I've set up failover Apache2/MYSQL server with two RPIs with keepalived daemon.
I'd like to use checkers for so called realservers (so keepalived checks if specific server (i.e. Apache2, ...) is running, not just if machines are accesible over ethernet). I was unable to find any useful documentation about configuring keepalived to such extent. I am afraid that I simply lack knowledge to find info in keepalived sources, so I'd be grateful for pointers for docs I might have missed, or for help with that.