I don't remember well, But I think in Redhat 6.5 you need to use cman+pacemaker and please your config and you need to be sure you have fencing configured.
2015-11-24 11:18 GMT+01:00 Cayab, Jefrey E. <jca...@gmail.com>: > Hi all, > > I searched online but couldn't find a detailed answer. OS is RHEL 6.5. > > Problem: > I have 2 servers which was setup fine (MySQL cluster is on it, DRBD for the > data disk on local disk) on which these 2 servers needs to be migrated to > other location. When it was migrated, the DRBD has to change from local disk > to SAN LUN which was migrated ok but the cluster began experiencing weird > behavior. Then the 2 nodes are shutdown and booted together, each server can > see each other as online via "crm_mon -1" but when one of the node's > pacemaker process is restarted, the status of that node from the other node > stays offline/stopped, even if I reboot that node, it doesn't join back the > cluster. > > Other observation - if these 2 servers boot up together, both see online as > above and when I stop pacemaker process on the Active node, the other node > takes over the resources which is good but even if I start back the > pacemaker process on the other node, it's not able to take back the > resources. Kind of like, only one failover can happen and cannot failback. > > > What I did: > I removed Pacemaker and Corosync via YUM > Rebooted the OS > Verified no more Pacemaker/Corosync packages > Installed back Pacemaker and Corosync via YUM > When I did "crm_mon -1", I'm surprised to see that configuration is still > there. > > After the reinstallation, still experiencing the same behavior and noticed > that DRBD is reporting Failed disk - only a reboot of the node can bring it > back to UpToDate. > > Please advise on the correct procedure to wipe out the configuration and > reinstallation. > > I will share the logs shortly. > > Thanks, > Jef > > _______________________________________________ > 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://bugs.clusterlabs.org > -- .~. /V\ // \\ /( )\ ^`~'^ _______________________________________________ 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://bugs.clusterlabs.org