Perform a Rolling Restart

You can follow this sequence to perform a rolling restart of the existing masters and add the new master configuration.

Restart the Masters

Step 1: Update the Master Addresses Configuration

Ambari automatically updates the master_addresses configuration parameter to include all existing and new masters.

Step 2: Restart the Existing Masters

Restart the existing masters one at a time in Ambari. This step ensures that the new master configuration is applied without causing cluster unavailability.

Step 3: Start the New Master

After the existing masters are restarted with the updated configuration, start the new Kudu master (for example, kudu3.acceldata.dvl) in Ambari. This action triggers tablet copy and master synchronization.

Validate the Configuration

Run the following command to confirm that all masters are properly configured and participating in the cluster:

kudu master list kudu1.acceldata.dvl,kudu2.acceldata.dvl,kudu3.acceldata.dvl