Thinking about my favorite use case for lifecycle plug points for cloud
providers (i.e., giving something a chance to make a holistic placement
decision), it occurs to me that one more is needed: a scale-down plug
point. A plugin for this point has a distinctive job: to decide which
group member(s) to remove from a scaling group (i.e.,
OS::Heat::AutoScalingGroup or OS::Heat::InstanceGroup or
OS::Heat::ResourceGroup or AWS::AutoScaling::AutoScalingGroup). The
plugin's signature could be something like this: given a list of group
members and a number to remove, return the list of members to remove (or,
equivalently, return the list of members to keep). What do you think?
Thanks,
Mike
_______________________________________________
OpenStack-dev mailing list
[email protected]
http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack-dev
