Re: Allow votequorum to degrade to a single node without qdisc?

[Jason Harley <jharley@xxxxxxxxxx>]

On Nov 7, 2013, at 4:02 AM, Christine Caulfield <ccaulfie@xxxxxxxxxx> wrote:

What you have should be fine with the addition of "wait_for_all: 1". You probably don't auto_tie_breaker unless there is a likelihood of a 2+2 split on the network.

"two_node" means you have exactly 2 nodes in the cluster (not ever more) so isn't relevant and allow_downscale is solving a different problem than you have.

With last_man_standing the cluster will survive being degraded to 1 node provided there is not a large outage and more than 2 nodes fail at a time.

Thank you, Chrissie!  ‘corosync-quorumtool’ now reports that my cluster is quorate down to a single node with some quick testing.  Pacemaker (1.1.10+git20130802-1ubuntu1), however, seems to be ignoring Corosync’s assertion that the cluster quorate with a single node.

./JRH

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