Thank you very much for the information. Just for clarification, when you say reserved hosts, do you mean that I must keep unloaded virtualization hosts in reserve? Or can Masakari move instances from a downed host to an already loaded host that has open capacity? -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.openstack.org/pipermail/openstack/attachments/20180504/5616f5bf/attachment.html>