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Old 09-17-2009, 05:34 PM
sems sems is offline
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Quote:
Originally Posted by lassaad View Post
Hi all,

I just installed a cluster with ZCS / heartbeat / DRBD,

my problem is the failover:

1 - if I stop heartbeat on the primary node, takeover ok

2 - if I do "/etc/init.d/zimbra stop" : no effect: there is no takeover

any ideas ?

thank's in advance.
Heartbeat does in R1 mode does not check the status of each resource, whether they are up or down. So, you'll need to implement something, like MON package to monitor zimbra status and if needed stop heartbeat accordingly.

Hizar,

In your setup, I haven't seen anything related to split-brain on DRBD. That has been my major issue (I have been running an active/passive cluster since March, but it always comes back as a problem). How do you deal with it on yours? I have been searching on the net for possible ways to prevent split-brain to happen in the first place. I found some articles suggesting to increase heartbeat's drbddisk script's retry from 6 to 20 and increasing timeout values (see Otherworldly Gate: STONITH with DRBD and Heartbeat), I haven't tried it yet but I am open to suggestions.
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