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Does OpenStack dynamically scale or migrate instances when compute node become overloaded?

I'm beginner in OpenStack and trying to study and understand its principles. During considerations if and how to implement PoC of OpenStack we've wondered if there is a something like RHEV Evenly Distributed or vmware DSR. I've tried to search through OpenStack Architecture Design Guide and other documents but haven't got direct answer.

In other words, when several instances on a compute node "get crazy" and overload the node will controller somehow move some instances away from this compute node to balance workload automatically?

Thanks