On 04/26/2016 10:49 AM, Robert Dahlem wrote: > On 26.04.2016 10:33, Bogdan Dobrelya wrote: > >> Is it possible to run several instances of a Corosync/Pacemaker clusters >> on a node? Can a node be a member of several clusters, so they could put >> resources there? I'm sure it's doable with separate nodes or containers, >> but that's not the case. >> >> My case is to separate data-critical resources, like storage or VIPs, >> from the complex resources like DB or MQ clusters. >> >> The latter should run with no-quorum-policy=ignore as they know how to >> deal with network partitions/split-brain, use own techniques to protect >> data and don't want external fencing from a Pacemaker, which >> no-quorum-policy/STONITH is. >> >> The former must use STONITH (or a stop policy, if it's only a VIP), as >> they don't know how to deal with split-brain, for example. > > And how would you cope with one of the storage nodes STONITHing one of > the DB nodes?
For that case, one should use separate clusters and sets of nodes. My case is like a VIP and a DB resources only. When the VIP has to be stopped in a minority partition, there is no need for STONITH but the no-quorum-policy=stop. While the DB resource should not be affected and keep running at the same node, either in a separate cluster - if that were possible - or in the same cluster - if quorum policy allowed to "exclude" resources from the stop lists. Too bad none of two is an option. > > Regards, > Robert > > _______________________________________________ > Users mailing list: [email protected] > 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 > -- Best regards, Bogdan Dobrelya, Irc #bogdando _______________________________________________ Users mailing list: [email protected] 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
