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[Matt Riedemann <mriedem.os@xxxxxxxxx>]

Which release is nova in the API?

As you can see from the service listing, nova CLI does it with the
latest microversion negotiated between novaclient and the server so you
see the service id as a uuid (microversion 2.53+) but openstack compute
service list uses microversion 2.1 by default, so you see the int id.

I think the issue is you're trying to delete the service using openstack
client but with the integer id and starting in pike you need to use the
uuid to uniquely identify the service in a cell.

See the note here:

https://docs.openstack.org/python-openstackclient/latest/cli/command-
objects/compute-service.html#compute-service-delete

"If using --os-compute-api-version 2.53 or greater, the ID is a UUID
which can be retrieved by listing compute services using the same 2.53+
microversion."

Anyway, try deleting the service using microversion 2.53 and the service
id as a uuid and see if that solves the issue.

** Changed in: nova
       Status: New => Invalid

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https://bugs.launchpad.net/bugs/1852665

Title:
  HostMappingNotFound in wigi.py

Status in OpenStack Compute (nova):
  Invalid

Bug description:
  It seems to be diffrent from #1780727.

  # openstack compute service delete 26

  
  Failed to delete compute service with ID '26': 发生意外 API 错误。请在 http://bugs.launchpad.net/nova/ 处报告此错误，并且附上 Nova API 日志（如果可能）。
  <class 'nova.exception.HostMappingNotFound'> (HTTP 500) (Request-ID: req-a693a664-5834-48c6-acd9-c92d8b2eea28)

  nova-api-log:
  2019-11-15 08:41:23.576 11235 ERROR nova.api.openstack.wsgi [req-099cb32c-dfbb-4eaf-a067-a3737720977f 7c177645d83f4a769d51ab4b9801a90d 04627ab3503248cb8d714ac1a44f543f - default default] Unexpected exception in API method: HostMappingNotFound: \u4e3b\u673a 'computer3713hpdl580'\u6ca1\u6709\u6620\u5c04\u5230\u4efb\u4f55\u5355\u5143
  2019-11-15 08:41:23.576 11235 ERROR nova.api.openstack.wsgi Traceback (most recent call last):
  2019-11-15 08:41:23.576 11235 ERROR nova.api.openstack.wsgi   File "/usr/lib/python2.7/site-packages/nova/api/openstack/wsgi.py", line 801, in wrapped
  2019-11-15 08:41:23.576 11235 ERROR nova.api.openstack.wsgi     return f(*args, **kwargs)
  2019-11-15 08:41:23.576 11235 ERROR nova.api.openstack.wsgi   File "/usr/lib/python2.7/site-packages/nova/api/openstack/compute/services.py", line 237, in delete
  2019-11-15 08:41:23.576 11235 ERROR nova.api.openstack.wsgi     service.host)
  2019-11-15 08:41:23.576 11235 ERROR nova.api.openstack.wsgi   File "/usr/lib/python2.7/site-packages/nova/exception_wrapper.py", line 79, in wrapped
  2019-11-15 08:41:23.576 11235 ERROR nova.api.openstack.wsgi     function_name, call_dict, binary, tb)
  2019-11-15 08:41:23.576 11235 ERROR nova.api.openstack.wsgi   File "/usr/lib/python2.7/site-packages/oslo_utils/excutils.py", line 220, in __exit__
  2019-11-15 08:41:23.576 11235 ERROR nova.api.openstack.wsgi     self.force_reraise()
  2019-11-15 08:41:23.576 11235 ERROR nova.api.openstack.wsgi   File "/usr/lib/python2.7/site-packages/oslo_utils/excutils.py", line 196, in force_reraise
  2019-11-15 08:41:23.576 11235 ERROR nova.api.openstack.wsgi     six.reraise(self.type_, self.value, self.tb)
  2019-11-15 08:41:23.576 11235 ERROR nova.api.openstack.wsgi   File "/usr/lib/python2.7/site-packages/nova/exception_wrapper.py", line 69, in wrapped
  2019-11-15 08:41:23.576 11235 ERROR nova.api.openstack.wsgi     return f(self, context, *args, **kw)
  2019-11-15 08:41:23.576 11235 ERROR nova.api.openstack.wsgi   File "/usr/lib/python2.7/site-packages/nova/compute/api.py", line 5416, in remove_host_from_aggregate
  2019-11-15 08:41:23.576 11235 ERROR nova.api.openstack.wsgi     mapping = objects.HostMapping.get_by_host(context, host_name)
  2019-11-15 08:41:23.576 11235 ERROR nova.api.openstack.wsgi   File "/usr/lib/python2.7/site-packages/oslo_versionedobjects/base.py", line 184, in wrapper
  2019-11-15 08:41:23.576 11235 ERROR nova.api.openstack.wsgi     result = fn(cls, context, *args, **kwargs)
  2019-11-15 08:41:23.576 11235 ERROR nova.api.openstack.wsgi   File "/usr/lib/python2.7/site-packages/nova/objects/host_mapping.py", line 100, in get_by_host
  2019-11-15 08:41:23.576 11235 ERROR nova.api.openstack.wsgi     db_mapping = cls._get_by_host_from_db(context, host)
  2019-11-15 08:41:23.576 11235 ERROR nova.api.openstack.wsgi   File "/usr/lib/python2.7/site-packages/oslo_db/sqlalchemy/enginefacade.py", line 993, in wrapper
  2019-11-15 08:41:23.576 11235 ERROR nova.api.openstack.wsgi     return fn(*args, **kwargs)
  2019-11-15 08:41:23.576 11235 ERROR nova.api.openstack.wsgi   File "/usr/lib/python2.7/site-packages/nova/objects/host_mapping.py", line 95, in _get_by_host_from_db
  2019-11-15 08:41:23.576 11235 ERROR nova.api.openstack.wsgi     raise exception.HostMappingNotFound(name=host)
  2019-11-15 08:41:23.576 11235 ERROR nova.api.openstack.wsgi HostMappingNotFound: \u4e3b\u673a 'computer3713hpdl580'\u6ca1\u6709\u6620\u5c04\u5230\u4efb\u4f55\u5355\u5143
  2019-11-15 08:41:23.576 11235 ERROR nova.api.openstack.wsgi 
  。

  # openstack compute service list |egrep "(3713|ID)"
  | ID | Binary           | Host                | Zone      | Status   | State | Updated At                 |
  | 26 | nova-compute     | computer3713hpdl580 | sugonZone | disabled | down  | 2019-07-24T01:25:20.000000 |

  # nova service-list |egrep "(3713|Id)"
  | Id                                   | Binary           | Host                | Zone      | Status   | State | Updated_at                 | Disabled Reason | Forced down |
  | 8045be15-4866-4d2f-8cb5-79cca0f9744f | nova-compute     | computer3713hpdl580 | sugonZone | disabled | down  | 2019-07-24T01:25:20.000000 | hostnotexist    | False       |

  
  # openstack module list
  +-----------------+--------+
  | Field           | Value  |
  +-----------------+--------+
  | barbicanclient  | 4.7.2  |
  | cinderclient    | 4.0.1  |
  | designateclient | 2.10.0 |
  | keystoneclient  | 3.17.0 |
  | novaclient      | 11.0.0 |
  | openstack       | 0.17.2 |
  | openstackclient | 3.16.2 |
  | swiftclient     | 3.6.0  |
  +-----------------+--------+

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