[ClusterLabs] Advisory order for cluster-managed resources
kgaillot at redhat.com
Tue Apr 3 15:58:51 EDT 2018
On Tue, 2018-04-03 at 16:24 +0000, Sam Gardner wrote:
> "In short, I'd recommend separate constraints :) e.g. start rscA then
> promote rscB, promote rscB then start rscC."
> I've fiddled around with my code and gotten it to do this.
> Just out of curiosity, is there an upper limit on the number of
> individual constraints that we can put in place?
> 10 or 15 resources colocated on the same node, starting up in a
> consistent order will require (at least) 2x the number of constraints
> in this scheme - it seemed to me that sets would simplify things but
> perhaps not.
Groups are easier to follow if you have simple colocation+order
Sets can help with more complicated set-ups, but they are tricky to get
right and always difficult to read.
Ken Gaillot <kgaillot at redhat.com>
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