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Installation configuration parameters for IBM Power Virtual Server

Before you deploy an OpenShift Container Platform on IBM Power® Virtual Server, you provide parameters to customize your cluster and the platform that hosts it. When you create the install-config.yaml file, you provide values for the required parameters through the command line. You can then modify the install-config.yaml file to customize your cluster further.

Available installation configuration parameters for IBM Power Virtual Server

The following tables specify the required, optional, and IBM Power Virtual Server-specific installation configuration parameters that you can set as part of the installation process.

After installation, you cannot modify these parameters in the install-config.yaml file.

Required configuration parameters

Required installation configuration parameters are described in the following table:

Table 1. Required parameters
Parameter Description Values 
apiVersion:

The API version for the install-config.yaml content. The current version is v1. The installation program may also support older API versions.

String

 
baseDomain:

The base domain of your cloud provider. The base domain is used to create routes to your OpenShift Container Platform cluster components. The full DNS name for your cluster is a combination of the baseDomain and metadata.name parameter values that uses the <metadata.name>.<baseDomain> format.

A fully-qualified domain or subdomain name, such as example.com.

 
metadata:

Kubernetes resource ObjectMeta, from which only the name parameter is consumed.

Object

 
metadata:
  name:

The name of the cluster. DNS records for the cluster are all subdomains of {{.metadata.name}}.{{.baseDomain}}.

String of lowercase letters, hyphens (-), and periods (.), such as dev.

 
platform:

The configuration for the specific platform upon which to perform the installation: alibabacloud, aws, baremetal, azure, gcp, ibmcloud, nutanix, openstack, powervs, vsphere, or {}. For additional information about platform.<platform> parameters, consult the table for your specific platform that follows.

Object

 
pullSecret:

Get a pull secret from Red Hat OpenShift Cluster Manager to authenticate downloading container images for OpenShift Container Platform components from services such as Quay.io.

 
{
   "auths":{
      "cloud.openshift.com":{
         "auth":"b3Blb=",
         "email":"you@example.com"
      },
      "quay.io":{
         "auth":"b3Blb=",
         "email":"you@example.com"
      }
   }
}
 
platform:
  powervs:
    userID:

The UserID is the login for the user’s IBM Cloud® account.

String. For example, existing_user_id.

 
platform:
  powervs:
    powervsResourceGroup:

The PowerVSResourceGroup is the resource group in which IBM Power® Virtual Server resources are created. If using an existing VPC, the existing VPC and subnets should be in this resource group.

String. For example, existing_resource_group.

 
platform:
  powervs:
    region:

Specifies the IBM Cloud® colo region where the cluster will be created.

String. For example, existing_region.

 
platform:
  powervs:
    zone:

Specifies the IBM Cloud® colo region where the cluster will be created.

String. For example, existing_zone.

Network configuration parameters

You can customize your installation configuration based on the requirements of your existing network infrastructure. For example, you can expand the IP address block for the cluster network or provide different IP address blocks than the defaults.

Only IPv4 addresses are supported.

Globalnet is not supported with Red Hat OpenShift Data Foundation disaster recovery solutions. For regional disaster recovery scenarios, ensure that you use a nonoverlapping range of private IP addresses for the cluster and service networks in each cluster.
Table 2. Network parameters
Parameter Description Values 
networking:

The configuration for the cluster network.

Object

You cannot modify parameters specified by the networking object after installation.

 
networking:
  networkType:

The Red Hat OpenShift Networking network plugin to install.

The default value is OVNKubernetes.

 
networking:
  clusterNetwork:

The IP address blocks for pods.

The default value is 10.128.0.0/14 with a host prefix of /23.

If you specify multiple IP address blocks, the blocks must not overlap.

An array of objects. For example:

networking:
  clusterNetwork:
  - cidr: 10.128.0.0/14
    hostPrefix: 23
 
networking:
  clusterNetwork:
    cidr:

Required if you use networking.clusterNetwork. An IP address block.

An IPv4 network.

An IP address block in Classless Inter-Domain Routing (CIDR) notation. The prefix length for an IPv4 block is between 0 and 32.

 
networking:
  clusterNetwork:
    hostPrefix:

The subnet prefix length to assign to each individual node. For example, if hostPrefix is set to 23 then each node is assigned a /23 subnet out of the given cidr. A hostPrefix value of 23 provides 510 (2^(32 - 23) - 2) pod IP addresses.

A subnet prefix.

The default value is 23.

 
networking:
  serviceNetwork:

The IP address block for services. The default value is 172.30.0.0/16.

The OVN-Kubernetes network plugins supports only a single IP address block for the service network.

An array with an IP address block in CIDR format. For example:

networking:
  serviceNetwork:
   - 172.30.0.0/16
 
networking:
  machineNetwork:

The IP address blocks for machines.

An array of objects. For example:

networking:
  machineNetwork:
  - cidr: 10.0.0.0/16
 
networking:
  machineNetwork:
    cidr:

Required if you use networking.machineNetwork. An IP address block. The default value is 10.0.0.0/16 for all platforms other than libvirt and IBM Power® Virtual Server. For libvirt, the default value is 192.168.126.0/24. For IBM Power® Virtual Server, the default value is 192.168.0.0/24.

An IP network block in CIDR notation.

For example, 192.168.0.0/24.

Set the networking.machineNetwork to match the CIDR that the preferred NIC resides in.

Optional configuration parameters

Optional installation configuration parameters are described in the following table:

Table 3. Optional parameters
Parameter Description Values 
additionalTrustBundle:

A PEM-encoded X.509 certificate bundle that is added to the nodes' trusted certificate store. This trust bundle may also be used when a proxy has been configured.

String

 
capabilities:

Controls the installation of optional core cluster components. You can reduce the footprint of your OpenShift Container Platform cluster by disabling optional components. For more information, see the "Cluster capabilities" page in Installing.

String array

 
capabilities:
  baselineCapabilitySet:

Selects an initial set of optional capabilities to enable. Valid values are None, v4.11, v4.12 and vCurrent. The default value is vCurrent.

String

 
capabilities:
  additionalEnabledCapabilities:

Extends the set of optional capabilities beyond what you specify in baselineCapabilitySet. You may specify multiple capabilities in this parameter.

String array

 
cpuPartitioningMode:

Enables workload partitioning, which isolates OpenShift Container Platform services, cluster management workloads, and infrastructure pods to run on a reserved set of CPUs. Workload partitioning can only be enabled during installation and cannot be disabled after installation. While this field enables workload partitioning, it does not configure workloads to use specific CPUs. For more information, see the Workload partitioning page in the Scalability and Performance section.

None or AllNodes. None is the default value.

 
compute:

The configuration for the machines that comprise the compute nodes.

Array of MachinePool objects.

 
compute:
  architecture:

Determines the instruction set architecture of the machines in the pool. Currently, heteregeneous clusters are not supported, so all pools must specify the same architecture. Valid values are ppc64le (the default).

String

 
compute:
  hyperthreading:

Whether to enable or disable simultaneous multithreading, or hyperthreading, on compute machines. By default, simultaneous multithreading is enabled to increase the performance of your machines' cores.

If you disable simultaneous multithreading, ensure that your capacity planning accounts for the dramatically decreased machine performance.

Enabled or Disabled

 
compute:
  smtLevel:

The SMTLevel specifies the level of SMT to set to the control plane and compute machines. Valid values are 1, 2, 3, 4, 5, 6, 7, 8, off, and on.

String

 
compute:
  name:

Required if you use compute. The name of the machine pool.

worker

 
compute:
  platform:

Required if you use compute. Use this parameter to specify the cloud provider to host the worker machines. This parameter value must match the controlPlane.platform parameter value. Example usage, compute.platform.powervs.sysType.

alibabacloud, aws, azure, gcp, ibmcloud, nutanix, openstack, powervs, vsphere, or {}

 
compute:
  replicas:

The number of compute machines, which are also known as worker machines, to provision.

A positive integer greater than or equal to 2. The default value is 3.

 
featureSet:

Enables the cluster for a feature set. 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 features using feature gates".

String. The name of the feature set to enable, such as TechPreviewNoUpgrade.

 
controlPlane:

The configuration for the machines that comprise the control plane.

Array of MachinePool objects.

 
controlPlane:
  architecture:

Determines the instruction set architecture of the machines in the pool. Currently, heterogeneous clusters are not supported, so all pools must specify the same architecture. Valid values are ppc64le (the default).

String

 
controlPlane:
  hyperthreading:

Whether to enable or disable simultaneous multithreading, or hyperthreading, on control plane machines. By default, simultaneous multithreading is enabled to increase the performance of your machines' cores.

If you disable simultaneous multithreading, ensure that your capacity planning accounts for the dramatically decreased machine performance.

Enabled or Disabled

 
controlPlane:
  name:

Required if you use controlPlane. The name of the machine pool.

master

 
controlPlane:
  platform:

Required if you use controlPlane. Use this parameter to specify the cloud provider that hosts the control plane machines. This parameter value must match the compute.platform parameter value. Example usage, controlPlane.platform.powervs.processors.

alibabacloud, aws, azure, gcp, ibmcloud, nutanix, openstack, powervs, vsphere, or {}

 
controlPlane:
  replicas:

The number of control plane machines to provision.

Supported values are 3, or 1 when deploying single-node OpenShift.

 
credentialsMode:

The Cloud Credential Operator (CCO) mode. If no mode is specified, the CCO dynamically tries to determine the capabilities of the provided credentials, with a preference for mint mode on the platforms where multiple modes are supported.

Mint, Passthrough, Manual or an empty string (""). [1]

 
imageContentSources:

Sources and repositories for the release-image content.

Array of objects. Includes a source and, optionally, mirrors, as described in the following rows of this table.

 
imageContentSources:
  source:

Required if you use imageContentSources. Specify the repository that users refer to, for example, in image pull specifications.

String

 
imageContentSources:
  mirrors:

Specify one or more repositories that may also contain the same images.

Array of strings

 
publish:

How to publish or expose the user-facing endpoints of your cluster, such as the Kubernetes API, OpenShift routes.

Internal or External. The default value is External.

Setting this field to Internal is not supported on non-cloud platforms.

 
sshKey:

The SSH key to authenticate access to your cluster machines.

For production OpenShift Container Platform clusters on which you want to perform installation debugging or disaster recovery, specify an SSH key that your ssh-agent process uses.

For example, sshKey: ssh-ed25519 AAAA...

 
platform:
  powervs:
    vpcRegion:

Specifies the IBM Cloud® region in which to create VPC resources.

String. For example, existing_vpc_region.

 
platform:
  powervs:
    vpcSubnets:

Specifies existing subnets (by name) where cluster resources will be created.

String. For example, powervs_region_example_subnet.

 
platform:
  powervs:
    vpcName:

Specifies the IBM Cloud® name.

String. For example, existing_vpcName.

 
platform:
  powervs:
    serviceInstanceGUID:

The ServiceInstanceGUID is the ID of the Power IAAS instance created from the IBM Cloud® Catalog.

String. For example, existing_service_instance_GUID.

 
platform:
  powervs:
    clusterOSImage:

The ClusterOSImage is a pre-created IBM Power® Virtual Server boot image that overrides the default image for cluster nodes.

String. For example, existing_cluster_os_image.

 
platform:
  powervs:
    defaultMachinePlatform:

The DefaultMachinePlatform is the default configuration used when installing on IBM Power® Virtual Server for machine pools that do not define their own platform configuration.

String. For example, existing_machine_platform.

 
platform:
  powervs:
    memoryGiB:

The size of a virtual machine’s memory, in GB.

The valid integer must be an integer number of GB that is at least 2 and no more than 64, depending on the machine type.

 
platform:
  powervs:
    procType:

The ProcType defines the processor sharing model for the instance.

The valid values are Capped, Dedicated, and Shared.

 
platform:
  powervs:
    processors:

The Processors defines the processing units for the instance.

The number of processors must be from .5 to 32 cores. The processors must be in increments of .25.

 
platform:
  powervs:
    sysType:

The SysType defines the system type for the instance.

The system type must be either e980 or s922.

  1. Not all CCO modes are supported for all cloud providers. For more information about CCO modes, see the "Managing cloud provider credentials" entry in the Authentication and authorization content.