When evacuating instances from a failed node and affinity filter is on, note that Compute won't evacuate failed instances

[Anne Gentle]

 If the instance is in the server group with affinity policy, the instance can't evacuate out the failed compute node.

I know there is soft affinity policy under development, but think of if the instance in server group with hard affinity means no way to get it back when compute node failed, it's really confuse.

I guess there should be some people concern that will violate the affinity policy. But I think the compute node already down, all the instance in that server group are down also, so I think we needn't care about the policy anymore.

See http://lists.openstack.org/pipermail/openstack-dev/2014-December/053313.html for more details. Request adding to Operations Guide.

[Tom Fifield (fifieldt)]

Affinity filter isn't documented, so marking as a duplicate of https://bugs.launchpad.net/openstack-manuals/+bug/1342628