1. Back up Current Data

  1. Stop the original Ambari Server.

    ambari-server stop
  2. Create a directory to hold the database backups.

    cd /tmp
    mkdir dbdumps
    cd dbdumps/
  3. Create the database backups.

    pg_dump -U $AMBARI-SERVER USERNAME ambari > ambari.sql Password: $AMBARI-SERVER PASSWORD
    pg_dump -U $MAPRED USERNAME ambarirca > ambarirca.sql Password: $MAPRED PASSWORD

    Where usernames and passwords reflect your particular installation. Defaults are ambari-server/bigdata and mapred/mapred.

loading table of contents...