|Appendixes / Using the Vocera Control Panel|
Learn the commands that you can use to control your cluster and a description of each.
On a Vocera Voice Server that is part of a cluster, the Vocera Control Panel has a Cluster menu that lets you control the cluster. For example, you may want to force a failover when you add a new machine to a cluster, or you may want to start one of the machines as a standalone Vocera Voice Server.
The Cluster menu provides the following commands:
Temporarily removes a Vocera Voice Server from a cluster and restarts it as a standalone system. This command does not break up a cluster or cause a failover to occur; instead, it allows you to disconnect a server from a cluster temporarily for maintenance.
The exact behavior of this command depends upon the state of the server at the time that you stopped it:
The Start Standalone command is available only when the Vocera Voice Server is stopped. See Stopping and Restarting the Server for more information about stopping the server.
The Cluster Setup page on the System screen in the Administration Console does not get updated when you execute the Start Standalone command. That is, the Enable Cluster checkbox remains selected, all the servers remain in the list, and the status of the servers in the list does not change.
When you restart a standalone server, it goes into discovery mode and comes online as a cluster node in the same state—active or standby—it was in prior to becoming a standalone server.
You can restart a standalone server with either the Failover command in its Vocera Control Panel or the Force Restart button on the Cluster Setup page of its Administration Console.
Does one of the following, depending on the status of the Vocera Voice Server:
If failover occurs in a clustered environment, the control panel opens to the active server instance.