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[Yang Youseok <1862611@xxxxxxxxxxxxxxxxxx>]

Public bug reported:

For stable/stein

Honestly, I do not sure this is bug or something that I am missing. At
least it lacks of information so I report this.

When segment firstly set for a subnet, Neutron are trying to make 'host
aggregate' in nova, 'resource provider' in placement, and add host to
'host aggregate'

I found when Neutorn add 'host' to 'host aggregate', the 'host' is came
'ironic node uuid' from networking-baremetal. But the problem is nova
deos not know the 'host' since only thing that nova knows is host from
ironic-nova-compute rather thant 'ironic node uuid'


>From neutron/services/segments/plugin.py _create_nova_inventory(),
self.n_client.aggregates.add_host(aggregate.id, mapping.host)

Nova emit the exception like below

2020-02-10 16:51:36.769 14048 DEBUG nova.api.openstack.wsgi [req-211fca1a-6d19-42b6-8d33-6f5b3d46e256 4931b135200f4b3d9e638d37aba85879 3f7b5c5c19a84d10984d49ab1226569f - default default] Action: 'action', calling method: <bound method AggregateController._add_host of <nova.api.openstack.compute.aggregates.AggregateController object at 0x7f91d7d1bf28>>, body: {"add_host": {"host": "27004f76-2606-4e4a-980e-a385a01f04de"}} _process_stack /opt/openstack/src/nova/nova/api/openstack/wsgi.py:520
2020-02-10 16:51:36.792 14048 DEBUG nova.compute.api [req-211fca1a-6d19-42b6-8d33-6f5b3d46e256 4931b135200f4b3d9e638d37aba85879 3f7b5c5c19a84d10984d49ab1226569f - default default] Found 2 cells: 84dd085e-770b-45d4-afbd-3744a34c23e0(cell1),00000000-0000-0000-0000-000000000000(cell0) load_cells /opt/openstack/src/nova/nova/compute/api.py:244
2020-02-10 16:51:36.793 14048 DEBUG oslo_concurrency.lockutils [req-211fca1a-6d19-42b6-8d33-6f5b3d46e256 4931b135200f4b3d9e638d37aba85879 3f7b5c5c19a84d10984d49ab1226569f - default default] Lock "84dd085e-770b-45d4-afbd-3744a34c23e0" acquired by "nova.context.set_target_cell.<locals>.get_or_set_cached_cell_and_set_connections" :: waited 0.000s inner /opt/openstack/lib/python3.6/site-packages/oslo_concurrency/lockutils.py:327
2020-02-10 16:51:36.793 14048 DEBUG oslo_concurrency.lockutils [req-211fca1a-6d19-42b6-8d33-6f5b3d46e256 4931b135200f4b3d9e638d37aba85879 3f7b5c5c19a84d10984d49ab1226569f - default default] Lock "84dd085e-770b-45d4-afbd-3744a34c23e0" released by "nova.context.set_target_cell.<locals>.get_or_set_cached_cell_and_set_connections" :: held 0.001s inner /opt/openstack/lib/python3.6/site-packages/oslo_concurrency/lockutils.py:339
2020-02-10 16:51:36.801 14048 DEBUG oslo_concurrency.lockutils [req-211fca1a-6d19-42b6-8d33-6f5b3d46e256 4931b135200f4b3d9e638d37aba85879 3f7b5c5c19a84d10984d49ab1226569f - default default] Lock "00000000-0000-0000-0000-000000000000" acquired by "nova.context.set_target_cell.<locals>.get_or_set_cached_cell_and_set_connections" :: waited 0.000s inner /opt/openstack/lib/python3.6/site-packages/oslo_concurrency/lockutils.py:327
2020-02-10 16:51:36.801 14048 DEBUG oslo_concurrency.lockutils [req-211fca1a-6d19-42b6-8d33-6f5b3d46e256 4931b135200f4b3d9e638d37aba85879 3f7b5c5c19a84d10984d49ab1226569f - default default] Lock "00000000-0000-0000-0000-000000000000" released by "nova.context.set_target_cell.<locals>.get_or_set_cached_cell_and_set_connections" :: held 0.001s inner /opt/openstack/lib/python3.6/site-packages/oslo_concurrency/lockutils.py:339
2020-02-10 16:51:36.812 14048 INFO nova.api.openstack.wsgi [req-211fca1a-6d19-42b6-8d33-6f5b3d46e256 4931b135200f4b3d9e638d37aba85879 3f7b5c5c19a84d10984d49ab1226569f - default default] HTTP exception thrown: Compute host 27004f76-2606-4e4a-980e-a385a01f04de could not be found.
2020-02-10 16:51:36.813 14048 DEBUG nova.api.openstack.wsgi [req-211fca1a-6d19-42b6-8d33-6f5b3d46e256 4931b135200f4b3d9e638d37aba85879 3f7b5c5c19a84d10984d49ab1226569f - default default] Returning 404 to user: Compute host 27004f76-2606-4e4a-980e-a385a01f04de could not be found. __call__ /opt/openstack/src/nova/nova/api/openstack/wsgi.py:943


Is it okay to ask Nova to register ironic node uuid for host aggregate?

Thanks.

** Affects: neutron
     Importance: Undecided
         Status: New

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https://bugs.launchpad.net/bugs/1862611

Title:
  Neutron try to register invalid host to nova aggregate for ironic
  routed network

Status in neutron:
  New

Bug description:
  For stable/stein

  Honestly, I do not sure this is bug or something that I am missing. At
  least it lacks of information so I report this.

  When segment firstly set for a subnet, Neutron are trying to make
  'host aggregate' in nova, 'resource provider' in placement, and add
  host to 'host aggregate'

  I found when Neutorn add 'host' to 'host aggregate', the 'host' is
  came 'ironic node uuid' from networking-baremetal. But the problem is
  nova deos not know the 'host' since only thing that nova knows is host
  from ironic-nova-compute rather thant 'ironic node uuid'


  From neutron/services/segments/plugin.py _create_nova_inventory(),
  self.n_client.aggregates.add_host(aggregate.id, mapping.host)

  Nova emit the exception like below

  2020-02-10 16:51:36.769 14048 DEBUG nova.api.openstack.wsgi [req-211fca1a-6d19-42b6-8d33-6f5b3d46e256 4931b135200f4b3d9e638d37aba85879 3f7b5c5c19a84d10984d49ab1226569f - default default] Action: 'action', calling method: <bound method AggregateController._add_host of <nova.api.openstack.compute.aggregates.AggregateController object at 0x7f91d7d1bf28>>, body: {"add_host": {"host": "27004f76-2606-4e4a-980e-a385a01f04de"}} _process_stack /opt/openstack/src/nova/nova/api/openstack/wsgi.py:520
  2020-02-10 16:51:36.792 14048 DEBUG nova.compute.api [req-211fca1a-6d19-42b6-8d33-6f5b3d46e256 4931b135200f4b3d9e638d37aba85879 3f7b5c5c19a84d10984d49ab1226569f - default default] Found 2 cells: 84dd085e-770b-45d4-afbd-3744a34c23e0(cell1),00000000-0000-0000-0000-000000000000(cell0) load_cells /opt/openstack/src/nova/nova/compute/api.py:244
  2020-02-10 16:51:36.793 14048 DEBUG oslo_concurrency.lockutils [req-211fca1a-6d19-42b6-8d33-6f5b3d46e256 4931b135200f4b3d9e638d37aba85879 3f7b5c5c19a84d10984d49ab1226569f - default default] Lock "84dd085e-770b-45d4-afbd-3744a34c23e0" acquired by "nova.context.set_target_cell.<locals>.get_or_set_cached_cell_and_set_connections" :: waited 0.000s inner /opt/openstack/lib/python3.6/site-packages/oslo_concurrency/lockutils.py:327
  2020-02-10 16:51:36.793 14048 DEBUG oslo_concurrency.lockutils [req-211fca1a-6d19-42b6-8d33-6f5b3d46e256 4931b135200f4b3d9e638d37aba85879 3f7b5c5c19a84d10984d49ab1226569f - default default] Lock "84dd085e-770b-45d4-afbd-3744a34c23e0" released by "nova.context.set_target_cell.<locals>.get_or_set_cached_cell_and_set_connections" :: held 0.001s inner /opt/openstack/lib/python3.6/site-packages/oslo_concurrency/lockutils.py:339
  2020-02-10 16:51:36.801 14048 DEBUG oslo_concurrency.lockutils [req-211fca1a-6d19-42b6-8d33-6f5b3d46e256 4931b135200f4b3d9e638d37aba85879 3f7b5c5c19a84d10984d49ab1226569f - default default] Lock "00000000-0000-0000-0000-000000000000" acquired by "nova.context.set_target_cell.<locals>.get_or_set_cached_cell_and_set_connections" :: waited 0.000s inner /opt/openstack/lib/python3.6/site-packages/oslo_concurrency/lockutils.py:327
  2020-02-10 16:51:36.801 14048 DEBUG oslo_concurrency.lockutils [req-211fca1a-6d19-42b6-8d33-6f5b3d46e256 4931b135200f4b3d9e638d37aba85879 3f7b5c5c19a84d10984d49ab1226569f - default default] Lock "00000000-0000-0000-0000-000000000000" released by "nova.context.set_target_cell.<locals>.get_or_set_cached_cell_and_set_connections" :: held 0.001s inner /opt/openstack/lib/python3.6/site-packages/oslo_concurrency/lockutils.py:339
  2020-02-10 16:51:36.812 14048 INFO nova.api.openstack.wsgi [req-211fca1a-6d19-42b6-8d33-6f5b3d46e256 4931b135200f4b3d9e638d37aba85879 3f7b5c5c19a84d10984d49ab1226569f - default default] HTTP exception thrown: Compute host 27004f76-2606-4e4a-980e-a385a01f04de could not be found.
  2020-02-10 16:51:36.813 14048 DEBUG nova.api.openstack.wsgi [req-211fca1a-6d19-42b6-8d33-6f5b3d46e256 4931b135200f4b3d9e638d37aba85879 3f7b5c5c19a84d10984d49ab1226569f - default default] Returning 404 to user: Compute host 27004f76-2606-4e4a-980e-a385a01f04de could not be found. __call__ /opt/openstack/src/nova/nova/api/openstack/wsgi.py:943


  Is it okay to ask Nova to register ironic node uuid for host
  aggregate?

  Thanks.

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