On 01/24/2019 02:15 PM, Lentes, Bernd wrote: > > ----- On Jan 22, 2019, at 6:35 PM, Andrei Borzenkov [email protected] wrote: > > >> This is another problem - if cluster requires stonith, it won't statr >> resources with another node UNCLEAN and fencing attempt apparently failed. > Let's assume a running two-node cluster. Now node1 needs to be fenced because > of some failure. > node2 fences node 1, but, although fencing was successful, for whatever > reason, the cluster > does not recognize the fencing and node1 stays UNCLEAN. > Does that mean that node2 can't take the resources from node 1 and start them > ?
Yes, that is the aim of fencing - to assure that a node where we can't really say if it is running certain resources or not is brought to a defined state (off). And of course it has to be verified that this fencing action has succeeded. But usually you won't run into big trouble if a fencing action actually goes OK as you described but somehow misses to convey that information to the node that triggered the fencing. Fencing is usually gonna be repeated till it succeeds. Klaus > > Bernd > > > Helmholtz Zentrum Muenchen > Deutsches Forschungszentrum fuer Gesundheit und Umwelt (GmbH) > Ingolstaedter Landstr. 1 > 85764 Neuherberg > www.helmholtz-muenchen.de > Aufsichtsratsvorsitzende: MinDirig'in Petra Steiner-Hoffmann > Stellv.Aufsichtsratsvorsitzender: MinDirig. Dr. Manfred Wolter > Geschaeftsfuehrer: Prof. Dr. med. Dr. h.c. Matthias Tschoep, Heinrich Bassler > Registergericht: Amtsgericht Muenchen HRB 6466 > USt-IdNr: DE 129521671 > > _______________________________________________ > Users mailing list: [email protected] > https://lists.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: [email protected] https://lists.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
