I am using pacemaker myself, so I cannot guarantee whether my answers
are 100% correct for heartbeat by itself.
On Sun, 2009-10-04 at 05:16 +0800, Alex Dean wrote:
> 1. Under what conditions is the stonith device invoked? I think a
> node will be stonith'ed (if that's a word) if a resource's stop action
> exits abnormally, but are there other situations which will trigger a
> stonith action? I want to design a test plan that verifies the
> stonith configuration is performing as expected.
I believe the other node is also rebooted if it is completely
unreachable by network and serial connection. This may lead to a
"whoever shoots first wins" situation.
> 2. Who 'does' the stonith-ing? Is it always node A triggering stonith
> on node B, and vice versa, or are there some situations where a node
> will commit 'suicide' and stonith itself? I've wondered if SMITH
> (shoot myself in the head) ever occurs.
I don't think it ever commits suicide, but I'm not sure.
> 5. ilo2 is integrated with its host machine, but has a separate
> ethernet port. In the case of a network failure, where my nodes are
> only able to communicate over a serial connection, will one still be
> able to stonith the other? (Can the ilo attached to node A be
> triggered without an active ethernet connection?)
I seriously doubt it.
J.
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