That is what happened here :(. When 2 nodes went down, two resources got scheduled on single node. Isn't there any way to stop this from happening. Colocation constraint is not helping.
-Regards Nikhil On Sat, Oct 22, 2016 at 12:57 AM, Vladislav Bogdanov <bub...@hoster-ok.com> wrote: > 21.10.2016 19:34, Andrei Borzenkov wrote: > >> 14.10.2016 10:39, Vladislav Bogdanov пишет: >> >>> >>> use of utilization (balanced strategy) has one caveat: resources are >>> not moved just because of utilization of one node is less, when nodes >>> have the same allocation score for the resource. So, after the >>> simultaneus outage of two nodes in a 5-node cluster, it may appear >>> that one node runs two resources and two recovered nodes run >>> nothing. >>> >>> >> I call this a feature. Every resource move potentially means service >> outage, so it should not happen without explicit action. >> >> > In a case I describe that moves could be easily prevented by using > stickiness (it increases allocation score on a current node). > The issue is that it is impossible to "re-balance" resources in > time-frames when stickiness is zero (over-night maintenance window). > > > > Original 'utilization' strategy only limits resource placement, it is >>> not considered when choosing a node for a resource. >>> >>> >> >> _______________________________________________ >> Users mailing list: Users@clusterlabs.org >> http://clusterlabs.org/mailman/listinfo/users >> >> Project Home: http://www.clusterlabs.org >> Getting started: http://www.clusterlabs.org/doc/Cluster_from_Scratch.pdf >> Bugs: http://bugs.clusterlabs.org >> >> > > _______________________________________________ > Users mailing list: Users@clusterlabs.org > http://clusterlabs.org/mailman/listinfo/users > > Project Home: http://www.clusterlabs.org > Getting started: http://www.clusterlabs.org/doc/Cluster_from_Scratch.pdf > Bugs: http://bugs.clusterlabs.org >
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