Installing a cluster on Nutanix in a restricted network

In OKD 4, you can install a cluster on Nutanix infrastructure in a restricted network by creating an internal mirror of the installation release content.

Prerequisites

• You have reviewed details about the OKD installation and update processes.

• The installation program requires access to port 9440 on Prism Central and Prism Element. You verified that port 9440 is accessible.

• If you use a firewall, you have met these prerequisites:

  • You confirmed that port 9440 is accessible. Control plane nodes must be able to reach Prism Central and Prism Element on port 9440 for the installation to succeed.

  • You configured the firewall to grant access to the sites that OKD requires. This includes the use of Telemetry.

• If your Nutanix environment is using the default self-signed SSL/TLS certificate, replace it with a certificate that is signed by a CA. The installation program requires a valid CA-signed certificate to access to the Prism Central API. For more information about replacing the self-signed certificate, see the Nutanix AOS Security Guide.

  If your Nutanix environment uses an internal CA to issue certificates, you must configure a cluster-wide proxy as part of the installation process. For more information, see Configuring a custom PKI.

  Use 2048-bit certificates. The installation fails if you use 4096-bit certificates with Prism Central 2022.x.

• You have a container image registry, such as Red Hat Quay. If you do not already have a registry, you can create a mirror registry using mirror registry for Red Hat OpenShift.

• You have used the oc-mirror OpenShift CLI (oc) plugin to mirror all of the required OKD content and other images, including the Nutanix CSI Operator, to your mirror registry.

  Because the installation media is on the mirror host, you can use that computer to complete all installation steps.

About installations in restricted networks

In OKD 4, you can perform an installation that does not require an active connection to the internet to obtain software components. Restricted network installations can be completed using installer-provisioned infrastructure or user-provisioned infrastructure, depending on the cloud platform to which you are installing the cluster.

If you choose to perform a restricted network installation on a cloud platform, you still require access to its cloud APIs. Some cloud functions, like Amazon Web Service’s Route 53 DNS and IAM services, require internet access. Depending on your network, you might require less internet access for an installation on bare metal hardware, Nutanix, or on VMware vSphere.

To complete a restricted network installation, you must create a registry that mirrors the contents of the OpenShift image registry and contains the installation media. You can create this registry on a mirror host, which can access both the internet and your closed network, or by using other methods that meet your restrictions.

Additional limits

Clusters in restricted networks have the following additional limitations and restrictions:

• The ClusterVersion status includes an Unable to retrieve available updates error.

• By default, you cannot use the contents of the Developer Catalog because you cannot access the required image stream tags.

Generating a key pair for cluster node SSH access

During an OKD installation, you can provide an SSH public key to the installation program. The key is passed to the Fedora CoreOS (FCOS) nodes through their Ignition config files and is used to authenticate SSH access to the nodes. The key is added to the ~/.ssh/authorized_keys list for the core user on each node, which enables password-less authentication.

After the key is passed to the nodes, you can use the key pair to SSH in to the FCOS nodes as the user core. To access the nodes through SSH, the private key identity must be managed by SSH for your local user.

If you want to SSH in to your cluster nodes to perform installation debugging or disaster recovery, you must provide the SSH public key during the installation process. The ./openshift-install gather command also requires the SSH public key to be in place on the cluster nodes.

Procedure

1. If you do not have an existing SSH key pair on your local machine to use for authentication onto your cluster nodes, create one. For example, on a computer that uses a Linux operating system, run the following command:

   $ ssh-keygen -t ed25519 -N '' -f <path>/<file_name> (1)

   1	Specify the path and file name, such as ~/.ssh/id_ed25519, of the new SSH key. If you have an existing key pair, ensure your public key is in the your ~/.ssh directory.

   If you plan to install an OKD cluster that uses the Fedora cryptographic libraries that have been submitted to NIST for FIPS 140-2/140-3 Validation on only the x86_64, ppc64le, and s390x architectures, do not create a key that uses the ed25519 algorithm. Instead, create a key that uses the rsa or ecdsa algorithm.

2. View the public SSH key:

   $ cat <path>/<file_name>.pub

   For example, run the following to view the ~/.ssh/id_ed25519.pub public key:

   $ cat ~/.ssh/id_ed25519.pub

3. Add the SSH private key identity to the SSH agent for your local user, if it has not already been added. SSH agent management of the key is required for password-less SSH authentication onto your cluster nodes, or if you want to use the ./openshift-install gather command.

   On some distributions, default SSH private key identities such as ~/.ssh/id_rsa and ~/.ssh/id_dsa are managed automatically.

   1. If the ssh-agent process is not already running for your local user, start it as a background task:

      $ eval "$(ssh-agent -s)"

      Example output

      Agent pid 31874

      If your cluster is in FIPS mode, only use FIPS-compliant algorithms to generate the SSH key. The key must be either RSA or ECDSA.

4. Add your SSH private key to the ssh-agent:

   $ ssh-add <path>/<file_name> (1)

   1	Specify the path and file name for your SSH private key, such as ~/.ssh/id_ed25519

   Example output

   Identity added: /home/<you>/<path>/<file_name> (<computer_name>)

Next steps

• When you install OKD, provide the SSH public key to the installation program.

Adding Nutanix root CA certificates to your system trust

Because the installation program requires access to the Prism Central API, you must add your Nutanix trusted root CA certificates to your system trust before you install an OKD cluster.

Procedure

1. From the Prism Central web console, download the Nutanix root CA certificates.

2. Extract the compressed file that contains the Nutanix root CA certificates.

3. Add the files for your operating system to the system trust. For example, on a Fedora operating system, run the following command:

   # cp certs/lin/* /etc/pki/ca-trust/source/anchors

4. Update your system trust. For example, on a Fedora operating system, run the following command:

   # update-ca-trust extract

Downloading the RHCOS cluster image

Prism Central requires access to the Fedora CoreOS (FCOS) image to install the cluster. You can use the installation program to locate and download the FCOS image and make it available through an internal HTTP server or Nutanix Objects.

Prerequisites

• Obtain the OKD installation program and the pull secret for your cluster. For a restricted network installation, these files are on your mirror host.

Procedure

1. Change to the directory that contains the installation program and run the following command:

   $ ./openshift-install coreos print-stream-json

2. Use the output of the command to find the location of the Nutanix image, and click the link to download it.

   Example output

   "nutanix": {
     "release": "411.86.202210041459-0",
     "formats": {
       "qcow2": {
         "disk": {
           "location": "https://rhcos.mirror.openshift.com/art/storage/releases/rhcos-4.11/411.86.202210041459-0/x86_64/rhcos-411.86.202210041459-0-nutanix.x86_64.qcow2",
           "sha256": "42e227cac6f11ac37ee8a2f9528bb3665146566890577fd55f9b950949e5a54b"

3. Make the image available through an internal HTTP server or Nutanix Objects.

4. Note the location of the downloaded image. You update the platform section in the installation configuration file (install-config.yaml) with the image’s location before deploying the cluster.

Snippet of an install-config.yaml file that specifies the FCOS image

platform:
  nutanix:
    clusterOSImage: http://example.com/images/rhcos-411.86.202210041459-0-nutanix.x86_64.qcow2

Creating the installation configuration file

You can customize the OKD cluster you install on Nutanix.

Prerequisites

• You have the OKD installation program and the pull secret for your cluster. For a restricted network installation, these files are on your mirror host.

• You have the imageContentSourcePolicy.yaml file that was created when you mirrored your registry.

• You have the location of the Fedora CoreOS (FCOS) image you download.

• You have obtained the contents of the certificate for your mirror registry.

• You have retrieved a Fedora CoreOS (FCOS) image and uploaded it to an accessible location.

• You have verified that you have met the Nutanix networking requirements. For more information, see “Preparing to install on Nutanix”.

Procedure

1. Create the install-config.yaml file.

   1. Change to the directory that contains the installation program and run the following command:

      $ ./openshift-install create install-config --dir <installation_directory> (1)

      1	For <installation_directory>, specify the directory name to store the files that the installation program creates.

      When specifying the directory:

      • Verify that the directory has the execute permission. This permission is required to run Terraform binaries under the installation directory.

      • Use an empty directory. Some installation assets, such as bootstrap X.509 certificates, have short expiration intervals, therefore you must not reuse an installation directory. If you want to reuse individual files from another cluster installation, you can copy them into your directory. However, the file names for the installation assets might change between releases. Use caution when copying installation files from an earlier OKD version.

        Always delete the ~/.powervs directory to avoid reusing a stale configuration. Run the following command: $ rm -rf ~/.powervs

   2. At the prompts, provide the configuration details for your cloud:

      1. Optional: Select an SSH key to use to access your cluster machines.

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

      2. Select nutanix as the platform to target.

      3. Enter the Prism Central domain name or IP address.

      4. Enter the port that is used to log into Prism Central.

      5. Enter the credentials that are used to log into Prism Central.

         The installation program connects to Prism Central.

      6. Select the Prism Element that will manage the OKD cluster.

      7. Select the network subnet to use.

      8. Enter the virtual IP address that you configured for control plane API access.

      9. Enter the virtual IP address that you configured for cluster ingress.

      10. Enter the base domain. This base domain must be the same one that you configured in the DNS records.

      11. Enter a descriptive name for your cluster.

          The cluster name you enter must match the cluster name you specified when configuring the DNS records.

1. In the install-config.yaml file, set the value of platform.nutanix.clusterOSImage to the image location or name. For example:

   platform:
     nutanix:
         clusterOSImage: http://mirror.example.com/images/rhcos-47.83.202103221318-0-nutanix.x86_64.qcow2

2. Edit the install-config.yaml file to give the additional information that is required for an installation in a restricted network.

   1. Update the pullSecret value to contain the authentication information for your registry:

      pullSecret: '{"auths":{"<mirror_host_name>:5000": {"auth": "<credentials>","email": "you@example.com"}}}'

      For <mirror_host_name>, specify the registry domain name that you specified in the certificate for your mirror registry, and for <credentials>, specify the base64-encoded user name and password for your mirror registry.

   2. Add the additionalTrustBundle parameter and value.

      additionalTrustBundle: |
        -----BEGIN CERTIFICATE-----
        ZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZ
        -----END CERTIFICATE-----

      The value must be the contents of the certificate file that you used for your mirror registry. The certificate file can be an existing, trusted certificate authority, or the self-signed certificate that you generated for the mirror registry.

   3. Add the image content resources, which resemble the following YAML excerpt:

      imageContentSources:
      - mirrors:
        - <mirror_host_name>:5000/<repo_name>/release
        source: quay.io/openshift-release-dev/ocp-release
      - mirrors:
        - <mirror_host_name>:5000/<repo_name>/release
        source: registry.redhat.io/ocp/release

      For these values, use the imageContentSourcePolicy.yaml file that was created when you mirrored the registry.

3. Optional: Update one or more of the default configuration parameters in the install.config.yaml file to customize the installation.

   For more information about the parameters, see “Installation configuration parameters”.

   If you are installing a three-node cluster, be sure to set the compute.replicas parameter to 0. This ensures that cluster’s control planes are schedulable. For more information, see “Installing a three-node cluster on {platform}”.

4. Back up the install-config.yaml file so that you can use it to install multiple clusters.

   The install-config.yaml file is consumed during the installation process. If you want to reuse the file, you must back it up now.

Additional resources

• Installation configuration parameters for Nutanix

Sample customized install-config.yaml file for Nutanix

You can customize the install-config.yaml file to specify more details about your OKD cluster’s platform or modify the values of the required parameters.

apiVersion: v1
baseDomain: example.com (1)
compute: (2)
- hyperthreading: Enabled (3)
  name: worker
  replicas: 3
  platform:
    nutanix: (4)
      cpus: 2
      coresPerSocket: 2
      memoryMiB: 8196
      osDisk:
        diskSizeGiB: 120
      categories: (5)
      - key: <category_key_name>
        value: <category_value>
controlPlane: (2)
  hyperthreading: Enabled (3)
  name: master
  replicas: 3
  platform:
    nutanix: (4)
      cpus: 4
      coresPerSocket: 2
      memoryMiB: 16384
      osDisk:
        diskSizeGiB: 120
      categories: (5)
      - key: <category_key_name>
        value: <category_value>
metadata:
  creationTimestamp: null
  name: test-cluster (1)
networking:
  clusterNetwork:
  - cidr: 10.128.0.0/14
    hostPrefix: 23
  machineNetwork:
  - cidr: 10.0.0.0/16
  networkType: OVNKubernetes (6)
  serviceNetwork:
  - 172.30.0.0/16
platform:
  nutanix:
    apiVIP: 10.40.142.7 (1)
    ingressVIP: 10.40.142.8 (1)
    defaultMachinePlatform:
      bootType: Legacy
      categories: (5)
      - key: <category_key_name>
        value: <category_value>
      project: (7)
        type: name
        name: <project_name>
    prismCentral:
      endpoint:
        address: your.prismcentral.domainname (1)
        port: 9440 (1)
      password: <password> (1)
      username: <username> (1)
    prismElements:
    - endpoint:
        address: your.prismelement.domainname
        port: 9440
      uuid: 0005b0f1-8f43-a0f2-02b7-3cecef193712
    subnetUUIDs:
    - c7938dc6-7659-453e-a688-e26020c68e43
    clusterOSImage: http://example.com/images/rhcos-47.83.202103221318-0-nutanix.x86_64.qcow2 (8)
credentialsMode: Manual
publish: External
pullSecret: '{"auths":{"<local_registry>": {"auth": "<credentials>","email": "you@example.com"}}}' (9)
sshKey: ssh-ed25519 AAAA... (10)
additionalTrustBundle: | (11)
  -----BEGIN CERTIFICATE-----
  ZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZ
  -----END CERTIFICATE-----
imageContentSources: (12)
- mirrors:
  - <local_registry>/<local_repository_name>/release
  source: quay.io/openshift-release-dev/ocp-release
- mirrors:
  - <local_registry>/<local_repository_name>/release
  source: quay.io/openshift-release-dev/ocp-v4.0-art-dev

Configuring the cluster-wide proxy during installation

Production environments can deny direct access to the internet and instead have an HTTP or HTTPS proxy available. You can configure a new OKD cluster to use a proxy by configuring the proxy settings in the install-config.yaml file.

Prerequisites

• You have an existing install-config.yaml file.

• You reviewed the sites that your cluster requires access to and determined whether any of them need to bypass the proxy. By default, all cluster egress traffic is proxied, including calls to hosting cloud provider APIs. You added sites to the Proxy object’s spec.noProxy field to bypass the proxy if necessary.

  The Proxy object status.noProxy field is populated with the values of the networking.machineNetwork[].cidr, networking.clusterNetwork[].cidr, and networking.serviceNetwork[] fields from your installation configuration. For installations on Amazon Web Services (AWS), Google Cloud Platform (GCP), Microsoft Azure, and OpenStack, the Proxy object status.noProxy field is also populated with the instance metadata endpoint (169.254.169.254).

Procedure

1. Edit your install-config.yaml file and add the proxy settings. For example:

   apiVersion: v1
   baseDomain: my.domain.com
   proxy:
     httpProxy: http://<username>:<pswd>@<ip>:<port> (1)
     httpsProxy: https://<username>:<pswd>@<ip>:<port> (2)
     noProxy: example.com (3)
   additionalTrustBundle: | (4)
       -----BEGIN CERTIFICATE-----
       <MY_TRUSTED_CA_CERT>
       -----END CERTIFICATE-----
   additionalTrustBundlePolicy: <policy_to_add_additionalTrustBundle> (5)

   1	A proxy URL to use for creating HTTP connections outside the cluster. The URL scheme must be http.
   2	A proxy URL to use for creating HTTPS connections outside the cluster.
   3	A comma-separated list of destination domain names, IP addresses, or other network CIDRs to exclude from proxying. Preface a domain with . to match subdomains only. For example, .y.com matches x.y.com, but not y.com. Use * to bypass the proxy for all destinations.
   4	If provided, the installation program generates a config map that is named user-ca-bundle in the openshift-config namespace to hold the additional CA certificates. If you provide additionalTrustBundle and at least one proxy setting, the Proxy object is configured to reference the user-ca-bundle config map in the trustedCA field. The Cluster Network Operator then creates a trusted-ca-bundle config map that merges the contents specified for the trustedCA parameter with the FCOS trust bundle. The additionalTrustBundle field is required unless the proxy’s identity certificate is signed by an authority from the FCOS trust bundle.
   5	Optional: The policy to determine the configuration of the Proxy object to reference the user-ca-bundle config map in the trustedCA field. The allowed values are Proxyonly and Always. Use Proxyonly to reference the user-ca-bundle config map only when http/https proxy is configured. Use Always to always reference the user-ca-bundle config map. The default value is Proxyonly.

   The installation program does not support the proxy readinessEndpoints field.

   If the installer times out, restart and then complete the deployment by using the wait-for command of the installer. For example: $ ./openshift-install wait-for install-complete —log-level debug

2. Save the file and reference it when installing OKD.

The installation program creates a cluster-wide proxy that is named cluster that uses the proxy settings in the provided install-config.yaml file. If no proxy settings are provided, a cluster Proxy object is still created, but it will have a nil spec.

Installing the OpenShift CLI by downloading the binary

You can install the OpenShift CLI (oc) to interact with OKD from a command-line interface. You can install oc on Linux, Windows, or macOS.

Installing the OpenShift CLI on Linux

You can install the OpenShift CLI (oc) binary on Linux by using the following procedure.

Procedure

1. Navigate to https://mirror.openshift.com/pub/openshift-v4/clients/oc/latest/ and choose the folder for your operating system and architecture.

2. Download oc.tar.gz.

3. Unpack the archive:

   $ tar xvf <file>

4. Place the oc binary in a directory that is on your PATH.

   To check your PATH, execute the following command:

   $ echo $PATH

Verification

• After you install the OpenShift CLI, it is available using the oc command:

  $ oc <command>

Installing the OpenShift CLI on Windows

You can install the OpenShift CLI (oc) binary on Windows by using the following procedure.

Procedure

1. Navigate to https://mirror.openshift.com/pub/openshift-v4/clients/oc/latest/ and choose the folder for your operating system and architecture.

2. Download oc.zip.

3. Unzip the archive with a ZIP program.

4. Move the oc binary to a directory that is on your PATH.

   To check your PATH, open the command prompt and execute the following command:

   C:\> path

Verification

• After you install the OpenShift CLI, it is available using the oc command:

  C:\> oc <command>

Installing the OpenShift CLI on macOS

You can install the OpenShift CLI (oc) binary on macOS by using the following procedure.

Procedure

1. Navigate to https://mirror.openshift.com/pub/openshift-v4/clients/oc/latest/ and choose the folder for your operating system and architecture.

2. Download oc.tar.gz.

3. Unpack and unzip the archive.

4. Move the oc binary to a directory on your PATH.

   To check your PATH, open a terminal and execute the following command:

   $ echo $PATH

Verification

• After you install the OpenShift CLI, it is available using the oc command:

  $ oc <command>

Configuring IAM for Nutanix

Installing the cluster requires that the Cloud Credential Operator (CCO) operate in manual mode. While the installation program configures the CCO for manual mode, you must specify the identity and access management secrets.

Prerequisites

• You have configured the ccoctl binary.

• You have an install-config.yaml file.

Procedure

1. Create a YAML file that contains the credentials data in the following format:

   Credentials data format

   credentials:
   - type: basic_auth (1)
     data:
       prismCentral: (2)
         username: <username_for_prism_central>
         password: <password_for_prism_central>
       prismElements: (3)
       - name: <name_of_prism_element>
         username: <username_for_prism_element>
         password: <password_for_prism_element>

   1	Specify the authentication type. Only basic authentication is supported.
   2	Specify the Prism Central credentials.
   3	Optional: Specify the Prism Element credentials.

2. Set a $RELEASE_IMAGE variable with the release image from your installation file by running the following command:

   $ RELEASE_IMAGE=$(./openshift-install version | awk '/release image/ {print $3}')

3. Extract the list of CredentialsRequest custom resources (CRs) from the OKD release image by running the following command:

   $ oc adm release extract \
     --from=$RELEASE_IMAGE \
     --credentials-requests \
     --included \(1)
     --install-config=<path_to_directory_with_installation_configuration>/install-config.yaml \(2)
     --to=<path_to_directory_for_credentials_requests> (3)

   1	The —included parameter includes only the manifests that your specific cluster configuration requires.
   2	Specify the location of the install-config.yaml file.
   3	Specify the path to the directory where you want to store the CredentialsRequest objects. If the specified directory does not exist, this command creates it.

   Sample CredentialsRequest object

     apiVersion: cloudcredential.openshift.io/v1
     kind: CredentialsRequest
     metadata:
       annotations:
         include.release.openshift.io/self-managed-high-availability: "true"
       labels:
         controller-tools.k8s.io: "1.0"
       name: openshift-machine-api-nutanix
       namespace: openshift-cloud-credential-operator
     spec:
       providerSpec:
         apiVersion: cloudcredential.openshift.io/v1
         kind: NutanixProviderSpec
       secretRef:
         name: nutanix-credentials
         namespace: openshift-machine-api

4. Use the ccoctl tool to process all CredentialsRequest objects by running the following command:

   $ ccoctl nutanix create-shared-secrets \
     --credentials-requests-dir=<path_to_credentials_requests_directory> \(1)
     --output-dir=<ccoctl_output_dir> \(2)
     --credentials-source-filepath=<path_to_credentials_file> (3)

   1	Specify the path to the directory that contains the files for the component CredentialsRequests objects.
   2	Optional: Specify the directory in which you want the ccoctl utility to create objects. By default, the utility creates objects in the directory in which the commands are run.
   3	Optional: Specify the directory that contains the credentials data YAML file. By default, ccoctl expects this file to be in <home_directory>/.nutanix/credentials.

5. Edit the install-config.yaml configuration file so that the credentialsMode parameter is set to Manual.

   Example install-config.yaml configuration file

   apiVersion: v1
   baseDomain: cluster1.example.com
   credentialsMode: Manual (1)
   ...

   1	Add this line to set the credentialsMode parameter to Manual.

6. Create the installation manifests by running the following command:

   $ openshift-install create manifests --dir <installation_directory> (1)

   1	Specify the path to the directory that contains the install-config.yaml file for your cluster.

7. Copy the generated credential files to the target manifests directory by running the following command:

   $ cp <ccoctl_output_dir>/manifests/*credentials.yaml ./<installation_directory>/manifests

Verification

• Ensure that the appropriate secrets exist in the manifests directory.

  $ ls ./<installation_directory>/manifests

  Example output

  cluster-config.yaml
  cluster-dns-02-config.yml
  cluster-infrastructure-02-config.yml
  cluster-ingress-02-config.yml
  cluster-network-01-crd.yml
  cluster-network-02-config.yml
  cluster-proxy-01-config.yaml
  cluster-scheduler-02-config.yml
  cvo-overrides.yaml
  kube-cloud-config.yaml
  kube-system-configmap-root-ca.yaml
  machine-config-server-tls-secret.yaml
  openshift-config-secret-pull-secret.yaml
  openshift-cloud-controller-manager-nutanix-credentials-credentials.yaml
  openshift-machine-api-nutanix-credentials-credentials.yaml

Deploying the cluster

You can install OKD on a compatible cloud platform.

Prerequisites

• You have the OKD installation program and the pull secret for your cluster.

• You have verified that the cloud provider account on your host has the correct permissions to deploy the cluster. An account with incorrect permissions causes the installation process to fail with an error message that displays the missing permissions.

Procedure

• Change to the directory that contains the installation program and initialize the cluster deployment:

  $ ./openshift-install create cluster --dir <installation_directory> \ (1)
      --log-level=info (2)

  1	For <installation_directory>, specify the location of your customized ./install-config.yaml file.
  2	To view different installation details, specify warn, debug, or error instead of info.

Verification

When the cluster deployment completes successfully:

• The terminal displays directions for accessing your cluster, including a link to the web console and credentials for the kubeadmin user.

• Credential information also outputs to <installation_directory>/.openshift_install.log.

Example output

...
INFO Install complete!
INFO To access the cluster as the system:admin user when using 'oc', run 'export KUBECONFIG=/home/myuser/install_dir/auth/kubeconfig'
INFO Access the OpenShift web-console here: https://console-openshift-console.apps.mycluster.example.com
INFO Login to the console with user: "kubeadmin", and password: "password"
INFO Time elapsed: 36m22s

Post installation

Complete the following steps to complete the configuration of your cluster.

Disabling the default OperatorHub catalog sources

Operator catalogs that source content provided by Red Hat and community projects are configured for OperatorHub by default during an OKD installation. In a restricted network environment, you must disable the default catalogs as a cluster administrator.

Procedure

• Disable the sources for the default catalogs by adding disableAllDefaultSources: true to the OperatorHub object:

  $ oc patch OperatorHub cluster --type json \
      -p '[{"op": "add", "path": "/spec/disableAllDefaultSources", "value": true}]'

Installing the policy resources into the cluster

Mirroring the OKD content using the oc-mirror OpenShift CLI (oc) plugin creates resources, which include catalogSource-certified-operator-index.yaml and imageContentSourcePolicy.yaml.

• The ImageContentSourcePolicy resource associates the mirror registry with the source registry and redirects image pull requests from the online registries to the mirror registry.

• The CatalogSource resource is used by Operator Lifecycle Manager (OLM) to retrieve information about the available Operators in the mirror registry, which lets users discover and install Operators.

After you install the cluster, you must install these resources into the cluster.

Prerequisites

• You have mirrored the image set to the registry mirror in the disconnected environment.

• You have access to the cluster as a user with the cluster-admin role.

Procedure

1. Log in to the OpenShift CLI as a user with the cluster-admin role.

2. Apply the YAML files from the results directory to the cluster:

   $ oc apply -f ./oc-mirror-workspace/results-<id>/

Verification

1. Verify that the ImageContentSourcePolicy resources were successfully installed:

   $ oc get imagecontentsourcepolicy --all-namespaces

2. Verify that the CatalogSource resources were successfully installed:

   $ oc get catalogsource --all-namespaces

Configuring the default storage container

After you install the cluster, you must install the Nutanix CSI Operator and configure the default storage container for the cluster.

For more information, see the Nutanix documentation for installing the CSI Operator and configuring registry storage.

Additional resources

• About remote health monitoring

Next steps

• If necessary, see Opt out of remote health reporting

• If necessary, see Registering your disconnected cluster

• Customize your cluster