Hello —
I have a four node Corosync (2.3.0-1ubuntu4) cluster configured and happy.
However, I’d like to be able to allow the cluster to degrade to a single node
in an (extreme) failure state — but still require (at least) two nodes to
establish the cluster. Using qdisc is not an option in my environment, so I’m
curious if I can achieve this using new features in ‘Needle’ like
‘last_man_standing’ and ‘auto_tie_breaker’.
This is the ‘quorum’ block from my corosync.conf:
> quorum {
> provider: corosync_votequorum
> expected_votes: 4
> last_man_standing: 1
> last_man_standing_window: 10000
> auto_tie_breaker: 1
> }
Is this as simple as telling votequorum that I have a two node cluster
(‘two_node: 1’) and enabling ‘allow_downscale’?
./JRH
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