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 $role=Master -inf: \
#uname ne node-where-it-should-be-master
Cheers,
Lars
---
: Lars Ellenberg
: LINBIT | Your Way to High Availability
: DRBD/HA support and consulting http://www.linbit.com
> The only method I've found to safely and reliable migrate a multistate
> resource from one node to another is I think it has something to do
> with the resource constraints I used to prefer a particular node, but
> I'm not entirely sure how the constraints and the master/slave state
> updating stuff works.
>
> Am I using the wrong tool to migrate a multistate resource or is my
> configuration wrong in some way? Any input greatly appreciated.
> Thank you.
>
>
> Configuration:
> r...@tst3.local1.mc:/home/cfb$ crm configure show
> node tst3.local1.mc.metacloud.com
> node tst4.local1.mc.metacloud.com
> primitive stateful-test ocf:pacemaker:Stateful \
> op monitor interval="30s" role="Slave" \
> op monitor interval="31s" role="Master"
> ms ms-test stateful-test \
> meta clone-node-max="1" notify="false" master-max="1"
> master-node-max="1" target-role="Master"
> location ms-test_constraint_1 ms-test 25: tst3.local1.mc.metacloud.com
> location ms-test_constraint_2 ms-test 20: tst4.local1.mc.metacloud.com
> property $id="cib-bootstrap-options" \
> cluster-infrastructure="openais" \
> dc-version="1.1.5-01e86afaaa6d4a8c4836f68df80ababd6ca3902f" \
> last-lrm-refresh="1325273678" \
> expected-quorum-votes="2" \
> no-quorum-policy="ignore" \
> stonith-enabled="false"
> rsc_defaults $id="rsc-options" \
> resource-stickiness="100"
>
> --
> Chet Burgess
> c...@liquidreality.org
>
>
>
>
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