Hi, On Fri, Aug 31, 2007 at 09:05:54AM -0700, Harakiri wrote: > Hello, > > > It is most probably a bug. The cluster should be > > able to recover > > from split brain. Please post the logs. > > > > Dejan > > attached to this message are the log files. > > server1_network_down.txt - the log of server1 when the > network went down > > server2_network_down.txt - the log of server2 when the > network went down > > server1_network_restored.txt - the log of server1 when > the network has been restored > > server2_network_restored.txt - the log of server2 when > the network has been restored > > resource_my_service = the service which has been > configured for heartbeat
Read the logs and there everything looks fine. Don't know why crm_mon shows the nodes as offline on that one node. In the logs, the nodes claimed to have voted a DC: Aug 25 04:35:53 server1 crmd: [24516]: info: update_dc:utils.c Set DC to server1 (1.0.6) Aug 25 04:35:55 server2 crmd: [19821]: info: update_dc:utils.c Set DC to server1 (1.0.6) which they wouldn't do unless they established the current membership. BTW, this seems to be a bit older version of Heartbeat. Perhaps you can upgrade to the latest stable (2.1.2). Thanks, Dejan > Thanks for your help > > > --- Dejan Muhamedagic <[EMAIL PROTECTED]> wrote: > > > 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 > > > > > > > ____________________________________________________________________________________ > Got a little couch potato? > Check out fun summer activities for kids. > http://search.yahoo.com/search?fr=oni_on_mail&p=summer+activities+for+kids&cs=bz > _______________________________________________ Linux-HA mailing list [email protected] http://lists.linux-ha.org/mailman/listinfo/linux-ha See also: http://linux-ha.org/ReportingProblems
