To uninstall the CLM software from a CLM cluster

Purpose

Perform this procedure to remove the CLM software from the nodes in a CLM cluster.

Note: You require root or CLM admin user privileges on each CLM cluster station.

Note: release-ID in a file path has the following format:

R.r.p-rel.version

where

R.r.p is the CLM release, in the form MAJOR.minor.patch

version is a numeric value

Steps
 
1 

Log in as the root or CLM admin user on the CLM deployer host.

2 

Open a console window.

3 

Enter the following:

# cd /opt/nsp/NSP-CN-DEP-release-ID/bin ↵

4 

Back up the Kubernetes secrets.

  1. Enter the following:

    # ./nspdeployerctl secret -o backup_file backup ↵

    where backup_file is the absolute path and name of the backup file to create

    As the secrets are backed up, messages like the following are displayed for each Kubernetes namespace:

    Backing up secrets to /opt/backupfile...

      Including secret namespace:ca-key-pair-external

      Including secret namespace:ca-key-pair-internal

      Including secret namespace:nsp-tls-store-pass

    When the backup is complete, the following prompt is displayed:

    Please provide an encryption password for backup_file

    enter aes-256-ctr encryption password:

  2. Enter a password.

    The following prompt is displayed:

    Verifying - enter aes-256-ctr encryption password:

  3. Re-enter the password.

    The backup file is encrypted using the password.

  4. Record the password for use when restoring the backup.

  5. Record the name of the data center associated with the backup.

  6. Transfer the backup file to a secure location in a separate facility for safekeeping.

5 

To preserve the cluster configuration, perform the following steps.

  1. Open the following file using a plain-text editor such as vi:

    /opt/nsp/NSP-CN-DEP-release-ID/NSP-CN-release-ID/config/nsp-config.yml

  2. Edit the following line in the platform section, kubernetes subsection to read:

      deleteOnUndeploy:false

  3. Save and close the file.

6 

Enter the following:

Note: If the CLM cluster VMs do not have the required SSH key, you must include the --ask-pass argument in the command, as shown in the following example, and are subsequently prompted for the root password of each cluster member:

nspdeployerctl --ask-pass --undeploy --clean

# ./nspdeployerctl uninstall --undeploy --clean ↵

The CLM software is removed from each CLM cluster member.

End of steps