Hi guys I would like to accomplish to following with HAProxy : if a server show a load average too high, indicate this server as down and remove it from live traffic. When load avg get to a better state, put server back online.
Looking into documentation I think the following could work, I would like to have your opinion. 1. create a PHP script that will check actual server status (we need to ensure load average is not too high, maybe other checks would be acheive also). According to the value we consider "bad", change current HTTP status to something like 5xx. 2. Configure HAProxy to check on that page like this : option httpchk HEAD /check-status.php HTTP/1.0 Does that make sense ? Is there other method of checking health of server according to its current load average ? We are running high traffic sites, we are also wondering if this would be more efficient to use http-check disable-on-404 or http-check expect instead. We think of not using an y regex pattern would be better for our situation. Thanks and have a nice day -- Maxime Ducharme Systems Architect
