Letsgetdugg

Update: I feel like a jackass now, I thought I was running this against the stable haproxy build, but in reality this was against haproxy-1.4dev6. DOH! Well on the bright-side, I am helping out the author fix a potentially critical bug. Here is the truss and tcp dump if anyone cares. Well yet another Solaris […]

Clearing stale cache by domain You can clear a site’s cache by domain, this is really nifty if you have Varnish in front of multiple sites. You can log into Varnish’s administration console via telnet and execute the following purge command to wipe out the undesired cache. purge req.http.host ~ letsgetdugg.com Monitor Response codes Worried […]

Update 2010-02-19: Seems other people are also affected by the Varnish LINGER crash on OpenSolaris. This does not address the core problem but removes the “fail fast” behavior with no negative side effects. r4576 has been running reliably with the fix below. In varnishd/bin/cache_acceptor.c if (need_linger) setsockopt(sp->fd, SOL_SOCKET, SO_LINGER, &linger, sizeof linger); Remove TCP_assert line […]

Squid is a fundamental part of our infrastructure at Fabulously40. It helps us lower response times quite considerably. The problem with Squid is that it is quite “dense” when it comes to configuration flexibility. Unless your willing to do a bit of C hacking on it, it does not have much configuration flexibility. This can […]

*Update* Patches got accepted into MogileFS Trunk 😉 Just go check out trunk, it has all my patches already included. http://code.sixapart.com/svn/mogilefs/trunk/ The only thing you need is my mogstored disk patch which is still pending. All the issues revolving around postgresql and solaris have been already included in trunk. I fixed a few issues with […]

I just received my “Guide to Open-Source Operating Systems” comparing Solaris with Linux from Sun’s marketing department. Here are some of the facts that made me cringe due to blatant lying and half truths. Hey Sun, don’t let the facts get in your way. Believe it or not but this is actually verbatim from the […]

Once again I have been blind sided by yet another conservative out-of-the-box setting. IPFilter is tuned way too conservative with it’s state table size. Here is how you can tell if your hitting any issues, run ipfstat and check for lost packets. victori@opensolaris:~# ipfstat | grep lost fragment state(in): kept 0 lost 0 not fragmented […]

Update: The following information could be beneficial to some, however my issues actually were with Caviar black drives shipping with TLER disabled. You need to pay Western Digital a premium for their “RAID” drives with TLER enabled. So for anyone reading this, avoid consumer Western Digital drives if you plan on using them for RAID. […]

Recently a primary boot disk went bad on our server and I got blind sided by a non-bootable secondary mirror disk. All the data was intact but I could not boot it. This required a slow re-installation and migration process that took a very long time. • EFI partitioned drives are not ZFS bootable. • […]

I have finally nailed out all our issues surrounding Varnish on Solaris, thanks to the help of sky from #varnish. Apparently Varnish uses a wrapper around connect() to drop stale connections to avoid thread pileups if the back-end ever dies. Setting connect_timeout to 0 will force Varnish to use connect() directly. This should eliminate all […]