[ClusterLabs] Quorum With Two Nodes And an "observer" Questions
ariel_bis2030 at yahoo.com
Fri Sep 18 03:32:48 EDT 2015
Right now we are building a(nother) cluster, that basically built from two
physical servers with VMs running resources managed by Pacemaker. Since
two-node setup, and I'm constrained only to that two beefy servers, I
that this would mean quorum=1 which also means no majority vote.
The VMs have multiple cluster, eg. gateway cluster, infrastructure
I'm thinking I could (probably) ask for another (weak) server which would
function as an observer, a quorum-maker. Quorum should be possible with 2
against 1, right? I think this is possible, by setting resources priority
towards -infinity from going to that quorum-maker server which means
should run on those two beefy servers.
I probably will have to run multiple instance of corosync and pacemaker,
different configuration and authkey files (for each cluster in the beefy
servers) in a small-ish baremetal centos box.
My question, is this actually feasible? Anyone have run into this
come up with such idea too? Got anything to share about this?
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