We recently switched our web cluster to use HaProxy 1.5.x from a combination
of pound and xrctl. So far, we're loving it!
Some questions have come up, though, that we'd like to entertain:
1) Logging performance data:
A) How long before the page started putting out data? (implying that
the
server side is done processing, though not necessarily)
B) How long did the whole cycle take from initial connection to end of
download?
2) Is there a way to anti-DDOS based on a cookie? (Really, we want to filter
based on user/login but that isn't actually part of the HTTP session, that's
determined by the cookie) W
3) Is there a repo for 1.5.x for RHEL 6 / CentOS 6 ? (I couldn't find one)
4) As loads and uptimes vary on our logic servers, we have a script that sets
the weight for each of our 5 logic servers every 5 seconds, to a weight of 0
if a fault is detected. Is there a way to have haproxy set the weight to 0 if
the script doesn't report in to the load balancer after a timeout? EG: 60
seconds.
5) Is there a relatively simple way to get "true HA" with a redundant load
balancer? We have two identical machines side-by-side running EL6 and haproxy,
one is a disk dd of the other. In the past we used heartbeat with limited
success; pacemaker has been very problematic for us. For now, we're managing
manually.
Ben Smith
