[TriLUG] seeking peered cluster file system advice

Mark Kempster mark at kempster.org
Thu Nov 16 12:41:44 EST 2006


I'm trying to cobble together a loadbalanced cluster of ubuntu boxen
(serving http [webdav, subversion, wiki, etc.], mail, and whatever
else I can throw at it) with 3 machines - one ex-doorstop to serve
as director, and two real-servers.

I'd like the real-servers to share the data portions of their
filesystems with each other, and not with nfs (gfs, etc.) living on
another machine.

It seems that in a high-availability-through-failover setup, drbd
is the way to go. What are the options where both nodes are active,
and the content should be synchronized? Peered read/write drbd would
fit the bill (ala drbd-openssi), but stock drbd doesn't seem to work
that way. Coda seems to be an alternative, but with all the articles
pointing at unison and lustre, is coda already a thing of the past?

Is it a mistake to go with coda?
Any experience with openSSI, drbd-openssi?
Are there any implementations to say away from?

Thanks in advance.
Cheers
- Mark




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