Hello, I'm trying to find a good solution to properly shutdown a DRBD (master/slave) cluster in case of outages. The problem, at least for me, is that if you simply shutdown one node, when it comes back in 99% on the cases you'll end up with split brain scenarios. So for me the proper logic in case of power failure looks like (to simplify things I call nodes node1 and node2): 1. power failure occurs 2. wait, let say 60 sec, and then put node2 in standby mode 3. in order to minimize power consumption power off node2 4. when only 5 min of battery is left power off node1
The question is, what would be the proper way to perform the step 3 after the step 2 (you have to be sure that node 2 in standby mode before power this node down). There might be another solutions, so I'd appreciate any thoughts regarding this subject. Regards, Vlad. _______________________________________________ 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
