Ambari Properties backup

You must make a safe copy of the Ambari Server configuration file found at /etc/ambari-server/conf/

During the Ambari upgrade, the existing /var/lib/ambari-server/ file is overwritten and a backup copy of (with extension .rpmsave) is created. If you have manually modified (for example, to change Ambari Server heap), you must reapply your changes in the new file.

To purge your Ambari cluster, see Purging Ambari Server Database History.