Hello!
I'm very sorry to disturb you with such question but I can't find
information if there is maximum nodes' limit in corosync? I've found a bug
report https://bugzilla.redhat.com/show_bug.cgi?id=905296#c5 with "Corosync
has hardcoded maximum number of nodes to 64" but it was posted 4 years
ago..

This limit is gone in 2.x, but it doesn't mean corosync is able to handle much more without finetuning.

If anybody knows how many nodes I can add to future HA cluster?

http://lists.clusterlabs.org/pipermail/users/2017-January/004764.html

But honestly, as Chrissie told, pacemaker-remote is usually better way to go (as long as you are not planning to use dlm on all nodes).

Honza


Any tips or links would be much appreciated.
Thank you!



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