On the Ambari Server host, stop the original Ambari Server.

ambari-server stop

Create a directory to hold the database backups.

cd /tmp

mkdir dbdumps/

cd dbdumps/

Create the database backups.

pg_dump -U {ambari.db.username} -f ambari.sql

Password: {ambari.db.password}

where the following:

Create a backup of the Ambari Server meta info.

ambari-server backup