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Chapter 6. Uninstalling a cluster on Azure

You can remove a cluster that you deployed to Microsoft Azure.

6.1. Removing a cluster that uses installer-provisioned infrastructure

You can remove a cluster that uses installer-provisioned infrastructure from your cloud.

Note

After uninstallation, check your cloud provider for any resources not removed properly, especially with User Provisioned Infrastructure (UPI) clusters. There might be resources that the installer did not create or that the installer is unable to access.

Prerequisites

  • You have a copy of the installation program that you used to deploy the cluster.
  • You have the files that the installation program generated when you created your cluster.

Procedure

  1. From the directory that contains the installation program on the computer that you used to install the cluster, run the following command: 

    $ ./openshift-install destroy cluster \
--dir <installation_directory> --log-level info 1 2
    1
    For <installation_directory>, specify the path to the directory that you stored the installation files in.
    2
    To view different details, specify warn, debug, or error instead of info.
    Note

    You must specify the directory that contains the cluster definition files for your cluster. The installation program requires the metadata.json file in this directory to delete the cluster.

  2. Optional: Delete the <installation_directory> directory and the OpenShift Container Platform installation program.

6.2. Deleting Microsoft Azure resources with the Cloud Credential Operator utility

After uninstalling an OpenShift Container Platform cluster that uses short-term credentials managed outside the cluster, you can use the CCO utility (ccoctl) to remove the Microsoft Azure (Azure) resources that ccoctl created during installation.

Prerequisites

  • Extract and prepare the ccoctl binary.
  • Uninstall an OpenShift Container Platform cluster on Azure that uses short-term credentials.

Procedure

  • Delete the Azure resources that ccoctl created by running the following command: 

    $ ccoctl azure delete \
  --name=<name> \1
  --region=<azure_region> \2
  --subscription-id=<azure_subscription_id> \3
  --delete-oidc-resource-group
    1
    <name> matches the name that was originally used to create and tag the cloud resources.
    2
    <azure_region> is the Azure region in which to delete cloud resources.
    3
    <azure_subscription_id> is the Azure subscription ID for which to delete cloud resources.

Verification

  • To verify that the resources are deleted, query Azure. For more information, refer to Azure documentation.
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