Performing Failover of a Catalog Node

 To perform failover of a catalog node server to its warm standby:

1. Stop CTERA Portal on the failed catalog node server (which we will call server1), by running the following command:

   ctera-portal-manage.sh stop

2. On the catalog node warm standby (which we will call server2), run the following command:

   ctera-failover.sh failover

3. If the failed catalog node (server1) had additional warm standbys:
   1. Open portal.cfg on each warm standby, and find the following line:

      CTERA_REPLICATION_FROM= server 1 IP address

   2. Replace server1 IP address with the IP address of the new catalog node (server2).
4. If the failed catalog node (server1) is repaired and you want it to become a warm standby of the new catalog node server (server2) (thus switching their roles), run the following command on the repaired old catalog node server (server1):

   ctera-failover.sh become_replica

5. Restart all the servers, by running the following command:

   ctera-portal-manage.sh start