[Pacemaker] Starting openais one legged, STONITH activates

David Morton davidmorton78 at gmail.com
Sun Feb 27 19:58:51 EST 2011


I'm pretty sure the behavior outlined below is by design (and it does make
sense logically) but I am wondering if there are additional checks that can
be put in place to change the behavior.

Situation:
- Two node cluster with IPMI STONITH configured
- Both servers running but with openais / pacemaker shutdown
- Start openais on one server only
- Server that starts executes a STONITH reset of the other node

I imagine this is due to an indeterminate state / no comms between nodes,
the only way to move to a known state is then to bounce the other node. Is
this correct ?

Is there any way to configure alternate means of confirming the openais /
pacemaker service is not started and avoid a hard reset on the 'other' node
? ie: log in via ssh and enquire on service state, maybe even check key
resources etc ?

Is the preferred method to always run openais / pacemaker on all nodes and
manipulate rules to determine where resources run ? typically i would just
shutdown openais to force all resources to one node or the other to simplify
config creation and testing etc.
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