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In the Presentation Server HA mode, the secondary server becomes the active server if the primary server stops operating, due to an event that triggers a server shutdown. Once the primary server is up and running, it does not become the active server by default. The primary server is still in a standby mode. The service can be transferred back to the primary server, or the primary server can remain in standby mode.

During a failover, if you are accessing the TrueSight console using a load balancer, you might view error messages such as The Server is unable to respond. Any operation using the TrueSight console might fail. This is a temporary condition and normalcy is restored when the active node becomes fully operational.

Note

Do not stop the active server immediately after restarting the standby server. The cache synchronization takes time to complete and is dependent on your environment.

 

To transfer service to the standby server

  1. Ensure that the standby server is up and running.

    Note

    Do not stop the active server immediately after restarting the standby server. The cache synchronization takes time to complete and is dependent on your environment.

  2. On the active server, open a CLI command prompt, and from the <Presentation Server installation directory>\truesightpserver\bin directory, run the following command:
    tssh server stop 
    The active server is stopped and the standby server now becomes the active server.
  3. Restart the stopped server. Open a CLI command prompt, and from the <Presentation Server installation directory>\truesightpserver\bin directory, run the following command:
    tssh server start
    The server is now the standby server.