[ClusterLabs] start one node only?

[Ken Gaillot]

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?
> 
> TIA

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
normal.
-- 
Ken Gaillot <kgaillot at redhat.com>