Does anyone here on this list have experience with HA clustering? I'm previewing drbd as a potential tool, and wanted to know if anyone here has experiemented with it at all... How stable is it? Does the additional likelyhood of failure given the additional complexity actually get compensated by a better overall system? http://www.drbd.org/ Any feedback is welcome... -Ben -- "The best way to predict the future is to invent it." - XEROX PARC slogan, circa 1978 -- This message has been scanned for viruses and dangerous content by MailScanner, and is believed to be clean.
On 10/03/06, Benjamin Smith <lists at benjamindsmith.com> wrote:> Does anyone here on this list have experience with HA clustering? > > I'm previewing drbd as a potential tool, and wanted to know if anyone here has > experiemented with it at all... How stable is it? Does the additional > likelyhood of failure given the additional complexity actually get > compensated by a better overall system? > > http://www.drbd.org/I've used DRBD and Heartbeat in various guises for various roles over the last 5 or 6 years. Initially I was loathe to put it in production, it just didn't seem polished enough. Nowadays it's pretty decent though we don't use it for vast quantities of data. We have some old-ish boxes running as LVS loadbalancers for a handful of mail and webservers and these are pretty solid. We run DRBD/Heartbeat clusters for a Qmail/VPOPMail NFS mailstore which holds around 40GB of customer Maildirs. That's running the packaged DRBD and Heartbeat RPMs from CentOS Extras and has been solid since we switched back to NFS3 from NFS4. We run a similar setup with small MySQL and Postgres databases and that's pretty reliable too. Will.