Il 26/04/2016 13:39, K Aravind ha scritto: > Hi all > Have some doubts regarding pacemaker > It would be of great help if you could help me out > > 1.Pacemaker handles split brains using quorum and stonith only right .? > It is not a case where a split brain is resolved wothout the use of > stonith and qourm am I right ?
Not by default. But if you set no-quorum-policy according to what you want to achieve you may obtain something similar to a split brain resolution. > 2.Resource stickiness /location cannot be used to solve split brain right ? Again, it depends. For example if you set a location based upon the network connectivity, then you may obtain that a disconnected node will not run any resource. That said if you want to be 100% sure you must use stonith. > 3.let's say I have qourum enabled but not stonith for a two node cluster > ..can it be used for solving split brain ..if so can the user > application can add rules for quorum to elect appropriate / preffered > the master ..similar to resource stickiness ? Again, see no-quorum-policy. > 4.can I configure the default role for a node ? > Meaning ...let's say I have a two node master slave setup > ,master node goes down and the slave is elected as a master so far so > good now let's say the older master which was down comes up. So is there > a way I can configure it be slave by default meaning whenever a new node > comes up it be a slave and not a master You can work on default resource stickiness to INFINITY in this case. > 5.Can I have node roles other than master or slave in a master slave > cluster say unknown ? No, AFAIK. > 6.Is there notification from pacemaker when a split brain happens , > When an election beings , > When an election is done > Thanks > Aravind Just in the logs, but you can setup something like email notification for each action. I don't know how things are now, but in the past those were a lot of mail (and when I say a lot I mean a LOT). Bye, -- RaSca [email protected] http://www.miamammausalinux.org _______________________________________________ Users mailing list: [email protected] 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
