[ClusterLabs] Corosync maximum nodes

Christine Caulfield ccaulfie at redhat.com
Mon Jan 30 03:37:21 EST 2017

On 27/01/17 09:43, Гюльнара Невежина wrote:
> 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.. 
> If anybody knows how many nodes I can add to future HA cluster? 

Even at 64 nodes, corosync needs some tuning to make it reliable. If you
want to go above around 32 nodes then pacemaker-remote is probably the
least stressful (and recommended) way of doing it.



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