Hi, I'm using HAProxy on Debian Wheezy to balance a web app and I'm currently having huge problems with HAProxy and it's balancing on our backend servers. I have a backend with 4 servers. When a traffic spike hits the frontend for those servers, they get close to their configured max connections.
After that the oddest thing happens: Some of the backends servers current connections just "freeze". The connection count is not updated anymore, thus those servers don't get any new connections when using least con balancing as they are stuck with on that high count. After restarting HAProxy everything works just fine again. Has anybody experienced problems like this or any ideas why this could happen? Regards, Maik

