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Chapter 15. Uninstalling a cluster on Google Cloud
You can remove a cluster that you deployed to Google Cloud.
15.1. Removing a cluster that uses installer-provisioned infrastructure Copia collegamentoCollegamento copiato negli appunti!
You can remove a cluster that uses installer-provisioned infrastructure from your cloud.
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. For example, some Google Cloud resources require IAM permissions in shared VPC host projects, or there might be unused health checks that must be deleted.
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
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
$ ./openshift-install destroy cluster \ --dir <installation_directory> --log-level info1 2 Copy to Clipboard Copied! Toggle word wrap Toggle overflow NoteYou must specify the directory that contains the cluster definition files for your cluster. The installation program requires the
metadata.jsonfile in this directory to delete the cluster.-
Optional: Delete the
<installation_directory>directory and the OpenShift Container Platform installation program.
15.2. Deleting Google Cloud resources with the Cloud Credential Operator utility Copia collegamentoCollegamento copiato negli appunti!
To clean up resources after uninstalling an OpenShift Container Platform cluster with the Cloud Credential Operator (CCO) in manual mode with Google Cloud Workload Identity, you can use the CCO utility (ccoctl) to remove the Google Cloud resources that ccoctl created during installation.
Prerequisites
-
Extract and prepare the
ccoctlbinary. - Install an OpenShift Container Platform cluster with the CCO in manual mode with Google Cloud Workload Identity.
Procedure
Obtain the OpenShift Container Platform release image by running the following command:
RELEASE_IMAGE=$(./openshift-install version | awk '/release image/ {print $3}')$ RELEASE_IMAGE=$(./openshift-install version | awk '/release image/ {print $3}')Copy to Clipboard Copied! Toggle word wrap Toggle overflow Extract the list of
CredentialsRequestcustom resources (CRs) from the OpenShift Container Platform release image by running the following command:oc adm release extract --credentials-requests \ --cloud=gcp \ --to=<path_to_directory_with_list_of_credentials_requests>/credrequests \ $RELEASE_IMAGE
$ oc adm release extract --credentials-requests \ --cloud=gcp \ --to=<path_to_directory_with_list_of_credentials_requests>/credrequests \1 $RELEASE_IMAGECopy to Clipboard Copied! Toggle word wrap Toggle overflow - 1
credrequestsis the directory where the list ofCredentialsRequestobjects is stored. This command creates the directory if it does not exist.
Delete the Google Cloud resources that
ccoctlcreated:ccoctl gcp delete \ --name=<name> \ --project=<gcp_project_id> \ --credentials-requests-dir=<path_to_directory_with_list_of_credentials_requests>/credrequests
$ ccoctl gcp delete \ --name=<name> \1 --project=<gcp_project_id> \2 --credentials-requests-dir=<path_to_directory_with_list_of_credentials_requests>/credrequestsCopy to Clipboard Copied! Toggle word wrap Toggle overflow
Verification
- To verify that the resources are deleted, query Google Cloud. For more information, refer to Google Cloud documentation.