On 27 May 2014, at 1:16 am, Vladimir Kuklin <vkuk...@mirantis.com> wrote:
> Hi all > > We are working on HA solutions for OpenStack(-related) services and figured > out that sometimes we need clones to be notified if one of the cluster nodes > running clone instances goes offline. E.g., we need this information to make > RabbitMQ AMQP broker cluster to forget this node until it goes up again. This > is easily achievable if we stop the instance on the node - then notification > is sent to clone instances and everything is fine. But what can we do if node > goes offline unexpectedly? Is there any way to notify other clones that the > slave is dead and perform corresponding actions? Currently no, but it sounds like a useful feature to add. > > One of the ways we figured out is to implement additional cluster monitoring > action in resource OCF and purge "dead" nodes, but it looks a little bit > overwhelming and inconvenient. Is there a chance we missed some attributes > that allow configuration of such behaviour that pacemaker notifies other > clones on node offline/fence/cold_shutdown ? > > > > -- > Yours Faithfully, > Vladimir Kuklin, > Fuel Library Tech Lead, > Mirantis, Inc. > +7 (495) 640-49-04 > +7 (926) 702-39-68 > Skype kuklinvv > 45bk3, Vorontsovskaya Str. > Moscow, Russia, > www.mirantis.com > www.mirantis.ru > vkuk...@mirantis.com > _______________________________________________ > 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
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