Josh's Blog

4.27.2005

Let's see.. what have I been up to?
Work has been hellish.. way too many problems with servers, then finally those get sorted out, and I have problems with the site in the new config. FINALLY got that sorted out (I think!, cross your fingers).. so I can take a breath.
I've got too much other stuff piling up.. need to get that taken care of. Then maybe I can relax for once and take a day to just veg or something.. I'm looking forward to it :)

I'm pretty excited about this new config for t-nation though. We're using ultramonkey (which is a package based around the LVS project). It's running on 10 of the super awesome rackable systems C1000 servers. Each of those is configured with 2 AMD Opteron 250s (64bit monsters!), 4Gb RAM, one 250Gb SATA drive, and dual gigabit ethernet. These are all plugged into two gigabit switches (from d-link). I've isolated cluster and LVS routing traffic to the internal network (eth1), leaving the external net for communicating back to the main apache server on titan. These are serving all of our (on average) 10-20k active sessions without breaking a sweat! load is rarely over .1! I did have to rewrite major portions of the code to handle such a large cluster efficiently, but the rewrite seems to be holding up well so far.
In the future I might move apache onto each cluster box too, depending on how much of a bottleneck it proves to be on titan. As for titan, now that he's not running java, he seems to be very happy. He's found his true calling as a mysql server.

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