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