Miles Fidelman wrote:
> Igor Chudov wrote:
>> I would like to know if there are relatively straightforward Linux
>> based alternatives to DRBD and heartbeat.

In theory you could try setting up raid-1 with mdadm where one of the 
devices is an iscsi target. That's for drbd -- and you could probably 
even see the filesystem read-only on the secondary node. No idea if 
it'll work, though.

The failover is trickier: dep. on what corner cases you want to handle, 
you could soon find yourself re-implementing heartbeat + pacemaker + 
OpenCoronaryAches in all their glory. In the simplest case of "ping 
cluster ip, if you get no response, bring up eth0:0 and fire up 
services" -- a 20-line script?

Dimitri
-- 
Dimitri Maziuk
Programmer/sysadmin
BioMagResBank, UW-Madison -- http://www.bmrb.wisc.edu
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