Hi, In syslog I see all kinds of things, for example when a server has gone down for maintenance or when I send a SIGHUP to the haproxy process. So why is a failure not being logged? It would really help to at least know when the chkfail has occurred so we can try to relate the issue with messages from the webserver logs or our monitoring-system.
Michel -----Oorspronkelijk bericht----- Van: Michel Hoogervorst Verzonden: woensdag 11 juni 2014 14:21 Aan: '[email protected]' Onderwerp: RE: [chkfail] what went wrong? Hi, I have done some more searching, but cannot lay my finger on what the chkfail's are about. Since the are counted I'd say they must mean "something". I'd really like to know what the chkfail's are about. Is there some special loglevel I could setup to gain more information on these failures? Michel -----Oorspronkelijk bericht----- Van: Michel Hoogervorst Verzonden: dinsdag 3 juni 2014 12:02 Aan: 'Baptiste' CC: [email protected] Onderwerp: RE: [chkfail] what went wrong? Hi, Thanks for your reply. This is how our config looks like (I stripped some non-relevant comments and names): global log 127.0.0.1 local2 chroot /var/lib/haproxy pidfile /var/run/haproxy.pid maxconn 20000 user haproxy group haproxy daemon tune.maxrewrite 2048 stats socket /var/lib/haproxy/stats defaults mode http log global option httplog option dontlognull option dontlog-normal option forwardfor except 127.0.0.0/8 option redispatch retries 3 timeout http-request 10s timeout queue 1m timeout connect 10s timeout client 30m timeout server 30m timeout http-keep-alive 10s timeout check 10s maxconn 20000 listen webcluster_prod 127.0.0.1:8081 mode http balance hdr(X-Forwarded-For) option contstats option httpchk HEAD /check.txt HTTP/1.0 option httpclose server xxx 10.20.30.1:80 check server yyy 10.20.30.2:80 check When a server goes down I do get a message in the log, so loggins seems to work fine. I just would like to know what the chkfail is about since I only see it in the stats and nowhere else. Kind regards, Michel Hoogervorst -----Oorspronkelijk bericht----- Van: Baptiste [mailto:[email protected]] Verzonden: dinsdag 3 juni 2014 11:41 Aan: Michel Hoogervorst CC: [email protected] Onderwerp: Re: [chkfail] what went wrong? On Tue, Jun 3, 2014 at 11:28 AM, Michel Hoogervorst <[email protected]> wrote: > Hi, > > > > I have checked the documentation but cannot find much information on > chkfail’s in there. > > > > Is there any way to check what went wrong when a “chkfail” has occurred? > > We use a monitoring-plugin that has thresholds set on chkfail’s which > shows me that some machines have multiple chkfail’s every day. > However, no problem is logged both on the HAProxy side and on the > webserver side, and “show errors” on the stats-socket shows 0 errors. > > I’d like to know what happened, and if there has been any impact from > this failure. Is a chkfail always because the server didn’t respond > within 10 seconds or can it be something else? > > Met vriendelijke groet, kind regards, > > Michel Hoogervorst Hi Michel, Maybe you could start by sharing your configuration, then it will be easier to help you. HAProxy setup log severity to notice when a server fails move to status DOWN due to wrong health check response. If you don't retrieve this info in your log it's either because your HAProxy or your syslog server is not well configured (or both of them in the mean time). Baptiste
