Cloudera Docs

Prepare for removal

In order to remove the unwanted masters from a multi-master deployment, you need to identify them and note their UUID and RPC addresses.

  1. Establish a maintenance window (one hour should be sufficient). During this time the Kudu cluster will be unavailable.
  2. Identify the UUID and RPC address current leader of the multi-master deployment by visiting the /masters page of any master’s web UI. This master must not be removed during this process; its removal may result in severe data loss.
  3. Stop all the Kudu processes in the entire cluster.
  4. If you are using Cloudera Manager, remove the unwanted Kudu master from your cluster's Kudu service.