This post will describe how you can check that a Runbook server failes over to a second Runbook server when the first server goes down.
Start by creating a simple Runbook. This is how mine looks like.
Sleep 30 sec
Append Line C:\tmp\FailOverRunbook.txt
Start the Runbook and monitor that it creates a file on the primary Runbook server. Next start the Runbook again and stop the Runbook service on the primary Runbook server while the Runbook is running.
This should make the Runbook to fail over to the second Runbook server. After the Runbook is done check that a file has been created on the second Runbook server.
Don’t forget to start the Runbook service on the primary Runbook server when you are done.