Chapter 11. Uninstalling a cluster on IBM Cloud

Procedure

1. If the following conditions are met, this step is required:

   • The installer created a resource group as part of the installation process.

   • You or one of your applications created persistent volume claims (PVCs) after the cluster was deployed.

     In which case, the PVCs are not removed when uninstalling the cluster, which might prevent the resource group from being successfully removed. To prevent a failure:

     1. Log in to the IBM Cloud® using the CLI.

     2. To list the PVCs, run the following command:

        $ ibmcloud is volumes --resource-group-name <infrastructure_id>

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        For more information about listing volumes, see the IBM Cloud® CLI documentation.

     3. To delete the PVCs, run the following command:

        $ ibmcloud is volume-delete --force <volume_id>

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        For more information about deleting volumes, see the IBM Cloud® CLI documentation.

2. Export the API key that was created as part of the installation process.

   $ export IC_API_KEY=<api_key>

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   Note

   You must set the variable name exactly as specified. The installation program expects the variable name to be present to remove the service IDs that were created when the cluster was installed.

3. From the directory that has 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

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   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 includes the cluster definition files for your cluster. The installation program requires the metadata.json file in this directory to delete the cluster.

4. Remove the manual CCO credentials that were created for the cluster:

   $ ccoctl ibmcloud delete-service-id \
       --credentials-requests-dir <path_to_credential_requests_directory> \
       --name <cluster_name>

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   Note

   If your cluster uses Technology Preview features that are enabled by the TechPreviewNoUpgrade feature set, you must include the --enable-tech-preview parameter.

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