----- Original Message ----- > From: "Hermes Flying" <[email protected]> > To: [email protected] > Sent: Friday, November 30, 2012 4:04:34 PM > Subject: [Linux-HA] Some help on understanding how HA issues are addressed > by pacemaker > > Hi, > I am looking into using your facilities to have high availability on > my system. I am trying to figure out some things. I hope you guys > could help me. > I am interested in knowing how pacemaker migrates a VIP and how a > splitbrain situation is address by your facilities. > To be specific: I am interested in the following setup: > > 2 linux machines. Each machine runs a load balancer and a Tomcat > instance. > If I understand correctly pacemaker will be responsible to assign the > main VIP to one of the nodes. > > My questions are: > 1)Will pacemaker monitor/restart the load balancers on each machine > in case of crash? > 2) How does pacemaker decide to migrate the VIP to the other node? > 3) Do the pacemakers in each machine communicate? If yes how do you > handle network failure? Could I end up with split-brain? > 4) Generally how is split-brain addressed using pacemaker? > 5) Could pacemaker monitor Tomcat? > > As you can see I am interested in maintain quorum in a two-node > configuration. If you can help me with this info to find a proper > direction it would be much appreciated! > > Thank you
Hey, You may or may not have looked at this already, but this is a good place to start, http://clusterlabs.org/doc/ Read chapter one of this document. http://clusterlabs.org/doc/en-US/Pacemaker/1.1-pcs/html-single/Pacemaker_Explained/index.html Running through this 2 node cluster exercise will likely answer many of your questions. http://clusterlabs.org/doc/en-US/Pacemaker/1.1-pcs/html-single/Clusters_from_Scratch/index.html -- Vossel > _______________________________________________ > 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
