[Pacemaker] cluster failover under load

Dejan Muhamedagic dejanmm at fastmail.fm
Fri Feb 17 06:22:28 EST 2012


On Fri, Feb 17, 2012 at 10:37:39AM +0100, fatcharly at gmx.de wrote:
> Hi,
> we are using a pacemaker 1.0.5-4.7 with heartbeat 3.0.0-33.10
> and a drbd device on a CentOS 5.7 webserver-cluster. When the
> active node gets under heavy load, the cluster sometimes starts
> to failover.

What does failover? Resources? All resources? Is the node
considered down/lost?

> Is there a way to make this behavior less
> sensitive like changing the retry/recheck time/counter ?

Indeed there is, but depends on what's happening. If it's on a
heartbeat level, then you need to tweak ha.cf. If on a resource
level, then I guess monitor timeouts.



> Any Suggestions are welcome
> kind regards
> fatcharly
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