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[Matt Riedemann <mriedem.os@xxxxxxxxx>]

This is the change in the API causing the issue:
https://review.openstack.org/#/c/442162/

** Also affects: nova
   Importance: Undecided
       Status: New

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https://bugs.launchpad.net/bugs/1700359

Title:
  test_os_service_disable_enable fails with "ERROR (NotFound): Could not
  find binary nova-scheduler on host"

Status in OpenStack Compute (nova):
  Confirmed
Status in python-novaclient:
  Confirmed

Bug description:
  Seen here:

  http://logs.openstack.org/41/435141/19/gate/gate-novaclient-dsvm-
  functional-neutron-ubuntu-
  xenial/894e11f/console.html#_2017-06-24_07_44_54_947034

  2017-06-24 07:44:54.919101 | 2017-06-24 07:44:54.918 | {0} novaclient.tests.functional.v2.test_os_services.TestOsServicesNovaClientV211.test_os_service_disable_enable [1.927162s] ... FAILED
  2017-06-24 07:44:54.920189 | 2017-06-24 07:44:54.919 | 
  2017-06-24 07:44:54.921445 | 2017-06-24 07:44:54.921 | Captured traceback:
  2017-06-24 07:44:54.923085 | 2017-06-24 07:44:54.922 | ~~~~~~~~~~~~~~~~~~~
  2017-06-24 07:44:54.924463 | 2017-06-24 07:44:54.924 |     Traceback (most recent call last):
  2017-06-24 07:44:54.925897 | 2017-06-24 07:44:54.925 |       File "novaclient/tests/functional/v2/legacy/test_os_services.py", line 36, in test_os_service_disable_enable
  2017-06-24 07:44:54.927180 | 2017-06-24 07:44:54.926 |         service = self.nova('service-disable %s %s' % (host, serv.binary))
  2017-06-24 07:44:54.928693 | 2017-06-24 07:44:54.928 |       File "novaclient/tests/functional/base.py", line 314, in nova
  2017-06-24 07:44:54.930090 | 2017-06-24 07:44:54.929 |         endpoint_type, merge_stderr)
  2017-06-24 07:44:54.932181 | 2017-06-24 07:44:54.931 |       File "/opt/stack/new/python-novaclient/.tox/functional/local/lib/python2.7/site-packages/tempest/lib/cli/base.py", line 130, in nova
  2017-06-24 07:44:54.933322 | 2017-06-24 07:44:54.933 |         'nova', action, flags, params, fail_ok, merge_stderr)
  2017-06-24 07:44:54.934956 | 2017-06-24 07:44:54.934 |       File "/opt/stack/new/python-novaclient/.tox/functional/local/lib/python2.7/site-packages/tempest/lib/cli/base.py", line 374, in cmd_with_auth
  2017-06-24 07:44:54.936084 | 2017-06-24 07:44:54.935 |         self.cli_dir, prefix=self.prefix)
  2017-06-24 07:44:54.937305 | 2017-06-24 07:44:54.937 |       File "/opt/stack/new/python-novaclient/.tox/functional/local/lib/python2.7/site-packages/tempest/lib/cli/base.py", line 71, in execute
  2017-06-24 07:44:54.938430 | 2017-06-24 07:44:54.938 |         result_err)
  2017-06-24 07:44:54.939609 | 2017-06-24 07:44:54.939 |     tempest.lib.exceptions.CommandFailed: Command '['/opt/stack/new/python-novaclient/.tox/functional/bin/nova', '--os-username', 'admin', '--os-tenant-name', 'admin', '--os-password', 'secretadmin', '--os-auth-url', 'http://10.11.235.59/identity', '--os-compute-api-version', '2.11', '--os-endpoint-type', 'publicURL', 'service-disable', 'ubuntu-xenial-osic-cloud1-s3500-9498382', 'nova-scheduler']' returned non-zero exit status 1.
  2017-06-24 07:44:54.941114 | 2017-06-24 07:44:54.940 |     stdout:
  2017-06-24 07:44:54.943100 | 2017-06-24 07:44:54.942 |     
  2017-06-24 07:44:54.945711 | 2017-06-24 07:44:54.943 |     stderr:
  2017-06-24 07:44:54.947034 | 2017-06-24 07:44:54.946 |     ERROR (NotFound): Could not find binary nova-scheduler on host ubuntu-xenial-osic-cloud1-s3500-9498382. (HTTP 404) (Request-ID: req-540e1c6a-f5b2-4d9d-be81-fe5c047a72b1)

  This is due to changes in the compute API making it impossible to
  disable non-nova-compute services since there is no HostMapping for
  them, and the API looks up the host via host mapping to find which
  cell it's in.

  I'm actually surprised this isn't 100% failure:

  http://logstash.openstack.org/#dashboard/file/logstash.json?query=message%3A%5C%22ERROR%20(NotFound)%3A%20Could%20not%20find%20binary
  %20nova-
  scheduler%20on%20host%5C%22%20AND%20tags%3A%5C%22console%5C%22&from=7d

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