Could you please give a hint: how to use fencing in case the nodes are all in different geo-distributed datacenters? How people do that? Because there could be a network disconnection between datacenters, and we have no chance to send a stonith signal somewhere.
On Wednesday, February 4, 2015, Andrea <a.bac...@codices.com> wrote: > Digimer <lists@...> writes: > > > > > That fence failed until the network came back makes your fence method > > less than ideal. Will it eventually fence with the network still failed? > > > > Most importantly though; Cluster resources blocked while the fence was > > pending? If so, then your cluster is safe, and that is the most > > important part. > > > Hi Digimer > > I'm using for fencing a remote NAS, attached via iscsi target. > During network failure, for example on node2, each node try to fence other > node. > Fencing action on node1 get success, but on node2 fail, because it can't > see > iscsi target(network is down!) . > I thinks it's the reason why node2 doesn't reboot now, because it can't > make > operation on key reservation and watchdog can't check for this. > When network come back, watchdog can check for key registration and reboot > node2. > > For clustered filesystem I planned to use ping resource with location > constraint as described here > > http://clusterlabs.org/doc/en-US/Pacemaker/1.0/html/Pacemaker_Explained/ch09s03s03s02.html > If the node can't see iscsi target..then..stop AppServer, Filesystem ecc > > But it doesn't works. In the node with network failure i see in the log > that > pingd is set to 0 but Filesystem resource doesn't stop. > > I will continue testing... > > Thanks > Andrea > > > > > > > _______________________________________________ > Pacemaker mailing list: Pacemaker@oss.clusterlabs.org <javascript:;> > http://oss.clusterlabs.org/mailman/listinfo/pacemaker > > 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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