Hey, This is a quick post for those who might need to perform HTTP health checks against a running HAProxy instance. From my perspective, three ways of doing it: using the monitor-uri directive (you should use this one); using a custom HTTP file with errorfile directive; using a lua script. While the first and seconds should work in any HAProxy installation, the third requires lua, which your HAProxy binary might have support or not. ps.: In the past, I wrote about how to install haproxy with...
