On Tue, Feb 07, 2012 at 02:03:32PM +0100, Michael Schwartzkopff wrote: > > On Mon, Feb 06, 2012 at 04:48:26PM -0800, Chet Burgess wrote: > > > Greetings, > > > > > > I'm some what new to pacemaker and have been playing around with a > > > number of configurations in a lab. Most recently I've been testing a > > > multistate resource using the ofc:pacemaker:Stateful example RA. > > > > > > While I've gotten the agent to work and notice that if I shutdown or > > > kill a node the resources migrate I can't seem to figure out the > > > proper way to migrate the resource between nodes when they are both > > > up. > > > > > > For regular resources I've used "crm resource migrate <rsc>" without > > > issue. However when I try this with a multistate resource it doesn't > > > seem to work. When I run the command it just puts the slave node into > > > a stopped state. If I try and tell it to migrate specifically to the > > > slave node it claims to already be running their (which I suppose in a > > > sense it is). > > > > the crm shell does not support roles for the "move" or "migrate" command > > (yet; maybe in newer versions. Dejan?). > > > > What you need to do is set a location constraint on the role. > > * force master role off from one node: > > > > location you-name-it resource-id \ > > rule $role=Master -inf: \ > > #uname eq node-where-it-should-be-slave > > > > * or force master role off from all but one node, > > note the double negation in this one: > > > > location you-name-it resource-id \ > > rule $role=Master -inf: \ > > #uname ne node-where-it-should-be-master > > These constraints would prevent the MS resource to run in Master state even > on > that node. Even in case the preferred node is not available any more. This > might be not what Chet wanted.
Well, it is just what crm resource migrate does, otherwise. After migration, you obviously need to "unmigrate", i.e. delete that constraint again. -- : Lars Ellenberg : LINBIT | Your Way to High Availability : DRBD/HA support and consulting http://www.linbit.com DRBD® and LINBIT® are registered trademarks of LINBIT, Austria. _______________________________________________ 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
