$ sudo openstack quota set --secgroups 250 --secgroup-rules 1000 --ports 1500 --subnets 250 --networks 250 <project>install-config.yaml file for RHOSP with KuryrIn OpenShift Container Platform version 4.9, you can install a customized cluster on
Red Hat OpenStack Platform (RHOSP) that uses Kuryr SDN. To customize the installation, modify parameters in the install-config.yaml before you install the cluster.
You reviewed details about the OpenShift Container Platform installation and update processes.
You read the documentation on selecting a cluster installation method and preparing it for users.
You verified that OpenShift Container Platform 4.9 is compatible with your RHOSP version by using the Supported platforms for OpenShift clusters section. You can also compare platform support across different versions by viewing the OpenShift Container Platform on RHOSP support matrix.
You have a storage service installed in RHOSP, such as block storage (Cinder) or object storage (Swift). Object storage is the recommended storage technology for OpenShift Container Platform registry cluster deployment. For more information, see Optimizing storage.
Kuryr is a container network interface (CNI) plug-in solution that uses the Neutron and Octavia Red Hat OpenStack Platform (RHOSP) services to provide networking for pods and Services.
Kuryr and OpenShift Container Platform integration is primarily designed for OpenShift Container Platform clusters running on RHOSP VMs. Kuryr improves the network performance by plugging OpenShift Container Platform pods into RHOSP SDN. In addition, it provides interconnectivity between pods and RHOSP virtual instances.
Kuryr components are installed as pods in OpenShift Container Platform using the
openshift-kuryr namespace:
kuryr-controller - a single service instance installed on a master node.
This is modeled in OpenShift Container Platform as a Deployment object.
kuryr-cni - a container installing and configuring Kuryr as a CNI driver on
each OpenShift Container Platform node. This is modeled in OpenShift Container Platform as a DaemonSet object.
The Kuryr controller watches the OpenShift Container Platform API server for pod, service, and namespace create, update, and delete events. It maps the OpenShift Container Platform API calls to corresponding objects in Neutron and Octavia. This means that every network solution that implements the Neutron trunk port functionality can be used to back OpenShift Container Platform via Kuryr. This includes open source solutions such as Open vSwitch (OVS) and Open Virtual Network (OVN) as well as Neutron-compatible commercial SDNs.
Kuryr is recommended for OpenShift Container Platform deployments on encapsulated RHOSP tenant networks to avoid double encapsulation, such as running an encapsulated OpenShift Container Platform SDN over an RHOSP network.
If you use provider networks or tenant VLANs, you do not need to use Kuryr to avoid double encapsulation. The performance benefit is negligible. Depending on your configuration, though, using Kuryr to avoid having two overlays might still be beneficial.
Kuryr is not recommended in deployments where all of the following criteria are true:
The RHOSP version is less than 16.
The deployment uses UDP services, or a large number of TCP services on few hypervisors.
or
The ovn-octavia Octavia driver is disabled.
The deployment uses a large number of TCP services on few hypervisors.
When using Kuryr SDN, the pods, services, namespaces, and network policies are using resources from the RHOSP quota; this increases the minimum requirements. Kuryr also has some additional requirements on top of what a default install requires.
Use the following quota to satisfy a default cluster’s minimum requirements:
| Resource | Value |
|---|---|
Floating IP addresses |
3 - plus the expected number of Services of LoadBalancer type |
Ports |
1500 - 1 needed per Pod |
Routers |
1 |
Subnets |
250 - 1 needed per Namespace/Project |
Networks |
250 - 1 needed per Namespace/Project |
RAM |
112 GB |
vCPUs |
28 |
Volume storage |
275 GB |
Instances |
7 |
Security groups |
250 - 1 needed per Service and per NetworkPolicy |
Security group rules |
1000 |
Load balancers |
100 - 1 needed per Service |
Load balancer listeners |
500 - 1 needed per Service-exposed port |
Load balancer pools |
500 - 1 needed per Service-exposed port |
A cluster might function with fewer than recommended resources, but its performance is not guaranteed.
|
If RHOSP object storage (Swift) is available and operated by a user account with the |
|
If you are using Red Hat OpenStack Platform (RHOSP) version 16 with the Amphora driver rather than the OVN Octavia driver, security groups are associated with service accounts instead of user projects. |
Take the following notes into consideration when setting resources:
The number of ports that are required is larger than the number of pods. Kuryr uses ports pools to have pre-created ports ready to be used by pods and speed up the pods' booting time.
Each network policy is mapped into an RHOSP security group, and
depending on the NetworkPolicy spec, one or more rules are added to the
security group.
Each service is mapped to an RHOSP load balancer. Consider this requirement when estimating the number of security groups required for the quota.
If you are using
RHOSP version 15 or earlier, or the ovn-octavia driver, each load balancer
has a security group with the user project.
The quota does not account for load balancer resources (such as VM resources), but you must consider these resources when you decide the RHOSP deployment’s size. The default installation will have more than 50 load balancers; the clusters must be able to accommodate them.
If you are using RHOSP version 16 with the OVN Octavia driver enabled, only one load balancer VM is generated; services are load balanced through OVN flows.
An OpenShift Container Platform deployment comprises control plane machines, compute machines, and a bootstrap machine.
To enable Kuryr SDN, your environment must meet the following requirements:
Run RHOSP 13+.
Have Overcloud with Octavia.
Use Neutron Trunk ports extension.
Use openvswitch firewall driver if ML2/OVS Neutron driver is used instead
of ovs-hybrid.
When using Kuryr SDN, you must increase quotas to satisfy the Red Hat OpenStack Platform (RHOSP) resources used by pods, services, namespaces, and network policies.
Increase the quotas for a project by running the following command:
$ sudo openstack quota set --secgroups 250 --secgroup-rules 1000 --ports 1500 --subnets 250 --networks 250 <project>Kuryr CNI leverages the Neutron Trunks extension to plug containers into the
Red Hat OpenStack Platform (RHOSP) SDN, so you must use the trunks extension for Kuryr to properly work.
In addition, if you leverage the default ML2/OVS Neutron driver, the firewall
must be set to openvswitch instead of ovs_hybrid so that security groups are
enforced on trunk subports and Kuryr can properly handle network policies.
Kuryr SDN uses Red Hat OpenStack Platform (RHOSP)'s Octavia LBaaS to implement OpenShift Container Platform services. Thus, you must install and configure Octavia components in RHOSP to use Kuryr SDN.
To enable Octavia, you must include the Octavia service during the installation of the RHOSP Overcloud, or upgrade the Octavia service if the Overcloud already exists. The following steps for enabling Octavia apply to both a clean install of the Overcloud or an Overcloud update.
|
The following steps only capture the key pieces required during the deployment of RHOSP when dealing with Octavia. It is also important to note that registry methods vary. This example uses the local registry method. |
If you are using the local registry, create a template to upload the images to the registry. For example:
(undercloud) $ openstack overcloud container image prepare \
-e /usr/share/openstack-tripleo-heat-templates/environments/services-docker/octavia.yaml \
--namespace=registry.access.redhat.com/rhosp13 \
--push-destination=<local-ip-from-undercloud.conf>:8787 \
--prefix=openstack- \
--tag-from-label {version}-{product-version} \
--output-env-file=/home/stack/templates/overcloud_images.yaml \
--output-images-file /home/stack/local_registry_images.yamlVerify that the local_registry_images.yaml file contains the Octavia images.
For example:
...
- imagename: registry.access.redhat.com/rhosp13/openstack-octavia-api:13.0-43
push_destination: <local-ip-from-undercloud.conf>:8787
- imagename: registry.access.redhat.com/rhosp13/openstack-octavia-health-manager:13.0-45
push_destination: <local-ip-from-undercloud.conf>:8787
- imagename: registry.access.redhat.com/rhosp13/openstack-octavia-housekeeping:13.0-45
push_destination: <local-ip-from-undercloud.conf>:8787
- imagename: registry.access.redhat.com/rhosp13/openstack-octavia-worker:13.0-44
push_destination: <local-ip-from-undercloud.conf>:8787|
The Octavia container versions vary depending upon the specific RHOSP release installed. |
Pull the container images from registry.redhat.io to the Undercloud node:
(undercloud) $ sudo openstack overcloud container image upload \
--config-file /home/stack/local_registry_images.yaml \
--verboseThis may take some time depending on the speed of your network and Undercloud disk.
Since an Octavia load balancer is used to access the OpenShift Container Platform API, you must increase their listeners' default timeouts for the connections. The default timeout is 50 seconds. Increase the timeout to 20 minutes by passing the following file to the Overcloud deploy command:
(undercloud) $ cat octavia_timeouts.yaml
parameter_defaults:
OctaviaTimeoutClientData: 1200000
OctaviaTimeoutMemberData: 1200000|
This is not needed for RHOSP 13.0.13+. |
Install or update your Overcloud environment with Octavia:
$ openstack overcloud deploy --templates \
-e /usr/share/openstack-tripleo-heat-templates/environments/services-docker/octavia.yaml \
-e octavia_timeouts.yaml|
This command only includes the files associated with Octavia; it varies based on your specific installation of RHOSP. See the RHOSP documentation for further information. For more information on customizing your Octavia installation, see installation of Octavia using Director. |
|
When leveraging Kuryr SDN, the Overcloud installation requires the Neutron |
In RHOSP versions earlier than 13.0.13, add the project ID
to the octavia.conf configuration file after you create the project.
To enforce network policies across services, like when traffic goes through the Octavia load balancer, you must ensure Octavia creates the Amphora VM security groups on the user project.
This change ensures that required load balancer security groups belong to that project, and that they can be updated to enforce services isolation.
|
This task is unnecessary in RHOSP version 13.0.13 or later. Octavia implements a new ACL API that restricts access to the load balancers VIP. |
Get the project ID
$ openstack project show <project>+-------------+----------------------------------+
| Field | Value |
+-------------+----------------------------------+
| description | |
| domain_id | default |
| enabled | True |
| id | PROJECT_ID |
| is_domain | False |
| name | *<project>* |
| parent_id | default |
| tags | [] |
+-------------+----------------------------------+Add the project ID to octavia.conf for the controllers.
Source the stackrc file:
$ source stackrc # Undercloud credentialsList the Overcloud controllers:
$ openstack server list+--------------------------------------+--------------+--------+-----------------------+----------------+------------+
│
| ID | Name | Status | Networks
| Image | Flavor |
│
+--------------------------------------+--------------+--------+-----------------------+----------------+------------+
│
| 6bef8e73-2ba5-4860-a0b1-3937f8ca7e01 | controller-0 | ACTIVE |
ctlplane=192.168.24.8 | overcloud-full | controller |
│
| dda3173a-ab26-47f8-a2dc-8473b4a67ab9 | compute-0 | ACTIVE |
ctlplane=192.168.24.6 | overcloud-full | compute |
│
+--------------------------------------+--------------+--------+-----------------------+----------------+------------+SSH into the controller(s).
$ ssh heat-admin@192.168.24.8Edit the octavia.conf file to add the project into the list of projects where
Amphora security groups are on the user’s account.
# List of project IDs that are allowed to have Load balancer security groups # belonging to them. amp_secgroup_allowed_projects = PROJECT_ID
Restart the Octavia worker so the new configuration loads.
controller-0$ sudo docker restart octavia_worker|
Depending on your RHOSP environment, Octavia might not support UDP listeners. If you use Kuryr SDN on RHOSP version 13.0.13 or earlier, UDP services are not supported. RHOSP version 16 or later support UDP. |
Octavia supports multiple provider drivers through the Octavia API.
To see all available Octavia provider drivers, on a command line, enter:
$ openstack loadbalancer provider list+---------+-------------------------------------------------+
| name  | description                   |
+---------+-------------------------------------------------+
| amphora | The Octavia Amphora driver. Â Â Â Â Â Â Â Â Â Â |
| octavia | Deprecated alias of the Octavia Amphora driver. |
| ovn   | Octavia OVN driver.               |
+---------+-------------------------------------------------+Beginning with RHOSP version 16, the Octavia OVN provider driver (ovn) is supported on
OpenShift Container Platform on RHOSP deployments.
ovn is an integration driver for the load balancing
that Octavia and OVN provide. It supports basic load balancing capabilities,
and is based on OpenFlow rules. The driver is automatically enabled
in Octavia by Director on deployments that use OVN Neutron ML2.
The Amphora provider driver is the default driver. If ovn is enabled, however, Kuryr uses it.
If Kuryr uses ovn instead of Amphora, it offers the following benefits:
Decreased resource requirements. Kuryr does not require a load balancer VM for each service.
Reduced network latency.
Increased service creation speed by using OpenFlow rules instead of a VM for each service.
Distributed load balancing actions across all nodes instead of centralized on Amphora VMs.
You can configure your cluster to use the Octavia OVN driver after your RHOSP cloud is upgraded from version 13 to version 16.
Using OpenShift Container Platform with Kuryr SDN has several known limitations.
Using OpenShift Container Platform with Kuryr SDN has several limitations that apply to all versions and environments:
Service objects with the NodePort type are not supported.
Clusters that use the OVN Octavia provider driver support Service objects for which the .spec.selector property is unspecified only if the .subsets.addresses property of the Endpoints object includes the subnet of the nodes or pods.
If the subnet on which machines are created is not connected to a router, or if the subnet is connected, but the router has no external gateway set, Kuryr cannot create floating IPs for Service objects with type LoadBalancer.
Using OpenShift Container Platform with Kuryr SDN has several limitations that depend on the RHOSP version.
RHOSP versions before 16 use the default Octavia load balancer driver (Amphora). This driver requires that one Amphora load balancer VM is deployed per OpenShift Container Platform service. Creating too many services can cause you to run out of resources.
Deployments of later versions of RHOSP that have the OVN Octavia driver disabled also use the Amphora driver. They are subject to the same resource concerns as earlier versions of RHOSP.
Octavia RHOSP versions before 13.0.13 do not support UDP listeners. Therefore, OpenShift Container Platform UDP services are not supported.
Octavia RHOSP versions before 13.0.13 cannot listen to multiple protocols on the same port. Services that expose the same port to different protocols, like TCP and UDP, are not supported.
There are limitations when using Kuryr SDN that depend on your deployment environment.
Because of Octavia’s lack of support for the UDP protocol and multiple listeners, if the RHOSP version is earlier than 13.0.13, Kuryr forces pods to use TCP for DNS resolution.
In Go versions 1.12 and earlier, applications that are compiled with CGO support disabled use UDP only. In this case,
the native Go resolver does not recognize the use-vc option in resolv.conf, which controls whether TCP is forced for DNS resolution.
As a result, UDP is still used for DNS resolution, which fails.
To ensure that TCP forcing is allowed, compile applications either with the environment variable CGO_ENABLED set to 1, i.e. CGO_ENABLED=1, or ensure that the variable is absent.
In Go versions 1.13 and later, TCP is used automatically if DNS resolution using UDP fails.
|
musl-based containers, including Alpine-based containers, do not support the |
As a result of the RHOSP upgrade process, the Octavia API might be changed, and upgrades to the Amphora images that are used for load balancers might be required.
You can address API changes on an individual basis.
If the Amphora image is upgraded, the RHOSP operator can handle existing load balancer VMs in two ways:
Upgrade each VM by triggering a load balancer failover.
Leave responsibility for upgrading the VMs to users.
If the operator takes the first option, there might be short downtimes during failovers.
If the operator takes the second option, the existing load balancers will not support upgraded Octavia API features, like UDP listeners. In this case, users must recreate their Services to use these features.
|
If OpenShift Container Platform detects a new Octavia version that supports UDP load balancing, it recreates the DNS service automatically. The service recreation ensures that the service default supports UDP load balancing. The recreation causes the DNS service approximately one minute of downtime. |
By default, the OpenShift Container Platform installation process stands up three control plane and three compute machines.
Each machine requires:
An instance from the RHOSP quota
A port from the RHOSP quota
A flavor with at least 16 GB memory, 4 vCPUs, and 25 GB storage space
|
Compute machines host the applications that you run on OpenShift Container Platform; aim to run as many as you can. |
During installation, a bootstrap machine is temporarily provisioned to stand up the control plane. After the production control plane is ready, the bootstrap machine is deprovisioned.
The bootstrap machine requires:
An instance from the RHOSP quota
A port from the RHOSP quota
A flavor with at least 16 GB memory, 4 vCPUs, and 25 GB storage space
In OpenShift Container Platform 4.9, you require access to the internet to install your cluster.
You must have internet access to:
Access the Red Hat OpenShift Cluster Manager page to download the installation program and perform subscription management. If the cluster has internet access and you do not disable Telemetry, that service automatically entitles your cluster.
Access Quay.io to obtain the packages that are required to install your cluster.
Obtain the packages that are required to perform cluster updates.
|
If your cluster cannot have direct internet access, you can perform a restricted network installation on some types of infrastructure that you provision. During that process, you download the required content and use it to populate a mirror registry with the installation packages. With some installation types, the environment that you install your cluster in will not require internet access. Before you update the cluster, you update the content of the mirror registry. |
Swift is operated by a user account with the swiftoperator role. Add the role to an account before you run the installation program.
|
If the Red Hat OpenStack Platform (RHOSP) object storage service, commonly known as Swift, is available, OpenShift Container Platform uses it as the image registry storage. If it is unavailable, the installation program relies on the RHOSP block storage service, commonly known as Cinder. If Swift is present and you want to use it, you must enable access to it. If it is not present, or if you do not want to use it, skip this section. |
You have a RHOSP administrator account on the target environment.
The Swift service is installed.
On Ceph RGW, the account in url option is enabled.
To enable Swift on RHOSP:
As an administrator in the RHOSP CLI, add the swiftoperator role to the account that will access Swift:
$ openstack role add --user <user> --project <project> swiftoperatorYour RHOSP deployment can now use Swift for the image registry.
The OpenShift Container Platform installation process requires external network access. You must provide an external network value to it, or deployment fails. Before you begin the process, verify that a network with the external router type exists in Red Hat OpenStack Platform (RHOSP).
Using the RHOSP CLI, verify the name and ID of the 'External' network:
$ openstack network list --long -c ID -c Name -c "Router Type"+--------------------------------------+----------------+-------------+
| ID | Name | Router Type |
+--------------------------------------+----------------+-------------+
| 148a8023-62a7-4672-b018-003462f8d7dc | public_network | External |
+--------------------------------------+----------------+-------------+A network with an external router type appears in the network list. If at least one does not, see Creating a default floating IP network and Creating a default provider network.
|
If the external network’s CIDR range overlaps one of the default network ranges, you must change the matching network ranges in the The default network ranges are:
|
| If the installation program finds multiple networks with the same name, it sets one of them at random. To avoid this behavior, create unique names for resources in RHOSP. |
|
If the Neutron trunk service plug-in is enabled, a trunk port is created by default. For more information, see Neutron trunk port. |
The OpenShift Container Platform installation program relies on a file that is called clouds.yaml. The file describes Red Hat OpenStack Platform (RHOSP) configuration parameters, including the project name, log in information, and authorization service URLs.
Create the clouds.yaml file:
If your RHOSP distribution includes the Horizon web UI, generate a clouds.yaml file in it.
|
Remember to add a password to the |
If your RHOSP distribution does not include the Horizon web UI, or you do not want to use Horizon, create the file yourself. For detailed information about clouds.yaml, see Config files in the RHOSP documentation.
clouds:
shiftstack:
auth:
auth_url: http://10.10.14.42:5000/v3
project_name: shiftstack
username: shiftstack_user
password: XXX
user_domain_name: Default
project_domain_name: Default
dev-env:
region_name: RegionOne
auth:
username: 'devuser'
password: XXX
project_name: 'devonly'
auth_url: 'https://10.10.14.22:5001/v2.0'If your RHOSP installation uses self-signed certificate authority (CA) certificates for endpoint authentication:
Copy the certificate authority file to your machine.
Add the cacerts key to the clouds.yaml file. The value must be an absolute, non-root-accessible path to the CA certificate:
clouds:
shiftstack:
...
cacert: "/etc/pki/ca-trust/source/anchors/ca.crt.pem"|
After you run the installer with a custom CA certificate, you can update the certificate by editing the value of the |
Place the clouds.yaml file in one of the following locations:
The value of the OS_CLIENT_CONFIG_FILE environment variable
The current directory
A Unix-specific user configuration directory, for example ~/.config/openstack/clouds.yaml
A Unix-specific site configuration directory, for example /etc/openstack/clouds.yaml
The installation program searches for clouds.yaml in that order.
Optionally, you can edit the cloud provider configuration for your cluster. The cloud provider configuration controls how OpenShift Container Platform interacts with Red Hat OpenStack Platform (RHOSP).
For a complete list of cloud provider configuration parameters, see the cloud.conf specification.
If you have not already generated manifest files for your cluster, generate them by running the following command:
$ openshift-install --dir <destination_directory> create manifestsIn a text editor, open the cloud-provider configuration manifest file. For example:
$ vi openshift/manifests/cloud-provider-config.yamlModify the options based on the cloud.conf specification.
Configuring Octavia for load balancing is a common case. For example:
#...
[LoadBalancer]
use-octavia=true (1)
lb-provider = "amphora" (2)
floating-network-id="d3deb660-4190-40a3-91f1-37326fe6ec4a"(3)
#...| 1 | This property enables Octavia integration. |
| 2 | This property sets the Octavia provider that your load balancer uses. It accepts "ovn" or "amphora" as values. If you choose to use OVN, you must also set lb-method to SOURCE_IP_PORT. |
| 3 | This property is required if you want to use multiple external networks with your cluster. The cloud provider creates floating IP addresses on the network that is specified here. |
|
Prior to saving your changes, verify that the file is structured correctly. Clusters might fail if properties are not placed in the appropriate section. |
Save the changes to the file and proceed with installation.
|
You can update your cloud provider configuration after you run the installer. On a command line, run: After you save your changes, your cluster will take some time to reconfigure itself. The process is complete if none of your nodes have a |
Before you install OpenShift Container Platform, download the installation file on a local computer.
You have a computer that runs Linux or macOS, with 500 MB of local disk space
Access the Infrastructure Provider page on the Red Hat OpenShift Cluster Manager site. If you have a Red Hat account, log in with your credentials. If you do not, create an account.
Select your infrastructure provider.
Navigate to the page for your installation type, download the installation program for your operating system, and place the file in the directory where you will store the installation configuration files.
|
The installation program creates several files on the computer that you use to install your cluster. You must keep the installation program and the files that the installation program creates after you finish installing the cluster. Both files are required to delete the cluster. |
|
Deleting the files created by the installation program does not remove your cluster, even if the cluster failed during installation. To remove your cluster, complete the OpenShift Container Platform uninstallation procedures for your specific cloud provider. |
Extract the installation program. For example, on a computer that uses a Linux operating system, run the following command:
$ tar -xvf openshift-install-linux.tar.gzFrom the Pull Secret page on the Red Hat OpenShift Cluster Manager site, download your installation pull secret. This pull secret allows you to authenticate with the services that are provided by the included authorities, including Quay.io, which serves the container images for OpenShift Container Platform components.
You can customize the OpenShift Container Platform cluster you install on Red Hat OpenStack Platform (RHOSP).
Obtain the OpenShift Container Platform installation program and the pull secret for your cluster.
Obtain service principal permissions at the subscription level.
Create the install-config.yaml file.
Change to the directory that contains the installation program and run the following command:
$ ./openshift-install create install-config --dir=<installation_directory> (1)| 1 | For <installation_directory>, specify the directory name to store the
files that the installation program creates. |
|
Specify an empty directory. Some installation assets, like bootstrap X.509 certificates have short expiration intervals, so you must not reuse an installation directory. If you want to reuse individual files from another cluster installation, you can copy them into your directory. However, the file names for the installation assets might change between releases. Use caution when copying installation files from an earlier OpenShift Container Platform version. |
At the prompts, provide the configuration details for your cloud:
Optional: Select an SSH key to use to access 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 |
Select openstack as the platform to target.
Specify the Red Hat OpenStack Platform (RHOSP) external network name to use for installing the cluster.
Specify the floating IP address to use for external access to the OpenShift API.
Specify a RHOSP flavor with at least 16 GB RAM to use for control plane and compute nodes.
Select the base domain to deploy the cluster to. All DNS records will be sub-domains of this base and will also include the cluster name.
Enter a name for your cluster. The name must be 14 or fewer characters long.
Paste the pull secret that you obtained from the Pull Secret page on the Red Hat OpenShift Cluster Manager site.
Modify the install-config.yaml file. You can find more information about
the available parameters in the "Installation configuration parameters" section.
Back up the install-config.yaml file so that you can use
it to install multiple clusters.
|
The |
Production environments can deny direct access to the internet and instead have
an HTTP or HTTPS proxy available. You can configure a new OpenShift Container Platform
cluster to use a proxy by configuring the proxy settings in the
install-config.yaml file.
|
Kuryr installations default to HTTP proxies. |
For Kuryr installations on restricted networks that use the Proxy object, the proxy must be able to reply to the router that the cluster uses. To add a static route for the proxy configuration, from a command line as the root user, enter:
$ ip route add <cluster_network_cidr> via <installer_subnet_gateway>The restricted subnet must have a gateway that is defined and available to be linked to the Router resource that Kuryr creates.
You have an existing install-config.yaml file.
You reviewed the sites that your cluster requires access to and determined whether any of them need to bypass the proxy. By default, all cluster egress traffic is proxied, including calls to hosting cloud provider APIs. You added sites to the Proxy object’s spec.noProxy field to bypass the proxy if necessary.
|
The For installations on Amazon Web Services (AWS), Google Cloud Platform (GCP), Microsoft Azure, and Red Hat OpenStack Platform (RHOSP), the |
If your cluster is on AWS, you added the ec2.<region>.amazonaws.com, elasticloadbalancing.<region>.amazonaws.com, and s3.<region>.amazonaws.com endpoints to your VPC endpoint. These endpoints are required to complete requests from the nodes to the AWS EC2 API. Because the proxy works on the container level, not the node level, you must route these requests to the AWS EC2 API through the AWS private network. Adding the public IP address of the EC2 API to your allowlist in your proxy server is not sufficient.
Edit your install-config.yaml file and add the proxy settings. For example:
apiVersion: v1
baseDomain: my.domain.com
proxy:
httpProxy: http://<username>:<pswd>@<ip>:<port> (1)
httpsProxy: https://<username>:<pswd>@<ip>:<port> (2)
noProxy: example.com (3)
additionalTrustBundle: | (4)
-----BEGIN CERTIFICATE-----
<MY_TRUSTED_CA_CERT>
-----END CERTIFICATE-----
...| 1 | A proxy URL to use for creating HTTP connections outside the cluster. The
URL scheme must be http. If you use an MITM transparent proxy network that does not require additional proxy configuration but requires additional CAs, you must not specify an httpProxy value. |
| 2 | A proxy URL to use for creating HTTPS connections outside the cluster. If you use an MITM transparent proxy network that does not require additional proxy configuration but requires additional CAs, you must not specify an httpsProxy value. |
| 3 | A comma-separated list of destination domain names, IP addresses, or
other network CIDRs to exclude from proxying. Preface a domain with . to match subdomains only. For example, .y.com matches x.y.com, but not y.com. Use * to bypass the proxy for all destinations. |
| 4 | If provided, the installation program generates a config map that is named user-ca-bundle in
the openshift-config namespace to hold the additional CA
certificates. If you provide additionalTrustBundle and at least one proxy setting, the Proxy object is configured to reference the user-ca-bundle config map in the trustedCA field. The Cluster Network
Operator then creates a trusted-ca-bundle config map that merges the contents specified for the trustedCA parameter
with the RHCOS trust bundle. The additionalTrustBundle field is required unless
the proxy’s identity certificate is signed by an authority from the RHCOS trust
bundle.
If you use an MITM transparent proxy network that does not require additional proxy configuration but requires additional CAs, you must provide the MITM CA certificate. |
|
The installation program does not support the proxy |
Save the file and reference it when installing OpenShift Container Platform.
The installation program creates a cluster-wide proxy that is named cluster that uses the proxy
settings in the provided install-config.yaml file. If no proxy settings are
provided, a cluster Proxy object is still created, but it will have a nil
spec.
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Only the |
Before you deploy an OpenShift Container Platform cluster, you provide parameter values to describe your account on the cloud platform that hosts your cluster and optionally customize your cluster’s platform. When you create the install-config.yaml installation configuration file, you provide values for the required parameters through the command line. If you customize your cluster, you can modify the install-config.yaml file to provide more details about the platform.
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After installation, you cannot modify these parameters in the |
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The |
Required installation configuration parameters are described in the following table:
| Parameter | Description | Values |
|---|---|---|
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The API version for the |
String |
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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 |
A fully-qualified domain or subdomain name, such as |
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Kubernetes resource |
Object |
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The name of the cluster. DNS records for the cluster are all subdomains of |
String of lowercase letters, hyphens ( |
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The configuration for the specific platform upon which to perform the installation: |
Object |
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Get a pull secret from https://console.redhat.com/openshift/install/pull-secret to authenticate downloading container images for OpenShift Container Platform components from services such as Quay.io. |
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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.
| Parameter | Description | Values | ||
|---|---|---|---|---|
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The configuration for the cluster network. |
Object
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The cluster network provider Container Network Interface (CNI) plug-in to install. |
Either |
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The IP address blocks for pods. The default value is If you specify multiple IP address blocks, the blocks must not overlap. |
An array of objects. For example: |
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Required if you use An IPv4 network. |
An IP address block in Classless Inter-Domain Routing (CIDR) notation.
The prefix length for an IPv4 block is between |
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The subnet prefix length to assign to each individual node. For example, if |
A subnet prefix. The default value is |
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The IP address block for services. The default value is The OpenShift SDN and OVN-Kubernetes network providers support only a single IP address block for the service network. |
An array with an IP address block in CIDR format. For example: |
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The IP address blocks for machines. If you specify multiple IP address blocks, the blocks must not overlap. |
An array of objects. For example: |
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Required if you use |
An IP network block in CIDR notation. For example,
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Optional installation configuration parameters are described in the following table:
| Parameter | Description | Values | ||||
|---|---|---|---|---|---|---|
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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 |
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The configuration for the machines that comprise the compute nodes. |
Array of |
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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 |
String |
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Whether to enable or disable simultaneous multithreading, or
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Required if you use |
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Required if you use |
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The number of compute machines, which are also known as worker machines, to provision. |
A positive integer greater than or equal to |
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The configuration for the machines that comprise the control plane. |
Array of |
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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 |
String |
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Whether to enable or disable simultaneous multithreading, or
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Required if you use |
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Required if you use |
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The number of control plane machines to provision. |
The only supported value is |
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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.
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Enable or disable FIPS mode. The default is
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Sources and repositories for the release-image content. |
Array of objects. Includes a |
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Required if you use |
String |
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Specify one or more repositories that may also contain the same images. |
Array of strings |
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How to publish or expose the user-facing endpoints of your cluster, such as the Kubernetes API, OpenShift routes. |
Setting this field to |
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The SSH key or keys to authenticate access your cluster machines.
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One or more keys. For example: |
Additional RHOSP configuration parameters are described in the following table:
| Parameter | Description | Values |
|---|---|---|
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For compute machines, the size in gigabytes of the root volume. If you do not set this value, machines use ephemeral storage. |
Integer, for example |
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For compute machines, the root volume’s type. |
String, for example |
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For control plane machines, the size in gigabytes of the root volume. If you do not set this value, machines use ephemeral storage. |
Integer, for example |
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For control plane machines, the root volume’s type. |
String, for example |
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The name of the RHOSP cloud to use from the list of clouds in the
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String, for example |
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The RHOSP external network name to be used for installation. |
String, for example |
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The RHOSP flavor to use for control plane and compute machines. This property is deprecated. To use a flavor as the default for all machine pools, add it as the value of the |
String, for example |
Optional RHOSP configuration parameters are described in the following table:
| Parameter | Description | Values |
|---|---|---|
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Additional networks that are associated with compute machines. Allowed address pairs are not created for additional networks. |
A list of one or more UUIDs as strings. For example, |
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Additional security groups that are associated with compute machines. |
A list of one or more UUIDs as strings. For example, |
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RHOSP Compute (Nova) availability zones (AZs) to install machines on. If this parameter is not set, the installer relies on the default settings for Nova that the RHOSP administrator configured. On clusters that use Kuryr, RHOSP Octavia does not support availability zones. Load balancers and, if you are using the Amphora provider driver, OpenShift Container Platform services that rely on Amphora VMs, are not created according to the value of this property. |
A list of strings. For example, |
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For compute machines, the availability zone to install root volumes on. If you do not set a value for this parameter, the installer selects the default availability zone. |
A list of strings, for example |
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Additional networks that are associated with control plane machines. Allowed address pairs are not created for additional networks. |
A list of one or more UUIDs as strings. For example, |
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Additional security groups that are associated with control plane machines. |
A list of one or more UUIDs as strings. For example, |
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RHOSP Compute (Nova) availability zones (AZs) to install machines on. If this parameter is not set, the installer relies on the default settings for Nova that the RHOSP administrator configured. On clusters that use Kuryr, RHOSP Octavia does not support availability zones. Load balancers and, if you are using the Amphora provider driver, OpenShift Container Platform services that rely on Amphora VMs, are not created according to the value of this property. |
A list of strings. For example, |
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For control plane machines, the availability zone to install root volumes on. If you do not set this value, the installer selects the default availability zone. |
A list of strings, for example |
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The location from which the installer downloads the RHCOS image. You must set this parameter to perform an installation in a restricted network. |
An HTTP or HTTPS URL, optionally with an SHA-256 checksum. For example, |
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Properties to add to the installer-uploaded ClusterOSImage in Glance. This property is ignored if You can use this property to exceed the default persistent volume (PV) limit for RHOSP of 26 PVs per node. To exceed the limit, set the You can also use this property to enable the QEMU guest agent by including the |
A list of key-value string pairs. For example, |
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The default machine pool platform configuration. |
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An existing floating IP address to associate with the Ingress port. To use this property, you must also define the |
An IP address, for example |
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An existing floating IP address to associate with the API load balancer. To use this property, you must also define the |
An IP address, for example |
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IP addresses for external DNS servers that cluster instances use for DNS resolution. |
A list of IP addresses as strings. For example, |
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The UUID of a RHOSP subnet that the cluster’s nodes use. Nodes and virtual IP (VIP) ports are created on this subnet. The first item in If you deploy to a custom subnet, you cannot specify an external DNS server to the OpenShift Container Platform installer. Instead, add DNS to the subnet in RHOSP. |
A UUID as a string. For example, |
Optionally, you can deploy a cluster on a Red Hat OpenStack Platform (RHOSP) subnet of your choice. The subnet’s GUID is passed as the value of platform.openstack.machinesSubnet in the install-config.yaml file.
This subnet is used as the cluster’s primary subnet. By default, nodes and ports are created on it. You can create nodes and ports on a different RHOSP subnet by setting the value of the platform.openstack.machinesSubnet property to the subnet’s UUID.
Before you run the OpenShift Container Platform installer with a custom subnet, verify that your configuration meets the following requirements:
The subnet that is used by platform.openstack.machinesSubnet has DHCP enabled.
The CIDR of platform.openstack.machinesSubnet matches the CIDR of networking.machineNetwork.
The installation program user has permission to create ports on this network, including ports with fixed IP addresses.
Clusters that use custom subnets have the following limitations:
If you plan to install a cluster that uses floating IP addresses, the platform.openstack.machinesSubnet subnet must be attached to a router that is connected to the externalNetwork network.
If the platform.openstack.machinesSubnet value is set in the install-config.yaml file, the installation program does not create a private network or subnet for your RHOSP machines.
You cannot use the platform.openstack.externalDNS property at the same time as a custom subnet. To add DNS to a cluster that uses a custom subnet, configure DNS on the RHOSP network.
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By default, the API VIP takes x.x.x.5 and the Ingress VIP takes x.x.x.7 from your network’s CIDR block. To override these default values,
set values for |
install-config.yaml file for RHOSP with KuryrTo deploy with Kuryr SDN instead of the default OpenShift SDN, you must
modify the install-config.yaml file to include Kuryr as the desired
networking.networkType and proceed with the default OpenShift Container Platform SDN installation steps.
This sample install-config.yaml demonstrates all of the possible
Red Hat OpenStack Platform (RHOSP) customization options.
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This sample file is provided for reference only. You must obtain your
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apiVersion: v1
baseDomain: example.com
controlPlane:
name: master
platform: {}
replicas: 3
compute:
- name: worker
platform:
openstack:
type: ml.large
replicas: 3
metadata:
name: example
networking:
clusterNetwork:
- cidr: 10.128.0.0/14
hostPrefix: 23
machineNetwork:
- cidr: 10.0.0.0/16
serviceNetwork:
- 172.30.0.0/16 (1)
networkType: Kuryr
platform:
openstack:
cloud: mycloud
externalNetwork: external
computeFlavor: m1.xlarge
apiFloatingIP: 128.0.0.1
trunkSupport: true (2)
octaviaSupport: true (2)
pullSecret: '{"auths": ...}'
sshKey: ssh-ed25519 AAAA...| 1 | The Amphora Octavia driver creates two ports per load balancer. As a
result, the service subnet that the installer creates is twice the size of the
CIDR that is specified as the value of the serviceNetwork property. The larger range is
required to prevent IP address conflicts. |
| 2 | Both trunkSupport and octaviaSupport are automatically discovered by the
installer, so there is no need to set them. But if your environment does not
meet both requirements, Kuryr SDN will not properly work. Trunks are needed
to connect the pods to the RHOSP network and Octavia is required to create the
OpenShift Container Platform services. |
You can deploy your OpenShift Container Platform clusters on Red Hat OpenStack Platform (RHOSP) with a primary network interface on a provider network. Provider networks are commonly used to give projects direct access to a public network that can be used to reach the internet. You can also share provider networks among projects as part of the network creation process.
RHOSP provider networks map directly to an existing physical network in the data center. A RHOSP administrator must create them.
In the following example, OpenShift Container Platform workloads are connected to a data center by using a provider network: