This issue was fixed in the openstack/nova wallaby-eom release.
** Changed in: nova/wallaby
Status: In Progress => Fix Released
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https://bugs.launchpad.net/bugs/1970383
Title:
Segment-aware scheduling fails for non-admin users
Status in OpenStack Compute (nova):
Fix Released
Status in OpenStack Compute (nova) wallaby series:
Fix Released
Status in OpenStack Compute (nova) xena series:
Fix Released
Status in OpenStack Compute (nova) yoga series:
Fix Released
Bug description:
This is a follow-up to https://bugs.launchpad.net/nova/+bug/1967314
Having deployed the Nova scheduler configuration for routed provider
networks as follows (Xena deployment @
7df9379d6661233174d49fb7be8eda0828a5e5ca), this was found to resolve
issues around scheduling of instances to appropriate hypervisors, but
it appears to have surfaced a side effect.
[scheduler]
query_placement_for_routed_network_aggregates = True
When the above configuration is enabled, creation of new instances for
admin users works correctly, but for non-admin users against the same
networks results in the following error:
285768 ERROR oslo_messaging.rpc.server
[req-79ca3cb3-eb52-4755-bba1-4c840c8ae5fc c35a1473225f422c90a6f75b25188bf2
d96f0cd70c6a4adbbbcf993502b264dc - default default] Exception during message
handling: K>
285768 ERROR oslo_messaging.rpc.server Traceback (most recent call last):
285768 ERROR oslo_messaging.rpc.server File
"/openstack/venvs/nova-24.0.0.0rc1/lib/python3.8/site-packages/oslo_messaging/rpc/server.py",
line 165, in _process_incoming
285768 ERROR oslo_messaging.rpc.server res =
self.dispatcher.dispatch(message)
285768 ERROR oslo_messaging.rpc.server File
"/openstack/venvs/nova-24.0.0.0rc1/lib/python3.8/site-packages/oslo_messaging/rpc/dispatcher.py",
line 309, in dispatch
285768 ERROR oslo_messaging.rpc.server return self._do_dispatch(endpoint,
method, ctxt, args)
285768 ERROR oslo_messaging.rpc.server File
"/openstack/venvs/nova-24.0.0.0rc1/lib/python3.8/site-packages/oslo_messaging/rpc/dispatcher.py",
line 229, in _do_dispatch
285768 ERROR oslo_messaging.rpc.server result = func(ctxt, **new_args)
285768 ERROR oslo_messaging.rpc.server File
"/openstack/venvs/nova-24.0.0.0rc1/lib/python3.8/site-packages/oslo_messaging/rpc/server.py",
line 241, in inner
285768 ERROR oslo_messaging.rpc.server return func(*args, **kwargs)
285768 ERROR oslo_messaging.rpc.server File
"/openstack/venvs/nova-24.0.0.0rc1/lib/python3.8/site-packages/nova/scheduler/manager.py",
line 154, in select_destinations
285768 ERROR oslo_messaging.rpc.server
request_filter.process_reqspec(context, spec_obj)
285768 ERROR oslo_messaging.rpc.server File
"/openstack/venvs/nova-24.0.0.0rc1/lib/python3.8/site-packages/nova/scheduler/request_filter.py",
line 387, in process_reqspec
285768 ERROR oslo_messaging.rpc.server filter(ctxt, request_spec)
285768 ERROR oslo_messaging.rpc.server File
"/openstack/venvs/nova-24.0.0.0rc1/lib/python3.8/site-packages/nova/scheduler/request_filter.py",
line 41, in wrapper
285768 ERROR oslo_messaging.rpc.server ran = fn(ctxt, request_spec)
285768 ERROR oslo_messaging.rpc.server File
"/openstack/venvs/nova-24.0.0.0rc1/lib/python3.8/site-packages/nova/scheduler/request_filter.py",
line 348, in routed_networks_filter
285768 ERROR oslo_messaging.rpc.server aggregates =
utils.get_aggregates_for_routed_network(
285768 ERROR oslo_messaging.rpc.server File
"/openstack/venvs/nova-24.0.0.0rc1/lib/python3.8/site-packages/nova/scheduler/utils.py",
line 1406, in get_aggregates_for_routed_network
285768 ERROR oslo_messaging.rpc.server segment_ids =
network_api.get_segment_ids_for_network(
285768 ERROR oslo_messaging.rpc.server File
"/openstack/venvs/nova-24.0.0.0rc1/lib/python3.8/site-packages/nova/network/neutron.py",
line 3721, in get_segment_ids_for_network
285768 ERROR oslo_messaging.rpc.server return [subnet['segment_id'] for
subnet in subnets
285768 ERROR oslo_messaging.rpc.server File
"/openstack/venvs/nova-24.0.0.0rc1/lib/python3.8/site-packages/nova/network/neutron.py",
line 3722, in <listcomp>
285768 ERROR oslo_messaging.rpc.server if subnet['segment_id'] is not
None]
285768 ERROR oslo_messaging.rpc.server KeyError: 'segment_id'
285768 ERROR oslo_messaging.rpc.server
It appears that the subnet dictionaries are returned empty from the
Neutron client library in this case, causing the KeyError.
As far as I can see, a matching command line request for 'openstack
subnet show X' as the same requesting user correctly includes the
'segment_id', but I don't know how similar this code path and the
permissions handling is.
I'd be happy to test out other requests or obtain additional logs if
useful.
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