Hi, On Fri, Aug 31, 2007 at 07:36:34AM -0700, Harakiri wrote: > Hello List, > > suppose i have a cluster with 2 members, lets call > them server1 and server2. > > Before a network outage - a service configured for > heartbeat is running on server2 only, crm_mon shows > that both nodes are online on both servers. > > Now after the network outage, server1 starts up the > same service as server2 - this makes sense at is the > expected behaviour of a fail over. > > During this time the service is running on both > servers because they do not "see each other". > > After a few hours, the network is restored - server1 > sees that server2 is already (or still) running the > service in question - so it disables the service. > > server1 shows both nodes online and that the service > is running on server2. > > However, on server2 both nodes show as offline but the > service in question is still running and managed by > heartbeat. > > Is this the expected behaviour for a Split Brain > situation ? I.e. do not activate the node (server2) > after a split brain to be sure to not have > inconsistency ? > > For the record, after restarting heartbeat on server2 > - crm_mon shows both nodes as online. > > If this is the expected behaviour, can i disable it ? > Because the service in question can run after a split > brain - no harm will be done, no inconsitency can > exist. > > Or is it a bug - that after a network outage, and > restoring of the network, server2 shows both nodes > (itself, and server1) as offline and only a restart > repairs it to the online status ?
It is most probably a bug. The cluster should be able to recover from split brain. Please post the logs. Dejan > Thank you for your input > > > > ____________________________________________________________________________________ > Choose the right car based on your needs. Check out Yahoo! Autos new Car > Finder tool. > http://autos.yahoo.com/carfinder/ > _______________________________________________ > 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
