Ok, one more doubt. How heartbeat + pacemaker is going to detect that the drbd is in stand alone state. There is no cluster partition. Only drbd is disconnected.
On Mon, Dec 7, 2009 at 4:40 PM, Andrew Beekhof <and...@beekhof.net> wrote: > On Sun, Dec 6, 2009 at 8:31 PM, unni krishnan <unnikrishna...@gmail.com> > wrote: >> Hi, >> >> We are using a cluster setup something like : >> >> http://picasaweb.google.com/lh/photo/e_uAYjG-8nh7oRZzXDp5HA?feat=directlink >> >> We are using >> >> OpenVZ for Virtualization >> DRBD with ocfs2 in dual primary mode >> heartbeat + pacemaker for HA >> >> Currently I have not added the drbd in pacemaker. But added the VPS as >> resources in pacemaker, so that the VPS can fail over or fail back. >> >> My question is, if I remove the cross over cable that connects the >> drbd then the two server will run in >> >> Primary/Unknown state and since the heartbeat connection which is >> through another cable is not broken, the VPS will run in two nodes. >> >> So the data written to two drdb devices in two nodes are different and >> it is not possible to discard data in any node. What is the better >> solution for this problem. Please give some hints, thanks :-) > > In a word, fencing. > You need to configure a stonith resource and set the stonith-enabled > option to true. > > _______________________________________________ > Pacemaker mailing list > Pacemaker@oss.clusterlabs.org > http://oss.clusterlabs.org/mailman/listinfo/pacemaker > -- Regards, Unni _______________________________________________ Pacemaker mailing list Pacemaker@oss.clusterlabs.org http://oss.clusterlabs.org/mailman/listinfo/pacemaker
