Public bug reported:
When starting a first instance on a host, the ImageProps weigher works
correctly, but when scheduling a second instance on it, then it returns
an exception due to a missing context :
2025-09-17 18:07:47.899 1 ERROR oslo_messaging.rpc.server [None
req-d611c529-7c8b-48f5-8465-5fe61d98eac4 ccdbae8178a34f08935c74eca6d6f29c
fb742349a3944923b9232fdc303a7a8b - - default default] Exception during message
handling: AttributeError: 'NoneType' object has no attribute 'is_admin'
2025-09-17 18:07:47.899 1 ERROR oslo_messaging.rpc.server Traceback (most
recent call last):
2025-09-17 18:07:47.899 1 ERROR oslo_messaging.rpc.server File
"/usr/lib/python3.9/site-packages/oslo_messaging/rpc/server.py", line 165, in
_process_incoming
2025-09-17 18:07:47.899 1 ERROR oslo_messaging.rpc.server res =
self.dispatcher.dispatch(message)
2025-09-17 18:07:47.899 1 ERROR oslo_messaging.rpc.server File
"/usr/lib/python3.9/site-packages/oslo_messaging/rpc/dispatcher.py", line 309,
in dispatch
2025-09-17 18:07:47.899 1 ERROR oslo_messaging.rpc.server return
self._do_dispatch(endpoint, method, ctxt, args)
2025-09-17 18:07:47.899 1 ERROR oslo_messaging.rpc.server File
"/usr/lib/python3.9/site-packages/oslo_messaging/rpc/dispatcher.py", line 229,
in _do_dispatch
2025-09-17 18:07:47.899 1 ERROR oslo_messaging.rpc.server result =
func(ctxt, **new_args)
2025-09-17 18:07:47.899 1 ERROR oslo_messaging.rpc.server File
"/usr/lib/python3.9/site-packages/oslo_messaging/rpc/server.py", line 244, in
inner
2025-09-17 18:07:47.899 1 ERROR oslo_messaging.rpc.server return
func(*args, **kwargs)
2025-09-17 18:07:47.899 1 ERROR oslo_messaging.rpc.server File
"/usr/lib/python3.9/site-packages/nova/scheduler/manager.py", line 224, in
select_destinations
2025-09-17 18:07:47.899 1 ERROR oslo_messaging.rpc.server selections =
self._select_destinations(
2025-09-17 18:07:47.899 1 ERROR oslo_messaging.rpc.server File
"/usr/lib/python3.9/site-packages/nova/scheduler/manager.py", line 251, in
_select_destinations
2025-09-17 18:07:47.899 1 ERROR oslo_messaging.rpc.server selections =
self._schedule(
2025-09-17 18:07:47.899 1 ERROR oslo_messaging.rpc.server File
"/usr/lib/python3.9/site-packages/nova/scheduler/manager.py", line 388, in
_schedule
2025-09-17 18:07:47.899 1 ERROR oslo_messaging.rpc.server hosts =
self._get_sorted_hosts(spec_obj, hosts, num)
2025-09-17 18:07:47.899 1 ERROR oslo_messaging.rpc.server File
"/usr/lib/python3.9/site-packages/nova/scheduler/manager.py", line 680, in
_get_sorted_hosts
2025-09-17 18:07:47.899 1 ERROR oslo_messaging.rpc.server weighed_hosts =
self.host_manager.get_weighed_hosts(
2025-09-17 18:07:47.899 1 ERROR oslo_messaging.rpc.server File
"/usr/lib/python3.9/site-packages/nova/scheduler/host_manager.py", line 622, in
get_weighed_hosts
2025-09-17 18:07:47.899 1 ERROR oslo_messaging.rpc.server return
self.weight_handler.get_weighed_objects(self.weighers,
2025-09-17 18:07:47.899 1 ERROR oslo_messaging.rpc.server File
"/usr/lib/python3.9/site-packages/nova/weights.py", line 134, in
get_weighed_objects
2025-09-17 18:07:47.899 1 ERROR oslo_messaging.rpc.server weights =
weigher.weigh_objects(weighed_objs, weighing_properties)
2025-09-17 18:07:47.899 1 ERROR oslo_messaging.rpc.server File
"/usr/lib/python3.9/site-packages/nova/weights.py", line 110, in weigh_objects
2025-09-17 18:07:47.899 1 ERROR oslo_messaging.rpc.server weight =
self._weigh_object(obj.obj, weight_properties)
2025-09-17 18:07:47.899 1 ERROR oslo_messaging.rpc.server File
"/usr/lib/python3.9/site-packages/nova/scheduler/weights/image_props.py", line
74, in _weigh_object
2025-09-17 18:07:47.899 1 ERROR oslo_messaging.rpc.server
insts.fill_metadata()
2025-09-17 18:07:47.899 1 ERROR oslo_messaging.rpc.server File
"/usr/lib/python3.9/site-packages/nova/objects/instance.py", line 1542, in
fill_metadata
2025-09-17 18:07:47.899 1 ERROR oslo_messaging.rpc.server updates =
db.instances_fill_metadata(
2025-09-17 18:07:47.899 1 ERROR oslo_messaging.rpc.server File
"/usr/lib/python3.9/site-packages/nova/db/utils.py", line 34, in wrapper
2025-09-17 18:07:47.899 1 ERROR oslo_messaging.rpc.server
nova.context.require_context(args[0])
2025-09-17 18:07:47.899 1 ERROR oslo_messaging.rpc.server File
"/usr/lib/python3.9/site-packages/nova/context.py", line 296, in require_context
2025-09-17 18:07:47.899 1 ERROR oslo_messaging.rpc.server if not
ctxt.is_admin and not is_user_context(ctxt):
2025-09-17 18:07:47.899 1 ERROR oslo_messaging.rpc.server AttributeError:
'NoneType' object has no attribute 'is_admin'
2025-09-17 18:07:47.899 1 ERROR oslo_messaging.rpc.server ^[[00m
** Affects: nova
Importance: Undecided
Status: New
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You received this bug notification because you are a member of Yahoo!
Engineering Team, which is subscribed to OpenStack Compute (nova).
https://bugs.launchpad.net/bugs/2125052
Title:
ImageProps weigher returns an exception after starting a second
instance
Status in OpenStack Compute (nova):
New
Bug description:
When starting a first instance on a host, the ImageProps weigher works
correctly, but when scheduling a second instance on it, then it
returns an exception due to a missing context :
2025-09-17 18:07:47.899 1 ERROR oslo_messaging.rpc.server [None
req-d611c529-7c8b-48f5-8465-5fe61d98eac4 ccdbae8178a34f08935c74eca6d6f29c
fb742349a3944923b9232fdc303a7a8b - - default default] Exception during message
handling: AttributeError: 'NoneType' object has no attribute 'is_admin'
2025-09-17 18:07:47.899 1 ERROR oslo_messaging.rpc.server Traceback (most
recent call last):
2025-09-17 18:07:47.899 1 ERROR oslo_messaging.rpc.server File
"/usr/lib/python3.9/site-packages/oslo_messaging/rpc/server.py", line 165, in
_process_incoming
2025-09-17 18:07:47.899 1 ERROR oslo_messaging.rpc.server res =
self.dispatcher.dispatch(message)
2025-09-17 18:07:47.899 1 ERROR oslo_messaging.rpc.server File
"/usr/lib/python3.9/site-packages/oslo_messaging/rpc/dispatcher.py", line 309,
in dispatch
2025-09-17 18:07:47.899 1 ERROR oslo_messaging.rpc.server return
self._do_dispatch(endpoint, method, ctxt, args)
2025-09-17 18:07:47.899 1 ERROR oslo_messaging.rpc.server File
"/usr/lib/python3.9/site-packages/oslo_messaging/rpc/dispatcher.py", line 229,
in _do_dispatch
2025-09-17 18:07:47.899 1 ERROR oslo_messaging.rpc.server result =
func(ctxt, **new_args)
2025-09-17 18:07:47.899 1 ERROR oslo_messaging.rpc.server File
"/usr/lib/python3.9/site-packages/oslo_messaging/rpc/server.py", line 244, in
inner
2025-09-17 18:07:47.899 1 ERROR oslo_messaging.rpc.server return
func(*args, **kwargs)
2025-09-17 18:07:47.899 1 ERROR oslo_messaging.rpc.server File
"/usr/lib/python3.9/site-packages/nova/scheduler/manager.py", line 224, in
select_destinations
2025-09-17 18:07:47.899 1 ERROR oslo_messaging.rpc.server selections =
self._select_destinations(
2025-09-17 18:07:47.899 1 ERROR oslo_messaging.rpc.server File
"/usr/lib/python3.9/site-packages/nova/scheduler/manager.py", line 251, in
_select_destinations
2025-09-17 18:07:47.899 1 ERROR oslo_messaging.rpc.server selections =
self._schedule(
2025-09-17 18:07:47.899 1 ERROR oslo_messaging.rpc.server File
"/usr/lib/python3.9/site-packages/nova/scheduler/manager.py", line 388, in
_schedule
2025-09-17 18:07:47.899 1 ERROR oslo_messaging.rpc.server hosts =
self._get_sorted_hosts(spec_obj, hosts, num)
2025-09-17 18:07:47.899 1 ERROR oslo_messaging.rpc.server File
"/usr/lib/python3.9/site-packages/nova/scheduler/manager.py", line 680, in
_get_sorted_hosts
2025-09-17 18:07:47.899 1 ERROR oslo_messaging.rpc.server weighed_hosts =
self.host_manager.get_weighed_hosts(
2025-09-17 18:07:47.899 1 ERROR oslo_messaging.rpc.server File
"/usr/lib/python3.9/site-packages/nova/scheduler/host_manager.py", line 622, in
get_weighed_hosts
2025-09-17 18:07:47.899 1 ERROR oslo_messaging.rpc.server return
self.weight_handler.get_weighed_objects(self.weighers,
2025-09-17 18:07:47.899 1 ERROR oslo_messaging.rpc.server File
"/usr/lib/python3.9/site-packages/nova/weights.py", line 134, in
get_weighed_objects
2025-09-17 18:07:47.899 1 ERROR oslo_messaging.rpc.server weights =
weigher.weigh_objects(weighed_objs, weighing_properties)
2025-09-17 18:07:47.899 1 ERROR oslo_messaging.rpc.server File
"/usr/lib/python3.9/site-packages/nova/weights.py", line 110, in weigh_objects
2025-09-17 18:07:47.899 1 ERROR oslo_messaging.rpc.server weight =
self._weigh_object(obj.obj, weight_properties)
2025-09-17 18:07:47.899 1 ERROR oslo_messaging.rpc.server File
"/usr/lib/python3.9/site-packages/nova/scheduler/weights/image_props.py", line
74, in _weigh_object
2025-09-17 18:07:47.899 1 ERROR oslo_messaging.rpc.server
insts.fill_metadata()
2025-09-17 18:07:47.899 1 ERROR oslo_messaging.rpc.server File
"/usr/lib/python3.9/site-packages/nova/objects/instance.py", line 1542, in
fill_metadata
2025-09-17 18:07:47.899 1 ERROR oslo_messaging.rpc.server updates =
db.instances_fill_metadata(
2025-09-17 18:07:47.899 1 ERROR oslo_messaging.rpc.server File
"/usr/lib/python3.9/site-packages/nova/db/utils.py", line 34, in wrapper
2025-09-17 18:07:47.899 1 ERROR oslo_messaging.rpc.server
nova.context.require_context(args[0])
2025-09-17 18:07:47.899 1 ERROR oslo_messaging.rpc.server File
"/usr/lib/python3.9/site-packages/nova/context.py", line 296, in require_context
2025-09-17 18:07:47.899 1 ERROR oslo_messaging.rpc.server if not
ctxt.is_admin and not is_user_context(ctxt):
2025-09-17 18:07:47.899 1 ERROR oslo_messaging.rpc.server AttributeError:
'NoneType' object has no attribute 'is_admin'
2025-09-17 18:07:47.899 1 ERROR oslo_messaging.rpc.server ^[[00m
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