Restoring After a Failover

To restore the fully functional condition, simply start the appliance that is down.

If the EMS servers do not start automatically, you can start them manually using the start command.

The EMS server instances on the restarted appliance automatically contact their peers in the functional appliance. The servers in the functional appliance, which have been operating in active-standalone state, enter the active-synchronizing state while continuing to service messaging clients.

When synchronization is complete, both EMS server instances on the functional appliance transition to the active-replicating state. Both servers on the newly started appliance then transition to the standby-replicating state. Use the restore-primary-active command on the CLI to rebalance the server instances so that EMS server instance 0 is active on the primary appliance and EMS server instance 1 is active on the secondary appliance.

Warning: Restoring the primary EMS server to the active state causes client connections to drop and reconnect, as the active server moves from one appliance to the other.