[ClusterLabs] start one node only?

Ken Gaillot kgaillot at redhat.com
Thu Aug 24 16:40:20 EDT 2017

On Thu, 2017-08-24 at 15:10 -0500, Dimitri Maziuk wrote:
> Hi everyone,
> I seem to remember seeing theis once before, but my google-fu is
> failing: I've a 2-node active-passive cluster, when I power up one node
> only, resources remain stopped. Is there a way to boot a cluster on one
> node only?
> -- Note that if I boot up the other node everything starts, and then I
> can shut one of them down and it'll keep running. But that doesn't seem
> to happen when starting cold.
> What am I missing?

That's a fail-safe. You're probably using corosync's wait_for_all option
(most likely via the two_node option). See the votequorum(5) man page
for details.

You could set wait_for_all to 0 in corosync.conf, then boot. The living
node should try to fence the other one, and proceed if fencing succeeds.
You may want to set wait_for_all back to 1 once your cluster is back to
Ken Gaillot <kgaillot at redhat.com>

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