<html><head><meta http-equiv="Content-Type" content="text/html charset=us-ascii"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; ">Hi Matthew,<div><br></div><div>I think you should be able to do all this with host aggregates?</div><div><br></div><div><a href="http://docs.openstack.org/trunk/openstack-compute/admin/content/host-aggregates.html">http://docs.openstack.org/trunk/openstack-compute/admin/content/host-aggregates.html</a></div><div>Note: availability zones are no longer tied to aggregates in Grizzly. The docs need to be updated.</div><div><br></div><div><br></div><div>Cheers,</div><div>Sam</div><div><br></div><div><br><div><div>On 23/03/2013, at 3:27 AM, Matthew Sherborne <<a href="mailto:msherborne@gmail.com">msherborne@gmail.com</a>> wrote:</div><br class="Apple-interchange-newline"><blockquote type="cite"><div dir="ltr"><div><div><div><div>All comments appreciated.<br><br><a href="https://blueprints.launchpad.net/nova/+spec/spare-hosts">https://blueprints.launchpad.net/nova/+spec/spare-hosts</a><br><br></div>In summary, when one sets up a nova install, they can set some of the machines to spare.<br>
<br></div>Spare means disabled plus the guarantee that there are no customer vms running on there.<br><br></div><div>It differs from maintenance mode in that setting a spare that has VMs on it, will just fail, rather than cause a migration.<br>
</div><div><br></div>Spare machines can be used for quick chassis swaps or can be enabled to receive an emergency migration, or when an end user needs more space than was initially planned.<br><br>Having 'spare' machines in your install a useful safety buffer to let you know when to start adding more.<br>
<br></div><div><a href="https://wiki.openstack.org/wiki/Blueprint-spare-hosts#Possible_later_additions">https://wiki.openstack.org/wiki/Blueprint-spare-hosts#Possible_later_additions</a><br></div><div><br>----<br><br></div>
<div>Please comment on implementation ideas, additional features, and perceived usefulness.<br><br></div><div>Many Thanks,<br></div><div>Matthew Sherborne<br></div></div>
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