I boot an instance with --hint group={uuid}, and then delete this instance group after instance status is active. Then evacuate the instance, nova-compute raise the exception.
File "/usr/lib/python2.7/site-packages/nova/compute/manager.py", line 3255, in rebuild_instance
migration, request_spec, volume_id, allocs)
File "/usr/lib/python2.7/site-packages/nova/compute/manager.py", line 3319, in _do_rebuild_instance_with_claim
self._do_rebuild_instance(*args, **kwargs)
File "/usr/lib/python2.7/site-packages/nova/compute/manager.py", line 3342, in _do_rebuild_instance
self._validate_instance_group_policy(context, instance, hints)
File "/usr/lib/python2.7/site-packages/nova/compute/manager.py", line 1388, in _validate_instance_group_policy
_do_validation(context, instance, group_hint)
File "/usr/lib/python2.7/site-packages/oslo_concurrency/lockutils.py", line 328, in inner
return f(*args, **kwargs)
File "/usr/lib/python2.7/site-packages/nova/compute/manager.py", line 1370, in _do_validation
group = objects.InstanceGroup.get_by_hint(context, group_hint)
File "/usr/lib/python2.7/site-packages/nova/objects/instance_group.py", line 342, in get_by_hint
return cls.get_by_uuid(context, hint)
File "/usr/lib/python2.7/site-packages/oslo_versionedobjects/base.py", line 177, in wrapper
args, kwargs)
File "/usr/lib/python2.7/site-packages/nova/conductor/rpcapi.py", line 240, in object_class_action_versions
args=args, kwargs=kwargs)
File "/usr/lib/python2.7/site-packages/oslo_messaging/rpc/client.py", line 181, in call
transport_options=self.transport_options)
File "/usr/lib/python2.7/site-packages/oslo_messaging/transport.py", line 129, in _send
transport_options=transport_options)
File "/usr/lib/python2.7/site-packages/oslo_messaging/_drivers/amqpdriver.py", line 674, in send
transport_options=transport_options)
File "/usr/lib/python2.7/site-packages/oslo_messaging/_drivers/amqpdriver.py", line 664, in _send
raise result
InstanceGroupNotFound_Remote: Instance group 89454517-7af6-4758-8477-32d3a35c9f3a could not be found.
Traceback (most recent call last):
File "/usr/lib/python2.7/site-packages/nova/conductor/manager.py", line 128, in _object_dispatch
return getattr(target, method)(*args, **kwargs)
File "/usr/lib/python2.7/site-packages/oslo_versionedobjects/base.py", line 184, in wrapper
result = fn(cls, context, *args, **kwargs)
File "/usr/lib/python2.7/site-packages/nova/objects/instance_group.py", line 311, in get_by_uuid
db_group = db.instance_group_get(context, uuid)
File "/usr/lib/python2.7/site-packages/nova/db/api.py", line 925, in instance_group_get
return IMPL.instance_group_get(context, group_uuid)
File "/usr/lib/python2.7/site-packages/nova/db/sqlalchemy/api.py", line 241, in wrapped
return f(context, *args, **kwargs)
File "/usr/lib/python2.7/site-packages/nova/db/sqlalchemy/api.py", line 6004, in instance_group_get
raise exception.InstanceGroupNotFound(group_uuid=group_uuid)
InstanceGroupNotFound: Instance group 89454517-7af6-4758-8477-32d3a35c9f3a could not be found.
I cannot reproduce the issue on master with devstack. What nova version you are using?