Performing Failover of a Storage Node Server

This procedure is relevant only to CTERA Portal servers acting as replicated CTERA CloudFS storage nodes.

To perform failover of a storage node server to a storage node warm standby:

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

   ctera-portal-manage.sh stop

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

   ctera-failover.sh failover

3. If the failed storage node server (server1) is repaired and you want it to become a warm standby of the new storage node server (server2) (switch their roles), run the following command on the repaired old storage node server (server1):

   ctera-failover.sh become_replica

4. Restart all the servers, by running the following command on each server:

   ctera-portal-manage.sh start

5. Update the storage node IP address in the CTERA Portal web interface. For a CTERA Cloud FS storage node:
   1. In the navigation pane of the Global Administration View, click Main > Storage Nodes.
   2. The Storage Nodes page appears.
   3. Select the storage node and click Edit. The Storage Node Wizard appears.
   4. Click Next.

      

   5. In the Host Address field, change the IP address to the IP address of the new storage node server (server2).
   6. Complete the wizard.