After you click Join Cluster in the management console on a secondary cluster node, the progress indicator disappears.
When you use the vRealize Automation appliance management console after upgrade to join a secondary cluster node to the primary node, the progress indicator disappears and no error or success message appears. This behavior is an intermittent problem.
The progress indicator disappears because some browsers stop waiting for a response from the server. This behavior does not stop the join cluster process. You can confirm that the join cluster process is successful by viewing the log file at /var/log/vmware/vcac/vcac-config.log.