Open Stack

Dear All,

I'd like to have some confirmation about the mechanism that is going to 
be used to inform Heat's clients about instance create and destroy in an 
auto-scaling group. I am referring to the wiki page at 
https://wiki.openstack.org/wiki/Heat/AutoScaling.

I assume, but I may be wrong, that the same eventing mechanism than the 
one being used for stack creation will be used...

An instance create in an auto-scaling group will generate an IN_PROGRESS 
event for the instance being created followed by CREATE_COMPLETE or 
CREATE_FAILED based on the value returned by cfn-signal. Similarly, an 
instance destroy will generate a DELETE_IN_PROGRESS event for the 
instance being destroyed followed by a DELETE_COMPLETE or DELETE_FAILED 
in case the instance can't be destroyed in the group.

Adding a group id in the event details will be helpful to figure out 
what group the instance belongs to.

Thanks in advance for the clarification.
Patrick