On Tue, 2018-10-23 at 21:20 +0800, T. Ladd Omar wrote: > For the question one, I don't think start-failure-is-fatal is good > way for me. It barely has no interval for retrying and easily leads > to flooding log output in a short time. > > T. Ladd Omar <mwang...@gmail.com> 于2018年10月23日周二 下午9:06写道: > > Hi all, I send this message to get some answers for my questions > > about Pacemaker. > > 1. In order to cleanup start-failed resources automatically, I add > > failure-timeout attribute for resources, however, the common way to > > trigger the recovery is by cluster-recheck whose interval is 15min > > by default. I wonder how lower value could I set for the cluster- > > recheck-interval. I had to let the failed resources recover > > somewhat quickly while little impact taken by the more frequent > > cluster-recheck. > > Or, is there another way to automatically cleanup start-failed > > resources ?
failure-timeout with a lower cluster-recheck-interval is fine. I don't think there's ever been solid testing on what a lower bound for the interval is. I've seen users set it as low as 1 minute, but that seems low to me. My gut feeling is 5 minutes is a good trade-off. The simpler your cluster is (# nodes / # resources / features used), the lower the number could be. > > 2. Is Pacemaker suitable for the Master-Slave model HA ? I had some > > productive problems when I use Pacemaker. If only one resource > > stopped on one node, should I failover all this node for the whole > > cluster? If not, the transactions from the ports on this node may > > fail for this failure. If yes, it seems to be big action for just > > one resource failure. Definitely, master/slave operation is one of the most commonly used Pacemaker features. You have the flexibility of failing over any combination of resources you want. Look into clone resources, master/slave clones, colocation constraints, and the on-fail property of operations. -- Ken Gaillot <kgail...@redhat.com> _______________________________________________ Users mailing list: Users@clusterlabs.org https://lists.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