[Openstack] unexpected distribution of compute instances in queens

Mike Carden mike.carden at gmail.com
Thu Dec 20 01:32:16 UTC 2018

Just an update on this. I have found a 'fix' that is more like a workaround
in that I still don't know what causes the problem.

So, to start with, all VMs are being spawned on a single node and while I
can live migrate to another node, the scheduler never sends VMs there.

To fix this, I disable the hypervisor on the node that is getting all the
VMs, then I spawn a bunch of VMs. They go to the node that still has its
hypervisor enabled. Then I re-enable the disabled hypervisor and spawn a
bunch of VMs. Now they get evenly split across the two nodes.


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