Hi, On Thu, Jun 10, 2010 at 09:40:09AM +0800, ben180 wrote: > Dear Dejan, > > Thanks for your reply. > > I reviewed the log of tibcodb2 and noticed that after step7.ServerB reboot, > ServerB CAN heard from ServerA. > > The strange thing is that when ServerA reboot, ServerA CANNOT heart from > ServerB. But when ServerB reboot, ServerB CAN heard from ServerA. > Why ServerA cannot recognize ServerB, but ServerB can recognize ServerA ? > Is that means something such as a firewall or the network switch port > restrict some kind of packet to send from ServerB ?
Don't know. Never heard of such a case. Some network equipment doesn't deal well with multicasting. > I'm curious about the way how suse cluster nodes communicate with each > other. Multicast UDP. > Can you point the way to shed me some light ? No, sorry. Thanks, Dejan > Thanks. > > > 2010/6/9 Dejan Muhamedagic <deja...@fastmail.fm> > > > Hi, > > > > On Wed, Jun 09, 2010 at 03:27:08PM +0800, ben180 wrote: > > > Dear Dejan, > > > > > > The test sequence is: > > > > > > 1.Service is running on ServerA(tibcodb) > > > 2.The Network Cable on ServerA is pulled out > > > 3.ServerB(tibcodb2) fenced ServerAļ¼ServerA reboot > > > 4.ServerB take over the service > > > 5.ServerA restart and the network is up > > > 6.ServerA fence ServerB and take over the service > > > 7.ServerB reboot > > > > > > > > > My question is : after step5:ServerA restart and the network is up, it > > > should not fence ServerB again but it did. > > > What happened between step5 and step6 ? > > > > According to the logs, the tibcodb never heard from the other > > node after reboot. That's strange. You sure you don't run > > firewall? Or something else preventing packets reaching the node. > > > > Thanks, > > > > Dejan > > > > _______________________________________________ > > Pacemaker mailing list: Pacemaker@oss.clusterlabs.org > > 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://developerbugs.linux-foundation.org/enter_bug.cgi?product=Pacemaker > > > _______________________________________________ > Pacemaker mailing list: Pacemaker@oss.clusterlabs.org > 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://developerbugs.linux-foundation.org/enter_bug.cgi?product=Pacemaker _______________________________________________ Pacemaker mailing list: Pacemaker@oss.clusterlabs.org 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://developerbugs.linux-foundation.org/enter_bug.cgi?product=Pacemaker
