Hello OpenStack-Discuss,

I was wondering how I as an admin can (live-)migrate instances for which the user applied a server-group with affinity.
Looking at the API ([1]), there is no (obvious) way to migrate multiple instances or a server-group "en bloc".

But migrating a single instance out of a group does result in:

[...]
2023-06-01 12:20:00.489 6910 INFO nova.scheduler.host_manager [req-01d9 83eb5 9c8353142098 - default default] Host filter ignoring hosts:
2023-06-01 12:20:00.490 6910 INFO nova.filters [req-01d9 83eb5 9c8353142098 - default default] Filter ServerGroupAffinityFilter returned 0 hosts
2023-06-01 12:20:00.491 6910 INFO nova.filters [req-01d9 83eb5 9c8353142098 - default default] Filtering removed all hosts for the request with instance ID '2476cfdd-9315-4bff-ba3e-d3be5874593f'. Filter results: ['AvailabilityZoneFilter: (start: 10, end: 10)', 'ComputeFilter: (start: 10, end: 10)', 'ComputeCapabilitiesFilter: (start: 10, end: 9)', 'ImagePropertiesFilter: (start: 9, end: 9)', 'ServerGroupAntiAffinityFilter: (start: 9, end: 9)', 'ServerGroupAffinityFilter: (start: 9, end: 0)']
[...] 

Am I missing something here? Or am I just holding this wrong?



Regards

Christian



[1] https://docs.openstack.org/api-ref/compute/?expanded=force-migration-complete-action-force-complete-action-detail#live-migrate-server-os-migratelive-action