Hi all, I am using the openstack python api. After I boot an instance, I will keep polling the instance status to check if its status changes from BUILD to ACTIVE. My question is: does openstack have a notification system that will let us know when a vm changes state (e.g. goes into ACTIVE state)? then we won't have to keep on polling it when we need to know the change of the machine state. Thanks xin -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.openstack.org/pipermail/openstack/attachments/20131018/f88754f9/attachment.html>