Hi Andreas,
From the point of view of pcs, pacemaker and corosync, it is possible
to create a one-node cluster, run resources in it, and add another node
afterwards. Obviously, when the single node is lost for whatever reason,
there is no other node to run the resources.
You should also consider whether the cluster's workload supports this
and what steps are necessary to make it work in this scenario.
Regards,
Tomas
Dne 31. 07. 25 v 8:46 Andreas Mock napsal(a):
Hi all,
I have to upgrade an old pacemaker cluster consisting of two nodes.
(There is no chance of rolling update).
Is it possible to create a pacemaker “cluster” starting with only one
node and afterwards attach the second node?
Best regards
Andreas
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