This is supposed to accept connections from a Load Balancer fail over, and trigger a script based on getting a connection.

So if your LB is sends traffic from http://test.local to serverA and serverA goes down, and this is listed as the failover, When it receives a connection trying to reach http://test.local, it will run the script in the path /test.local/run.sh This run.sh script should contain the commands needed to restart the webserver on serverA, to get it back up.