nova/releasenotes/notes/remove_ChanceScheduler-0f4861f788adcfc7.yaml
zhangyangyang 92a459331f Remove ChanceScheduler
ChanceScheduler is deprecated in Pike [1] and will be removed in a
subsequent release.

[1] https://review.openstack.org/#/c/492210/

Change-Id: I44f9c1cabf9fc64b1a6903236bc88f5ed8619e9e
2018-08-20 15:56:13 +01:00

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YAML

---
upgrade:
- |
The ``chance_scheduler`` scheduler driver was deprecated in Pike
and has now been removed. You should enable the ``filter_scheduler``
driver instead. If ``chance_scheduler`` behavior is desired
(i.e. speed is valued over correctness) then configuring the
``filter_scheduler`` with only the ``AllHostsFilter`` enabled and
adjusting ``[filter_scheduler]/host_subset_size`` will provide similar
performance.