On 10/08/2015 10:16 AM, priyanka wrote: > Hi, > > We are trying to build a HA setup for our servers using DRBD + Corosync > + pacemaker stack. > > Attached is the configuration file for corosync/pacemaker and drbd.
A few things I noticed: * Don't set become-primary-on in the DRBD configuration in a Pacemaker cluster; Pacemaker should handle all promotions to primary. * I'm no NFS expert, but why is res_exportfs_root cloned? Can both servers export it at the same time? I would expect it to be in the group before res_exportfs_export1. * Your constraints need some adjustment. Partly it depends on the answer to the previous question, but currently res_fs (via the group) is ordered after res_exportfs_root, and I don't see how that could work. > We are getting errors while testing this setup. > 1. When we stop corosync on Master machine say server1(lock), it is > Stonith'ed. In this case slave-server2(sher) is promoted to master. > But when server1(lock) reboots res_exportfs_export1 is started on > both the servers and that resource goes into failed state followed by > servers going into unclean state. > Then server1(lock) reboots and server2(sher) is master but in unclean > state. After server1(lock) comes up, server2(sher) is stonith'ed and > server1(lock) is slave(the only online node). > When server2(sher) comes up, both the servers are slaves and resource > group(rg_export) is stopped. Then server2(sher) becomes Master and > server1(lock) is slave and resource group is started. > At this point configuration becomes stable. > > > PFA logs(syslog) of server2(sher) after it is promoted to master till it > is first rebooted when resource exportfs goes into failed state. > > Please let us know if the configuration is appropriate. From the logs we > could not figure out exact reason of resource failure. > Your comment on this scenario will be very helpful. > > Thanks, > Priyanka > > > > _______________________________________________ > Users mailing list: Users@clusterlabs.org > http://clusterlabs.org/mailman/listinfo/users > > Project Home: http://www.clusterlabs.org > Getting started: http://www.clusterlabs.org/doc/Cluster_from_Scratch.pdf > Bugs: http://bugs.clusterlabs.org > _______________________________________________ Users mailing list: Users@clusterlabs.org http://clusterlabs.org/mailman/listinfo/users Project Home: http://www.clusterlabs.org Getting started: http://www.clusterlabs.org/doc/Cluster_from_Scratch.pdf Bugs: http://bugs.clusterlabs.org
