Hi, On Thu, Feb 11, 2010 at 02:49:26PM +0100, Frank Lazzarini wrote: > Hi, > > I have the following setup, I have two nodes in a cluster, all working > fine with the resources. If i take one down the other node becomes > master. But what if I pull the plug on the communication interface? As I > understood it I need to use STONITH but how can one node shoot the other > in the head if it doesn't see the node anymore?
You have to make sure that the communication path to the fencing device is either very resilient or completely independent from the heartbeat communication path. In other words, the setup has to recover successfully from a single failure. > Or would I need node > fencing. Node fencing and stonith are for mostly the same thing. > My question is actually just to get some advice on how to deal with a > situation like this. > > > | | > [node1]-------X-----[node2] > eth1 > > > If eth1 is down ( say the cross link cable is plugged ) how can I say > that only node1 will be master? By fencing the other node. See if http://www.clusterlabs.org/doc/crm_fencing.html makes it any clearer. Thanks, Dejan > > Thanks for any answers ... > _______________________________________________ > Linux-HA mailing list > [email protected] > http://lists.linux-ha.org/mailman/listinfo/linux-ha > See also: http://linux-ha.org/ReportingProblems _______________________________________________ Linux-HA mailing list [email protected] http://lists.linux-ha.org/mailman/listinfo/linux-ha See also: http://linux-ha.org/ReportingProblems
