Edge computing

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-4.15.1-x86_64-live.x86_64.iso

      1

      RootFS image name, for example, rhcos-4.15.1-x86_64-live-rootfs.x86_64.img

      1

      OpenShift Container Platform version, for example, 4.15.1

   2. Download the required images:

      $ sudo wget https://mirror.openshift.com/pub/openshift-v4/dependencies/rhcos/4.15/${OCP_VERSION}/${ISO_IMAGE_NAME} -O /var/www/html/${ISO_IMAGE_NAME}

      $ sudo wget https://mirror.openshift.com/pub/openshift-v4/dependencies/rhcos/4.15/${OCP_VERSION}/${ROOTFS_IMAGE_NAME} -O /var/www/html/${ROOTFS_IMAGE_NAME}

Procedure

1. Enable the Provisioning resource to watch all namespaces and configure mirrors for disconnected environments. For more information, see Enabling the central infrastructure management service.

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

   $ oc edit AgentServiceConfig

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

   - cpuArchitecture: x86_64
       openshiftVersion: "4.15"
       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: multicluster-engine 1
     labels:
       app: assisted-service
   data:
     ca-bundle.crt: | 2
       -----BEGIN CERTIFICATE-----
       <certificate_contents>
       -----END CERTIFICATE-----
   
     registries.conf: | 3
       unqualified-search-registries = ["registry.access.redhat.com", "docker.io"]
   
       [[registry]]
          prefix = ""
          location = "quay.io/example-repository" 4
          mirror-by-digest-only = true
   
          [[registry.mirror]]
          location = "mirror1.registry.corp.com:5000/example-repository" 5

   1

   The ConfigMap namespace must be set to multicluster-engine.

   2

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

   3

   The configuration file for the mirror registry. The mirror registry configuration adds mirror information to the /etc/containers/registries.conf file in the discovery image. The mirror information is stored in the imageContentSources section of the install-config.yaml file when the information is passed to the installation program. The Assisted Service pod that runs on the hub cluster fetches the container images from the configured mirror registry.

   4

   The URL of the mirror registry. You must use the URL from the imageContentSources section by running the oc adm release mirror command when you configure the mirror registry. For more information, see the Mirroring the OpenShift Container Platform image repository section.

   5

   The registries defined in the registries.conf file must be scoped by repository, not by registry. In this example, both the quay.io/example-repository and the mirror1.registry.corp.com:5000/example-repository repositories are scoped by the example-repository repository.

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

   Example output

   apiVersion: agent-install.openshift.io/v1beta1
   kind: AgentServiceConfig
   metadata:
     name: agent
     namespace: multicluster-engine 1
   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 2
     osImages:
       - openshiftVersion: <ocp_version>
         url: <iso_url> 3

   1

   Set the AgentServiceConfig namespace to multicluster-engine to match the ConfigMap namespace

   2

   Set mirrorRegistryRef.name to match the definition specified in the related ConfigMap CR

   3

   Set the URL for the ISO hosted on the httpd server

Procedure

1. Update the AgentServiceConfig custom resource (CR) by running the following command:

   $ oc edit AgentServiceConfig agent

2. Add the unauthenticatedRegistries field in the CR:

   apiVersion: agent-install.openshift.io/v1beta1
   kind: AgentServiceConfig
   metadata:
     name: agent
   spec:
     unauthenticatedRegistries:
     - example.registry.com
     - example.registry2.com
     ...

   Unauthenticated registries are listed under spec.unauthenticatedRegistries in the AgentServiceConfig resource. Any registry on this list is not required to have an entry in the pull secret used for the spoke cluster installation. assisted-service validates the pull secret by making sure it contains the authentication information for every image registry used for installation.

1. Open a debug shell prompt to the hub cluster:

   $ oc debug node/<node_name>

2. Test access to the unauthenticated registry by running the following command:

   sh-4.4# podman login -u kubeadmin -p $(oc whoami -t) <unauthenticated_registry>

   where:

   <unauthenticated_registry>

   Is the new registry, for example, unauthenticated-image-registry.openshift-image-registry.svc:5000.

   Example output

   Login Succeeded!

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 GitOps ZTP plugin, patch the ArgoCD instance in the hub cluster with the relevant multicluster engine (MCE) subscription image. Customize the patch file that you previously extracted into the out/argocd/deployment/ directory for your environment.

   1. Select the multicluster-operators-subscription image that matches your RHACM version.

      Table 2.5. multicluster-operators-subscription image versions

      OpenShift Container Platform version	RHACM version	MCE version	MCE RHEL version	MCE image
      4.14, 4.15, 4.16	2.8, 2.9	2.8, 2.9	RHEL 8	registry.redhat.io/rhacm2/multicluster-operators-subscription-rhel8:v2.8 registry.redhat.io/rhacm2/multicluster-operators-subscription-rhel8:v2.9
      4.14, 4.15, 4.16	2.10	2.10	RHEL 9	registry.redhat.io/rhacm2/multicluster-operators-subscription-rhel9:v2.10

      Important

      The version of the multicluster-operators-subscription image should match the RHACM version. Beginning with the MCE 2.10 release, RHEL 9 is the base image for multicluster-operators-subscription images.

   2. Add the following configuration to the out/argocd/deployment/argocd-openshift-gitops-patch.json file:

      {
        "args": [
          "-c",
          "mkdir -p /.config/kustomize/plugin/policy.open-cluster-management.io/v1/policygenerator && cp /policy-generator/PolicyGenerator-not-fips-compliant /.config/kustomize/plugin/policy.open-cluster-management.io/v1/policygenerator/PolicyGenerator" 1
        ],
        "command": [
          "/bin/bash"
        ],
        "image": "registry.redhat.io/rhacm2/multicluster-operators-subscription-rhel9:v2.10", 2 3
        "name": "policy-generator-install",
        "imagePullPolicy": "Always",
        "volumeMounts": [
          {
            "mountPath": "/.config",
            "name": "kustomize"
          }
        ]
      }

      1

      Optional: For RHEL 9 images, copy the required universal executable in the /policy-generator/PolicyGenerator-not-fips-compliant folder for the ArgoCD version.

      2

      Match the multicluster-operators-subscription image to the RHACM version.

      3

      In disconnected environments, replace the URL for the multicluster-operators-subscription image with the disconnected registry equivalent for your environment.

   3. Patch the ArgoCD instance. 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. In RHACM 2.7 and later, the multicluster engine enables the cluster-proxy-addon feature by default. Apply the following patch to disable the cluster-proxy-addon feature and remove the relevant hub cluster and managed pods that are responsible for this add-on. Run the following command:

   $ oc patch multiclusterengines.multicluster.openshift.io multiclusterengine --type=merge --patch-file out/argocd/deployment/disable-cluster-proxy-addon.json

4. Apply the pipeline configuration to your hub cluster by running the following command:

   $ oc apply -k out/argocd/deployment

Procedure

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

   Note

   Keep SiteConfig and PolicyGenTemplate CRs in separate directories. Both the SiteConfig and PolicyGenTemplate directories must contain a kustomization.yaml file that explicitly includes the files in that directory.

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:v4.15

   $ mkdir -p ./out

   $ podman run --log-driver=none --rm registry.redhat.io/openshift4/ztp-site-generate-rhel8:v4.15 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.
4. Copy the out/source-crs folder and contents to the PolicyGentemplate directory.

5. The out/extra-manifests directory contains the reference manifests for a RAN DU cluster. Copy the out/extra-manifests directory into the SiteConfig folder. This directory should contain CRs from the ztp-site-generate container only. Do not add user-provided CRs here. If you want to work with user-provided CRs you must create another directory for that content. For example:

   example/
     ├── policygentemplates
     │   ├── kustomization.yaml
     │   └── source-crs/
     └── siteconfig
           ├── extra-manifests
           └── kustomization.yaml

6. Commit the directory structure and the kustomization.yaml files and push to your Git repository. The initial push to Git should include the kustomization.yaml files.

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:v4.15 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 GitOps 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 GitOps 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 install the GitOps ZTP plugin, patch the ArgoCD instance in the hub cluster with the relevant multicluster engine (MCE) subscription image. Customize the patch file that you previously extracted into the out/argocd/deployment/ directory for your environment.

   1. Select the multicluster-operators-subscription image that matches your RHACM version.

      Table 3.1. multicluster-operators-subscription image versions

      OpenShift Container Platform version	RHACM version	MCE version	MCE RHEL version	MCE image
      4.14, 4.15, 4.16	2.8, 2.9	2.8, 2.9	RHEL 8	registry.redhat.io/rhacm2/multicluster-operators-subscription-rhel8:v2.8 registry.redhat.io/rhacm2/multicluster-operators-subscription-rhel8:v2.9
      4.14, 4.15, 4.16	2.10	2.10	RHEL 9	registry.redhat.io/rhacm2/multicluster-operators-subscription-rhel9:v2.10

      Important

      The version of the multicluster-operators-subscription image should match the RHACM version. Beginning with the MCE 2.10 release, RHEL 9 is the base image for multicluster-operators-subscription images.

   2. Add the following configuration to the out/argocd/deployment/argocd-openshift-gitops-patch.json file:

      {
        "args": [
          "-c",
          "mkdir -p /.config/kustomize/plugin/policy.open-cluster-management.io/v1/policygenerator && cp /policy-generator/PolicyGenerator-not-fips-compliant /.config/kustomize/plugin/policy.open-cluster-management.io/v1/policygenerator/PolicyGenerator" 1
        ],
        "command": [
          "/bin/bash"
        ],
        "image": "registry.redhat.io/rhacm2/multicluster-operators-subscription-rhel9:v2.10", 2 3
        "name": "policy-generator-install",
        "imagePullPolicy": "Always",
        "volumeMounts": [
          {
            "mountPath": "/.config",
            "name": "kustomize"
          }
        ]
      }

      1

      Optional: For RHEL 9 images, copy the required universal executable in the /policy-generator/PolicyGenerator-not-fips-compliant folder for the ArgoCD version.

      2

      Match the multicluster-operators-subscription image to the RHACM version.

      3

      In disconnected environments, replace the URL for the multicluster-operators-subscription image with the disconnected registry equivalent for your environment.

   3. Patch the ArgoCD instance. Run the following command:

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

2. In RHACM 2.7 and later, the multicluster engine enables the cluster-proxy-addon feature by default. Apply the following patch to disable the cluster-proxy-addon feature and remove the relevant hub cluster and managed pods that are responsible for this add-on. Run the following command:

   $ oc patch multiclusterengines.multicluster.openshift.io multiclusterengine --type=merge --patch-file out/argocd/deployment/disable-cluster-proxy-addon.json

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

   $ oc apply -k out/argocd/deployment

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 InfraEnv CR and edit the spec.kernelArguments specification to configure kernel arguments.

   1. Save the following YAML in an InfraEnv-example.yaml file:

      Note

      The InfraEnv CR in this example uses template syntax such as {{ .Cluster.ClusterName }} that is populated based on values in the SiteConfig CR. The SiteConfig CR automatically populates values for these templates during deployment. Do not edit the templates manually.

      apiVersion: agent-install.openshift.io/v1beta1
      kind: InfraEnv
      metadata:
        annotations:
          argocd.argoproj.io/sync-wave: "1"
        name: "{{ .Cluster.ClusterName }}"
        namespace: "{{ .Cluster.ClusterName }}"
      spec:
        clusterRef:
          name: "{{ .Cluster.ClusterName }}"
          namespace: "{{ .Cluster.ClusterName }}"
        kernelArguments:
          - operation: append 1
            value: audit=0 2
          - operation: append
            value: trace=1
        sshAuthorizedKey: "{{ .Site.SshPublicKey }}"
        proxy: "{{ .Cluster.ProxySettings }}"
        pullSecretRef:
          name: "{{ .Site.PullSecretRef.Name }}"
        ignitionConfigOverride: "{{ .Cluster.IgnitionConfigOverride }}"
        nmStateConfigLabelSelector:
          matchLabels:
            nmstate-label: "{{ .Cluster.ClusterName }}"
        additionalNTPSources: "{{ .Cluster.AdditionalNTPSources }}"

      1

      Specify the append operation to add a kernel argument.

      2

      Specify the kernel argument you want to configure. This example configures the audit kernel argument and the trace kernel argument.

2. Commit the InfraEnv-example.yaml CR to the same location in your Git repository that has the SiteConfig CR and push your changes. The following example shows a sample Git repository structure:

   ~/example-ztp/install
             └── site-install
                  ├── siteconfig-example.yaml
                  ├── InfraEnv-example.yaml
                  ...

3. Edit the spec.clusters.crTemplates specification in the SiteConfig CR to reference the InfraEnv-example.yaml CR in your Git repository:

   clusters:
     crTemplates:
       InfraEnv: "InfraEnv-example.yaml"

   When you are ready to deploy your cluster by committing and pushing the SiteConfig CR, the build pipeline uses the custom InfraEnv-example CR in your Git repository to configure the infrastructure environment, including the custom kernel arguments.

1. Begin an SSH session with the target host:

   $ ssh -i /path/to/privatekey core@<host_name>

2. View the system’s kernel arguments by using the following command:

   $ cat /proc/cmdline

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 SiteConfig CR

      # example-node1-bmh-secret & assisted-deployment-pull-secret need to be created under same namespace example-sno
      ---
      apiVersion: ran.openshift.io/v1
      kind: SiteConfig
      metadata:
        name: "example-sno"
        namespace: "example-sno"
      spec:
        baseDomain: "example.com"
        pullSecretRef:
          name: "assisted-deployment-pull-secret"
        clusterImageSetNameRef: "openshift-4.10"
        sshPublicKey: "ssh-rsa AAAA..."
        clusters:
        - clusterName: "example-sno"
          networkType: "OVNKubernetes"
          # installConfigOverrides is a generic way of passing install-config
          # parameters through the siteConfig.  The 'capabilities' field configures
          # the composable openshift feature.  In this 'capabilities' setting, we
          # remove all but the marketplace component from the optional set of
          # components.
          # Notes:
          # - OperatorLifecycleManager is needed for 4.15 and later
          # - NodeTuning is needed for 4.13 and later, not for 4.12 and earlier
          installConfigOverrides: |
            {
              "capabilities": {
                "baselineCapabilitySet": "None",
                "additionalEnabledCapabilities": [
                  "NodeTuning",
                  "OperatorLifecycleManager"
                ]
              }
            }
          # It is strongly recommended to include crun manifests as part of the additional install-time manifests for 4.13+.
          # The crun manifests can be obtained from source-crs/optional-extra-manifest/ and added to the git repo ie.sno-extra-manifest.
          # extraManifestPath: sno-extra-manifest
          clusterLabels:
            # These example cluster labels correspond to the bindingRules in the PolicyGenTemplate examples
            du-profile: "latest"
            # These example cluster labels correspond to the bindingRules in the PolicyGenTemplate examples in ../policygentemplates:
            # ../policygentemplates/common-ranGen.yaml will apply to all clusters with 'common: true'
            common: true
            # ../policygentemplates/group-du-sno-ranGen.yaml will apply to all clusters with 'group-du-sno: ""'
            group-du-sno: ""
            # ../policygentemplates/example-sno-site.yaml will apply to all clusters with 'sites: "example-sno"'
            # Normally this should match or contain the cluster name so it only applies to a single cluster
            sites : "example-sno"
          clusterNetwork:
            - cidr: 1001:1::/48
              hostPrefix: 64
          machineNetwork:
            - cidr: 1111:2222:3333:4444::/64
          serviceNetwork:
            - 1001:2::/112
          additionalNTPSources:
            - 1111:2222:3333:4444::2
          # Initiates the cluster for workload partitioning. Setting specific reserved/isolated CPUSets is done via PolicyTemplate
          # please see Workload Partitioning Feature for a complete guide.
          cpuPartitioningMode: AllNodes
          # Optionally; This can be used to override the KlusterletAddonConfig that is created for this cluster:
          #crTemplates:
          #  KlusterletAddonConfig: "KlusterletAddonConfigOverride.yaml"
          nodes:
            - hostName: "example-node1.example.com"
              role: "master"
              # Optionally; This can be used to configure desired BIOS setting on a host:
              #biosConfigRef:
              #  filePath: "example-hw.profile"
              bmcAddress: "idrac-virtualmedia+https://[1111:2222:3333:4444::bbbb:1]/redfish/v1/Systems/System.Embedded.1"
              bmcCredentialsName:
                name: "example-node1-bmh-secret"
              bootMACAddress: "AA:BB:CC:DD:EE:11"
              # Use UEFISecureBoot to enable secure boot
              bootMode: "UEFI"
              rootDeviceHints:
                deviceName: "/dev/disk/by-path/pci-0000:01:00.0-scsi-0:2:0:0"
              # disk partition at `/var/lib/containers` with ignitionConfigOverride. Some values must be updated. See DiskPartitionContainer.md for more details
              ignitionConfigOverride: |
                 {
                  "ignition": {
                    "version": "3.2.0"
                  },
                  "storage": {
                    "disks": [
                      {
                        "device": "/dev/disk/by-path/pci-0000:01:00.0-scsi-0:2:0:0",
                        "partitions": [
                          {
                           "label": "var-lib-containers",
                           "sizeMiB": 0,
                           "startMiB": 250000
                        }
                    ],
                    "wipeTable": false
                   }
                 ],
                  "filesystems": [
                    {
                     "device": "/dev/disk/by-partlabel/var-lib-containers",
                     "format": "xfs",
                     "mountOptions": [
                       "defaults",
                       "prjquota"
                      ],
                      "path": "/var/lib/containers",
                      "wipeFilesystem": true
                     }
                   ]
                 },
                 "systemd": {
                   "units": [
                     {
                      "contents": "# Generated by Butane\n[Unit]\nRequires=systemd-fsck@dev-disk-by\\x2dpartlabel-var\\x2dlib\\x2dcontainers.service\nAfter=systemd-fsck@dev-disk-by\\x2dpartlabel-var\\x2dlib\\x2dcontainers.service\n\n[Mount]\nWhere=/var/lib/containers\nWhat=/dev/disk/by-partlabel/var-lib-containers\nType=xfs\nOptions=defaults,prjquota\n\n[Install]\nRequiredBy=local-fs.target",
                      "enabled": true,
                      "name": "var-lib-containers.mount"
                     }
                    ]
                  }
                 }
              nodeNetwork:
                interfaces:
                  - name: eno1
                    macAddress: "AA:BB:CC:DD:EE:11"
                config:
                  interfaces:
                    - name: eno1
                      type: ethernet
                      state: up
                      ipv4:
                        enabled: false
                      ipv6:
                        enabled: true
                        address:
                        # For SNO sites with static IP addresses, the node-specific,
                        # API and Ingress IPs should all be the same and configured on
                        # the interface
                        - 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

      Note

      For more information about BMC addressing, see the "Additional resources" section. The installConfigOverrides and ignitionConfigOverride fields are expanded in the example for ease of readability.

   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.

      Enabling the crun OCI container runtime

      For optimal cluster performance, enable crun for master and worker nodes in single-node OpenShift, single-node OpenShift with additional worker nodes, three-node OpenShift, and standard clusters.

      Enable crun in a ContainerRuntimeConfig CR as an additional Day 0 install-time manifest to avoid the cluster having to reboot.

      The enable-crun-master.yaml and enable-crun-worker.yaml CR files are in the out/source-crs/optional-extra-manifest/ folder that you can extract from the ztp-site-generate container. For more information, see "Customizing extra installation manifests in the GitOps ZTP pipeline".

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.

2. Add the following syncOptions field to your SiteConfig application:

   kind: Application
   spec:
     syncPolicy:
       syncOptions:
       - PrunePropagationPolicy=background

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

3. Optional: If you want to permanently remove a site, you should also remove the SiteConfig and site-specific PolicyGenTemplate files from the Git repository.
4. 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 GitOps 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 GitOps 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": "Remediating non-compliant policies",
     "reason": "InProgress",
     "status": "True",
     "type": "Progressing"
   }

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:v4.15 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-node1-bmh-secret & assisted-deployment-pull-secret need to be created under same namespace example-sno
   ---
   apiVersion: ran.openshift.io/v1
   kind: SiteConfig
   metadata:
     name: "example-sno"
     namespace: "example-sno"
   spec:
     baseDomain: "example.com"
     pullSecretRef:
       name: "assisted-deployment-pull-secret"
     clusterImageSetNameRef: "openshift-4.10"
     sshPublicKey: "ssh-rsa AAAA..."
     clusters:
     - clusterName: "example-sno"
       networkType: "OVNKubernetes"
       # installConfigOverrides is a generic way of passing install-config
       # parameters through the siteConfig.  The 'capabilities' field configures
       # the composable openshift feature.  In this 'capabilities' setting, we
       # remove all but the marketplace component from the optional set of
       # components.
       # Notes:
       # - OperatorLifecycleManager is needed for 4.15 and later
       # - NodeTuning is needed for 4.13 and later, not for 4.12 and earlier
       installConfigOverrides: |
         {
           "capabilities": {
             "baselineCapabilitySet": "None",
             "additionalEnabledCapabilities": [
               "NodeTuning",
               "OperatorLifecycleManager"
             ]
           }
         }
       # It is strongly recommended to include crun manifests as part of the additional install-time manifests for 4.13+.
       # The crun manifests can be obtained from source-crs/optional-extra-manifest/ and added to the git repo ie.sno-extra-manifest.
       # extraManifestPath: sno-extra-manifest
       clusterLabels:
         # These example cluster labels correspond to the bindingRules in the PolicyGenTemplate examples
         du-profile: "latest"
         # These example cluster labels correspond to the bindingRules in the PolicyGenTemplate examples in ../policygentemplates:
         # ../policygentemplates/common-ranGen.yaml will apply to all clusters with 'common: true'
         common: true
         # ../policygentemplates/group-du-sno-ranGen.yaml will apply to all clusters with 'group-du-sno: ""'
         group-du-sno: ""
         # ../policygentemplates/example-sno-site.yaml will apply to all clusters with 'sites: "example-sno"'
         # Normally this should match or contain the cluster name so it only applies to a single cluster
         sites : "example-sno"
       clusterNetwork:
         - cidr: 1001:1::/48
           hostPrefix: 64
       machineNetwork:
         - cidr: 1111:2222:3333:4444::/64
       serviceNetwork:
         - 1001:2::/112
       additionalNTPSources:
         - 1111:2222:3333:4444::2
       # Initiates the cluster for workload partitioning. Setting specific reserved/isolated CPUSets is done via PolicyTemplate
       # please see Workload Partitioning Feature for a complete guide.
       cpuPartitioningMode: AllNodes
       # Optionally; This can be used to override the KlusterletAddonConfig that is created for this cluster:
       #crTemplates:
       #  KlusterletAddonConfig: "KlusterletAddonConfigOverride.yaml"
       nodes:
         - hostName: "example-node1.example.com"
           role: "master"
           # Optionally; This can be used to configure desired BIOS setting on a host:
           #biosConfigRef:
           #  filePath: "example-hw.profile"
           bmcAddress: "idrac-virtualmedia+https://[1111:2222:3333:4444::bbbb:1]/redfish/v1/Systems/System.Embedded.1"
           bmcCredentialsName:
             name: "example-node1-bmh-secret"
           bootMACAddress: "AA:BB:CC:DD:EE:11"
           # Use UEFISecureBoot to enable secure boot
           bootMode: "UEFI"
           rootDeviceHints:
             deviceName: "/dev/disk/by-path/pci-0000:01:00.0-scsi-0:2:0:0"
           # disk partition at `/var/lib/containers` with ignitionConfigOverride. Some values must be updated. See DiskPartitionContainer.md for more details
           ignitionConfigOverride: |
              {
               "ignition": {
                 "version": "3.2.0"
               },
               "storage": {
                 "disks": [
                   {
                     "device": "/dev/disk/by-path/pci-0000:01:00.0-scsi-0:2:0:0",
                     "partitions": [
                       {
                        "label": "var-lib-containers",
                        "sizeMiB": 0,
                        "startMiB": 250000
                     }
                 ],
                 "wipeTable": false
                }
              ],
               "filesystems": [
                 {
                  "device": "/dev/disk/by-partlabel/var-lib-containers",
                  "format": "xfs",
                  "mountOptions": [
                    "defaults",
                    "prjquota"
                   ],
                   "path": "/var/lib/containers",
                   "wipeFilesystem": true
                  }
                ]
              },
              "systemd": {
                "units": [
                  {
                   "contents": "# Generated by Butane\n[Unit]\nRequires=systemd-fsck@dev-disk-by\\x2dpartlabel-var\\x2dlib\\x2dcontainers.service\nAfter=systemd-fsck@dev-disk-by\\x2dpartlabel-var\\x2dlib\\x2dcontainers.service\n\n[Mount]\nWhere=/var/lib/containers\nWhat=/dev/disk/by-partlabel/var-lib-containers\nType=xfs\nOptions=defaults,prjquota\n\n[Install]\nRequiredBy=local-fs.target",
                   "enabled": true,
                   "name": "var-lib-containers.mount"
                  }
                 ]
               }
              }
           nodeNetwork:
             interfaces:
               - name: eno1
                 macAddress: "AA:BB:CC:DD:EE:11"
             config:
               interfaces:
                 - name: eno1
                   type: ethernet
                   state: up
                   ipv4:
                     enabled: false
                   ipv6:
                     enabled: true
                     address:
                     # For SNO sites with static IP addresses, the node-specific,
                     # API and Ingress IPs should all be the same and configured on
                     # the interface
                     - 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

   Note

   Once you have extracted reference CR configuration files from the out/extra-manifest directory of the ztp-site-generate container, you can use extraManifests.searchPaths to include the path to the git directory containing those files. This allows the GitOps ZTP pipeline to apply those CR files during cluster installation. If you configure a searchPaths directory, the GitOps ZTP pipeline does not fetch manifests from the ztp-site-generate container during site installation.

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:v4.15 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:v4.15 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:v4.15 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. Edit the spec.kernelArguments specification in the InfraEnv CR to configure kernel arguments:

1. Begin an SSH session with the target host:

   $ ssh -i /path/to/privatekey core@<host_name>

2. View the system’s kernel arguments by using the following command:

   $ cat /proc/cmdline

Procedure

1. Create a ClusterImageSet for each specific cluster version to be deployed, for example clusterImageSet-4.15.yaml. A ClusterImageSet has the following format:

   apiVersion: hive.openshift.io/v1
   kind: ClusterImageSet
   metadata:
     name: openshift-4.15.0 1
   spec:
      releaseImage: quay.io/openshift-release-dev/ocp-release:4.15.0-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-4.15.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 7.2. 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 GitOps ZTP pipeline uses to customize the cluster installs.

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

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

   Note

   The subdirectory names /custom-manifest and /extra-manifest used throughout are example names only. There is no requirement to use these names and no restriction on how you name these subdirectories. In this example /extra-manifest refers to the Git subdirectory that stores the contents of /extra-manifest from the ztp-site-generate container.

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

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

   clusters:
   - clusterName: "example-sno"
     networkType: "OVNKubernetes"
     extraManifests:
       searchPaths:
         - extra-manifest/ 1
         - custom-manifest/ 2

   1

   Folder for manifests copied from the ztp-site-generate container.

   2

   Folder for custom manifests.

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

Procedure

1. To prevent the GitOps 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-4.15"
     sshPublicKey: "<ssh_public_key>"
     clusters:
   - clusterName: "site1-sno-du"
     extraManifests:
       filter:
         exclude:
           - 03-sctp-machine-config-worker.yaml

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

3. Optional: To prevent the GitOps 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 GitOps 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. Update the SiteConfig CR to include the bmac.agent-install.openshift.io/remove-agent-and-node-on-delete=true annotation and push the changes to the Git repository:

   apiVersion: ran.openshift.io/v1
   kind: SiteConfig
   metadata:
     name: "cnfdf20"
     namespace: "cnfdf20"
   spec:
     clusters:
       nodes:
       - hostname: node6
         role: "worker"
         crAnnotations:
           add:
             BareMetalHost:
               bmac.agent-install.openshift.io/remove-agent-and-node-on-delete: true
   # ...

2. Verify that the BareMetalHost object is annotated by running the following command:

   oc get bmh -n <managed-cluster-namespace> <bmh-object> -ojsonpath='{.metadata}' | jq -r '.annotations["bmac.agent-install.openshift.io/remove-agent-and-node-on-delete"]'

   Example output

   true

3. Suppress the generation of the BareMetalHost CR by updating the SiteConfig CR to include the crSuppression.BareMetalHost annotation:

   apiVersion: ran.openshift.io/v1
   kind: SiteConfig
   metadata:
     name: "cnfdf20"
     namespace: "cnfdf20"
   spec:
     clusters:
     - nodes:
       - hostName: node6
         role: "worker"
         crSuppression:
         - BareMetalHost
   # ...

4. Push the changes to the Git repository and wait for deprovisioning to start. The status of the BareMetalHost CR should change to deprovisioning. Wait for the BareMetalHost to finish deprovisioning, and be fully deleted.

Verification

1. Verify that the BareMetalHost and Agent CRs for the worker node have been deleted from the hub cluster by running the following commands:

   $ oc get bmh -n <cluster-ns>

   $ oc get agent -n <cluster-ns>

2. Verify that the node record has been deleted from the spoke cluster by running the following command:

   $ oc get nodes

   Note

   If you are working with secrets, deleting a secret too early can cause an issue because ArgoCD needs the secret to complete resynchronization after deletion. Delete the secret only after the node cleanup, when the current ArgoCD synchronization is complete.

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 GitOps 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:v4.15.1 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 subdirectory named source-crs in the directory that contains the kustomization.yaml file for the PolicyGenTemplate custom resource (CR).

2. Add your user-provided CRs to the source-crs subdirectory, as shown in the following example:

   example
   └── policygentemplates
       ├── dev.yaml
       ├── kustomization.yaml
       ├── mec-edge-sno1.yaml
       ├── sno.yaml
       └── source-crs 1
           ├── PaoCatalogSource.yaml
           ├── PaoSubscription.yaml
           ├── custom-crs
           |   ├── apiserver-config.yaml
           |   └── disable-nic-lldp.yaml
           └── elasticsearch
               ├── ElasticsearchNS.yaml
               └── ElasticsearchOperatorGroup.yaml

   1

   The source-crs subdirectory must be in the same directory as the kustomization.yaml file.

3. Update the required PolicyGenTemplate CRs to include references to the content you added in the source-crs/custom-crs and source-crs/elasticsearch directories. For example:

   apiVersion: ran.openshift.io/v1
   kind: PolicyGenTemplate
   metadata:
     name: "group-dev"
     namespace: "ztp-clusters"
   spec:
     bindingRules:
       dev: "true"
     mcp: "master"
     sourceFiles:
       # These policies/CRs come from the internal container Image
       #Cluster Logging
       - fileName: ClusterLogNS.yaml
         remediationAction: inform
         policyName: "group-dev-cluster-log-ns"
       - fileName: ClusterLogOperGroup.yaml
         remediationAction: inform
         policyName: "group-dev-cluster-log-operator-group"
       - fileName: ClusterLogSubscription.yaml
         remediationAction: inform
         policyName: "group-dev-cluster-log-sub"
       #Local Storage Operator
       - fileName: StorageNS.yaml
         remediationAction: inform
         policyName: "group-dev-lso-ns"
       - fileName: StorageOperGroup.yaml
         remediationAction: inform
         policyName: "group-dev-lso-operator-group"
       - fileName: StorageSubscription.yaml
         remediationAction: inform
         policyName: "group-dev-lso-sub"
       #These are custom local polices that come from the source-crs directory in the git repo
       # Performance Addon Operator
       - fileName: PaoSubscriptionNS.yaml
         remediationAction: inform
         policyName: "group-dev-pao-ns"
       - fileName: PaoSubscriptionCatalogSource.yaml
         remediationAction: inform
         policyName: "group-dev-pao-cat-source"
         spec:
           image: <image_URL_here>
       - fileName: PaoSubscription.yaml
         remediationAction: inform
         policyName: "group-dev-pao-sub"
       #Elasticsearch Operator
       - fileName: elasticsearch/ElasticsearchNS.yaml 1
         remediationAction: inform
         policyName: "group-dev-elasticsearch-ns"
       - fileName: elasticsearch/ElasticsearchOperatorGroup.yaml
         remediationAction: inform
         policyName: "group-dev-elasticsearch-operator-group"
       #Custom Resources
       - fileName: custom-crs/apiserver-config.yaml 2
         remediationAction: inform
         policyName: "group-dev-apiserver-config"
       - fileName: custom-crs/disable-nic-lldp.yaml
         remediationAction: inform
         policyName: "group-dev-disable-nic-lldp"

   1 2

   Set fileName to include the relative path to the file from the /source-crs parent directory.

4. Commit the PolicyGenTemplate change in Git, and then push to the Git repository that is monitored by the GitOps ZTP Argo CD policies application.

5. Update the ClusterGroupUpgrade CR to include the changed PolicyGenTemplate and save it as cgu-test.yaml. The following example shows a generated cgu-test.yaml file.

   apiVersion: ran.openshift.io/v1alpha1
   kind: ClusterGroupUpgrade
   metadata:
     name: custom-source-cr
     namespace: ztp-clusters
   spec:
     managedPolicies:
       - group-dev-config-policy
     enable: true
     clusters:
     - cluster1
     remediationStrategy:
       maxConcurrency: 2
       timeout: 240

6. Apply the updated ClusterGroupUpgrade CR by running the following command:

   $ oc apply -f cgu-test.yaml

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. To configure LVM Storage for new managed clusters, add the following YAML to spec.sourceFiles in the common-ranGen.yaml file:

   - fileName: StorageLVMOSubscriptionNS.yaml
     policyName: subscription-policies
   - fileName: StorageLVMOSubscriptionOperGroup.yaml
     policyName: subscription-policies
   - fileName: StorageLVMOSubscription.yaml
     spec:
       name: lvms-operator
       channel: stable-4.15
     policyName: subscription-policies

   Note

   The Storage LVMO subscription is deprecated. In future releases of OpenShift Container Platform, the storage LVMO subscription will not be available. Instead, you must use the Storage LVMS subscription.

   In OpenShift Container Platform 4.15, you can use the Storage LVMS subscription instead of the LVMO subscription. The LVMS subscription does not require manual overrides in the common-ranGen.yaml file. Add the following YAML to spec.sourceFiles in the common-ranGen.yaml file to use the Storage LVMS subscription:

   - fileName: StorageLVMSubscriptionNS.yaml
     policyName: subscription-policies
   - fileName: StorageLVMSubscriptionOperGroup.yaml
     policyName: subscription-policies
   - fileName: StorageLVMSubscription.yaml
     policyName: subscription-policies

2. Add the LVMCluster CR to spec.sourceFiles in your specific group or individual site configuration file. For example, in the group-du-sno-ranGen.yaml file, add the following:

   - fileName: StorageLVMCluster.yaml
     policyName: "lvms-config" 1
     spec:
       storage:
         deviceClasses:
         - name: vg1
           thinPoolConfig:
             name: thin-pool-1
             sizePercent: 90
             overprovisionRatio: 10

   1

   This example configuration creates a volume group (vg1) with all the available devices, except the disk where OpenShift Container Platform is installed. A thin-pool logical volume is also created.

3. Merge any other required changes and files with your custom site repository.
4. Commit the PolicyGenTemplate changes in Git, and then push the changes to your site configuration repository to deploy LVM Storage to new sites using GitOps ZTP.

Procedure

1. In the OpenShift Container Platform web console, navigate to Operators → OperatorHub.
2. Search for the Topology Aware Lifecycle Manager from the list of available Operators, and then click Install.
3. Keep the default selection of Installation mode ["All namespaces on the cluster (default)"] and Installed Namespace ("openshift-operators") to ensure that the Operator is installed properly.
4. Click Install.

1. Navigate to the Operators → Installed Operators page.
2. Check that the Operator is installed in the All Namespaces namespace and its status is Succeeded.

1. Navigate to the Operators → Installed Operators page and inspect the Status column for any errors or failures.
2. Navigate to the Workloads → Pods page and check the logs in any containers in the cluster-group-upgrades-controller-manager pod that are reporting issues.

Procedure

1. Create a Subscription CR:

   1. Define the Subscription CR and save the YAML file, for example, talm-subscription.yaml:

      apiVersion: operators.coreos.com/v1alpha1
      kind: Subscription
      metadata:
        name: openshift-topology-aware-lifecycle-manager-subscription
        namespace: openshift-operators
      spec:
        channel: "stable"
        name: topology-aware-lifecycle-manager
        source: redhat-operators
        sourceNamespace: openshift-marketplace

   2. Create the Subscription CR by running the following command:

      $ oc create -f talm-subscription.yaml

Verification

1. Verify that the installation succeeded by inspecting the CSV resource:

   $ oc get csv -n openshift-operators

   Example output

   NAME                                                   DISPLAY                            VERSION               REPLACES                           PHASE
   topology-aware-lifecycle-manager.4.15.x   Topology Aware Lifecycle Manager   4.15.x                                      Succeeded

2. Verify that the TALM is up and running:

   $ oc get deploy -n openshift-operators

   Example output

   NAMESPACE                                          NAME                                             READY   UP-TO-DATE   AVAILABLE   AGE
   openshift-operators                                cluster-group-upgrades-controller-manager        1/1     1            1           14s