

Mount shared entitlements in BuildConfigs in RHEL

Technology Preview

Technology Preview

Technology Preview

Agent-based OpenShift Container Platform Installer

Not Available

Not Available

General Availability

AWS Outposts platform

Not Available

Not Available

Technology Preview

Installing a cluster on Alibaba Cloud using installer-provisioned infrastructure

Technology Preview

Technology Preview

Technology Preview

Node Technology Preview features

Table 17. Nodes Technology Preview tracker
Feature 4.10 4.11 4.12

Non-preempting priority classes

Technology Preview

General Availability

General Availability

Node Health Check Operator

Technology Preview

General Availability

General Availability

Linux Control Group version 2 (cgroup v2)

Not Available

Not Available

Technology Preview

crun container runtime

Not Available

Not Available

Technology Preview

Multi-Architecture Technology Preview features

Table 18. Multi-Architecture Technology Preview tracker
Feature 4.10 4.11 4.12

kdump on x86_64 architecture

Technology Preview

General Availability

General Availability

kdump on arm64 architecture

Not Available

Technology Preview

Technology Preview

kdump on s390x architecture

Technology Preview

Technology Preview

Technology Preview

kdump on ppc64le architecture

Technology Preview

Technology Preview

Technology Preview

IBM Secure Execution on IBM Z and LinuxONE

Not Available

Not Available

Technology Preview

Serverless Technology Preview features

Table 19. Serverless Technology Preview tracker
Feature 4.10 4.11 4.12

Serverless functions

Technology Preview

Technology Preview

Technology Preview

Specialized hardware and driver enablement Technology Preview features

Table 20. Specialized hardware and driver enablement Technology Preview tracker
Feature 4.10 4.11 4.12

Driver Toolkit

Technology Preview

Technology Preview

General Availability

Special Resource Operator (SRO)

Technology Preview

Technology Preview

Not Available

Hub and spoke cluster support

Not Available

Not Available

Technology Preview

Web console Technology Preview features

Table 21. Web console Technology Preview tracker
Feature 4.10 4.11 4.12

Dynamic Plugins

Technology Preview

Technology Preview

General Availability

Scalability and performance Technology Preview features

Table 22. Scalability and performance Technology Preview tracker
Feature 4.10 4.11 4.12

Hyperthreading-aware CPU manager policy

Technology Preview

Technology Preview

Technology Preview

Node Observability Operator

Not Available

Technology Preview

Technology Preview

factory-precaching-cli tool

Not Available

Not Available

Technology Preview

Adding worker nodes to Single-node OpenShift clusters with GitOps ZTP

Not Available

Not Available

Technology Preview

Topology Aware Lifecycle Manager (TALM)

Technology Preview

Technology Preview

General Availability

Mount namespace encapsulation

Not Available

Not Available

Technology Preview

NUMA-aware scheduling with NUMA Resources Operator

Technology Preview

Technology Preview

General Availability

Operator Technology Preview features

Table 23. Operator Technology Preview tracker
Feature 4.10 4.11 4.12

Hybrid Helm Operator

Technology Preview

Technology Preview

Technology Preview

Java-based Operator

Not Available

Technology Preview

Technology Preview

Node Observability Operator

Not Available

Not Available

Technology Preview

Network Observability Operator

Supported

Supported

General Availability

Platform Operators

Not Available

Not Available

Technology Preview

RukPak

Not Available

Not Available

Technology Preview

cert-manager Operator

Technology Preview

Technology Preview

General Availability

Monitoring Technology Preview features

Table 24. Monitoring Technology Preview tracker
Feature 4.10 4.11 4.12

Alert routing for user-defined projects monitoring

Technology Preview

General Availability

General Availability

Alerting rules based on platform monitoring metrics

Not Available

Technology Preview

Technology Preview

Red Hat OpenStack Platform (RHOSP) Technology Preview features

Table 25. RHOSP Technology Preview tracker
Feature 4.10 4.11 4.12

Support for RHOSP DCN

Technology Preview

Technology Preview

Technology Preview

Support for external cloud providers for clusters on RHOSP

Technology Preview

Technology Preview

General Availability

OVS hardware offloading for clusters on RHOSP

Technology Preview

General Availability

General Availability

Architecture Technology Preview features

Table 26. Architecture Technology Preview tracker
Feature 4.10 4.11 4.12

Hosted control planes for OpenShift Container Platform on bare metal

Not Available

Not Available

Technology Preview

Hosted control planes for OpenShift Container Platform on Amazon Web Services (AWS)

Not Available

Technology Preview

Technology Preview

Machine management Technology Preview features

Table 27. Machine management Technology Preview tracker
Feature 4.10 4.11 4.12

Managing machines with the Cluster API

Not Available

Technology Preview

Technology Preview

Cron job time zones

Not Available

Not Available

Technology Preview

Cloud controller manager for Alibaba Cloud

Technology Preview

Technology Preview

Technology Preview

Cloud controller manager for Amazon Web Services

Technology Preview

Technology Preview

Technology Preview

Cloud controller manager for Google Cloud Platform

Technology Preview

Technology Preview

Technology Preview

Cloud controller manager for IBM Cloud

Technology Preview

Technology Preview

General Availability

Cloud controller manager for Microsoft Azure

Technology Preview

Technology Preview

Technology Preview

Cloud controller manager for Red Hat OpenStack Platform (RHOSP)

Technology Preview

Technology Preview

General Availability

Cloud controller manager for VMware vSphere

Technology Preview

Technology Preview

Technology Preview

Custom Metrics Autoscaler Operator

Not Available

Technology Preview

Technology Preview

Authentication and authorization Technology Preview features

Table 28. Authentication and authorization Technology Preview tracker
Feature 4.10 4.11 4.12

Pod security admission restricted enforcement

Not Available

Not Available

Technology Preview

Known issues

  • In OpenShift Container Platform 4.1, anonymous users could access discovery endpoints. Later releases revoked this access to reduce the possible attack surface for security exploits because some discovery endpoints are forwarded to aggregated API servers. However, unauthenticated access is preserved in upgraded clusters so that existing use cases are not broken.

    If you are a cluster administrator for a cluster that has been upgraded from OpenShift Container Platform 4.1 to 4.12, you can either revoke or continue to allow unauthenticated access. Unless there is a specific need for unauthenticated access, you should revoke it. If you do continue to allow unauthenticated access, be aware of the increased risks.

    If you have applications that rely on unauthenticated access, they might receive HTTP 403 errors if you revoke unauthenticated access.

    Use the following script to revoke unauthenticated access to discovery endpoints:

    ## Snippet to remove unauthenticated group from all the cluster role bindings
    $ for clusterrolebinding in cluster-status-binding discovery system:basic-user system:discovery system:openshift:discovery ;
    do
    ### Find the index of unauthenticated group in list of subjects
    index=$(oc get clusterrolebinding ${clusterrolebinding} -o json | jq 'select(.subjects!=null) | .subjects | map(.name=="system:unauthenticated") | index(true)');
    ### Remove the element at index from subjects array
    oc patch clusterrolebinding ${clusterrolebinding} --type=json --patch "[{'op': 'remove','path': '/subjects/$index'}]";
    done

    This script removes unauthenticated subjects from the following cluster role bindings:

    • cluster-status-binding

    • discovery

    • system:basic-user

    • system:discovery

    • system:openshift:discovery

  • Intermittently, an IBM Cloud VPC cluster might fail to install because some worker machines do not start. Rather, these worker machines remain in the Provisioned phase.

    There is a workaround for this issue. From the host where you performed the initial installation, delete the failed machines and run the installation program again.

    1. Verify that the status of the internal application load balancer (ALB) for the master API server is active.

      1. Identify the cluster’s infrastructure ID by running the following command:

        $ oc get infrastructure/cluster -ojson | jq -r '.status.infrastructureName'
      2. Log into the IBM Cloud account for your cluster and target the correct region for your cluster.

      3. Verify that the internal ALB status is active by running the following command:

        $ ibmcloud is lb <cluster_ID>-kubernetes-api-private  --output json | jq -r '.provisioning_status'
    2. Identify the machines that are in the Provisioned phase by running the following command:

      $ oc get machine -n openshift-machine-api
      Example output
      NAME                                    PHASE         TYPE       REGION    ZONE        AGE
      example-public-1-x4gpn-master-0         Running       bx2-4x16   us-east   us-east-1   23h
      example-public-1-x4gpn-master-1         Running       bx2-4x16   us-east   us-east-2   23h
      example-public-1-x4gpn-master-2         Running       bx2-4x16   us-east   us-east-3   23h
      example-public-1-x4gpn-worker-1-xqzzm   Running       bx2-4x16   us-east   us-east-1   22h
      example-public-1-x4gpn-worker-2-vg9w6   Provisioned   bx2-4x16   us-east   us-east-2   22h
      example-public-1-x4gpn-worker-3-2f7zd   Provisioned   bx2-4x16   us-east   us-east-3   22h
    3. Delete each failed machine by running the following command:

      $ oc delete machine <name_of_machine> -n openshift-machine-api
    4. Wait for the deleted worker machines to be replaced, which can take up to 10 minutes.

    5. Verify that the new worker machines are in the Running phase by running the following command:

      $ oc get machine -n openshift-machine-api
      Example output
      NAME                                    PHASE     TYPE       REGION    ZONE        AGE
      example-public-1-x4gpn-master-0         Running   bx2-4x16   us-east   us-east-1   23h
      example-public-1-x4gpn-master-1         Running   bx2-4x16   us-east   us-east-2   23h
      example-public-1-x4gpn-master-2         Running   bx2-4x16   us-east   us-east-3   23h
      example-public-1-x4gpn-worker-1-xqzzm   Running   bx2-4x16   us-east   us-east-1   23h
      example-public-1-x4gpn-worker-2-mnlsz   Running   bx2-4x16   us-east   us-east-2   8m2s
      example-public-1-x4gpn-worker-3-7nz4q   Running   bx2-4x16   us-east   us-east-3   7m24s
    6. Complete the installation by running the following command. Running the installation program again ensures that the cluster’s kubeconfig is initialized properly:

      $ ./openshift-install wait-for install-complete
  • The oc annotate command does not work for LDAP group names that contain an equal sign (=), because the command uses the equal sign as a delimiter between the annotation name and value. As a workaround, use oc patch or oc edit to add the annotation. (BZ#1917280)

  • Due to the inclusion of old images in some image indexes, running oc adm catalog mirror and oc image mirror might result in the following error: error: unable to retrieve source image. As a temporary workaround, you can use the --skip-missing option to bypass the error and continue downloading the image index. For more information, see Service Mesh Operator mirroring failed.

  • When using the egress IP address feature in OpenShift Container Platform on RHOSP, you can assign a floating IP address to a reservation port to have a predictable SNAT address for egress traffic. The floating IP address association must be created by the same user that installed the OpenShift Container Platform cluster. Otherwise any delete or move operation for the egress IP address hangs indefinitely because of insufficient privileges. When this issue occurs, a user with sufficient privileges must manually unset the floating IP address association to resolve the issue. (OCPBUGS-4902)

  • There is a known issue with Nutanix installation where the installation fails if you use 4096-bit certificates with Prism Central 2022.x. Instead, use 2048-bit certificates. (KCS)

  • Deleting the bidirectional forwarding detection (BFD) profile and removing the bfdProfile added to the border gateway protocol (BGP) peer resource does not disable the BFD. Instead, the BGP peer starts using the default BFD profile. To disable BFD from a BGP peer resource, delete the BGP peer configuration and recreate it without a BFD profile. (BZ#2050824)

  • Due to an unresolved metadata API issue, you cannot install clusters that use bare-metal workers on RHOSP 16.1. Clusters on RHOSP 16.2 are not impacted by this issue. (BZ#2033953)

  • The loadBalancerSourceRanges attribute is not supported, and is therefore ignored, in load-balancer type services in clusters that run on RHOSP and use the OVN Octavia provider. There is no workaround for this issue. (OCPBUGS-2789)

  • After a catalog source update, it takes time for OLM to update the subscription status. This can mean that the status of the subscription policy may continue to show as compliant when Topology Aware Lifecycle Manager (TALM) decides whether remediation is needed. As a result the operator specified in the subscription policy does not get upgraded. As a workaround, include a status field in the spec section of the catalog source policy as follows:

    metadata:
      name: redhat-operators-disconnected
    spec:
      displayName: disconnected-redhat-operators
      image: registry.example.com:5000/disconnected-redhat-operators/disconnected-redhat-operator-index:v4.11
    status:
      connectionState:
        lastObservedState: READY

    This mitigates the delay for OLM to pull the new index image and get the pod ready, reducing the time between completion of catalog source policy remediation and the update of the subscription status. If the issue persists and the subscription policy status update is still late you can apply another ClusterGroupUpdate CR with the same subscription policy, or an identical ClusterGroupUpdate CR with a different name. (OCPBUGS-2813)

  • TALM skips remediating a policy if all selected clusters are compliant when the ClusterGroupUpdate CR is started. The update of operators with a modified catalog source policy and a subscription policy in the same ClusterGroupUpdate CR does not complete. The subscription policy is skipped as it is still compliant until the catalog source change is enforced. As a workaround, add the following change to one CR in the common-subscription policy, for example:

    metadata.annotations.upgrade: "1"

    This makes the policy non-compliant prior to the start of the ClusterGroupUpdate CR. (OCPBUGS-2812)

  • On a single-node OpenShift instance, rebooting without draining the node to remove all the running pods can cause issues with workload container recovery. After the reboot, the workload restarts before all the device plugins are ready, resulting in resources not being available or the workload running on the wrong NUMA node. The workaround is to restart the workload pods when all the device plugins have re-registered themselves during the reboot recovery procedure. (OCPBUGS-2180)

  • The default dataset_comparison is currently ieee1588. The recommended dataset_comparison is G.8275.x. It is planned to be fixed in a future version of OpenShift Container Platform. In the short term, you can manually update the ptp configuration to include the recommended dataset_comparison. (OCPBUGS-2336)

  • The default step_threshold is 0.0. The recommended step_threshold is 2.0. It is planned to be fixed in a future version of OpenShift Container Platform. In the short term, you can manually update the ptp configuration to include the recommended step_threshold. (OCPBUGS-3005)

  • The BMCEventSubscription CR fails to create a Redfish subscription for a spoke cluster in an ACM-deployed multi-cluster environment, where the metal3 service is only running on a hub cluster. The workaround is to create the subscription by calling the Redfish API directly, for example, by running the following command:

    curl -X POST -i --insecure -u "<BMC_username>:<BMC_password>" https://<BMC_IP>/redfish/v1/EventService/Subscriptions \
        -H 'Content-Type: application/json' \
        --data-raw '{
        "Protocol": "Redfish",
        "Context": "any string is valid",
        "Destination": "https://hw-event-proxy-openshift-bare-metal-events.apps.example.com/webhook",
        "EventTypes": ["Alert"]
        }'

    You should receive a 201 Created response and a header with Location: /redfish/v1/EventService/Subscriptions/<sub_id> that indicates that the Redfish events subscription is successfully created. (OCPBUGSM-43707)

  • When using the GitOps ZTP pipeline to install a single-node OpenShift cluster in a disconnected environment, there should be two CatalogSource CRs applied in the cluster. One of the CatalogSource CRs gets deleted following multiple node reboots. As a workaround, you can change the default names, such as certified-operators and redhat-operators, of the catalog sources. (OCPBUGSM-46245)

  • If an invalid subscription channel is specified in the subscription policy that is used to perform a cluster upgrade, the Topology Aware Lifecycle Manager indicates a successful upgrade right after the policy is enforced because the Subscription state remains AtLatestKnown. (OCPBUGSM-43618)

  • The SiteConfig disk partition definition fails when applied to multiple nodes in a cluster. When a SiteConfig CR is used to provision a compact cluster, creating a valid diskPartition config on multiple nodes fails with a Kustomize plugin error. (OCPBUGSM-44403)

  • If secure boot is currently disabled and you try to enable it using ZTP, the cluster installation does not start. When secure boot is enabled through ZTP, the boot options are configured before the virtual CD is attached. Therefore, the first boot from the existing hard disk has the secure boot turned on. The cluster installation gets stuck because the system never boots from the CD. (OCPBUGSM-45085)

  • Using Red Hat Advanced Cluster Management (RHACM), spoke cluster deployments on Dell PowerEdge R640 servers are blocked when the virtual media does not disconnect the ISO in the iDRAC console after writing the image to the disk. As a workaround, disconnect the ISO manually through the Virtual Media tab in the iDRAC console. (OCPBUGSM-45884)

  • Low-latency applications that rely on high-resolution timers to wake up their threads might experience higher wake up latencies than expected. Although the expected wake up latency is under 20us, latencies exceeding this can occasionally be seen when running the cyclictest tool for long durations (24 hours or more). Testing has shown that wake up latencies are under 20us for over 99.999999% of the samples. (RHELPLAN-138733)

  • A Chapman Beach NIC from Intel must be installed in a bifurcated PCIe slot to ensure that both ports are visible. A limitation also exists in the current devlink tooling in RHEL 8.6 which prevents the configuration of 2 ports in the bifurcated PCIe slot. (RHELPLAN-142458)

  • Disabling an SR-IOV VF when a port goes down can cause a 3-4 second delay with Intel NICs. (RHELPLAN-126931)

  • When using Intel NICs, IPV6 traffic stops when an SR-IOV VF is assigned an IPV6 address. (RHELPLAN-137741)

  • When using VLAN strip offloading, the offload flag (ol_flag) is not consistently set correctly with the iavf driver. (RHELPLAN-141240)

  • A deadlock can occur if an allocation fails during a configuration change with the ice driver. (RHELPLAN-130855)

  • SR-IOV VFs send GARP packets with the wrong MAC address when using Intel NICs. (RHELPLAN-140971)

  • When using the GitOps ZTP method of managing clusters and deleting a cluster which has not completed installation, the cleanup of the cluster namespace on the hub cluster might hang indefinitely. To complete the namespace deletion, remove the baremetalhost.metal3.io finalizer from two CRs in the cluster namespace:

    1. Remove the finalizer from the secret that is pointed to by the BareMetalHost CR .spec.bmc.credentialsName.

    2. Remove the finalizer from the BareMetalHost CR. When these finalizers are removed the namespace termination completes within a few seconds. (OCPBUGS-3029)

  • The addition of a new feature in OCP 4.12 that enables UDP GRO also causes all veth devices to have one RX queue per available CPU (previously each veth had one queue). Those queues are dynamically configured by OVN and there is no synchronization between latency tuning and this queue creation. The latency tuning logic monitors the veth NIC creation events and starts configuring the RPS queue cpu masks before all the queues are properly created. This means that some of the RPS queue masks are not configured. Since not all NIC queues are configured properly there is a chance of latency spikes in a real-time application that uses timing-sensitive cpus for communicating with services in other containers. Applications that do not use kernel networking stack are not affected. (OCPBUGS-4194)

  • Platform Operator and RukPak known issues:

    • Deleting a platform Operator results in a cascading deletion of the underlying resources. This cascading deletion logic can only delete resources that are defined in the Operator Lifecycle Manager-based (OLM) Operator’s bundle format. In the case that a platform Operator creates resources that are defined outside of that bundle format, then the platform Operator is responsible for handling this cleanup interaction. This behavior can be observed when installing the cert-manager Operator as a platform Operator, and then removing it. The expected behavior is that a namespace is left behind that the cert-manager Operator created.

    • The platform Operators manager does not have any logic that compares the current and desired state of the cluster-scoped BundleDeployment resource it is managing. This leaves the possibility for a user who has sufficient role-based access control (RBAC) to manually modify that underlying BundleDeployment resource and can lead to situations where users can escalate their permissions to the cluster-admin role. By default, you should limit access to this resource to a small number of users that explicitly require access. The only supported client for the BundleDeployment resource during this Technology Preview release is the platform Operators manager component.

    • OLM’s Marketplace component is an optional cluster capability that can be disabled. This has implications during the Technology Preview release because platform Operators are currently only sourced from the redhat-operators catalog source that is managed by the Marketplace component. As a workaround, a cluster administrator can create this catalog source manually.

    • The RukPak provisioner implementations do not have the ability to inspect the health or state of the resources that they are managing. This has implications for surfacing the generated BundleDeployment resource state to the PlatformOperator resource that owns it. If a registry+v1 bundle contains manifests that can be successfully applied to the cluster, but will fail at runtime, such as a Deployment object referencing a non-existent image, the result is a successful status being reflected in individual PlatformOperator and BundleDeployment resources.

    • Cluster administrators configuring PlatformOperator resources before cluster creation cannot easily determine the desired package name without leveraging an existing cluster or relying on documented examples. There is currently no validation logic that ensures an individually configured PlatformOperator resource will be able to successfully roll out to the cluster.

  • When using the Technology Preview OCI feature with the oc-mirror CLI plugin, the mirrored catalog embeds all of the Operator bundles, instead of filtering only on those specified in the image set configuration file. (OCPBUGS-5085)

  • There is currently a known issue when you run the Agent-based OpenShift Container Platform Installer to generate an ISO image from a directory where the previous release was used for ISO image generation. An error message is displayed with the release version not matching. As a workaround, create and use a new directory. (OCPBUGS#5159)

  • The defined capabilities in the install-config.yaml file are not applied in the Agent-based OpenShift Container Platform installation. Currently, there is no workaround. (OCPBUGS#5129)

  • Fully populated load balancers on RHOSP that are created with the OVN driver can contain pools that are stuck in a pending creation status. This issue can cause problems for clusters that are deployed on RHOSP. To resolve the issue, update your RHOSP packages. (BZ#2042976)

  • Bulk load-balancer member updates on RHOSP can return a 500 code in response to PUT requests. This issue can cause problems for clusters that are deployed on RHOSP. To resolve the issue, update your RHOSP packages. (BZ#2100135)

  • Clusters that use external cloud providers can fail to retrieve updated credentials after rotation. The following platforms are affected:

    • Alibaba Cloud

    • IBM Cloud VPC

    • IBM Power

    • OpenShift Virtualization

    • RHOSP

    As a workaround, restart openshift-cloud-controller-manager pods by running the following command:

    $ oc delete pods --all -n openshift-cloud-controller-manager
  • There is a known issue when cloud-provider-openstack tries to create health monitors on OVN load balancers by using the API to create fully populated load balancers. These health monitors become stuck in a PENDING_CREATE status. After their deletion, associated load balancers are are stuck in a PENDING_UPDATE status. There is no workaround. (BZ#2143732)

  • Due to a known issue, to use stateful IPv6 networks with cluster that run on RHOSP, you must include ip=dhcp,dhcpv6 in the kernel arguments of worker nodes. (OCPBUGS-2104)

  • It is not possible to create a macvlan on the physical function (PF) when a virtual function (VF) already exists. This issue affects the Intel E810 NIC. (BZ#2120585)

  • There is currently a known issue when manually configuring IPv6 addresses and routes on an IPv4 OpenShift Container Platform cluster. When converting to a dual-stack cluster, newly created pods remain in the ContainerCreating status. Currently, there is no workaround. This issue is planned to be addressed in a future OpenShift Container Platform release. (OCPBUGS-4411)

  • When an OVN cluster installed on IBM Public Cloud has more than 60 worker nodes, simultaneously creating 2000 or more services and route objects can cause pods created at the same time to remain in the ContainerCreating status. If this problem occurs, entering the oc describe pod <podname> command shows events with the following warning: FailedCreatePodSandBox…​failed to configure pod interface: timed out waiting for OVS port binding (ovn-installed). There is currently no workaround for this issue. (OCPBUGS-3470)

  • When a control plane machine is replaced on a cluster that uses the OVN-Kubernetes network provider, the pods related to OVN-Kubernetes might not start on the replacement machine. When this occurs, the lack of networking on the new machine prevents etcd from allowing it to replace the old machine. As a result, the cluster is stuck in this state and might become degraded. This behavior can occur when the control plane is replaced manually or by the control plane machine set.

    There is currently no workaround to resolve this issue if encountered. To avoid this issue, disable the control plane machine set and do not replace control plane machines manually if your cluster uses the OVN-Kubernetes network provider. (OCPBUGS-5306)

  • If a cluster that was deployed through ZTP has policies that do not become compliant, and no ClusterGroupUpdates object is present, you must restart the TALM pods. Restarting TALM creates the proper ClusterGroupUpdates object, which enforces the policy compliance. (OCPBUGS-4065)

  • Currently, a certificate compliance issue, specifically outputted as x509: certificate is not standards compliant, exists when you run the installation program on macOS for the purposes of installing an OpenShift Container Platform cluster on VMware vSphere. This issue relates to a known issue with the golang compiler in that the compiler does not recognize newly supported macOS certificate standards. No workaround exists for this issue. (OSDOCS-5694)

  • Currently, when using a persistent volume (PV) that contains a very large number of files, the pod might not start or can take an excessive amount of time to start. For more information, see this knowledge base article. (BZ1987112)

  • Creating pods with Azure File NFS volumes that are scheduled to the control plane node causes the mount to be denied. (OCPBUGS-18581)

    To work around this issue: If your control plane nodes are schedulable, and the pods can run on worker nodes, use nodeSelector or Affinity to schedule the pod in worker nodes.

  • When installing an OpenShift Container Platform cluster with static IP addressing and Tang encryption, nodes start without network settings. This condition prevents nodes from accessing the Tang server, causing installation to fail. To address this condition, you must set the network settings for each node as ip installer arguments.

    1. For installer-provisioned infrastructure, before installation provide the network settings as ip installer arguments for each node by executing the following steps.

      1. Create the manifests.

      2. For each node, modify the BareMetalHost custom resource with annotations to include the network settings. For example:

        $ cd ~/clusterconfigs/openshift
        $ vim openshift-worker-0.yaml
        apiVersion: metal3.io/v1alpha1
        kind: BareMetalHost
        metadata:
          annotations:
            bmac.agent-install.openshift.io/installer-args: '["--append-karg", "ip=<static_ip>::<gateway>:<netmask>:<hostname_1>:<interface>:none", "--save-partindex", "1", "-n"]'     (1) (2) (3) (4) (5)
            inspect.metal3.io: disabled
            bmac.agent-install.openshift.io/hostname: <fqdn> (6)
            bmac.agent-install.openshift.io/role: <role> (7)
          generation: 1
          name: openshift-worker-0
          namespace: mynamespace
        spec:
          automatedCleaningMode: disabled
          bmc:
            address: idrac-virtualmedia://<bmc_ip>/redfish/v1/Systems/System.Embedded.1 (8)
            credentialsName: bmc-secret-openshift-worker-0
            disableCertificateVerification: true
          bootMACAddress: 94:6D:AE:AB:EE:E8
          bootMode: "UEFI"
          rootDeviceHints:
            deviceName: /dev/sda

        For the ip settings, replace:

        1 <static_ip> with the static IP address for the node, for example, 192.168.1.100
        2 <gateway> with the IP address of your network’s gateway, for example, 192.168.1.1
        3 <netmask> with the network mask, for example, 255.255.255.0
        4 <hostname_1> with the node’s hostname, for example, node1.example.com
        5 <interface> with the name of the network interface, for example, eth0
        6 <fqdn> with the fully qualified domain name of the node
        7 <role> with worker or master to reflect the node’s role
        8 <bmc_ip> with with the BMC IP address and the protocol and path of the BMC, as needed.
      3. Save the file to the clusterconfigs/openshift directory.

      4. Create the cluster.

    2. When installing with the Assisted Installer, before installation modify each node’s installer arguments using the API to append the network settings as ip installer arguments. For example:

      $ curl https://api.openshift.com/api/assisted-install/v2/infra-envs/${infra_env_id}/hosts/${host_id}/installer-args \
      -X PATCH \
      -H "Authorization: Bearer ${API_TOKEN}" \
      -H "Content-Type: application/json" \
      -d '
          {
            "args": [
              "--append-karg",
              "ip=<static_ip>::<gateway>:<netmask>:<hostname_1>:<interface>:none",     (1) (2) (3) (4) (5)
              "--save-partindex",
              "1",
              "-n"
            ]
          }
        ' | jq

      For the previous network settings, replace:

      1 <static_ip> with the static IP address for the node, for example, 192.168.1.100
      2 <gateway> with the IP address of your network’s gateway, for example, 192.168.1.1
      3 <netmask> with the network mask, for example, 255.255.255.0
      4 <hostname_1> with the node’s hostname, for example, node1.example.com
      5 <interface> with the name of the network interface, for example, eth0.

Contact Red Hat Support for additional details and assistance.

Asynchronous errata updates

Security, bug fix, and enhancement updates for OpenShift Container Platform 4.12 are released as asynchronous errata through the Red Hat Network. All OpenShift Container Platform 4.12 errata is available on the Red Hat Customer Portal. See the OpenShift Container Platform Life Cycle for more information about asynchronous errata.

Red Hat Customer Portal users can enable errata notifications in the account settings for Red Hat Subscription Management (RHSM). When errata notifications are enabled, users are notified through email whenever new errata relevant to their registered systems are released.

Red Hat Customer Portal user accounts must have systems registered and consuming OpenShift Container Platform entitlements for OpenShift Container Platform errata notification emails to generate.

This section will continue to be updated over time to provide notes on enhancements and bug fixes for future asynchronous errata releases of OpenShift Container Platform 4.12. Versioned asynchronous releases, for example with the form OpenShift Container Platform 4.12.z, will be detailed in subsections. In addition, releases in which the errata text cannot fit in the space provided by the advisory will be detailed in subsections that follow.

For any OpenShift Container Platform release, always review the instructions on updating your cluster properly.

RHSA-2022:7399 - OpenShift Container Platform 4.12.0 image release, bug fix, and security update advisory

Issued: 2023-01-17

OpenShift Container Platform release 4.12.0, which includes security updates, is now available. The list of bug fixes that are included in the update is documented in the RHSA-2022:7399 advisory. The RPM packages that are included in the update are provided by the RHSA-2022:7398 advisory.

Space precluded documenting all of the container images for this release in the advisory. See the following article for notes on the container images in this release:

You can view the container images in this release by running the following command:

$ oc adm release info 4.12.0 --pullspecs

Features

General availability of pod-level bonding for secondary networks

With this update, Using pod-level bonding is now generally available.

RHSA-2023:0449 - OpenShift Container Platform 4.12.1 bug fix and security update

Issued: 2023-01-30

OpenShift Container Platform release 4.12.1, which includes security updates, is now available. The list of bug fixes that are included in the update is documented in the RHSA-2023:0449 advisory. The RPM packages that are included in the update are provided by the RHBA-2023:0448 advisory.

You can view the container images in this release by running the following command:

$ oc adm release info 4.12.1 --pullspecs

Bug fixes

  • Previously, due to a wrong check in the OpenStack cloud provider, the load balancers were populated with External IP addresses when all of the Octavia load balancers were created. This increased the time for the load balancers to be handled. With this update, load balancers are still created sequentially and External IP addresses are populated one-by-one. (OCPBUGS-5403)

  • Previously, the cluster-image-registry-operator would default to using persistent volume claim (PVC) when it failed to reach Swift. With this update, failure to connect to Red Hat OpenStack Platform (RHOSP) API or other incidental failures cause the cluster-image-registry-operator to retry the probe. During the retry, the default to PVC only occurs if the RHOSP catalog is correctly found, and it does not contain object storage; or alternatively, if RHOSP catalog is there and the current user does not have permission to list containers. (OCPBUGS-5154)

Updating

To update an existing OpenShift Container Platform 4.12 cluster to this latest release, see Updating a cluster using the CLI.

RHSA-2023:0569 - OpenShift Container Platform 4.12.2 bug fix and security update

Issued: 2023-02-07

OpenShift Container Platform release 4.12.2, which includes security updates, is now available. The list of bug fixes that are included in the update is documented in the RHSA-2023:0569 advisory. The RPM packages that are included in the update are provided by the RHBA-2023:0568 advisory.

You can view the container images in this release by running the following command:

$ oc adm release info 4.12.2 --pullspecs

Updating

To update an existing OpenShift Container Platform 4.12 cluster to this latest release, see Updating a cluster using the CLI.

RHSA-2023:0728 - OpenShift Container Platform 4.12.3 bug fix and security update

Issued: 2023-02-16

OpenShift Container Platform release 4.12.3, which includes security updates, is now available. The list of bug fixes that are included in the update is documented in the RHSA-2023:0728 advisory. The RPM packages that are included in the update are provided by the RHSA-2023:0727 advisory.

You can view the container images in this release by running the following command:

$ oc adm release info 4.12.3 --pullspecs

Bug fixes

  • Previously, when a control plane machine was replaced on a cluster that used the OVN-Kubernetes network provider, the pods related to OVN-Kubernetes sometimes did not start on the replacement machine, and prevented etcd from allowing it to replace the old machine. With this update, pods related to OVN-Kubernetes start in the replacement machine as expected.(OCPBUGS-6494)

Updating

To update an existing OpenShift Container Platform 4.12 cluster to this latest release, see Updating a cluster using the CLI.

RHSA-2023:0769 - OpenShift Container Platform 4.12.4 bug fix and security update

Issued: 2023-02-20

OpenShift Container Platform release 4.12.4, which includes security updates, is now available. The list of bug fixes that are included in the update is documented in the RHSA-2023:0769 advisory. The RPM packages that are included in the update are provided by the RHBA-2023:0768 advisory.

You can view the container images in this release by running the following command:

$ oc adm release info 4.12.4 --pullspecs

Updating

To update an existing OpenShift Container Platform 4.12 cluster to this latest release, see Updating a cluster using the CLI.

RHSA-2023:0890 - OpenShift Container Platform 4.12.5 bug fix and security update

Issued: 2023-02-28

OpenShift Container Platform release 4.12.5, which includes security updates, is now available. The list of bug fixes that are included in the update is documented in the RHSA-2023:0890 advisory. The RPM packages that are included in the update are provided by the RHBA-2023:0889 advisory.

You can view the container images in this release by running the following command:

$ oc adm release info 4.12.5 --pullspecs

Bug fixes

  • Previously, in the repositories list, you could see the PipelineRuns only when the status was Succeeded or Failed but not when the status was Running. With this fix, when the PipelineRuns is triggered, you can see it in the repositories list with the status Running. (OCPBUGS-6816)

  • Previously, when creating a Secret, the Start Pipeline model created an invalid JSON value, As a result, the Secret was unusable and the PipelineRun could fail. With this fix, the Start Pipeline model creates a valid JSON value for the Secret. Now, you can create valid Secrets while starting a Pipeline. (OCPBUGS-6671)

  • Previously, when a BindableKinds resource did not have a status, the web console crashed, fetching and showing the same data in a loop. With this fix, you can set the BindableKinds resource status array to [], expecting it to exist without a status field. As a result, the web browser or the application does not crash. (OCPBUGS-4072)

  • Previously, the associated webhook <kn-service-name>-github-webhook-secret did not delete when deleting a Knative (kn) service from OpenShift Container Platform. With this fix, all the associated webhook secrets are deleted. Now, you can create a Knative (kn) service with the same name as the deleted one. (OCPBUGS-7437)

Updating

To update an existing OpenShift Container Platform 4.12 cluster to this latest release, see Updating a cluster using the CLI.

RHSA-2023:1034 - OpenShift Container Platform 4.12.6 bug fix and security update

Issued: 2023-03-07

OpenShift Container Platform release 4.12.6, which includes security updates, is now available. The list of bug fixes that are included in the update is documented in the RHBA-2023:1034 advisory. The RPM packages that are included in the update are provided by the RHSA-2023:1033 advisory.

You can view the container images in this release by running the following command:

$ oc adm release info 4.12.6 --pullspecs

Updating

To update an existing OpenShift Container Platform 4.12 cluster to this latest release, see Updating a cluster using the CLI.

RHBA-2023:1163 - OpenShift Container Platform 4.12.7 bug fix update

Issued: 2023-03-13

OpenShift Container Platform release 4.12.7 is now available. The list of bug fixes that are included in the update is documented in the RHBA-2023:1163 advisory. The RPM packages that are included in the update are provided by the RHBA-2023:1162 advisory.

You can view the container images in this release by running the following command:

$ oc adm release info 4.12.7 --pullspecs

Updating

To update an existing OpenShift Container Platform 4.12 cluster to this latest release, see Updating a cluster using the CLI.

RHBA-2023:1269 - OpenShift Container Platform 4.12.8 bug fix and security update

Issued: 2023-03-21

OpenShift Container Platform release 4.12.8, which includes security updates, is now available. The list of bug fixes that are included in the update is documented in the RHBA-2023:1269 advisory. The RPM packages that are included in the update are provided by the RHSA-2023:1268 advisory.

You can view the container images in this release by running the following command:

$ oc adm release info 4.12.8 --pullspecs

Updating

To update an existing OpenShift Container Platform 4.12 cluster to this latest release, see Updating a cluster using the CLI.

RHSA-2023:1409 - OpenShift Container Platform 4.12.9 bug fix and security update

Issued: 2023-03-27

OpenShift Container Platform release 4.12.9, which includes security updates, is now available. The list of bug fixes that are included in the update is documented in the RHSA-2023:1409 advisory. The RPM packages that are included in the update are provided by the RHSA-2023:1408 advisory.

You can view the container images in this release by running the following command:

$ oc adm release info 4.12.9 --pullspecs

Bug fixes

  • Previously, validation was not preventing users from installing a GCP cluster into a shared VPC if they did not enable the Technology Preview feature gate. Therefore, you could install a cluster into a shared VPC without enabling the Technology Preview feature gate. This release added a feature gate validation to 4.12 so you must enable featureSet: TechPreviewNoUpgrade to install a GCP cluster into a shared VPC. (OCPBUGS-7469)

  • Previously, MTU migration configuration would sometimes be cleaned up before the migration was complete causing the migration to fail. This release ensures that the MTU migration is preserved while migration is in progress so that the migration can complete successfully. (OCPBUGS-7445)

Updating

To update an existing OpenShift Container Platform 4.12 cluster to this latest release, see Updating a cluster using the CLI.

RHBA-2023:1508 - OpenShift Container Platform 4.12.10 bug fix update

Issued: 2023-04-03

OpenShift Container Platform release 4.12.10 is now available. The list of bug fixes that are included in the update is documented in the RHBA-2023:1508 advisory. The RPM packages that are included in the update are provided by the RHBA-2023:1507 advisory.

You can view the container images in this release by running the following command:

$ oc adm release info 4.12.10 --pullspecs

Updating

To update an existing OpenShift Container Platform 4.12 cluster to this latest release, see Updating a cluster using the CLI.

RHSA-2023:1645 - OpenShift Container Platform 4.12.11 bug fix and security update

Issued: 2023-04-11

OpenShift Container Platform release 4.12.11, which includes security updates, is now available. The list of bug fixes that are included in the update is documented in the RHBA-2023:1645 advisory. The RPM packages that are included in the update are provided by the RHBA-2023:1644 advisory.

You can view the container images in this release by running the following command:

$ oc adm release info 4.12.11 --pullspecs

Features

New flag for the oc-mirror plugin: --max-nested-paths

With this update, you can now use the --max-nested-paths flag for the oc-mirror plugin to specify the maximum number of nested paths for destination registries that limit nested paths. The default is 2.

New flag for the oc-mirror plugin: --skip-pruning

With this update, you can now use the --skip-pruning flag for the oc-mirror plugin to disable automatic pruning of images from the target mirror registry.

Bug fixes

  • Previously, the openshift-install agent create cluster-manifests command required a non-empty list of imageContentSources in the install-config.yaml file. If no image content sources were supplied, the command generated the error failed to write asset (Mirror Registries Config) to disk: failed to write file: open .: is a directory. With this update, the command works whether or not the imageContentSources section of install-config.yaml file contains anything. (OCPBUGS-8384)

  • Previously, the OpenStack Machine API provider had to be restarted so that new cloud credentials were used in the event of a rotation of the OpenStack clouds.yaml file. Consequently, the ability of a MachineSet to scale to zero was affected. With this update, cloud credentials are no longer cached and the OpenStack Machine API provider reads the corresponding secret on demand. (OCPBUGS-10603)

Updating

To update an existing OpenShift Container Platform 4.12 cluster to this latest release, see Updating a cluster using the CLI.

RHBA-2023:1734 - OpenShift Container Platform 4.12.12 bug fix

Issued: 2023-04-13

OpenShift Container Platform release 4.12.12 is now available. The list of bug fixes that are included in the update is documented in the RHBA-2023:1734 advisory. There are no RPM packages for this update.

You can view the container images in this release by running the following command:

$ oc adm release info 4.12.12 --pullspecs

Updating

All OpenShift Container Platform 4.12 users are advised that the only defect fixed in this release is limited to install time; therefore, there is no need to update previously installed clusters to this version.

RHBA-2023:1750 - OpenShift Container Platform 4.12.13 bug fix update

Issued: 2023-04-19

OpenShift Container Platform release 4.12.13 is now available. The list of bug fixes that are included in the update is documented in the RHBA-2023:1750 advisory. The RPM packages that are included in the update are provided by the RHBA-2023:1749 advisory.

You can view the container images in this release by running the following command:

$ oc adm release info 4.12.13 --pullspecs

Features

Pod security admission restricted enforcement (Technology Preview)

With this release, pod security admission restricted enforcement is available as a Technology Preview feature by enabling the TechPreviewNoUpgrade feature set. If you enable the TechPreviewNoUpgrade feature set, pods are rejected if they violate pod security standards, instead of only logging a warning.

Pod security admission restricted enforcement is only activated if you enable the TechPreviewNoUpgrade feature set after your OpenShift Container Platform cluster is installed. It is not activated if you enable the TechPreviewNoUpgrade feature set during cluster installation.

For more information, see Understanding feature gates.

Updating

To update an existing OpenShift Container Platform 4.12 cluster to this latest release, see Updating a cluster using the CLI.

RHBA-2023:1858 - OpenShift Container Platform 4.12.14 bug fix update

Issued: 2023-04-24

OpenShift Container Platform release 4.12.14 is now available. The list of bug fixes that are included in the update is documented in the RHBA-2023:1858 advisory. The RPM packages that are included in the update are provided by the RHBA-2023:1857 advisory.

You can view the container images in this release by running the following command:

$ oc adm release info 4.12.14 --pullspecs

Features

Cloud provider OpenStack is updated to 1.25

With this release, Cloud Provider Red Hat OpenStack Platform (RHOSP) is updated to 1.25.5. The update includes the addition of an annotation for real load balancer IP addresses and the global source for math/rand packages are seeded in main.go.

Updating

To update an existing OpenShift Container Platform 4.12 cluster to this latest release, see Updating a cluster using the CLI.

RHBA-2023:2037 - OpenShift Container Platform 4.12.15 bug fix update

Issued: 2023-05-03

OpenShift Container Platform release 4.12.15 is now available. The list of bug fixes that are included in the update is documented in the RHBA-2023:2037 advisory. The RPM packages that are included in the update are provided by the RHBA-2023:2036 advisory.

You can view the container images in this release by running the following command:

$ oc adm release info 4.12.15 --pullspecs

Bug fixes

  • Previously, the Cluster Network Operator (CNO) configuration ignored Kuryr’s maximum transmission unit (MTU) settings when using the Red Hat OpenStack Platform (RHOSP) Networking service (neutron) component to create a network for OpenShift services. CNO would create a network in Neutron with the wrong MTU property, and this action could cause incompatibility issues among network components. With this update, the CNO does not ignore the Kuryr MTU setting when creating the network for services. You can then use the network to host OpenShift services.(OCPBUGS-4896)

Updating

To update an existing OpenShift Container Platform 4.12 cluster to this latest release, see Updating a cluster using the CLI.

RHSA-2023:2110 - OpenShift Container Platform 4.12.16 bug fix and security update

Issued: 2023-05-10

OpenShift Container Platform release 4.12.16, which includes security updates, is now available. The list of bug fixes that are included in the update is documented in the RHSA-2023:2110 advisory. The RPM packages that are included in the update are provided by the RHBA-2023:2109 advisory.

You can view the container images in this release by running the following command:

$ oc adm release info 4.12.16 --pullspecs

Bug fixes

  • Previously, in the Import from Git and Deploy Image flows, the Resource Type section was moved to Advanced section. As a result, it was difficult to identify the type of resource created. With this fix, Resource Type section is moved to the General section. (OCPBUGS-7395)

Updating

To update an existing OpenShift Container Platform 4.12 cluster to this latest release, see Updating a cluster using the CLI.

RHBA-2023:2699 - OpenShift Container Platform 4.12.17 bug fix update

Issued: 2023-05-18

OpenShift Container Platform release 4.12.17 is now available. The list of bug fixes that are included in the update is documented in the RHBA-2023:2699 advisory. The RPM packages that are included in the update are provided by the RHBA-2023:2698 advisory.

You can view the container images in this release by running the following command:

$ oc adm release info 4.12.17 --pullspecs

Bug fixes

  • Previously, you used the edit form for creating ConfigMaps, Secrets, Deployments, and DeploymentConfigs. For BuildConfigs, you used the edit form only for editing. With this fix, you can use the edit form for creating BuildConfigs too. (OCPBUGS-9336)

Updating

To update an existing OpenShift Container Platform 4.12 cluster to this latest release, see Updating a cluster using the CLI.

RHBA-2023:3208 - OpenShift Container Platform 4.12.18 bug fix update

Issued: 2023-05-23

OpenShift Container Platform release 4.12.18 is now available. The list of bug fixes that are included in the update is documented in the RHBA-2023:3208 advisory. The RPM packages that are included in the update are provided by the RHBA-2023:3207 advisory.

You can view the container images in this release by running the following command:

$ oc adm release info 4.12.18 --pullspecs

Bug fixes

  • Previously, the Samples page in the OpenShift Container Platform did not allow distinguishing between the types of samples listed. With this fix, you can identify the sample from the badges displayed on the Samples page. (OCPBUGS-7446)

  • Previously, when viewing resource consumption for a specific pod, graphs displaying CPU usage and Memory Usage metrics were stacked even though these metrics are static values, which should be displayed as a static line across the graph. With this update, OpenShift Container Platform correctly displays the values for CPU Usage and Memory Usage in the monitoring dashboard. (OCPBUGS-5353)

Updating

To update an existing OpenShift Container Platform 4.12 cluster to this latest release, see Updating a cluster using the CLI.

RHSA-2023:3287 - OpenShift Container Platform 4.12.19 bug fix and security update

Issued: 2023-05-31

OpenShift Container Platform release 4.12.19 is now available. The list of bug fixes that are included in the update is documented in the RHSA-2023:3287 advisory. The RPM packages that are included in the update are provided by the RHBA-2023:3286 advisory.

You can view the container images in this release by running the following command:

$ oc adm release info 4.12.19 --pullspecs

Updating

To update an existing OpenShift Container Platform 4.12 cluster to this latest release, see Updating a cluster using the CLI.

RHSA-2023:3410 - OpenShift Container Platform 4.12.20 bug fix update

Issued: 2023-06-07

OpenShift Container Platform release 4.12.20 is now available. The list of bug fixes that are included in the update is documented in the RHSA-2023:3410 advisory. The RPM packages that are included in the update are provided by the RHSA-2023:3409 advisory.

You can view the container images in this release by running the following command:

$ oc adm release info 4.12.20 --pullspecs

Bug fixes

  • Previously, mirroring from a registry to a disk by using an image set configuration file that specifies several digests of the same image, without tags, caused an error because the oc-mirror plugin added a default tag latest to all the images (digests). With this update, the oc-mirror plugin now uses a truncated digest of the image, which eliminantes the error. (OCPBUGS-13432)

Updating

To update an existing OpenShift Container Platform 4.12 cluster to this latest release, see Updating a cluster using the CLI.

RHBA-2023:3546 - OpenShift Container Platform 4.12.21 bug fix and security update

Issued: 2023-06-14

OpenShift Container Platform release 4.12.21, which includes security updates, is now available. The list of bug fixes that are included in the update is documented in the RHBA-2023:3546 advisory. The RPM packages that are included in the update are provided by the RHSA-2023:3545 advisory.

You can view the container images in this release by running the following command:

$ oc adm release info 4.12.21 --pullspecs

Bug fixes

  • Previously on single-node OpenShift, in case of node reboot there was a race condition that could result in admission of application pods requesting devices on the node even if devices were unhealthy or unavailable to be allocated. This resulted in runtime failures when the application tried to access devices. With this update, the resources requested by the pod are only allocated if the device plugin has registered itself to kubelet and healthy devices are present on the node to be allocated.

    If these conditions are not met, the pod can fail at admission with UnexpectedAdmissionError error, which is an expected behavior. If the application pod is part of deployments, in case of failure subsequent pods are created and ultimately successfully run when devices are suitable to be allocated. (OCPBUGS-14437)

Updating

To update an existing OpenShift Container Platform 4.12 cluster to this latest release, see Updating a cluster using the CLI.

RHSA-2023:3615 - OpenShift Container Platform 4.12.22 bug fix and security update

Issued: 2023-06-26

OpenShift Container Platform release 4.12.22, which includes security updates, is now available. The list of bug fixes that are included in the update is documented in the RHSA-2023:3615 advisory. The RPM packages that are included in the update are provided by the RHSA-2023:3613 advisory.

You can view the container images in this release by running the following command:

$ oc adm release info 4.12.22 --pullspecs

Bug fixes

  • Previously, client TLS (mTLS) was configured on an Ingress Controller, and the certificate authority (CA) in the client CA bundle required more than 1MB of certificate revocation list (CRLs) to be downloaded. The CRL ConfigMap object size limitations prevented updates from occurring. As a result of the missing CRLs, connections with valid client certificates may have been rejected with the error unknown ca. With this update, the CRL ConfigMap for each Ingress Controller no longer exists; instead, each router pod directly downloads CRLs, ensuring connections with valid client certificates are no longer rejected. (OCPBUGS-14454)

  • Previously, because client TLS (mTLS) was configured on an Ingress Controller, mismatches between the distributing certificate authority (CA) and the issuing CA caused the incorrect certificate revocation list (CRL) to be downloaded. As a result, the incorrect CRL was downloaded instead of the correct CRL, causing connections with valid client certificates to be rejected with the error message unknown ca. With this update, downloaded CRLs are now tracked by the CA that distributes them. This ensures that valid client certificates are no longer rejected. (OCPBUGS-14455)

Updating

To update an existing OpenShift Container Platform 4.12 cluster to this latest release, see Updating a cluster using the CLI.

RHSA-2023:3925 - OpenShift Container Platform 4.12.23 bug fix and security update

Issued: 2023-07-06

OpenShift Container Platform release 4.12.23, which includes security updates, is now available.This update includes a Red Hat security bulletin for customers who run OpenShift Container Platform in FIPS mode. For more information, see RHSB-2023:001.

The list of bug fixes that are included in the update is documented in the RHSA-2023:3925 advisory. The RPM packages that are included in the update are provided by the RHSA-2023:3924 advisory.

You can view the container images in this release by running the following command:

$ oc adm release info 4.12.23 --pullspecs

Updating

To update an existing OpenShift Container Platform 4.12 cluster to this latest release, see Updating a cluster using the CLI.

RHBA-2023:3977 - OpenShift Container Platform 4.12.24 bug fix and security update

Issued: 2023-07-12

OpenShift Container Platform release 4.12.24, which includes security updates, is now available. The list of bug fixes that are included in the update is documented in the RHBA-2023:3977 advisory. The RPM packages that are included in the update are provided by the RHSA-2023:3976 advisory.

You can view the container images in this release by running the following command:

$ oc adm release info 4.12.24 --pullspecs

Features

NUMA-aware scheduling with the NUMA Resources Operator is generally available

NUMA-aware scheduling with the NUMA Resources Operator was previously introduced as a Technology Preview in OpenShift Container Platform 4.10. It is now generally available in OpenShift Container Platform version 4.12.24 and later.

The NUMA Resources Operator deploys a NUMA-aware secondary scheduler that makes scheduling decisions for workloads based on a complete picture of available NUMA zones in clusters. This enhanced NUMA-aware scheduling ensures that latency-sensitive workloads are processed in a single NUMA zone for maximum efficiency and performance.

This update adds the following features:

  • Fine-tuning of API polling for NUMA resource reports.

  • Configuration options at the node group level for the node topology exporter.

NUMA-aware scheduling with the NUMA Resources Operator is not yet available on single-node OpenShift.

For more information, see Scheduling NUMA-aware workloads.

Updating

To update an existing OpenShift Container Platform 4.12 cluster to this latest release, see Updating a cluster using the CLI.

RHBA-2023:4048 - OpenShift Container Platform 4.12.25 bug fix update

Issued: 2023-07-19

OpenShift Container Platform release 4.12.25 is now available. The list of bug fixes that are included in the update is documented in the RHBA-2023:4048 advisory. The RPM packages that are included in the update are provided by the RHBA-2023:4047 advisory.

You can view the container images in this release by running the following command:

$ oc adm release info 4.12.25 --pullspecs

Updating

To update an existing OpenShift Container Platform 4.12 cluster to this latest release, see Updating a cluster using the CLI.

RHBA-2023:4221 - OpenShift Container Platform 4.12.26 bug fix update

Issued: 2023-07-26

OpenShift Container Platform release 4.12.26 is now available. The list of bug fixes that are included in the update is documented in the RHBA-2023:4221 advisory. There are no RPM packages for this update.

You can view the container images in this release by running the following command:

$ oc adm release info 4.12.26 --pullspecs

Updating

To update an existing OpenShift Container Platform 4.12 cluster to this latest release, see Updating a cluster using the CLI.

RHBA-2023:4319 - OpenShift Container Platform 4.12.27 bug fix update

Issued: 2023-08-02

OpenShift Container Platform release 4.12.27 is now available. The list of bug fixes that are included in the update is documented in the RHBA-2023:4319 advisory. The RPM packages that are included in the update are provided by the RHBA-2023:4322 advisory.

You can view the container images in this release by running the following command:

$ oc adm release info 4.12.27 --pullspecs

Updating

To update an existing OpenShift Container Platform 4.12 cluster to this latest release, see Updating a cluster using the CLI.

RHBA-2023:4440 - OpenShift Container Platform 4.12.28 bug fix update

Issued: 2023-08-09

OpenShift Container Platform release 4.12.28 is now available. The list of bug fixes that are included in the update is documented in the RHBA-2023:4440 advisory. The RPM packages that are included in the update are provided by the RHBA-2023:4443 advisory.

You can view the container images in this release by running the following command:

$ oc adm release info 4.12.28 --pullspecs

Updating

To update an existing OpenShift Container Platform 4.12 cluster to this latest release, see Updating a cluster using the CLI.

RHBA-2023:4608 - OpenShift Container Platform 4.12.29 bug fix update

Issued: 2023-08-16

OpenShift Container Platform release 4.12.29 is now available. The list of bug fixes that are included in the update is documented in the RHBA-2023:4608 advisory. The RPM packages that are included in the update are provided by the RHBA-2023:4611 advisory.

You can view the container images in this release by running the following command:

$ oc adm release info 4.12.29 --pullspecs

Bug fixes

  • Previously, the Ingress Operator did not include an Amazon Web Services (AWS) permission in its cloud credentials request. This impacted the management of domain name system (DNS) records in the Commercial Cloud Services (C2S) us-iso-east-1 and the Secret Commercial Cloud Services (SC2S) us-isob-east-1 AWS Regions. If you installed an OpenShift Container Platform cluster in a C2S or an SC2S AWS Region, the Ingress Operator failed to publish DNS records for the Route 53 service and you received an error message similar to the following example:

    The DNS provider failed to ensure the record: failed to find hosted zone for record: failed to get tagged resources: AccessDenied: User: [...] is not authorized to perform: route53:ListTagsForResources on resource: [...]

    With this update, the Ingress Operator’s cloud credentials request includes the route53:ListTagsForResources permission, so that the Operator can publish DNS records in the C2S and SC2S AWS Regions for the Route 53 service. (OCPBUGS-15467)

Updating

To update an existing OpenShift Container Platform 4.12 cluster to this latest release, see Updating a cluster using the CLI.

RHSA-2023:4671 - OpenShift Container Platform 4.12.30 bug fix update

Issued: 2023-08-23

OpenShift Container Platform release 4.12.30, which includes security updates, is now available. The list of bug fixes that are included in the update is documented in the RHSA-2023:4671 advisory. The RPM packages that are included in the update are provided by the RHSA-2023:4674 advisory.

You can view the container images in this release by running the following command:

$ oc adm release info 4.12.30 --pullspecs

Updating

To update an existing OpenShift Container Platform 4.12 cluster to this latest release, see Updating a cluster using the CLI.

RHBA-2023:4756 - OpenShift Container Platform 4.12.31 bug fix update

Issued: 2023-08-31

OpenShift Container Platform release 4.12.31 is now available. The list of bug fixes that are included in the update is documented in the RHBA-2023:4756 advisory. The RPM packages that are included in the update are provided by the RHBA-2023:4759 advisory.

You can view the container images in this release by running the following command:

$ oc adm release info 4.12.31 --pullspecs

Updating

To update an existing OpenShift Container Platform 4.12 cluster to this latest release, see Updating a cluster using the CLI.

RHBA-2023:4900 - OpenShift Container Platform 4.12.32 bug fix update

Issued: 2023-09-06

OpenShift Container Platform release 4.12.32 is now available. The list of bug fixes that are included in the update is documented in the RHBA-2023:4900 advisory. The RPM packages that are included in the update are provided by the RHBA-2023:4903 advisory.

You can view the container images in this release by running the following command:

$ oc adm release info 4.12.32 --pullspecs

Bug fix

  • Previously, an issue was observed in OpenShift Container Platform with some pods getting stuck in the terminating state. This affected the reconciliation loop of the allowlist controller, which resulted in unwanted retries that caused the creation of multiple pods. With this update, the allowlist controller only inspects pods that belong to the current daemon set. As a result, retries no longer occur when one or more pods are not ready. (OCPBUGS-16019)

Updating

To update an existing OpenShift Container Platform 4.12 cluster to this latest release, see Updating a cluster using the CLI.

RHBA-2023:5016 - OpenShift Container Platform 4.12.33 bug fix update

Issued: 2023-09-12

OpenShift Container Platform release 4.12.33 is now available. The list of bug fixes that are included in the update is documented in the RHBA-2023:5016 advisory. The RPM packages that are included in the update are provided by the RHBA-2023:5018 advisory.

You can view the container images in this release by running the following command:

$ oc adm release info 4.12.33 --pullspecs

Updating

To update an existing OpenShift Container Platform 4.12 cluster to this latest release, see Updating a cluster using the CLI.

RHBA-2023:5151 - OpenShift Container Platform 4.12.34 bug fix update

Issued: 2023-09-20

OpenShift Container Platform release 4.12.34 is now available. The list of bug fixes that are included in the update is documented in the RHBA-2023:5151 advisory. There are no RPM packages for this release.

You can view the container images in this release by running the following command:

$ oc adm release info 4.12.34 --pullspecs

Bug fixes

  • Previously, a non-compliant upstream DNS server that provided a UDP response larger than OpenShift Container Platform specified bufsize of 512 bytes, caused an overflow error in CoreDNS in which a response to a DNS query was not given. With this update, users can configure the protocolStrategy field on the dnses.operator.openshift.io custom resource to be "TCP". This resolves issues with non-compliant upstream DNS servers. (OCPBUGS-15251)

  • Previously, the OpenShift Container Platform Router directed traffic to a route with a weight of 0 when it had only one back end. With this update, the router will not send traffic to routes with a single back end with weight 0. (OCPBUGS-18639)

  • Previously, the cloud credentials used in Manila CSI Driver Operator were cached, resulting in authentication issues if these credentials were rotated. With this update, this issue is resolved. (OCPBUGS-18475)

Updating

To update an existing OpenShift Container Platform 4.12 cluster to this latest release, see Updating a cluster using the CLI.

RHBA-2023:5321 - OpenShift Container Platform 4.12.35 bug fix update

Issued: 2023-09-27

OpenShift Container Platform release 4.12.35 is now available. The list of bug fixes that are included in the update is documented in the RHBA-2023:5321 advisory. The RPM packages that are included in the update are provided by the RHBA-2023:5323 advisory.

You can view the container images in this release by running the following command:

$ oc adm release info 4.12.35 --pullspecs

Updating

To update an existing OpenShift Container Platform 4.12 cluster to this latest release, see Updating a cluster using the CLI.

RHSA-2023:5390 - OpenShift Container Platform 4.12.36 bug fix and security update

Issued: 2023-10-04

OpenShift Container Platform release 4.12.36, which includes security updates, is now available. The list of bug fixes that are included in the update is documented in the RHSA-2023:5390 advisory. The RPM packages that are included in the update are provided by the RHBA-2023:5392 advisory.

You can view the container images in this release by running the following command:

$ oc adm release info 4.12.36 --pullspecs

Updating

To update an existing OpenShift Container Platform 4.12 cluster to this latest release, see Updating a cluster using the CLI.

RHBA-2023:5450 - OpenShift Container Platform 4.12.37 bug fix update

Issued: 2023-10-11

OpenShift Container Platform release 4.12.37 is now available. The list of bug fixes that are included in the update is documented in the RHBA-2023:5450 advisory. The RPM packages that are included in the update are provided by the RHBA-2023:5452 advisory.

You can view the container images in this release by running the following command:

$ oc adm release info 4.12.37 --pullspecs

Updating

To update an existing OpenShift Container Platform 4.12 cluster to this latest release, see Updating a cluster using the CLI.

RHSA-2023:5677 - OpenShift Container Platform 4.12.39 bug fix and security update

Issued: 2023-10-18

OpenShift Container Platform release 4.12.39, which includes security updates, is now available. The list of bug fixes that are included in the update is documented in the RHSA-2023:5677 advisory. The RPM packages that are included in the update are provided by the RHSA-2023:5679 advisory.

You can view the container images in this release by running the following command:

$ oc adm release info 4.12.39 --pullspecs

Bug fixes

  • Previously, CoreDNS would crash if an EndpointSlice port was created without a port number. With this update, validation was added to CoreDNS so it will no longer crash in this situation. (OCPBUGS-20144)

  • Previously, large clusters were slow to attach volumes through cinder-csi-driver. With this update, cinder-csi-driver is updated with slow volume attachment when the number of Cinder volumes in the project exceed 1000. (OCPBUGS-20124)

Updating

To update an existing OpenShift Container Platform 4.12 cluster to this latest release, see Updating a cluster using the CLI.

RHSA-2023:5896 - OpenShift Container Platform 4.12.40 bug fix and security update

Issued: 2023-10-25

OpenShift Container Platform release 4.12.40, which includes security updates, is now available. The list of bug fixes that are included in the update is documented in the RHSA-2023:5896 advisory. The RPM packages that are included in the update are provided by the RHBA-2023:5898 advisory.

You can view the container images in this release by running the following command:

$ oc adm release info 4.12.40 --pullspecs

Updating

To update an existing OpenShift Container Platform 4.12 cluster to this latest release, see Updating a cluster using the CLI.

RHSA-2023:6126 - OpenShift Container Platform 4.12.41 bug fix and security update

Issued: 2023-11-02

OpenShift Container Platform release 4.12.41, which includes security updates, is now available. The list of bug fixes that are included in the update is documented in the RHSA-2023:6126 advisory. The RPM packages that are included in the update are provided by the RHSA-2023:6128 advisory.

You can view the container images in this release by running the following command:

$ oc adm release info 4.12.41 --pullspecs

Updating

To update an existing OpenShift Container Platform 4.12 cluster to this latest release, see Updating a cluster using the CLI.

RHSA-2023:6276 - OpenShift Container Platform 4.12.42 bug fix and security update

Issued: 2023-11-08

OpenShift Container Platform release 4.12.42, which includes security updates, is now available. The list of bug fixes that are included in the update is documented in the RHSA-2023:6276 advisory. The RPM packages that are included in the update are provided by the RHBA-2023:6278 advisory.

You can view the container images in this release by running the following command:

$ oc adm release info 4.12.42 --pullspecs

Feature

APIServer.config.openshift.io is now tracked by Insights Operator

After running the Insights Operator, a new file is now available in the archive in the path config/apiserver.json with the information about the audit profile for APIServer.config.openshift.io.

Access to audit profiles help you to understand what audit policy is common practice, what profiles are most commonly used, what differences there are between industries, and what kind of customization is applied.

Bug fixes

  • Previously, the Cluster Version Operator (CVO) did not reconcile SecurityContextConstraints (SCC) resources as expected. The CVO now properly reconciles the volumes field in the SecurityContextConstraints resources towards the state defined in the release image. User modifications to system SCC resources are tolerated. For more information about how SCC resources can impact updating, see Resolving Detected modified SecurityContextConstraints update gate before upgrading to 4.14 . (OCPBUGS-22198)

  • Previously, a large number of ClusterServiceVersion (CSV) resources on startup caused a pod running the Node Tuning Operator (NTO) to restart and loop, which resulted in an error. With this update, the issue is fixed. (OCPBUGS-21837)

Updating

To update an existing OpenShift Container Platform 4.12 cluster to this latest release, see Updating a cluster using the CLI.

RHSA-2023:6842 - OpenShift Container Platform 4.12.43 bug fix and security update

Issued: 2023-11-16

OpenShift Container Platform release 4.12.43, which includes security updates, is now available. The list of bug fixes that are included in the update is documented in the RHSA-2023:6842 advisory. The RPM packages that are included in the update are provided by the RHBA-2023:6844 advisory.

You can view the container images in this release by running the following command:

$ oc adm release info 4.12.43 --pullspecs

Updating

To update an existing OpenShift Container Platform 4.12 cluster to this latest release, see Updating a cluster using the CLI.

RHSA-2023:6894 - OpenShift Container Platform 4.12.44 bug fix and security update

Issued: 2023-11-21

OpenShift Container Platform release 4.12.44, which includes security updates, is now available. The list of bug fixes that are included in the update is documented in the RHSA-2023:6894 advisory. The RPM packages that are included in the update are provided by the RHBA-2023:6896 advisory.

You can view the container images in this release by running the following command:

$ oc adm release info 4.12.44 --pullspecs

Updating

To update an existing OpenShift Container Platform 4.12 cluster to this latest release, see Updating a cluster using the CLI.

RHSA-2023:7608 - OpenShift Container Platform 4.12.45 bug fix and security update

Issued: 2023-12-06

OpenShift Container Platform release 4.12.45, which includes security updates, is now available. The list of bug fixes that are included in the update is documented in the RHSA-2023:7608 advisory. The RPM packages that are included in the update are provided by the RHSA-2023:7610 advisory.

You can view the container images in this release by running the following command:

$ oc adm release info 4.12.45 --pullspecs

Bug fixes

  • Previously, using the cluster autoscaler with nodes that have CSI storage would cause the cluster autoscaler pods to enter in a CrashLoopBackoff status. With this release, you can use the cluster autoscaler with nodes that have CSI storage successfully. (OCPBUGS-23274)

  • Previously, you could not assign an egress IP to the egress node on an Azure private cluster. With this release, egress IP is enabled for Azure private clusters that use outbound rules to achieve outbound connectivity. (OCPBUGS-22949)

  • Previously, there was no suitable virtual media device for Cisco UCS Blade. With this release, you can use Redfish virtual media to provision Cisco UCS hardware. (OCPBUGS-19064)

Updating

To update an existing OpenShift Container Platform 4.12 cluster to this latest release, see Updating a cluster using the CLI.

RHSA-2023:7823 - OpenShift Container Platform 4.12.46 bug fix and security update

Issued: 2024-01-04

OpenShift Container Platform release 4.12.46, which includes security updates, is now available. The list of bug fixes that are included in the update is documented in the RHSA-2023:7823 advisory. The RPM packages that are included in the update are provided by the RHBA-2023:7825 advisory.

You can view the container images in this release by running the following command:

$ oc adm release info 4.12.46 --pullspecs

Bug fixes

  • Previously, the Image Registry Operator made API calls to the Storage Account List endpoint as part of obtaining access keys every 5 minutes. In projects with several OpenShift Container Platform clusters, this could lead to API rate limits being reached, which could result in several HTTP errors when attempting to create new clusters. With this release, the time between calls is increased from 5 minutes to 20 minutes. (OCPBUGS-22125)

Updating

To update an existing OpenShift Container Platform 4.12 cluster to this latest release, see Updating a cluster using the CLI.

RHSA-2024:0198 - OpenShift Container Platform 4.12.47 bug fix and security update

Issued: 2024-01-17

OpenShift Container Platform release 4.12.47, which includes security updates, is now available. The list of bug fixes that are included in the update is documented in the RHSA-2024:0198 advisory. The RPM packages that are included in the update are provided by the RHSA-2024:0200 advisory.

You can view the container images in this release by running the following command:

$ oc adm release info 4.12.47 --pullspecs

Bug fixes

  • Previously, the spec.storage.deviceClasses.thinPoolConfig.overprovisionRatio value on a Logical Volume Manager Storage (LVMS) cluster custom resource could only be set to a minimum of 2. With this release, the spec.storage.deviceClasses.thinPoolConfig.overprovisionRatio value can now be set to as low as 1, which disables overprovisioning. (OCPBUGS-24480)

Updating

To update an existing OpenShift Container Platform 4.12 cluster to this latest release, see Updating a cluster using the CLI.

RHSA-2024:0485 - OpenShift Container Platform 4.12.48 bug fix and security update

Issued: 2024-01-31

OpenShift Container Platform release 4.12.48, which includes security updates, is now available. The list of bug fixes that are included in the update is documented in the RHSA-2024:0485 advisory. The RPM packages that are included in the update are provided by the RHSA-2024:0489 advisory.

You can view the container images in this release by running the following command:

$ oc adm release info 4.12.48 --pullspecs

Updating

To update an existing OpenShift Container Platform 4.12 cluster to this latest release, see Updating a cluster using the CLI.

RHSA-2024:0664 - OpenShift Container Platform 4.12.49 bug fix and security update

Issued: 2024-02-09

OpenShift Container Platform release 4.12.49, which includes security updates, is now available. The list of bug fixes that are included in the update is documented in the RHSA-2024:0664 advisory. The RPM packages that are included in the update are provided by the RHSA-2024:0666 advisory.

You can view the container images in this release by running the following command:

$ oc adm release info 4.12.49 --pullspecs

Bug fixes

  • Previously, pods assigned an IP from the pool created by the Whereabouts CNI plugin were getting stuck in ContainerCreating state after a node force reboot. With this release, the Whereabouts CNI plugin issue associated with the IP allocation after a node force reboot is resolved. (OCPBUGS-16008)

Updating

To update an existing OpenShift Container Platform 4.12 cluster to this latest release, see Updating a cluster using the CLI.

RHSA-2024:0833 - OpenShift Container Platform 4.12.50 bug fix and security update

Issued: 2024-02-21

OpenShift Container Platform release 4.12.50, which includes security updates, is now available. The list of bug fixes that are included in the update is documented in the RHSA-2024:0833 advisory. The RPM packages that are included in the update are provided by the RHBA-2024:0835 advisory.

You can view the container images in this release by running the following command:

$ oc adm release info 4.12.50 --pullspecs

Bug fixes

  • Previously, CPU limits applied on the Amazon Elastic File System (EFS) Container Storage Interface (CSI) driver container caused performance degradation issues for I/O operations to EFS volumes. Now, the CPU limits for the EFS CSI driver are removed so the performance degradation issue no longer occurs. (OCPBUGS-29066)

Updating

To update an existing OpenShift Container Platform 4.12 cluster to this latest release, see Updating a cluster using the CLI.

RHSA-2024:1052 - OpenShift Container Platform 4.12.51 bug fix and security update

Issued: 2024-03-06

OpenShift Container Platform release 4.12.51, which includes security updates, is now available. The list of bug fixes that are included in the update is documented in the RHSA-2024:1052 advisory. The RPM packages that are included in the update are provided by the RHBA-2024:1054 advisory.

You can view the container images in this release by running the following command:

$ oc adm release info 4.12.51 --pullspecs

Bug fixes

  • Previously, when the most recent and default channels were selectively mirrored, and a new release introduced a new channel, the current default channel became invalid. This caused the automatic assignment of the new default channel to fail. With this release, you can now define a defaultChannel field in the ImageSetConfig custom resource (CR) that overrides the currentDefault channel. (OCPBUGS-29232)

  • Previously, the compat-openssl10 package was included in the Red Hat Enterprise Linux CoreOS (RHCOS). This package did not meet Common Vulnerabilities and Exposures (CVE) remediation requirements for Federal Risk and Authorization Management Program (FedRAMP). With this release, compat-openssl10 has been removed from the RHCOS. As a result, security scanners will no longer identify potential common vulnerabilities and exposures (CVEs) in this package. Any binary running on the host RHCOS requiring Red Hat Enterprise Linux (RHEL) OpenSSL compatibility must be upgraded to support RHEL8 OpenSSL. (OCPBUGS-22928)

Updating

To update an existing OpenShift Container Platform 4.12 cluster to this latest release, see Updating a cluster using the CLI.

RHSA-2024:1265 - OpenShift Container Platform 4.12.53 bug fix update

Issued: 2024-03-20

OpenShift Container Platform release 4.12.53 is now available. The list of bug fixes that are included in the update is documented in the RHSA-2024:1265 advisory. The RPM packages that are included in the update are provided by the RHSA-2024:1267 advisory.

You can view the container images in this release by running the following command:

$ oc adm release info 4.12.53 --pullspecs

Updating

To update an existing OpenShift Container Platform 4.12 cluster to this latest release, see Updating a cluster using the CLI.

RHSA-2024:1572 - OpenShift Container Platform 4.12.54 bug fix and security update

Issued: 2024-04-03

OpenShift Container Platform release 4.12.54, which includes security updates, is now available. The list of bug fixes that are included in the update is documented in the RHSA-2024:1572 advisory. The RPM packages that are included in the update are provided by the RHSA-2024:1574 advisory.

You can view the container images in this release by running the following command:

$ oc adm release info 4.12.54 --pullspecs

Updating

To update an existing OpenShift Container Platform 4.12 cluster to this latest release, see Updating a cluster using the CLI.

RHSA-2024:1679 - OpenShift Container Platform 4.12.55 bug fix and security update

Issued: 2024-04-08

OpenShift Container Platform release 4.12.55, which includes security updates, is now available. The list of bug fixes that are included in the update is documented in the RHSA-2024:1679 advisory. There are no RPM packages for this update.

You can view the container images in this release by running the following command:

$ oc adm release info 4.12.55 --pullspecs

Bug fixes

  • Previously, the manila-csi-driver-controller-metrics service had empty endpoints due to an incorrect name for the app selector. With this release the app selector name is changed to openstack-manila-csi and the issue is fixed. (OCPBUGS-30295)

Updating

To update an existing OpenShift Container Platform 4.12 cluster to this latest release, see Updating a cluster using the CLI.