[Pacemaker] node states

[Andrew Beekhof]

On Wed, Mar 17, 2010 at 7:53 PM, Matthew Palmer <mpalmer at hezmatt.org> wrote:
> On Wed, Mar 17, 2010 at 07:16:16AM -0500, Schaefer, Diane E wrote:
>>   We were wondering what the node state of UNCLEAN, with the three
>>   variations of online, offline and pending returned in crm_mon mean.  We
>>   had the heartbeat service off on one of our nodes and the other node
>>   reported UNCLEAN (online).  We seem to get it when the nodes are not
>>   communicating.  Thanks for any clarification.
>
> Unclean (online) means that the STONITH resource for that node had some
> failures, and so the cluster isn't confident that when it comes time to
> shoot that node (if required), it'll actually work.

You'll also see it when any resource fails to stop _and_ stonith isn't enabled.

>
> Unclean (offline) means that communication has been lost, but STONITH failed
> (or hasn't run yet -- should only be for a fraction of a second) and so the
> "deadness" of the presumed-dead node isn't assured.

Again, unless stonith is disabled.  But no-one would run such a cluster ;-)

>
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>
> ONOES!  A grue!
>
> - Matt
>
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