Hi all. I'm having a problem with relayd under OpenBSD 4.5. I've got it configured to load balance web traffic (almost exactly the configuration in example 1 at https://calomel.org/relayd.html ). It was working great until I increased the load...then odd things started happening. relayd would exit (I have it running under daemontools,so it would start back up), with the following in the log:
--snip-- 2009-10-19 10:35:17.647251500 kill_tables: deleted 0 tables 2009-10-19 10:35:17.647410500 host check engine exiting 2009-10-19 10:35:17.650175500 relay iisproxy, session 281 (3 active), 0, 24.149.127.253 -> 192.168.9.3:80, shutdown 2009-10-19 10:35:17.650473500 flush_rulesets: flushed rules 2009-10-19 10:35:17.651681500 pf update engine exiting 2009-10-19 10:35:17.651728500 relay iisproxy, session 277 (2 active), 0, 24.149.127.253 -> 192.168.9.4:80, shutdown 2009-10-19 10:35:17.653318500 relay iisproxy, session 286 (1 active), 0, 199.191.107.2 -> 192.168.9.2:80, shutdown 2009-10-19 10:35:17.664604500 socket relay engine exiting 2009-10-19 10:35:17.664654500 socket relay engine exiting 2009-10-19 10:35:17.664698500 socket relay engine exiting 2009-10-19 10:35:17.664742500 socket relay engine exiting 2009-10-19 10:35:17.664786500 socket relay engine exiting 2009-10-19 10:35:17.664829500 socket relay engine exiting 2009-10-19 10:35:17.664873500 socket relay engine exiting 2009-10-19 10:35:17.664917500 socket relay engine exiting 2009-10-19 10:35:17.664961500 socket relay engine exiting 2009-10-19 10:35:17.665072500 socket relay engine exiting 2009-10-19 10:35:17.665118500 socket relay engine exiting 2009-10-19 10:35:17.665162500 socket relay engine exiting 2009-10-19 10:35:17.665206500 socket relay engine exiting 2009-10-19 10:35:17.665251500 socket relay engine exiting 2009-10-19 10:35:17.665297500 socket relay engine exiting 2009-10-19 10:35:17.665342500 socket relay engine exiting 2009-10-19 10:35:17.665387500 socket relay engine exiting 2009-10-19 10:35:17.665553500 socket relay engine exiting 2009-10-19 10:35:17.665599500 socket relay engine exiting 2009-10-19 10:35:17.665643500 socket relay engine exiting 2009-10-19 10:35:17.665695500 socket relay engine exiting 2009-10-19 10:35:17.665738500 socket relay engine exiting 2009-10-19 10:35:17.665781500 socket relay engine exiting 2009-10-19 10:35:17.665819500 socket relay engine exiting 2009-10-19 10:35:17.689529500 startup --/snip-- ...then it would start back up. To make things more interesting, the IP stack would appear to go insane. I was getting the following logged in relayd: --snip-- relay_connect: session 50064: forward failed: No route to host --/snip-- I could also no longer ping any local addresses, nor the local interface's IP address itself...both would fail with "no route to host". I figured it may have been a bad NIC, but I switched over carp to my standby box, and the same thing immediately happened there. I also applied some of the performance tweaks at https://calomel.org/network_performance.html, but that didn't help any. Nothing gets sent to dmesg or /var/log/messages when this happens. I figure I've got to be missing some sysctl or something to make some buffer bigger, but I can't figure out what. Anyone have any clues here? Thanks! --Brian -- _-=-_-=-_-=-_-=-_-=-_-=-_-=-_-=-_-=-_-=-_-=-_ Brian McCann "I don't have to take this abuse from you -- I've got hundreds of people waiting to abuse me." -- Bill Murray, "Ghostbusters"
