Hi Sam, In a general manner, never ever use in production a tar.gz from the dev branch. As Lukas stated, prefer using a snapshot. They are more stable ;)
Baptiste On Mon, Nov 11, 2013 at 8:56 PM, Sam <[email protected]> wrote: > Thank you for the response, Lukas. > > >> > We are running dual HAProxy machines as our load balancers for our >> > web application, with keepalived for failover. This is the 2nd time >> > that both HAProxy instances have died in production with no indication >> > as to why. >> >> When this happens, do you always see both HAProxy instances crashing at >> the >> same time? > > > Yes, both instances at the same time. > >> >> > The load on the servers at the time was extremely low. We routinely do >> > MUCH MUCH more traffic than we had at the time of the last crash. Our >> > environment will stay up for months at a time without a hickup, and then >> > boom. >> >> Do you have outages on the backends or the network in between the proxy >> and >> the backend when this happens? > > > No, the load balancers are on the same Gigabit LAN network as the backends. > It also happens to be on the same LAN as our db servers, and we had no db > connection error messages. The backends never went down. > >> >> I'm asking because you also posted: >> > HAProxy error log before crash: >> > Nov 10 19:02:32 localhost haproxy[10926]: backend chat-cluster-01 has >> > no server available! >> >> >> .. which is actually a major crash bug in the HAProxy releases you are >> using: >> >> >> http://haproxy.1wt.eu/git?p=haproxy.git;a=commit;h=0fc36e3ae99ccbe6de88cf64093f3045e526d088 >> >> >> There is another major bug fixed in commit 506d050600, but I don't think >> you >> are running into it. >> >> >> Both bugs are fixed in HAProxy snapshot 20130707 >> (haproxy-ss-20130707.tar.gz) >> and later: >> >> http://haproxy.1wt.eu/download/1.5/src/snapshot/ >> >> >> I would suggest: >> - clarify if there is a connection between backend server failures and >> HAProxy crashes >> - either backport the bugfix or upgrade to one of the snapshots containing >> the bugfix >> >> Note that -dev17 has 2 security problems (one fixed in dev18, another one >> fixed in dev19, see http://haproxy.1wt.eu/news.html), so I would suggest >> you upgrade both HAProxy instances. >> >> >> If my guess here is wrong and HAProxy is still crashing, you need to >> enabled coredumping: >> >> http://www.mail-archive.com/[email protected]/msg09472.html > > > > Thank you so much, this is a big help. I will upgrade both HAProxy > instances to the latest snapshot release and report back if they crash > again. > > Regards, > Sam >
