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This document provides steps to delete a Red Hat OpenShift Service on AWS (ROSA) cluster that uses the AWS Security Token Service (STS). After deleting your cluster, you can also delete the AWS Identity and Access Management (IAM) resources that are used by the cluster.

Prerequisites

  • If Red Hat OpenShift Service on AWS created a VPC, you must remove the following items from your cluster before you can successfully delete your cluster:

    • Network configurations, such as VPN configurations and VPC peering connections

    • Any additional services that were added to the VPC

If these configurations and services remain, the cluster does not delete properly.

Deleting a ROSA cluster and the cluster-specific IAM resources

You can delete a Red Hat OpenShift Service on AWS (ROSA) with AWS Security Token Service (STS) cluster by using the ROSA CLI (rosa) or Red Hat OpenShift Cluster Manager.

After deleting the cluster, you can clean up the cluster-specific Identity and Access Management (IAM) resources in your AWS account by using the ROSA CLI (rosa). The cluster-specific resources include the Operator roles and the OpenID Connect (OIDC) provider.

The cluster deletion must complete before you remove the IAM resources, because the resources are used in the cluster deletion and clean-up processes.

If add-ons are installed, the cluster deletion takes longer because add-ons are uninstalled before the cluster is deleted. The amount of time depends on the number and size of the add-ons.

Prerequisites
  • You have installed a ROSA cluster.

  • You have installed and configured the latest ROSA CLI (rosa) on your installation host.

Procedure
  1. Obtain the cluster ID, the Amazon Resource Names (ARNs) for the cluster-specific Operator roles and the endpoint URL for the OIDC provider:

    $ rosa describe cluster --cluster=<cluster_name> (1)
    1 Replace <cluster_name> with the name of your cluster.
    Example output
    Name:                       mycluster
    ID:                         1s3v4x39lhs8sm49m90mi0822o34544a (1)
    ...
    Operator IAM Roles: (2)
     - arn:aws:iam::<aws_account_id>:role/mycluster-x4q9-openshift-machine-api-aws-cloud-credentials
     - arn:aws:iam::<aws_account_id>:role/mycluster-x4q9-openshift-cloud-credential-operator-cloud-crede
     - arn:aws:iam::<aws_account_id>:role/mycluster-x4q9-openshift-image-registry-installer-cloud-creden
     - arn:aws:iam::<aws_account_id>:role/mycluster-x4q9-openshift-ingress-operator-cloud-credentials
     - arn:aws:iam::<aws_account_id>:role/mycluster-x4q9-openshift-cluster-csi-drivers-ebs-cloud-credent
     - arn:aws:iam::<aws_account_id>:role/mycluster-x4q9-openshift-cloud-network-config-controller-cloud
    State:                      ready
    Private:                    No
    Created:                    May 13 2022 11:26:15 UTC
    Details Page:               https://console.redhat.com/openshift/details/s/296kyEFwzoy1CREQicFRdZybrc0
    OIDC Endpoint URL:          https://rh-oidc.s3.us-east-1.amazonaws.com/1s5v4k39lhm8sm59m90mi0822o31844a (3)
    
    1 Lists the cluster ID.
    2 Specifies the ARNs for the cluster-specific Operator roles. For example, in the sample output the ARN for the role required by the Machine Config Operator is arn:aws:iam::<aws_account_id>:role/mycluster-x4q9-openshift-machine-api-aws-cloud-credentials.
    3 Specifies the endpoint URL for the cluster-specific OIDC provider.

    You require the cluster ID to delete the cluster-specific STS resources using the ROSA CLI (rosa) after the cluster is deleted.

  2. Delete the cluster:

    • To delete the cluster by using Red Hat OpenShift Cluster Manager:

      1. Navigate to OpenShift Cluster Manager.

      2. Click the Options menu kebab next to your cluster and select Delete cluster.

      3. Type the name of your cluster at the prompt and click Delete.

    • To delete the cluster using the ROSA CLI (rosa):

      1. Enter the following command to delete the cluster and watch the logs, replacing <cluster_name> with the name or ID of your cluster:

        $ rosa delete cluster --cluster=<cluster_name> --watch

        You must wait for the cluster deletion to complete before you remove the Operator roles and the OIDC provider. The cluster-specific Operator roles are required to clean-up the resources created by the OpenShift Operators. The Operators use the OIDC provider to authenticate.

  3. Delete the OIDC provider that the cluster Operators use to authenticate:

    $ rosa delete oidc-provider -c <cluster_id> --mode auto (1)
    1 Replace <cluster_id> with the ID of the cluster.

    You can use the -y option to automatically answer yes to the prompts.

  4. Delete the cluster-specific Operator IAM roles:

    $ rosa delete operator-roles -c <cluster_id> --mode auto (1)
    1 Replace <cluster_id> with the ID of the cluster.
Additional resources

Deleting the account-wide IAM resources

After you have deleted all Red Hat OpenShift Service on AWS (ROSA) with AWS Security Token Services (STS) clusters that depend on the account-wide AWS Identity and Access Management (IAM) resources, you can delete the account-wide resources.

If you no longer need to install a ROSA with STS cluster by using Red Hat OpenShift Cluster Manager, you can also delete the OpenShift Cluster Manager and user IAM roles.

The account-wide IAM roles and policies might be used by other ROSA clusters in the same AWS account. You must only remove the resources if they are not required by other clusters.

The OpenShift Cluster Manager and user IAM roles are required if you want to install and manage other ROSA clusters in the same AWS account by using OpenShift Cluster Manager. You must only remove the roles if you no longer need to install ROSA clusters in your account by using OpenShift Cluster Manager.

Deleting the account-wide IAM roles and policies

This section provides steps to delete the account-wide IAM roles and inline policies that you created for ROSA with STS deployments, along with the account-wide Operator policies. You can delete the account-wide AWS Identity and Access Management (IAM) roles and policies only after deleting all of the Red Hat OpenShift Service on AWS (ROSA) with AWS Security Token Services (STS) clusters that depend on them.

The account-wide IAM roles and policies might be used by other ROSA clusters in the same AWS account. You must only remove the roles if they are not required by other clusters.

Prerequisites
  • You have installed a ROSA cluster.

  • You have installed and configured the latest ROSA CLI (rosa) on your installation host.

Procedure
  1. Delete the account-wide roles:

    1. List the account-wide roles in your AWS account by using the ROSA CLI (rosa):

      $ rosa list account-roles
      Example output
      I: Fetching account roles
      ROLE NAME                           ROLE TYPE      ROLE ARN                                                           OPENSHIFT VERSION
      ManagedOpenShift-ControlPlane-Role  Control plane  arn:aws:iam::<aws_account_id>:role/ManagedOpenShift-ControlPlane-Role  4.10
      ManagedOpenShift-Installer-Role     Installer      arn:aws:iam::<aws_account_id>:role/ManagedOpenShift-Installer-Role     4.10
      ManagedOpenShift-Support-Role       Support        arn:aws:iam::<aws_account_id>:role/ManagedOpenShift-Support-Role       4.10
      ManagedOpenShift-Worker-Role        Worker         arn:aws:iam::<aws_account_id>:role/ManagedOpenShift-Worker-Role        4.10
    2. Delete the account-wide roles:

      $ rosa delete account-roles --prefix <prefix> --mode auto (1)
      1 You must include the --<prefix> argument. Replace <prefix> with the prefix of the account-wide roles to delete. If you did not specify a custom prefix when you created the account-wide roles, specify the default prefix, ManagedOpenShift.

      The account-wide IAM roles might be used by other ROSA clusters in the same AWS account. You must only remove the roles if they are not required by other clusters.

  2. Delete the account-wide in-line and Operator policies:

    1. Under the Policies page in the AWS IAM Console, filter the list of policies by the prefix that you specified when you created the account-wide roles and policies.

      If you did not specify a custom prefix when you created the account-wide roles, search for the default prefix, ManagedOpenShift.

    2. Delete the account-wide in-line policies and Operator policies by using the AWS IAM Console. For more information about deleting IAM policies by using the AWS IAM Console, see Deleting IAM policies in the AWS documentation.

      The account-wide in-line and Operator IAM policies might be used by other ROSA clusters in the same AWS account. You must only remove the roles if they are not required by other clusters.

Unlinking and deleting the OpenShift Cluster Manager and user IAM roles

If you installed a Red Hat OpenShift Service on AWS (ROSA) cluster by using Red Hat OpenShift Cluster Manager, you created OpenShift Cluster Manager and user Identity and Access Management (IAM) roles and linked them to your Red Hat organization. After deleting your cluster, you can unlink and delete the roles by using the ROSA CLI (rosa).

The OpenShift Cluster Manager and user IAM roles are required if you want to use OpenShift Cluster Manager to install and manage other ROSA clusters in the same AWS account. You must only remove the roles if you no longer need to use OpenShift Cluster Manager to install ROSA clusters.

Prerequisites
  • You created OpenShift Cluster Manager and user IAM roles and linked them to your Red Hat organization.

  • You have installed and configured the latest ROSA CLI (rosa) on your installation host.

  • You have organization administrator privileges in your Red Hat organization.

Procedure
  1. Unlink the OpenShift Cluster Manager IAM role from your Red Hat organization and delete the role:

    1. List the OpenShift Cluster Manager IAM roles in your AWS account:

      $ rosa list ocm-roles
      Example output
      I: Fetching ocm roles
      ROLE NAME                           ROLE ARN                                                                      LINKED  ADMIN
      ManagedOpenShift-OCM-Role-<red_hat_organization_external_id>  arn:aws:iam::<aws_account_id>:role/ManagedOpenShift-OCM-Role-<red_hat_organization_external_id>  Yes     Yes
    2. If your OpenShift Cluster Manager IAM role is listed as linked in the output of the preceding command, unlink the role from your Red Hat organization:

      $ rosa unlink ocm-role --role-arn <arn> (1)
      1 Replace <arn> with the Amazon Resource Name (ARN) for your OpenShift Cluster Manager IAM role. The ARN is specified in the output of the preceding command. In the preceding example, the ARN is in the format arn:aws:iam::<aws_account_external_id>:role/ManagedOpenShift-OCM-Role-<red_hat_organization_external_id>.
      Example output
      I: Unlinking OCM role
      ? Unlink the 'arn:aws:iam::<aws_account_id>:role/ManagedOpenShift-OCM-Role-<red_hat_organization_external_id>' role from organization '<red_hat_organization_id>'? Yes
      I: Successfully unlinked role-arn 'arn:aws:iam::<aws_account_id>:role/ManagedOpenShift-OCM-Role-<red_hat_organization_external_id>' from organization account '<red_hat_organization_id>'
    3. Delete the OpenShift Cluster Manager IAM role and policies:

      $ rosa delete ocm-role --role-arn <arn>
      Example output
      I: Deleting OCM role
      ? OCM Role ARN: arn:aws:iam::<aws_account_id>:role/ManagedOpenShift-OCM-Role-<red_hat_organization_external_id>
      ? Delete 'arn:aws:iam::<aws_account_id>:role/ManagedOpenShift-OCM-Role-<red_hat_organization_external_id>' ocm role? Yes
      ? OCM role deletion mode: auto (1)
      I: Successfully deleted the OCM role
      1 Specifies the deletion mode. You can use auto mode to automatically delete the OpenShift Cluster Manager IAM role and policies. In manual mode, the rosa CLI generates the aws commands needed to delete the role and policies. manual mode enables you to review the details before running the aws commands manually.
  2. Unlink the user IAM role from your Red Hat organization and delete the role:

    1. List the user IAM roles in your AWS account:

      $ rosa list user-roles
      Example output
      I: Fetching user roles
      ROLE NAME                                  ROLE ARN                                                                  LINKED
      ManagedOpenShift-User-<ocm_user_name>-Role  arn:aws:iam::<aws_account_id>:role/ManagedOpenShift-User-<ocm_user_name>-Role  Yes
    2. If your user IAM role is listed as linked in the output of the preceding command, unlink the role from your Red Hat organization:

      $ rosa unlink user-role --role-arn <arn> (1)
      1 Replace <arn> with the Amazon Resource Name (ARN) for your user IAM role. The ARN is specified in the output of the preceding command. In the preceding example, the ARN is in the format arn:aws:iam::<aws_account_id>:role/ManagedOpenShift-User-<ocm_user_name>-Role.
      Example output
      I: Unlinking user role
      ? Unlink the 'arn:aws:iam::<aws_account_id>:role/ManagedOpenShift-User-<ocm_user_name>-Role' role from the current account '<ocm_user_account_id>'? Yes
      I: Successfully unlinked role ARN 'arn:aws:iam::<aws_account_id>:role/ManagedOpenShift-User-<ocm_user_name>-Role' from account '<ocm_user_account_id>'
    3. Delete the user IAM role:

      $ rosa delete user-role --role-arn <arn>
      Example output
      I: Deleting user role
      ? User Role ARN: arn:aws:iam::<aws_account_id>:role/ManagedOpenShift-User-<ocm_user_name>-Role
      ? Delete the 'arn:aws:iam::<aws_account_id>:role/ManagedOpenShift-User-<ocm_user_name>-Role' role from the AWS account? Yes
      ? User role deletion mode: auto (1)
      I: Successfully deleted the user role
      1 Specifies the deletion mode. You can use auto mode to automatically delete the user IAM role. In manual mode, the rosa CLI generates the aws command needed to delete the role. manual mode enables you to review the details before running the aws command manually.

Additional resources