Adding 3rd node to a 2-node cluster setup


New Member
Mar 17, 2018
Hi guys,

A year ago I built a 2-node cluster and followed instructions from this:
I set expected vote to 1 in /etc/corosync/corosync.conf because I don't need HA and will manually boot up VM in case one of the nodes went offline. Now I have acquired another server and want to add this node to existing cluster to complete a 3-node setup.

How may I proceed with this? Do I reverse everything from that post and config expected vote to 2 again or do I need to rebuild the whole cluster?

I've searched around the forum and have not found anyone tried to return from a 2-nod cluster to normal 3-node.


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