From: ara.t.howard@... Date: 2006-10-12T23:40:09+09:00 Subject: Re: rubyforge.org down On Thu, 12 Oct 2006, Rob Sanheim wrote: > On 10/11/06, Tom Copeland wrote: >> On Wed, 2006-10-11 at 13:41 +0900, Charles Oliver Nutter wrote: >> > Tom Copeland wrote: >> > > Oh, the current machine can handle the load just fine; I'm just >> > > wondering if flaky RAM may be causing the problems. >> > >> > So now let me get this straight...you're not interested in potential new >> > hardware? I'll take it if you don't want it! :) >> >> Ah, this machine's a good 'un... just needs an oil change. Or maybe the >> tires rotated... >> >> Yours, >> >> Tom > > Why not setup a clustered setup for some redundancy? I mean, if a > certain well known corporation was willing to donate resources to open > source projects... my experience is that each percentage point of uptime increase adds exponential effort for the maintainers. clustered setups are insanely complicated with any application that has state - which rubyforge does. people think it's straightforward, but i can't tell you how many boxes we've seen that were 'highly-available' which ignored situations like split-brain, failback, etc. and therefore merely threw money and time at a problem without increasing reliability... lazy replication and all the quick fixes cause more problems than they solve - to do it right one needs good shared storage with serious hardware redundancy and remote controlable stonith devices for prevent split brain. a modest setup would start at 50k depending on storage needs. some of our systems are more like 300k - and that's for one pair. anyhow, i think a more reasonable approach is a) minimize downtime. rubyforge is already there, i'm sure it's uptime is above 98% b) run hot-warm with manual failover and failback. this is cheap and a helps 'a' greatly. c) drb (distributed block device) could drastically reduce cost and eliminate the need for shared storage - but i have no experience with it... sorry for OT rant... ciao. -a -- my religion is very simple. my religion is kindness. -- the dalai lama