Hello Everyone,
I am looking for evacuation support in openstack.
>From what I could find, there are following two commands:
1. nova evacuate evacuated_server_name host_b --on-shared-storage
2. nova host-evacuate command
However, both seem to have some downtime.
What I looking for is something like:
1. Host is put in a state, like maintenance mode, so that no new VMs are
provisioned on it.
2. Do a live migration from this source host to any host chosen by the
scheduler.
This way, there won't be a downtime for the VMs and the host can be
removed / brought down for maintenance.
Apparently, "nova host-update" --maintenance provides the functionality I
am looking for, however, it is only supported for Xen and unimplemented
for KVM due to libvirt limitation.
Is there a way to work it around for KVM ..?
Regards,
Ashish
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