Chapter 22. Clusters at the network far edge

Procedure

1. Log in to the mirror host.

2. Obtain the RHCOS ISO and RootFS images from mirror.openshift.com, for example:

   1. Export the required image names and OpenShift Container Platform version as environment variables:

      $ export ISO_IMAGE_NAME=<iso_image_name> 1

      $ export ROOTFS_IMAGE_NAME=<rootfs_image_name> 1

      $ export OCP_VERSION=<ocp_version> 1

      1

      ISO image name, for example, rhcos-4.11.1-x86_64-live.x86_64.iso

      1

      RootFS image name, for example, rhcos-4.11.1-x86_64-live-rootfs.x86_64.img

      1

      OpenShift Container Platform version, for example, 4.11.1

   2. Download the required images:

      $ sudo wget https://mirror.openshift.com/pub/openshift-v4/dependencies/rhcos/4.11/${OCP_VERSION}/${ISO_IMAGE_NAME} -O /var/www/html/${ISO_IMAGE_NAME}

      $ sudo wget https://mirror.openshift.com/pub/openshift-v4/dependencies/rhcos/4.11/${OCP_VERSION}/${ROOTFS_IMAGE_NAME} -O /var/www/html/${ROOTFS_IMAGE_NAME}

Procedure

1. Update the AgentServiceConfig CR by running the following command:

   $ oc edit AgentServiceConfig

2. Add the following entry to the items.spec.osImages field in the CR:

   - cpuArchitecture: x86_64
       openshiftVersion: "4.11"
       rootFSUrl: https://<host>/<path>/rhcos-live-rootfs.x86_64.img
       url: https://<mirror-registry>/<path>/rhcos-live.x86_64.iso

   where:

   <host>

   Is the fully qualified domain name (FQDN) for the target mirror registry HTTP server.

   <path>

   Is the path to the image on the target mirror registry.

   Save and quit the editor to apply the changes.

Procedure

1. Create a ConfigMap containing the mirror registry config:

   apiVersion: v1
   kind: ConfigMap
   metadata:
     name: assisted-installer-mirror-config
     namespace: assisted-installer
     labels:
       app: assisted-service
   data:
     ca-bundle.crt: <certificate> 1
     registries.conf: |  2
       unqualified-search-registries = ["registry.access.redhat.com", "docker.io"]
   
       [[registry]]
         location = <mirror_registry_url>  3
         insecure = false
         mirror-by-digest-only = true

   1

   The mirror registry’s certificate used when creating the mirror registry.

   2

   The configuration for the mirror registry.

   3

   The URL of the mirror registry.

   This updates mirrorRegistryRef in the AgentServiceConfig custom resource, as shown below:

   Example output

   apiVersion: agent-install.openshift.io/v1beta1
   kind: AgentServiceConfig
   metadata:
     name: agent
   spec:
     databaseStorage:
       volumeName: <db_pv_name>
       accessModes:
       - ReadWriteOnce
       resources:
         requests:
           storage: <db_storage_size>
     filesystemStorage:
       volumeName: <fs_pv_name>
       accessModes:
       - ReadWriteOnce
       resources:
         requests:
           storage: <fs_storage_size>
     mirrorRegistryRef:
       name: 'assisted-installer-mirror-config'
     osImages:
       - openshiftVersion: <ocp_version>
         rootfs: <rootfs_url> 1
         url: <iso_url> 2

   1 2

   Must match the URLs of the HTTPD server.

Procedure

1. Prepare the ArgoCD pipeline configuration:

   1. Create a Git repository with the directory structure similar to the example directory. For more information, see "Preparing the GitOps ZTP site configuration repository".

   2. Configure access to the repository using the ArgoCD UI. Under Settings configure the following:

      • Repositories - Add the connection information. The URL must end in .git, for example, https://repo.example.com/repo.git and credentials.
      • Certificates - Add the public certificate for the repository, if needed.

   3. Modify the two ArgoCD applications, out/argocd/deployment/clusters-app.yaml and out/argocd/deployment/policies-app.yaml, based on your Git repository:

      • Update the URL to point to the Git repository. The URL ends with .git, for example, https://repo.example.com/repo.git.
      • The targetRevision indicates which Git repository branch to monitor.
      • path specifies the path to the SiteConfig and PolicyGenTemplate CRs, respectively.

2. To install the ZTP GitOps plugin you must patch the ArgoCD instance in the hub cluster by using the patch file previously extracted into the out/argocd/deployment/ directory. Run the following command:

   $ oc patch argocd openshift-gitops \
   -n openshift-gitops --type=merge \
   --patch-file out/argocd/deployment/argocd-openshift-gitops-patch.json

3. Apply the pipeline configuration to your hub cluster by using the following command:

   $ oc apply -k out/argocd/deployment

Procedure

1. Create a directory structure with separate paths for the SiteConfig and PolicyGenTemplate CRs.

2. Export the argocd directory from the ztp-site-generate container image using the following commands:

   $ podman pull registry.redhat.io/openshift4/ztp-site-generate-rhel8:v4.11

   $ mkdir -p ./out

   $ podman run --log-driver=none --rm registry.redhat.io/openshift4/ztp-site-generate-rhel8:v4.11 extract /home/ztp --tar | tar x -C ./out

3. Check that the out directory contains the following subdirectories:

   • out/extra-manifest contains the source CR files that SiteConfig uses to generate extra manifest configMap.
   • out/source-crs contains the source CR files that PolicyGenTemplate uses to generate the Red Hat Advanced Cluster Management (RHACM) policies.
   • out/argocd/deployment contains patches and YAML files to apply on the hub cluster for use in the next step of this procedure.
   • out/argocd/example contains the examples for SiteConfig and PolicyGenTemplate files that represent the recommended configuration.

1. A Discovery image ISO file is generated and booted on the target host.
2. When the ISO file successfully boots on the target host it reports the host hardware information to RHACM.
3. After all hosts are discovered, OpenShift Container Platform is installed.
4. When OpenShift Container Platform finishes installing, the hub installs the klusterlet service on the target cluster.
5. The requested add-on services are installed on the target cluster.

Procedure

1. Create a YAML secret file containing credentials for the host Baseboard Management Controller (BMC) and a pull secret required for installing OpenShift and all add-on cluster Operators:

   1. Save the following YAML as the file example-sno-secret.yaml:

      apiVersion: v1
      kind: Secret
      metadata:
        name: example-sno-bmc-secret
        namespace: example-sno 1
      data: 2
        password: <base64_password>
        username: <base64_username>
      type: Opaque
      ---
      apiVersion: v1
      kind: Secret
      metadata:
        name: pull-secret
        namespace: example-sno  3
      data:
        .dockerconfigjson: <pull_secret> 4
      type: kubernetes.io/dockerconfigjson

      1

      Must match the namespace configured in the related SiteConfig CR

      2

      Base64-encoded values for password and username

      3

      Must match the namespace configured in the related SiteConfig CR

      4

      Base64-encoded pull secret

2. Add the relative path to example-sno-secret.yaml to the kustomization.yaml file that you use to install the cluster.

Procedure

1. Create the required managed cluster secrets on the hub cluster. These resources must be in a namespace with a name matching the cluster name. For example, in out/argocd/example/siteconfig/example-sno.yaml, the cluster name and namespace is example-sno.

   1. Export the cluster namespace by running the following command:

      $ export CLUSTERNS=example-sno

   2. Create the namespace:

      $ oc create namespace $CLUSTERNS

2. Create pull secret and BMC Secret CRs for the managed cluster. The pull secret must contain all the credentials necessary for installing OpenShift Container Platform and all required Operators. See "Creating the managed bare-metal host secrets" for more information.

   Note

   The secrets are referenced from the SiteConfig custom resource (CR) by name. The namespace must match the SiteConfig namespace.

3. Create a SiteConfig CR for your cluster in your local clone of the Git repository:

   1. Choose the appropriate example for your CR from the out/argocd/example/siteconfig/ folder. The folder includes example files for single node, three-node, and standard clusters:

      • example-sno.yaml
      • example-3node.yaml
      • example-standard.yaml

   2. Change the cluster and host details in the example file to match the type of cluster you want. For example:

      Example single-node OpenShift cluster SiteConfig CR

      apiVersion: ran.openshift.io/v1
      kind: SiteConfig
      metadata:
        name: "<site_name>"
        namespace: "<site_name>"
      spec:
        baseDomain: "example.com"
        pullSecretRef:
          name: "assisted-deployment-pull-secret" 1
        clusterImageSetNameRef: "openshift-4.11" 2
        sshPublicKey: "ssh-rsa AAAA..." 3
        clusters:
        - clusterName: "<site_name>"
          networkType: "OVNKubernetes"
          clusterLabels: 4
            common: true
            group-du-sno: ""
            sites : "<site_name>"
          clusterNetwork:
            - cidr: 1001:1::/48
              hostPrefix: 64
          machineNetwork:
            - cidr: 1111:2222:3333:4444::/64
          serviceNetwork:
            - 1001:2::/112
          additionalNTPSources:
            - 1111:2222:3333:4444::2
          #crTemplates:
          #  KlusterletAddonConfig: "KlusterletAddonConfigOverride.yaml" 5
          nodes:
            - hostName: "example-node.example.com" 6
              role: "master"
              bmcAddress: idrac-virtualmedia://<out_of_band_ip>/<system_id>/ 7
              bmcCredentialsName:
                name: "bmh-secret" 8
              bootMACAddress: "AA:BB:CC:DD:EE:11"
              bootMode: "UEFI" 9
              rootDeviceHints:
                wwn: "0x11111000000asd123"
              cpuset: "0-1,52-53"  10
              nodeNetwork: 11
                interfaces:
                  - name: eno1
                    macAddress: "AA:BB:CC:DD:EE:11"
                config:
                  interfaces:
                    - name: eno1
                      type: ethernet
                      state: up
                      ipv4:
                        enabled: false
                      ipv6: 12
                        enabled: true
                        address:
                        - ip: 1111:2222:3333:4444::aaaa:1
                          prefix-length: 64
                  dns-resolver:
                    config:
                      search:
                      - example.com
                      server:
                      - 1111:2222:3333:4444::2
                  routes:
                    config:
                    - destination: ::/0
                      next-hop-interface: eno1
                      next-hop-address: 1111:2222:3333:4444::1
                      table-id: 254

      1

      Create the assisted-deployment-pull-secret CR with the same namespace as the SiteConfig CR.

      2

      clusterImageSetNameRef defines an image set available on the hub cluster. To see the list of supported versions on your hub cluster, run oc get clusterimagesets.

      3

      Configure the SSH public key used to access the cluster.

      4

      Cluster labels must correspond to the bindingRules field in the PolicyGenTemplate CRs that you define. For example, policygentemplates/common-ranGen.yaml applies to all clusters with common: true set, policygentemplates/group-du-sno-ranGen.yaml applies to all clusters with group-du-sno: "" set.

      5

      Optional. The CR specifed under KlusterletAddonConfig is used to override the default KlusterletAddonConfig that is created for the cluster.

      6

      For single-node deployments, define a single host. For three-node deployments, define three hosts. For standard deployments, define three hosts with role: master and two or more hosts defined with role: worker.

      7

      BMC address that you use to access the host. Applies to all cluster types.

      8

      Name of the bmh-secret CR that you separately create with the host BMC credentials. When creating the bmh-secret CR, use the same namespace as the SiteConfig CR that provisions the host.

      9

      Configures the boot mode for the host. The default value is UEFI. Use UEFISecureBoot to enable secure boot on the host.

      10

      cpuset must match the value set in the cluster PerformanceProfile CR spec.cpu.reserved field for workload partitioning.

      11

      Specifies the network settings for the node.

      12

      Configures the IPv6 address for the host. For single-node OpenShift clusters with static IP addresses, the node-specific API and Ingress IPs should be the same.

      Note

      For more information about BMC addressing, see the "Additional resources" section.

   3. You can inspect the default set of extra-manifest MachineConfig CRs in out/argocd/extra-manifest. It is automatically applied to the cluster when it is installed.
   4. Optional: To provision additional install-time manifests on the provisioned cluster, create a directory in your Git repository, for example, sno-extra-manifest/, and add your custom manifest CRs to this directory. If your SiteConfig.yaml refers to this directory in the extraManifestPath field, any CRs in this referenced directory are appended to the default set of extra manifests.
4. Add the SiteConfig CR to the kustomization.yaml file in the generators section, similar to the example shown in out/argocd/example/siteconfig/kustomization.yaml.

5. Commit the SiteConfig CR and associated kustomization.yaml changes in your Git repository and push the changes.

   The ArgoCD pipeline detects the changes and begins the managed cluster deployment.

1. The Assisted Service Operator installs OpenShift Container Platform on the cluster. You can monitor the progress of cluster installation from the RHACM dashboard or from the command line by running the following commands:

   1. Export the cluster name:

      $ export CLUSTER=<clusterName>

   2. Query the AgentClusterInstall CR for the managed cluster:

      $ oc get agentclusterinstall -n $CLUSTER $CLUSTER -o jsonpath='{.status.conditions[?(@.type=="Completed")]}' | jq

   3. Get the installation events for the cluster:

      $ curl -sk $(oc get agentclusterinstall -n $CLUSTER $CLUSTER -o jsonpath='{.status.debugInfo.eventsURL}')  | jq '.[-2,-1]'

Procedure

1. Check that the installation CRs were created by using the following command:

   $ oc get AgentClusterInstall -n <cluster_name>

   If no object is returned, use the following steps to troubleshoot the ArgoCD pipeline flow from SiteConfig files to the installation CRs.

2. Verify that the ManagedCluster CR was generated using the SiteConfig CR on the hub cluster:

   $ oc get managedcluster

3. If the ManagedCluster is missing, check if the clusters application failed to synchronize the files from the Git repository to the hub cluster:

   $ oc describe -n openshift-gitops application clusters

   1. Check for the Status.Conditions field to view the error logs for the managed cluster. For example, setting an invalid value for extraManifestPath: in the SiteConfig CR raises the following error:

      Status:
        Conditions:
          Last Transition Time:  2021-11-26T17:21:39Z
          Message:               rpc error: code = Unknown desc = `kustomize build /tmp/https___git.com/ran-sites/siteconfigs/ --enable-alpha-plugins` failed exit status 1: 2021/11/26 17:21:40 Error could not create extra-manifest ranSite1.extra-manifest3 stat extra-manifest3: no such file or directory 2021/11/26 17:21:40 Error: could not build the entire SiteConfig defined by /tmp/kust-plugin-config-913473579: stat extra-manifest3: no such file or directory Error: failure in plugin configured via /tmp/kust-plugin-config-913473579; exit status 1: exit status 1
          Type:  ComparisonError

   2. Check the Status.Sync field. If there are log errors, the Status.Sync field could indicate an Unknown error:

      Status:
        Sync:
          Compared To:
            Destination:
              Namespace:  clusters-sub
              Server:     https://kubernetes.default.svc
            Source:
              Path:             sites-config
              Repo URL:         https://git.com/ran-sites/siteconfigs/.git
              Target Revision:  master
          Status:               Unknown

Procedure

1. Disable TLS in the Provisioning resource by running the following command:

   $ oc patch provisioning provisioning-configuration --type merge -p '{"spec":{"disableVirtualMediaTLS": true}}'

2. Continue the steps to deploy your single-node OpenShift cluster.

Procedure

1. Remove a site and the associated CRs by removing the associated SiteConfig and PolicyGenTemplate files from the kustomization.yaml file.

   When you run the ZTP pipeline again, the generated CRs are removed.

2. Optional: If you want to permanently remove a site, you should also remove the SiteConfig and site-specific PolicyGenTemplate files from the Git repository.
3. Optional: If you want to remove a site temporarily, for example when redeploying a site, you can leave the SiteConfig and site-specific PolicyGenTemplate CRs in the Git repository.

Procedure

1. Remove the affected PolicyGenTemplate files from the Git repository, commit and push to the remote repository.
2. Wait for the changes to synchronize through the application and the affected policies to be removed from the hub cluster.

3. Add the updated PolicyGenTemplate files back to the Git repository, and then commit and push to the remote repository.

   Note

   Removing zero touch provisioning (ZTP) policies from the Git repository, and as a result also removing them from the hub cluster, does not affect the configuration of the managed cluster. The policy and CRs managed by that policy remains in place on the managed cluster.

4. Optional: As an alternative, after making changes to PolicyGenTemplate CRs that result in obsolete policies, you can remove these policies from the hub cluster manually. You can delete policies from the RHACM console using the Governance tab or by running the following command:

   $ oc delete policy -n <namespace> <policy_name>

Procedure

1. Detach all clusters from Red Hat Advanced Cluster Management (RHACM) on the hub cluster.

2. Delete the kustomization.yaml file in the deployment directory using the following command:

   $ oc delete -k out/argocd/deployment

3. Commit and push your changes to the site repository.

Procedure

1. Create a PolicyGenTemplate CR for site-specific configuration CRs.

   1. Choose the appropriate example for your CR from the out/argocd/example/policygentemplates folder, for example, example-sno-site.yaml or example-multinode-site.yaml.

   2. Change the bindingRules field in the example file to match the site-specific label included in the SiteConfig CR. In the example SiteConfig file, the site-specific label is sites: example-sno.

      Note

      Ensure that the labels defined in your PolicyGenTemplate bindingRules field correspond to the labels that are defined in the related managed clusters SiteConfig CR.

   3. Change the content in the example file to match the desired configuration.

2. Optional: Create a PolicyGenTemplate CR for any common configuration CRs that apply to the entire fleet of clusters.

   1. Select the appropriate example for your CR from the out/argocd/example/policygentemplates folder, for example, common-ranGen.yaml.
   2. Change the content in the example file to match the desired configuration.

3. Optional: Create a PolicyGenTemplate CR for any group configuration CRs that apply to the certain groups of clusters in the fleet.

   Ensure that the content of the overlaid spec files matches your desired end state. As a reference, the out/source-crs directory contains the full list of source-crs available to be included and overlaid by your PolicyGenTemplate templates.

   Note

   Depending on the specific requirements of your clusters, you might need more than a single group policy per cluster type, especially considering that the example group policies each have a single PerformancePolicy.yaml file that can only be shared across a set of clusters if those clusters consist of identical hardware configurations.

   1. Select the appropriate example for your CR from the out/argocd/example/policygentemplates folder, for example, group-du-sno-ranGen.yaml.
   2. Change the content in the example file to match the desired configuration.
4. Optional. Create a validator inform policy PolicyGenTemplate CR to signal when the ZTP installation and configuration of the deployed cluster is complete. For more information, see "Creating a validator inform policy".

5. Define all the policy namespaces in a YAML file similar to the example out/argocd/example/policygentemplates/ns.yaml file.

   Important

   Do not include the Namespace CR in the same file with the PolicyGenTemplate CR.

6. Add the PolicyGenTemplate CRs and Namespace CR to the kustomization.yaml file in the generators section, similar to the example shown in out/argocd/example/policygentemplates/kustomization.yaml.

7. Commit the PolicyGenTemplate CRs, Namespace CR, and associated kustomization.yaml file in your Git repository and push the changes.

   The ArgoCD pipeline detects the changes and begins the managed cluster deployment. You can push the changes to the SiteConfig CR and the PolicyGenTemplate CR simultaneously.

Procedure

1. The Topology Aware Lifecycle Manager (TALM) applies the configuration policies that are bound to the cluster.

   After the cluster installation is complete and the cluster becomes Ready, a ClusterGroupUpgrade CR corresponding to this cluster, with a list of ordered policies defined by the ran.openshift.io/ztp-deploy-wave annotations, is automatically created by the TALM. The cluster’s policies are applied in the order listed in ClusterGroupUpgrade CR.

   You can monitor the high-level progress of configuration policy reconciliation by using the following commands:

   $ export CLUSTER=<clusterName>

   $ oc get clustergroupupgrades -n ztp-install $CLUSTER -o jsonpath='{.status.conditions[-1:]}' | jq

   Example output

   {
     "lastTransitionTime": "2022-11-09T07:28:09Z",
     "message": "The ClusterGroupUpgrade CR has upgrade policies that are still non compliant",
     "reason": "UpgradeNotCompleted",
     "status": "False",
     "type": "Ready"
   }

2. You can monitor the detailed cluster policy compliance status by using the RHACM dashboard or the command line.

   1. To check policy compliance by using oc, run the following command:

      $ oc get policies -n $CLUSTER

      Example output

      NAME                                                     REMEDIATION ACTION   COMPLIANCE STATE   AGE
      ztp-common.common-config-policy                          inform               Compliant          3h42m
      ztp-common.common-subscriptions-policy                   inform               NonCompliant       3h42m
      ztp-group.group-du-sno-config-policy                     inform               NonCompliant       3h42m
      ztp-group.group-du-sno-validator-du-policy               inform               NonCompliant       3h42m
      ztp-install.example1-common-config-policy-pjz9s          enforce              Compliant          167m
      ztp-install.example1-common-subscriptions-policy-zzd9k   enforce              NonCompliant       164m
      ztp-site.example1-config-policy                          inform               NonCompliant       3h42m
      ztp-site.example1-perf-policy                            inform               NonCompliant       3h42m

   2. To check policy status from the RHACM web console, perform the following actions:

      1. Click Governance Find policies.
      2. Click on a cluster policy to check it’s status.

Procedure

1. To display detailed information about the policies, run the following command:

   $ oc describe -n openshift-gitops application policies

2. Check for Status: Conditions: to show the error logs. For example, setting an invalid sourceFile→fileName: generates the error shown below:

   Status:
     Conditions:
       Last Transition Time:  2021-11-26T17:21:39Z
       Message:               rpc error: code = Unknown desc = `kustomize build /tmp/https___git.com/ran-sites/policies/ --enable-alpha-plugins` failed exit status 1: 2021/11/26 17:21:40 Error could not find test.yaml under source-crs/: no such file or directory Error: failure in plugin configured via /tmp/kust-plugin-config-52463179; exit status 1: exit status 1
       Type:  ComparisonError

3. Check for Status: Sync:. If there are log errors at Status: Conditions:, the Status: Sync: shows Unknown or Error:

   Status:
     Sync:
       Compared To:
         Destination:
           Namespace:  policies-sub
           Server:     https://kubernetes.default.svc
         Source:
           Path:             policies
           Repo URL:         https://git.com/ran-sites/policies/.git
           Target Revision:  master
       Status:               Error

4. When Red Hat Advanced Cluster Management (RHACM) recognizes that policies apply to a ManagedCluster object, the policy CR objects are applied to the cluster namespace. Check to see if the policies were copied to the cluster namespace:

   $ oc get policy -n $CLUSTER

   Example output:

   NAME                                         REMEDIATION ACTION   COMPLIANCE STATE   AGE
   ztp-common.common-config-policy              inform               Compliant          13d
   ztp-common.common-subscriptions-policy       inform               Compliant          13d
   ztp-group.group-du-sno-config-policy         inform               Compliant          13d
   Ztp-group.group-du-sno-validator-du-policy   inform               Compliant          13d
   ztp-site.example-sno-config-policy           inform               Compliant          13d

   RHACM copies all applicable policies into the cluster namespace. The copied policy names have the format: <policyGenTemplate.Namespace>.<policyGenTemplate.Name>-<policyName>.

5. Check the placement rule for any policies not copied to the cluster namespace. The matchSelector in the PlacementRule for those policies should match labels on the ManagedCluster object:

   $ oc get placementrule -n $NS

6. Note the PlacementRule name appropriate for the missing policy, common, group, or site, using the following command:

   $ oc get placementrule -n $NS <placementRuleName> -o yaml

   • The status-decisions should include your cluster name.
   • The key-value pair of the matchSelector in the spec must match the labels on your managed cluster.

7. Check the labels on the ManagedCluster object using the following command:

   $ oc get ManagedCluster $CLUSTER -o jsonpath='{.metadata.labels}' | jq

8. Check to see which policies are compliant using the following command:

   $ oc get policy -n $CLUSTER

   If the Namespace, OperatorGroup, and Subscription policies are compliant but the Operator configuration policies are not, it is likely that the Operators did not install on the managed cluster. This causes the Operator configuration policies to fail to apply because the CRD is not yet applied to the spoke.

Procedure

1. A ClusterGroupUpgrade CR is generated in the namespace ztp-install by the Topology Aware Lifecycle Manager after the managed cluster becomes Ready:

   $ export CLUSTER=<clusterName>

   $ oc get clustergroupupgrades -n ztp-install $CLUSTER

2. If there are unexpected issues and the policies fail to become complaint within the configured timeout (the default is 4 hours), the status of the ClusterGroupUpgrade CR shows UpgradeTimedOut:

   $ oc get clustergroupupgrades -n ztp-install $CLUSTER -o jsonpath='{.status.conditions[?(@.type=="Ready")]}'

3. A ClusterGroupUpgrade CR in the UpgradeTimedOut state automatically restarts its policy reconciliation every hour. If you have changed your policies, you can start a retry immediately by deleting the existing ClusterGroupUpgrade CR. This triggers the automatic creation of a new ClusterGroupUpgrade CR that begins reconciling the policies immediately:

   $ oc delete clustergroupupgrades -n ztp-install $CLUSTER

Procedure

1. Remove the content that you no longer need from the affected CRs. In this example, the disableDrain: false line was removed from the SriovOperatorConfig CR.

   Example CR

   apiVersion: sriovnetwork.openshift.io/v1
   kind: SriovOperatorConfig
   metadata:
     name: default
     namespace: openshift-sriov-network-operator
   spec:
     configDaemonNodeSelector:
       "node-role.kubernetes.io/$mcp": ""
     disableDrain: true
     enableInjector: true
     enableOperatorWebhook: true

2. Change the complianceType of the affected policies to mustonlyhave in the group-du-sno-ranGen.yaml file.

   Example YAML

   # ...
   - fileName: SriovOperatorConfig.yaml
     policyName: "config-policy"
     complianceType: mustonlyhave
   # ...

3. Create a ClusterGroupUpdates CR and specify the clusters that must receive the CR changes::

   Example ClusterGroupUpdates CR

   apiVersion: ran.openshift.io/v1alpha1
   kind: ClusterGroupUpgrade
   metadata:
     name: cgu-remove
     namespace: default
   spec:
     managedPolicies:
       - ztp-group.group-du-sno-config-policy
     enable: false
     clusters:
     - spoke1
     - spoke2
     remediationStrategy:
       maxConcurrency: 2
       timeout: 240
     batchTimeoutAction:

4. Create the ClusterGroupUpgrade CR by running the following command:

   $ oc create -f cgu-remove.yaml

5. When you are ready to apply the changes, for example, during an appropriate maintenance window, change the value of the spec.enable field to true by running the following command:

   $ oc --namespace=default patch clustergroupupgrade.ran.openshift.io/cgu-remove \
   --patch '{"spec":{"enable":true}}' --type=merge

Verification

1. Check the status of the policies by running the following command:

   $ oc get <kind> <changed_cr_name>

   Example output

   NAMESPACE   NAME                                                   REMEDIATION ACTION   COMPLIANCE STATE   AGE
   default     cgu-ztp-group.group-du-sno-config-policy               enforce                                 17m
   default     ztp-group.group-du-sno-config-policy                   inform               NonCompliant       15h

   When the COMPLIANCE STATE of the policy is Compliant, it means that the CR is updated and the unwanted content is removed.

2. Check that the policies are removed from the targeted clusters by running the following command on the managed clusters:

   $ oc get <kind> <changed_cr_name>

   If there are no results, the CR is removed from the managed cluster.

Procedure

1. Create an output folder by running the following command:

   $ mkdir -p ./out

2. Export the argocd directory from the ztp-site-generate container image:

   $ podman run --log-driver=none --rm registry.redhat.io/openshift4/ztp-site-generate-rhel8:v4.11 extract /home/ztp --tar | tar x -C ./out

   The ./out directory has the reference PolicyGenTemplate and SiteConfig CRs in the out/argocd/example/ folder.

   Example output

   out
    └── argocd
         └── example
              ├── policygentemplates
              │     ├── common-ranGen.yaml
              │     ├── example-sno-site.yaml
              │     ├── group-du-sno-ranGen.yaml
              │     ├── group-du-sno-validator-ranGen.yaml
              │     ├── kustomization.yaml
              │     └── ns.yaml
              └── siteconfig
                     ├── example-sno.yaml
                     ├── KlusterletAddonConfigOverride.yaml
                     └── kustomization.yaml

3. Create an output folder for the site installation CRs:

   $ mkdir -p ./site-install

4. Modify the example SiteConfig CR for the cluster type that you want to install. Copy example-sno.yaml to site-1-sno.yaml and modify the CR to match the details of the site and bare-metal host that you want to install, for example:

   Example single-node OpenShift cluster SiteConfig CR

   apiVersion: ran.openshift.io/v1
   kind: SiteConfig
   metadata:
     name: "<site_name>"
     namespace: "<site_name>"
   spec:
     baseDomain: "example.com"
     pullSecretRef:
       name: "assisted-deployment-pull-secret" 1
     clusterImageSetNameRef: "openshift-4.11" 2
     sshPublicKey: "ssh-rsa AAAA..." 3
     clusters:
     - clusterName: "<site_name>"
       networkType: "OVNKubernetes"
       clusterLabels: 4
         common: true
         group-du-sno: ""
         sites : "<site_name>"
       clusterNetwork:
         - cidr: 1001:1::/48
           hostPrefix: 64
       machineNetwork:
         - cidr: 1111:2222:3333:4444::/64
       serviceNetwork:
         - 1001:2::/112
       additionalNTPSources:
         - 1111:2222:3333:4444::2
       #crTemplates:
       #  KlusterletAddonConfig: "KlusterletAddonConfigOverride.yaml" 5
       nodes:
         - hostName: "example-node.example.com" 6
           role: "master"
           bmcAddress: idrac-virtualmedia://<out_of_band_ip>/<system_id>/ 7
           bmcCredentialsName:
             name: "bmh-secret" 8
           bootMACAddress: "AA:BB:CC:DD:EE:11"
           bootMode: "UEFI" 9
           rootDeviceHints:
             wwn: "0x11111000000asd123"
           cpuset: "0-1,52-53"  10
           nodeNetwork: 11
             interfaces:
               - name: eno1
                 macAddress: "AA:BB:CC:DD:EE:11"
             config:
               interfaces:
                 - name: eno1
                   type: ethernet
                   state: up
                   ipv4:
                     enabled: false
                   ipv6: 12
                     enabled: true
                     address:
                     - ip: 1111:2222:3333:4444::aaaa:1
                       prefix-length: 64
               dns-resolver:
                 config:
                   search:
                   - example.com
                   server:
                   - 1111:2222:3333:4444::2
               routes:
                 config:
                 - destination: ::/0
                   next-hop-interface: eno1
                   next-hop-address: 1111:2222:3333:4444::1
                   table-id: 254

   1

   Create the assisted-deployment-pull-secret CR with the same namespace as the SiteConfig CR.

   2

   clusterImageSetNameRef defines an image set available on the hub cluster. To see the list of supported versions on your hub cluster, run oc get clusterimagesets.

   3

   Configure the SSH public key used to access the cluster.

   4

   Cluster labels must correspond to the bindingRules field in the PolicyGenTemplate CRs that you define. For example, policygentemplates/common-ranGen.yaml applies to all clusters with common: true set, policygentemplates/group-du-sno-ranGen.yaml applies to all clusters with group-du-sno: "" set.

   5

   Optional. The CR specifed under KlusterletAddonConfig is used to override the default KlusterletAddonConfig that is created for the cluster.

   6

   For single-node deployments, define a single host. For three-node deployments, define three hosts. For standard deployments, define three hosts with role: master and two or more hosts defined with role: worker.

   7

   BMC address that you use to access the host. Applies to all cluster types.

   8

   Name of the bmh-secret CR that you separately create with the host BMC credentials. When creating the bmh-secret CR, use the same namespace as the SiteConfig CR that provisions the host.

   9

   Configures the boot mode for the host. The default value is UEFI. Use UEFISecureBoot to enable secure boot on the host.

   10

   cpuset must match the value set in the cluster PerformanceProfile CR spec.cpu.reserved field for workload partitioning.

   11

   Specifies the network settings for the node.

   12

   Configures the IPv6 address for the host. For single-node OpenShift clusters with static IP addresses, the node-specific API and Ingress IPs should be the same.

5. Generate the day-0 installation CRs by processing the modified SiteConfig CR site-1-sno.yaml by running the following command:

   $ podman run -it --rm -v `pwd`/out/argocd/example/siteconfig:/resources:Z -v `pwd`/site-install:/output:Z,U registry.redhat.io/openshift4/ztp-site-generate-rhel8:v4.11.1 generator install site-1-sno.yaml /output

   Example output

   site-install
   └── site-1-sno
       ├── site-1_agentclusterinstall_example-sno.yaml
       ├── site-1-sno_baremetalhost_example-node1.example.com.yaml
       ├── site-1-sno_clusterdeployment_example-sno.yaml
       ├── site-1-sno_configmap_example-sno.yaml
       ├── site-1-sno_infraenv_example-sno.yaml
       ├── site-1-sno_klusterletaddonconfig_example-sno.yaml
       ├── site-1-sno_machineconfig_02-master-workload-partitioning.yaml
       ├── site-1-sno_machineconfig_predefined-extra-manifests-master.yaml
       ├── site-1-sno_machineconfig_predefined-extra-manifests-worker.yaml
       ├── site-1-sno_managedcluster_example-sno.yaml
       ├── site-1-sno_namespace_example-sno.yaml
       └── site-1-sno_nmstateconfig_example-node1.example.com.yaml

6. Optional: Generate just the day-0 MachineConfig installation CRs for a particular cluster type by processing the reference SiteConfig CR with the -E option. For example, run the following commands:

   1. Create an output folder for the MachineConfig CRs:

      $ mkdir -p ./site-machineconfig

   2. Generate the MachineConfig installation CRs:

      $ podman run -it --rm -v `pwd`/out/argocd/example/siteconfig:/resources:Z -v `pwd`/site-machineconfig:/output:Z,U registry.redhat.io/openshift4/ztp-site-generate-rhel8:v4.11.1 generator install -E site-1-sno.yaml /output

      Example output

      site-machineconfig
      └── site-1-sno
          ├── site-1-sno_machineconfig_02-master-workload-partitioning.yaml
          ├── site-1-sno_machineconfig_predefined-extra-manifests-master.yaml
          └── site-1-sno_machineconfig_predefined-extra-manifests-worker.yaml

7. Generate and export the day-2 configuration CRs using the reference PolicyGenTemplate CRs from the previous step. Run the following commands:

   1. Create an output folder for the day-2 CRs:

      $ mkdir -p ./ref

   2. Generate and export the day-2 configuration CRs:

      $ podman run -it --rm -v `pwd`/out/argocd/example/policygentemplates:/resources:Z -v `pwd`/ref:/output:Z,U registry.redhat.io/openshift4/ztp-site-generate-rhel8:v4.11.1 generator config -N . /output

      The command generates example group and site-specific PolicyGenTemplate CRs for single-node OpenShift, three-node clusters, and standard clusters in the ./ref folder.

      Example output

      ref
       └── customResource
            ├── common
            ├── example-multinode-site
            ├── example-sno
            ├── group-du-3node
            ├── group-du-3node-validator
            │    └── Multiple-validatorCRs
            ├── group-du-sno
            ├── group-du-sno-validator
            ├── group-du-standard
            └── group-du-standard-validator
                 └── Multiple-validatorCRs

8. Use the generated CRs as the basis for the CRs that you use to install the cluster. You apply the installation CRs to the hub cluster as described in "Installing a single managed cluster". The configuration CRs can be applied to the cluster after cluster installation is complete.

Procedure

1. Create a YAML secret file containing credentials for the host Baseboard Management Controller (BMC) and a pull secret required for installing OpenShift and all add-on cluster Operators:

   1. Save the following YAML as the file example-sno-secret.yaml:

      apiVersion: v1
      kind: Secret
      metadata:
        name: example-sno-bmc-secret
        namespace: example-sno 1
      data: 2
        password: <base64_password>
        username: <base64_username>
      type: Opaque
      ---
      apiVersion: v1
      kind: Secret
      metadata:
        name: pull-secret
        namespace: example-sno  3
      data:
        .dockerconfigjson: <pull_secret> 4
      type: kubernetes.io/dockerconfigjson

      1

      Must match the namespace configured in the related SiteConfig CR

      2

      Base64-encoded values for password and username

      3

      Must match the namespace configured in the related SiteConfig CR

      4

      Base64-encoded pull secret

2. Add the relative path to example-sno-secret.yaml to the kustomization.yaml file that you use to install the cluster.

Procedure

1. Create a ClusterImageSet for each specific cluster version to be deployed, for example clusterImageSet-4.11.yaml. A ClusterImageSet has the following format:

   apiVersion: hive.openshift.io/v1
   kind: ClusterImageSet
   metadata:
     name: openshift-4.11.0 1
   spec:
      releaseImage: quay.io/openshift-release-dev/ocp-release:4.11.0-x86_64 2

   1

   The descriptive version that you want to deploy.

   2

   Specifies the releaseImage to deploy and determines the operating system image version. The discovery ISO is based on the image version as set by releaseImage, or the latest version if the exact version is unavailable.

2. Apply the clusterImageSet CR:

   $ oc apply -f clusterImageSet-4.11.yaml

3. Create the Namespace CR in the cluster-namespace.yaml file:

   apiVersion: v1
   kind: Namespace
   metadata:
        name: <cluster_name> 1
        labels:
           name: <cluster_name> 2

   1 2

   The name of the managed cluster to provision.

4. Apply the Namespace CR by running the following command:

   $ oc apply -f cluster-namespace.yaml

5. Apply the generated day-0 CRs that you extracted from the ztp-site-generate container and customized to meet your requirements:

   $ oc apply -R ./site-install/site-sno-1

Procedure

1. Check the status of the managed cluster:

   $ oc get managedcluster

   True indicates the managed cluster is ready.

2. Check the agent status:

   $ oc get agent -n <cluster_name>

3. Use the describe command to provide an in-depth description of the agent’s condition. Statuses to be aware of include BackendError, InputError, ValidationsFailing, InstallationFailed, and AgentIsConnected. These statuses are relevant to the Agent and AgentClusterInstall custom resources.

   $ oc describe agent -n <cluster_name>

4. Check the cluster provisioning status:

   $ oc get agentclusterinstall -n <cluster_name>

5. Use the describe command to provide an in-depth description of the cluster provisioning status:

   $ oc describe agentclusterinstall -n <cluster_name>

6. Check the status of the managed cluster’s add-on services:

   $ oc get managedclusteraddon -n <cluster_name>

7. Retrieve the authentication information of the kubeconfig file for the managed cluster:

   $ oc get secret -n <cluster_name> <cluster_name>-admin-kubeconfig -o jsonpath={.data.kubeconfig} | base64 -d > <directory>/<cluster_name>-kubeconfig

Procedure

1. Check the status of the managed cluster:

   $ oc get managedcluster

   Example output

   NAME            HUB ACCEPTED   MANAGED CLUSTER URLS   JOINED   AVAILABLE   AGE
   SNO-cluster     true                                   True     True      2d19h

   If the status in the AVAILABLE column is True, the managed cluster is being managed by the hub.

   If the status in the AVAILABLE column is Unknown, the managed cluster is not being managed by the hub. Use the following steps to continue checking to get more information.

2. Check the AgentClusterInstall install status:

   $ oc get clusterdeployment -n <cluster_name>

   Example output

   NAME        PLATFORM            REGION   CLUSTERTYPE   INSTALLED    INFRAID    VERSION  POWERSTATE AGE
   Sno0026    agent-baremetal                               false                          Initialized
   2d14h

   If the status in the INSTALLED column is false, the installation was unsuccessful.

3. If the installation failed, enter the following command to review the status of the AgentClusterInstall resource:

   $ oc describe agentclusterinstall -n <cluster_name> <cluster_name>

4. Resolve the errors and reset the cluster:

   1. Remove the cluster’s managed cluster resource:

      $ oc delete managedcluster <cluster_name>

   2. Remove the cluster’s namespace:

      $ oc delete namespace <cluster_name>

      This deletes all of the namespace-scoped custom resources created for this cluster. You must wait for the ManagedCluster CR deletion to complete before proceeding.

   3. Recreate the custom resources for the managed cluster.

Procedure

1. Set the UEFI/BIOS Boot Mode to UEFI.
2. In the host boot sequence order, set Hard drive first.

3. Apply the specific firmware configuration for your hardware. The following table describes a representative firmware configuration for an Intel Xeon Skylake or Intel Cascade Lake server, based on the Intel FlexRAN 4G and 5G baseband PHY reference design.

   Important

   The exact firmware configuration depends on your specific hardware and network requirements. The following sample configuration is for illustrative purposes only.

   Table 22.6. Sample firmware configuration for an Intel Xeon Skylake or Cascade Lake server

   Firmware setting	Configuration
   CPU Power and Performance Policy	Performance
   Uncore Frequency Scaling	Disabled
   Performance P-limit	Disabled
   Enhanced Intel SpeedStep ® Tech	Enabled
   Intel Configurable TDP	Enabled
   Configurable TDP Level	Level 2
   Intel® Turbo Boost Technology	Enabled
   Energy Efficient Turbo	Disabled
   Hardware P-States	Disabled
   Package C-State	C0/C1 state
   C1E	Disabled
   Processor C6	Disabled

Procedure

1. Check that the default OperatorHub sources are disabled. Run the following command:

   $ oc get operatorhub cluster -o yaml

   Example output

   spec:
       disableAllDefaultSources: true

2. Check that all required CatalogSource resources are annotated for workload partitioning (PreferredDuringScheduling) by running the following command:

   $ oc get catalogsource -A -o jsonpath='{range .items[*]}{.metadata.name}{" -- "}{.metadata.annotations.target\.workload\.openshift\.io/management}{"\n"}{end}'

   Example output

   certified-operators -- {"effect": "PreferredDuringScheduling"}
   community-operators -- {"effect": "PreferredDuringScheduling"}
   ran-operators 1
   redhat-marketplace -- {"effect": "PreferredDuringScheduling"}
   redhat-operators -- {"effect": "PreferredDuringScheduling"}

   1

   CatalogSource resources that are not annotated are also returned. In this example, the ran-operators CatalogSource resource is not annotated and does not have the PreferredDuringScheduling annotation.

   Note

   In a properly configured vDU cluster, only a single annotated catalog source is listed.

3. Check that all applicable OpenShift Container Platform Operator namespaces are annotated for workload partitioning. This includes all Operators installed with core OpenShift Container Platform and the set of additional Operators included in the reference DU tuning configuration. Run the following command:

   $ oc get namespaces -A -o jsonpath='{range .items[*]}{.metadata.name}{" -- "}{.metadata.annotations.workload\.openshift\.io/allowed}{"\n"}{end}'

   Example output

   default --
   openshift-apiserver -- management
   openshift-apiserver-operator -- management
   openshift-authentication -- management
   openshift-authentication-operator -- management

   Important

   Additional Operators must not be annotated for workload partitioning. In the output from the previous command, additional Operators should be listed without any value on the right side of the -- separator.

4. Check that the ClusterLogging configuration is correct. Run the following commands:

   1. Validate that the appropriate input and output logs are configured:

      $ oc get -n openshift-logging ClusterLogForwarder instance -o yaml

      Example output

      apiVersion: logging.openshift.io/v1
      kind: ClusterLogForwarder
      metadata:
        creationTimestamp: "2022-07-19T21:51:41Z"
        generation: 1
        name: instance
        namespace: openshift-logging
        resourceVersion: "1030342"
        uid: 8c1a842d-80c5-447a-9150-40350bdf40f0
      spec:
        inputs:
        - infrastructure: {}
          name: infra-logs
        outputs:
        - name: kafka-open
          type: kafka
          url: tcp://10.46.55.190:9092/test
        pipelines:
        - inputRefs:
          - audit
          name: audit-logs
          outputRefs:
          - kafka-open
        - inputRefs:
          - infrastructure
          name: infrastructure-logs
          outputRefs:
          - kafka-open
      ...

   2. Check that the curation schedule is appropriate for your application:

      $ oc get -n openshift-logging clusterloggings.logging.openshift.io instance -o yaml

      Example output

      apiVersion: logging.openshift.io/v1
      kind: ClusterLogging
      metadata:
        creationTimestamp: "2022-07-07T18:22:56Z"
        generation: 1
        name: instance
        namespace: openshift-logging
        resourceVersion: "235796"
        uid: ef67b9b8-0e65-4a10-88ff-ec06922ea796
      spec:
        collection:
          logs:
            fluentd: {}
            type: fluentd
        curation:
          curator:
            schedule: 30 3 * * *
          type: curator
        managementState: Managed
      ...

5. Check that the web console is disabled (managementState: Removed) by running the following command:

   $ oc get consoles.operator.openshift.io cluster -o jsonpath="{ .spec.managementState }"

   Example output

   Removed

6. Check that chronyd is disabled on the cluster node by running the following commands:

   $ oc debug node/<node_name>

   Check the status of chronyd on the node:

   sh-4.4# chroot /host

   sh-4.4# systemctl status chronyd

   Example output

   ● chronyd.service - NTP client/server
       Loaded: loaded (/usr/lib/systemd/system/chronyd.service; disabled; vendor preset: enabled)
       Active: inactive (dead)
         Docs: man:chronyd(8)
               man:chrony.conf(5)

7. Check that the PTP interface is successfully synchronized to the primary clock using a remote shell connection to the linuxptp-daemon container and the PTP Management Client (pmc) tool:

   1. Set the $PTP_POD_NAME variable with the name of the linuxptp-daemon pod by running the following command:

      $ PTP_POD_NAME=$(oc get pods -n openshift-ptp -l app=linuxptp-daemon -o name)

   2. Run the following command to check the sync status of the PTP device:

      $ oc -n openshift-ptp rsh -c linuxptp-daemon-container ${PTP_POD_NAME} pmc -u -f /var/run/ptp4l.0.config -b 0 'GET PORT_DATA_SET'

      Example output

      sending: GET PORT_DATA_SET
        3cecef.fffe.7a7020-1 seq 0 RESPONSE MANAGEMENT PORT_DATA_SET
          portIdentity            3cecef.fffe.7a7020-1
          portState               SLAVE
          logMinDelayReqInterval  -4
          peerMeanPathDelay       0
          logAnnounceInterval     1
          announceReceiptTimeout  3
          logSyncInterval         0
          delayMechanism          1
          logMinPdelayReqInterval 0
          versionNumber           2
        3cecef.fffe.7a7020-2 seq 0 RESPONSE MANAGEMENT PORT_DATA_SET
          portIdentity            3cecef.fffe.7a7020-2
          portState               LISTENING
          logMinDelayReqInterval  0
          peerMeanPathDelay       0
          logAnnounceInterval     1
          announceReceiptTimeout  3
          logSyncInterval         0
          delayMechanism          1
          logMinPdelayReqInterval 0
          versionNumber           2

   3. Run the following pmc command to check the PTP clock status:

      $ oc -n openshift-ptp rsh -c linuxptp-daemon-container ${PTP_POD_NAME} pmc -u -f /var/run/ptp4l.0.config -b 0 'GET TIME_STATUS_NP'

      Example output

      sending: GET TIME_STATUS_NP
        3cecef.fffe.7a7020-0 seq 0 RESPONSE MANAGEMENT TIME_STATUS_NP
          master_offset              10 1
          ingress_time               1657275432697400530
          cumulativeScaledRateOffset +0.000000000
          scaledLastGmPhaseChange    0
          gmTimeBaseIndicator        0
          lastGmPhaseChange          0x0000'0000000000000000.0000
          gmPresent                  true 2
          gmIdentity                 3c2c30.ffff.670e00

      1

      master_offset should be between -100 and 100 ns.

      2

      Indicates that the PTP clock is synchronized to a master, and the local clock is not the grandmaster clock.

   4. Check that the expected master offset value corresponding to the value in /var/run/ptp4l.0.config is found in the linuxptp-daemon-container log:

      $ oc logs $PTP_POD_NAME -n openshift-ptp -c linuxptp-daemon-container

      Example output

      phc2sys[56020.341]: [ptp4l.1.config] CLOCK_REALTIME phc offset  -1731092 s2 freq -1546242 delay    497
      ptp4l[56020.390]: [ptp4l.1.config] master offset         -2 s2 freq   -5863 path delay       541
      ptp4l[56020.390]: [ptp4l.0.config] master offset         -8 s2 freq  -10699 path delay       533

8. Check that the SR-IOV configuration is correct by running the following commands:

   1. Check that the disableDrain value in the SriovOperatorConfig resource is set to true:

      $ oc get sriovoperatorconfig -n openshift-sriov-network-operator default -o jsonpath="{.spec.disableDrain}{'\n'}"

      Example output

      true

   2. Check that the SriovNetworkNodeState sync status is Succeeded by running the following command:

      $ oc get SriovNetworkNodeStates -n openshift-sriov-network-operator -o jsonpath="{.items[*].status.syncStatus}{'\n'}"

      Example output

      Succeeded

   3. Verify that the expected number and configuration of virtual functions (Vfs) under each interface configured for SR-IOV is present and correct in the .status.interfaces field. For example:

      $ oc get SriovNetworkNodeStates -n openshift-sriov-network-operator -o yaml

      Example output

      apiVersion: v1
      items:
      - apiVersion: sriovnetwork.openshift.io/v1
        kind: SriovNetworkNodeState
      ...
        status:
          interfaces:
          ...
          - Vfs:
            - deviceID: 154c
              driver: vfio-pci
              pciAddress: 0000:3b:0a.0
              vendor: "8086"
              vfID: 0
            - deviceID: 154c
              driver: vfio-pci
              pciAddress: 0000:3b:0a.1
              vendor: "8086"
              vfID: 1
            - deviceID: 154c
              driver: vfio-pci
              pciAddress: 0000:3b:0a.2
              vendor: "8086"
              vfID: 2
            - deviceID: 154c
              driver: vfio-pci
              pciAddress: 0000:3b:0a.3
              vendor: "8086"
              vfID: 3
            - deviceID: 154c
              driver: vfio-pci
              pciAddress: 0000:3b:0a.4
              vendor: "8086"
              vfID: 4
            - deviceID: 154c
              driver: vfio-pci
              pciAddress: 0000:3b:0a.5
              vendor: "8086"
              vfID: 5
            - deviceID: 154c
              driver: vfio-pci
              pciAddress: 0000:3b:0a.6
              vendor: "8086"
              vfID: 6
            - deviceID: 154c
              driver: vfio-pci
              pciAddress: 0000:3b:0a.7
              vendor: "8086"
              vfID: 7

9. Check that the cluster performance profile is correct. The cpu and hugepages sections will vary depending on your hardware configuration. Run the following command:

   $ oc get PerformanceProfile openshift-node-performance-profile -o yaml

   Example output

   apiVersion: performance.openshift.io/v2
   kind: PerformanceProfile
   metadata:
     creationTimestamp: "2022-07-19T21:51:31Z"
     finalizers:
     - foreground-deletion
     generation: 1
     name: openshift-node-performance-profile
     resourceVersion: "33558"
     uid: 217958c0-9122-4c62-9d4d-fdc27c31118c
   spec:
     additionalKernelArgs:
     - idle=poll
     - rcupdate.rcu_normal_after_boot=0
     - efi=runtime
     cpu:
       isolated: 2-51,54-103
       reserved: 0-1,52-53
     hugepages:
       defaultHugepagesSize: 1G
       pages:
       - count: 32
         size: 1G
     machineConfigPoolSelector:
       pools.operator.machineconfiguration.openshift.io/master: ""
     net:
       userLevelNetworking: true
     nodeSelector:
       node-role.kubernetes.io/master: ""
     numa:
       topologyPolicy: restricted
     realTimeKernel:
       enabled: true
   status:
     conditions:
     - lastHeartbeatTime: "2022-07-19T21:51:31Z"
       lastTransitionTime: "2022-07-19T21:51:31Z"
       status: "True"
       type: Available
     - lastHeartbeatTime: "2022-07-19T21:51:31Z"
       lastTransitionTime: "2022-07-19T21:51:31Z"
       status: "True"
       type: Upgradeable
     - lastHeartbeatTime: "2022-07-19T21:51:31Z"
       lastTransitionTime: "2022-07-19T21:51:31Z"
       status: "False"
       type: Progressing
     - lastHeartbeatTime: "2022-07-19T21:51:31Z"
       lastTransitionTime: "2022-07-19T21:51:31Z"
       status: "False"
       type: Degraded
     runtimeClass: performance-openshift-node-performance-profile
     tuned: openshift-cluster-node-tuning-operator/openshift-node-performance-openshift-node-performance-profile

   Note

   CPU settings are dependent on the number of cores available on the server and should align with workload partitioning settings. hugepages configuration is server and application dependent.

10. Check that the PerformanceProfile was successfully applied to the cluster by running the following command:

    $ oc get performanceprofile openshift-node-performance-profile -o jsonpath="{range .status.conditions[*]}{ @.type }{' -- '}{@.status}{'\n'}{end}"

    Example output

    Available -- True
    Upgradeable -- True
    Progressing -- False
    Degraded -- False

11. Check the Tuned performance patch settings by running the following command:

    $ oc get tuneds.tuned.openshift.io -n openshift-cluster-node-tuning-operator performance-patch -o yaml

    Example output

    apiVersion: tuned.openshift.io/v1
    kind: Tuned
    metadata:
      creationTimestamp: "2022-07-18T10:33:52Z"
      generation: 1
      name: performance-patch
      namespace: openshift-cluster-node-tuning-operator
      resourceVersion: "34024"
      uid: f9799811-f744-4179-bf00-32d4436c08fd
    spec:
      profile:
      - data: |
          [main]
          summary=Configuration changes profile inherited from performance created tuned
          include=openshift-node-performance-openshift-node-performance-profile
          [bootloader]
          cmdline_crash=nohz_full=2-23,26-47 1
          [sysctl]
          kernel.timer_migration=1
          [scheduler]
          group.ice-ptp=0:f:10:*:ice-ptp.*
          [service]
          service.stalld=start,enable
          service.chronyd=stop,disable
        name: performance-patch
      recommend:
      - machineConfigLabels:
          machineconfiguration.openshift.io/role: master
        priority: 19
        profile: performance-patch

    1

    The cpu list in cmdline=nohz_full= will vary based on your hardware configuration.

12. Check that cluster networking diagnostics are disabled by running the following command:

    $ oc get networks.operator.openshift.io cluster -o jsonpath='{.spec.disableNetworkDiagnostics}'

    Example output

    true

13. Check that the Kubelet housekeeping interval is tuned to slower rate. This is set in the containerMountNS machine config. Run the following command:

    $ oc describe machineconfig container-mount-namespace-and-kubelet-conf-master | grep OPENSHIFT_MAX_HOUSEKEEPING_INTERVAL_DURATION

    Example output

    Environment="OPENSHIFT_MAX_HOUSEKEEPING_INTERVAL_DURATION=60s"

14. Check that Grafana and alertManagerMain are disabled and that the Prometheus retention period is set to 24h by running the following command:

    $ oc get configmap cluster-monitoring-config -n openshift-monitoring -o jsonpath="{ .data.config\.yaml }"

    Example output

    grafana:
      enabled: false
    alertmanagerMain:
      enabled: false
    prometheusK8s:
       retention: 24h

    1. Use the following commands to verify that Grafana and alertManagerMain routes are not found in the cluster:

       $ oc get route -n openshift-monitoring alertmanager-main

       $ oc get route -n openshift-monitoring grafana

       Both queries should return Error from server (NotFound) messages.

15. Check that there is a minimum of 4 CPUs allocated as reserved for each of the PerformanceProfile, Tuned performance-patch, workload partitioning, and kernel command line arguments by running the following command:

    $ oc get performanceprofile -o jsonpath="{ .items[0].spec.cpu.reserved }"

    Example output

    0-3

    Note

    Depending on your workload requirements, you might require additional reserved CPUs to be allocated.

Procedure

1. Create a set of extra manifest CRs that the ZTP pipeline uses to customize the cluster installs.

2. In your custom /siteconfig directory, create an /extra-manifest folder for your extra manifests. The following example illustrates a sample /siteconfig with /extra-manifest folder:

   siteconfig
   ├── site1-sno-du.yaml
   ├── site2-standard-du.yaml
   └── extra-manifest
       └── 01-example-machine-config.yaml

3. Add your custom extra manifest CRs to the siteconfig/extra-manifest directory.

4. In your SiteConfig CR, enter the directory name in the extraManifestPath field, for example:

   clusters:
   - clusterName: "example-sno"
     networkType: "OVNKubernetes"
     extraManifestPath: extra-manifest

5. Save the SiteConfig CRs and /extra-manifest CRs and push them to the site configuration repo.

Procedure

1. To prevent the ZTP pipeline from applying the 03-sctp-machine-config-worker.yaml CR file, apply the following YAML in the SiteConfig CR:

   apiVersion: ran.openshift.io/v1
   kind: SiteConfig
   metadata:
     name: "site1-sno-du"
     namespace: "site1-sno-du"
   spec:
     baseDomain: "example.com"
     pullSecretRef:
       name: "assisted-deployment-pull-secret"
     clusterImageSetNameRef: "openshift-4.11"
     sshPublicKey: "<ssh_public_key>"
     clusters:
   - clusterName: "site1-sno-du"
     extraManifests:
       filter:
         exclude:
           - 03-sctp-machine-config-worker.yaml

   The ZTP pipeline skips the 03-sctp-machine-config-worker.yaml CR during installation. All other CRs in /source-crs/extra-manifest are applied.

2. Save the SiteConfig CR and push the changes to the site configuration repository.

   The ZTP pipeline monitors and adjusts what CRs it applies based on the SiteConfig filter instructions.

3. Optional: To prevent the ZTP pipeline from applying all the /source-crs/extra-manifest CRs during cluster installation, apply the following YAML in the SiteConfig CR:

   - clusterName: "site1-sno-du"
     extraManifests:
       filter:
         inclusionDefault: exclude

4. Optional: To exclude all the /source-crs/extra-manifest RAN CRs and instead include a custom CR file during installation, edit the custom SiteConfig CR to set the custom manifests folder and the include file, for example:

   clusters:
   - clusterName: "site1-sno-du"
     extraManifestPath: "<custom_manifest_folder>" 1
     extraManifests:
       filter:
         inclusionDefault: exclude  2
         include:
           - custom-sctp-machine-config-worker.yaml

   1

   Replace <custom_manifest_folder> with the name of the folder that contains the custom installation CRs, for example, user-custom-manifest/.

   2

   Set inclusionDefault to exclude to prevent the ZTP pipeline from applying the files in /source-crs/extra-manifest during installation.

   The following example illustrates the custom folder structure:

   siteconfig
     ├── site1-sno-du.yaml
     └── user-custom-manifest
           └── custom-sctp-machine-config-worker.yaml

Procedure

1. Review the baseline source CR for existing content. You can review the source CRs listed in the reference PolicyGenTemplate CRs by extracting them from the zero touch provisioning (ZTP) container.

   1. Create an /out folder:

      $ mkdir -p ./out

   2. Extract the source CRs:

      $ podman run --log-driver=none --rm registry.redhat.io/openshift4/ztp-site-generate-rhel8:v4.11.1 extract /home/ztp --tar | tar x -C ./out

2. Review the baseline PerformanceProfile CR in ./out/source-crs/PerformanceProfile.yaml:

   apiVersion: performance.openshift.io/v2
   kind: PerformanceProfile
   metadata:
     name: $name
     annotations:
       ran.openshift.io/ztp-deploy-wave: "10"
   spec:
     additionalKernelArgs:
     - "idle=poll"
     - "rcupdate.rcu_normal_after_boot=0"
     cpu:
       isolated: $isolated
       reserved: $reserved
     hugepages:
       defaultHugepagesSize: $defaultHugepagesSize
       pages:
         - size: $size
           count: $count
           node: $node
     machineConfigPoolSelector:
       pools.operator.machineconfiguration.openshift.io/$mcp: ""
     net:
       userLevelNetworking: true
     nodeSelector:
       node-role.kubernetes.io/$mcp: ''
     numa:
       topologyPolicy: "restricted"
     realTimeKernel:
       enabled: true

   Note

   Any fields in the source CR which contain $…​ are removed from the generated CR if they are not provided in the PolicyGenTemplate CR.

3. Update the PolicyGenTemplate entry for PerformanceProfile in the group-du-sno-ranGen.yaml reference file. The following example PolicyGenTemplate CR stanza supplies appropriate CPU specifications, sets the hugepages configuration, and adds a new field that sets globallyDisableIrqLoadBalancing to false.

   - fileName: PerformanceProfile.yaml
     policyName: "config-policy"
     metadata:
       name: openshift-node-performance-profile
     spec:
       cpu:
         # These must be tailored for the specific hardware platform
         isolated: "2-19,22-39"
         reserved: "0-1,20-21"
       hugepages:
         defaultHugepagesSize: 1G
         pages:
           - size: 1G
             count: 10
       globallyDisableIrqLoadBalancing: false

4. Commit the PolicyGenTemplate change in Git, and then push to the Git repository being monitored by the GitOps ZTP argo CD application.

Procedure

1. Create a directory containing a Containerfile and the source CR YAML files that you want to include in the updated ztp-site-generate container, for example:

   ztp-update/
   ├── example-cr1.yaml
   ├── example-cr2.yaml
   └── ztp-update.in

2. Add the following content to the ztp-update.in Containerfile:

   FROM registry.redhat.io/openshift4/ztp-site-generate-rhel8:v4.11
   
   ADD example-cr2.yaml /kustomize/plugin/ran.openshift.io/v1/policygentemplate/source-crs/
   ADD example-cr1.yaml /kustomize/plugin/ran.openshift.io/v1/policygentemplate/source-crs/

3. Open a terminal at the ztp-update/ folder and rebuild the container:

   $ podman build -t ztp-site-generate-rhel8-custom:v4.11-custom-1

4. Push the built container image to your disconnected registry, for example:

   $ podman push localhost/ztp-site-generate-rhel8-custom:v4.11-custom-1 registry.example.com:5000/ztp-site-generate-rhel8-custom:v4.11-custom-1

5. Patch the Argo CD instance on the hub cluster to point to the newly built container image:

   $ oc patch -n openshift-gitops argocd openshift-gitops --type=json -p '[{"op": "replace", "path":"/spec/repo/initContainers/0/image", "value": "registry.example.com:5000/ztp-site-generate-rhel8-custom:v4.11-custom-1"} ]'

   When the Argo CD instance is patched, the openshift-gitops-repo-server pod automatically restarts.

Verification

1. Verify that the new openshift-gitops-repo-server pod has completed initialization and that the previous repo pod is terminated:

   $ oc get pods -n openshift-gitops | grep openshift-gitops-repo-server

   Example output

   openshift-gitops-server-7df86f9774-db682          1/1     Running   	     1          28s

   You must wait until the new openshift-gitops-repo-server pod has completed initialization and the previous pod is terminated before the newly added container image content is available.

Procedure

1. To configure the evaluation interval for all policies in a PolicyGenTemplate CR, add evaluationInterval to the spec field, and then set the appropriate compliant and noncompliant values. For example:

   spec:
     evaluationInterval:
       compliant: 30m
       noncompliant: 20s

2. To configure the evaluation interval for the spec.sourceFiles object in a PolicyGenTemplate CR, add evaluationInterval to the sourceFiles field, for example:

   spec:
     sourceFiles:
      - fileName: SriovSubscription.yaml
        policyName: "sriov-sub-policy"
        evaluationInterval:
          compliant: never
          noncompliant: 10s

3. Commit the PolicyGenTemplate CRs files in the Git repository and push your changes.

1. Log in as a user with cluster-admin privileges on the managed cluster.

2. Get the pods that are running in the open-cluster-management-agent-addon namespace. Run the following command:

   $ oc get pods -n open-cluster-management-agent-addon

   Example output

   NAME                                         READY   STATUS    RESTARTS        AGE
   config-policy-controller-858b894c68-v4xdb    1/1     Running   22 (5d8h ago)   10d

3. Check the applied policies are being evaluated at the expected interval in the logs for the config-policy-controller pod:

   $ oc logs -n open-cluster-management-agent-addon config-policy-controller-858b894c68-v4xdb

   Example output

   2022-05-10T15:10:25.280Z       info   configuration-policy-controller controllers/configurationpolicy_controller.go:166      Skipping the policy evaluation due to the policy not reaching the evaluation interval  {"policy": "compute-1-config-policy-config"}
   2022-05-10T15:10:25.280Z       info   configuration-policy-controller controllers/configurationpolicy_controller.go:166      Skipping the policy evaluation due to the policy not reaching the evaluation interval  {"policy": "compute-1-common-compute-1-catalog-policy-config"}

Procedure

1. Create a standalone PolicyGenTemplate custom resource (CR) that contains the source file validatorCRs/informDuValidator.yaml. You only need one standalone PolicyGenTemplate CR for each cluster type. For example, this CR applies a validator inform policy for single-node OpenShift clusters:

   Example single-node cluster validator inform policy CR (group-du-sno-validator-ranGen.yaml)

   apiVersion: ran.openshift.io/v1
   kind: PolicyGenTemplate
   metadata:
     name: "group-du-sno-validator" 1
     namespace: "ztp-group" 2
   spec:
     bindingRules:
       group-du-sno: "" 3
     bindingExcludedRules:
       ztp-done: "" 4
     mcp: "master" 5
     sourceFiles:
       - fileName: validatorCRs/informDuValidator.yaml
         remediationAction: inform 6
         policyName: "du-policy" 7

   1

   The name of PolicyGenTemplates object. This name is also used as part of the names for the placementBinding, placementRule, and policy that are created in the requested namespace.

   2

   This value should match the namespace used in the group PolicyGenTemplates.

   3

   The group-du-* label defined in bindingRules must exist in the SiteConfig files.

   4

   The label defined in bindingExcludedRules must be`ztp-done:`. The ztp-done label is used in coordination with the Topology Aware Lifecycle Manager.

   5

   mcp defines the MachineConfigPool object that is used in the source file validatorCRs/informDuValidator.yaml. It should be master for single node and three-node cluster deployments and worker for standard cluster deployments.

   6

   Optional. The default value is inform.

   7

   This value is used as part of the name for the generated RHACM policy. The generated validator policy for the single node example is group-du-sno-validator-du-policy.

2. Commit the PolicyGenTemplate CR file in your Git repository and push the changes.

Procedure

1. Add the following YAML into .spec.sourceFiles in the common-ranGen.yaml file to configure the AMQP Operator:

   #AMQ interconnect operator for fast events
   - fileName: AmqSubscriptionNS.yaml
     policyName: "subscriptions-policy"
   - fileName: AmqSubscriptionOperGroup.yaml
     policyName: "subscriptions-policy"
   - fileName: AmqSubscription.yaml
     policyName: "subscriptions-policy"

2. Apply the following PolicyGenTemplate changes to group-du-3node-ranGen.yaml, group-du-sno-ranGen.yaml, or group-du-standard-ranGen.yaml files according to your requirements:

   1. In .sourceFiles, add the PtpOperatorConfig CR file that configures the AMQ transport host to the config-policy:

      - fileName: PtpOperatorConfigForEvent.yaml
        policyName: "config-policy"

   2. Configure the linuxptp and phc2sys for the PTP clock type and interface. For example, add the following stanza into .sourceFiles:

      - fileName: PtpConfigSlave.yaml 1
        policyName: "config-policy"
        metadata:
          name: "du-ptp-slave"
        spec:
          profile:
          - name: "slave"
            interface: "ens5f1" 2
            ptp4lOpts: "-2 -s --summary_interval -4" 3
            phc2sysOpts: "-a -r -m -n 24 -N 8 -R 16" 4
          ptpClockThreshold: 5
            holdOverTimeout: 30 #secs
            maxOffsetThreshold: 100  #nano secs
            minOffsetThreshold: -100 #nano secs

      1

      Can be one PtpConfigMaster.yaml, PtpConfigSlave.yaml, or PtpConfigSlaveCvl.yaml depending on your requirements. PtpConfigSlaveCvl.yaml configures linuxptp services for an Intel E810 Columbiaville NIC. For configurations based on group-du-sno-ranGen.yaml or group-du-3node-ranGen.yaml, use PtpConfigSlave.yaml.

      2

      Device specific interface name.

      3

      You must append the --summary_interval -4 value to ptp4lOpts in .spec.sourceFiles.spec.profile to enable PTP fast events.

      4

      Required phc2sysOpts values. -m prints messages to stdout. The linuxptp-daemon DaemonSet parses the logs and generates Prometheus metrics.

      5

      Optional. If the ptpClockThreshold stanza is not present, default values are used for the ptpClockThreshold fields. The stanza shows default ptpClockThreshold values. The ptpClockThreshold values configure how long after the PTP master clock is disconnected before PTP events are triggered. holdOverTimeout is the time value in seconds before the PTP clock event state changes to FREERUN when the PTP master clock is disconnected. The maxOffsetThreshold and minOffsetThreshold settings configure offset values in nanoseconds that compare against the values for CLOCK_REALTIME (phc2sys) or master offset (ptp4l). When the ptp4l or phc2sys offset value is outside this range, the PTP clock state is set to FREERUN. When the offset value is within this range, the PTP clock state is set to LOCKED.

3. Apply the following PolicyGenTemplate changes to your specific site YAML files, for example, example-sno-site.yaml:

   1. In .sourceFiles, add the Interconnect CR file that configures the AMQ router to the config-policy:

      - fileName: AmqInstance.yaml
        policyName: "config-policy"

4. Merge any other required changes and files with your custom site repository.
5. Push the changes to your site configuration repository to deploy PTP fast events to new sites using GitOps ZTP.

Procedure

1. To configure the AMQ Interconnect Operator and the Bare Metal Event Relay Operator, add the following YAML to spec.sourceFiles in the common-ranGen.yaml file:

   # AMQ interconnect operator for fast events
   - fileName: AmqSubscriptionNS.yaml
     policyName: "subscriptions-policy"
   - fileName: AmqSubscriptionOperGroup.yaml
     policyName: "subscriptions-policy"
   - fileName: AmqSubscription.yaml
     policyName: "subscriptions-policy"
   # Bare Metal Event Rely operator
   - fileName: BareMetalEventRelaySubscriptionNS.yaml
     policyName: "subscriptions-policy"
   - fileName: BareMetalEventRelaySubscriptionOperGroup.yaml
     policyName: "subscriptions-policy"
   - fileName: BareMetalEventRelaySubscription.yaml
     policyName: "subscriptions-policy"

2. Add the Interconnect CR to .spec.sourceFiles in the site configuration file, for example, the example-sno-site.yaml file:

   - fileName: AmqInstance.yaml
     policyName: "config-policy"

3. Add the HardwareEvent CR to spec.sourceFiles in your specific group configuration file, for example, in the group-du-sno-ranGen.yaml file:

   - fileName: HardwareEvent.yaml
     policyName: "config-policy"
     spec:
       nodeSelector: {}
       transportHost: "amqp://<amq_interconnect_name>.<amq_interconnect_namespace>.svc.cluster.local" 1
       logLevel: "info"

   1

   The transportHost URL is composed of the existing AMQ Interconnect CR name and namespace. For example, in transportHost: "amqp://amq-router.amq-router.svc.cluster.local", the AMQ Interconnect name and namespace are both set to amq-router.

   Note

   Each baseboard management controller (BMC) requires a single HardwareEvent resource only.

4. Commit the PolicyGenTemplate change in Git, and then push the changes to your site configuration repository to deploy bare-metal events monitoring to new sites using GitOps ZTP.

5. Create the Redfish Secret by running the following command:

   $ oc -n openshift-bare-metal-events create secret generic redfish-basic-auth \
   --from-literal=username=<bmc_username> --from-literal=password=<bmc_password> \
   --from-literal=hostaddr="<bmc_host_ip_addr>"

1. Label all existing clusters with the ztp-done label.
2. Stop the ArgoCD applications.
3. Install the new GitOps ZTP tools.
4. Update required content and optional changes in the Git repository.
5. Update and restart the application configuration.

Procedure

1. Get the latest version of the GitOps ZTP container that has the custom resources (CRs) used to configure Red Hat OpenShift GitOps for use with GitOps ZTP.

2. Extract the argocd/deployment directory by using the following commands:

   $ mkdir -p ./update

   $ podman run --log-driver=none --rm registry.redhat.io/openshift4/ztp-site-generate-rhel8:v4.11 extract /home/ztp --tar | tar x -C ./update

   The /update directory contains the following subdirectories:

   • update/extra-manifest: contains the source CR files that the SiteConfig CR uses to generate the extra manifest configMap.
   • update/source-crs: contains the source CR files that the PolicyGenTemplate CR uses to generate the Red Hat Advanced Cluster Management (RHACM) policies.
   • update/argocd/deployment: contains patches and YAML files to apply on the hub cluster for use in the next step of this procedure.
   • update/argocd/example: contains example SiteConfig and PolicyGenTemplate files that represent the recommended configuration.

3. Update the clusters-app.yaml and policies-app.yaml files to reflect the name of your applications and the URL, branch, and path for your Git repository.

   If the upgrade includes changes that results in obsolete policies, the obsolete policies should be removed prior to performing the upgrade.

4. Diff the changes between the configuration and deployment source CRs in the /update folder and Git repo where you manage your fleet site CRs. Apply and push the required changes to your site repository.

   Important

   When you update GitOps ZTP to the latest version, you must apply the changes from the update/argocd/deployment directory to your site repository. Do not use older versions of the argocd/deployment/ files.

Procedure

1. Find a label selector that lists the managed clusters that were deployed with zero touch provisioning (ZTP), such as local-cluster!=true:

   $ oc get managedcluster -l 'local-cluster!=true'

2. Ensure that the resulting list contains all the managed clusters that were deployed with ZTP, and then use that selector to add the ztp-done label:

   $ oc label managedcluster -l 'local-cluster!=true' ztp-done=

Procedure

1. Perform a non-cascaded delete on the clusters application to leave all generated resources in place:

   $ oc delete -f update/argocd/deployment/clusters-app.yaml

2. Perform a cascaded delete on the policies application to remove all previous policies:

   $ oc patch -f policies-app.yaml -p '{"metadata": {"finalizers": ["resources-finalizer.argocd.argoproj.io"]}}' --type merge

   $ oc delete -f update/argocd/deployment/policies-app.yaml

Procedure

1. To patch the ArgoCD instance in the hub cluster by using the patch file that you previously extracted into the update/argocd/deployment/ directory, enter the following command:

   $ oc patch argocd openshift-gitops \
   -n openshift-gitops --type=merge \
   --patch-file update/argocd/deployment/argocd-openshift-gitops-patch.json

2. To apply the contents of the argocd/deployment directory, enter the following command:

   $ oc apply -k update/argocd/deployment