Hi everyone I am having a little problem with setting up HAProxy loadbalancing in front of several Glassfish servers. All of them apart from a single one are reporting as DOWN according to the chkhttp health check. This was puzzling as they respond perfectly well to a manual request with a 200 OK response.
We are using HAProxy 1.3.22 and Sun GlassFish Enterprise Server v2.1 (9.1.1) (build b60e-fcs) I installed HAProxy 1.4-dev6 in order to get more info from the health check failures which gave the info... [WARNING] 014/171730 (22990) : Server argggggggh/server18080 is DOWN, reason: Layer7 invalid response, info: "HTTP/1.1 ", check duration: 0ms. This led me to run tcpdump to see what was going on. I tried against our various different servers and all of these that work return HTTP/1.1 200 OK within the first packet. With the glassfish servers that respond as down it returns the status in 3 separate packets - HTTP/1.1 , 200 and OK and it seems that HAProxy is only using the first one. So presumably this is a bug in HAProxy that isn't normally triggered? I can't find any information about why Glassfish is breaking up the response. Has anyone come across this before? Can you suggest a workaround or fix to the bahavior in either Glassfish or HAProxy? Thanks Ben
