On 20/09/16 06:59 AM, Stefan Bauer wrote: > Hi, > > i run a 2 node cluster and want to be save in split-brain scenarios. For > this i setup external/ipmi to stonith the other node.
Please use 'fence_ipmilan'. I believe that the older external/ipmi are deprecated (someone correct me if I am wrong on this). > Some possible issues jumped to my mind and i would ike to find the best > practice solution: > > - I have a primitive for each node to stonith. Many documents and guides > recommend to never let them run on the host it should fence. I would > setup clone resources to avoid dealing with locations that would also > influence scoring. Does that make sense? Since v1.1.10 of pacemaker, you don't have to worry about this. Pacemaker is smart enough to know where to run a fence call from in order to terminate a target. > - Monitoring operation on the stonith primitive is dangerous. I read > that if monitor operations fail for the stonith device, stonith action > is triggered. I think its not clever to give the cluster the option to > fence a node just because it has an issue to monitor a fence device. > That should not be a reason to shutdown a node. What is your opinion on > this? Can i just set the primitive monitor operation to disabled? Monitoring is how you will detect that, for example, the IPMI cable failed or was unplugged. I do not believe the node will get fenced on fence agent monitor failing... At least not by default. -- Digimer Papers and Projects: https://alteeve.ca/w/ What if the cure for cancer is trapped in the mind of a person without access to education? _______________________________________________ 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
