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[Matt Riedemann <mriedem.os@xxxxxxxxx>]

*** This bug is a duplicate of bug 1757273 ***
    https://bugs.launchpad.net/bugs/1757273

** This bug has been marked a duplicate of bug 1751692
   os_region_name an unnecessary required option for placement

** This bug is no longer a duplicate of bug 1751692
   os_region_name an unnecessary required option for placement

** This bug has been marked a duplicate of bug 1757273
   nova-compute fails to start even if [placement]/region_name is set

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https://bugs.launchpad.net/bugs/1761150

Title:
  service fails when deprecated 'os_region_name' is not configured in
  [placement]

Status in OpenStack Compute (nova):
  New

Bug description:
  Hello!
  I've encountered the bug when configuring nova-compute service on new node:
  ...
  2018-04-04 14:55:42.082 41113 INFO nova.service [req-be886a45-032a-441b-8934-0d586d159edb - - - - -] Starting compute node (version 17.0.1)
  2018-04-04 14:55:42.083 41113 ERROR oslo_service.service [req-be886a45-032a-441b-8934-0d586d159edb - - - - -] Error starting thread.: PlacementNotConfigured: This compute is not configured to talk to the placement service. Configure the [placement] section of nova.conf and restart the service.
  2018-04-04 14:55:42.083 41113 ERROR oslo_service.service Traceback (most recent call last):
  2018-04-04 14:55:42.083 41113 ERROR oslo_service.service   File "/usr/lib/python2.7/dist-packages/oslo_service/service.py", line 729, in run_service
  2018-04-04 14:55:42.083 41113 ERROR oslo_service.service     service.start()
  2018-04-04 14:55:42.083 41113 ERROR oslo_service.service   File "/usr/lib/python2.7/dist-packages/nova/service.py", line 161, in start
  2018-04-04 14:55:42.083 41113 ERROR oslo_service.service     self.manager.init_host()
  2018-04-04 14:55:42.083 41113 ERROR oslo_service.service   File "/usr/lib/python2.7/dist-packages/nova/compute/manager.py", line 1137, in init_host
  2018-04-04 14:55:42.083 41113 ERROR oslo_service.service     raise exception.PlacementNotConfigured()
  2018-04-04 14:55:42.083 41113 ERROR oslo_service.service PlacementNotConfigured: This compute is not configured to talk to the placement service. Configure the [placement] section of nova.conf and restart the service.
  ...

  Steps to reproduce
  ------------------
  1. Install and configure nova on controller node, make sure that all nova services are running correctly
  2. Configure nova on compute node:
     follow Queens Series Release Notes (https://docs.openstack.org/releasenotes/nova/queens.html), in [placement] comment out deprecated 'os_region_name' and configure 'region_name'
  3. Restart nova-compute service

  Expected result
  ------------------
  Nova-compute service started and running without errors

  Actual result
  ------------------
  Nova-compute service failed with PlacementNotConfigured error

  Workaround
  ------------------
  1. Comment out 'region_name' in [placement] and configure deprecated 'os_region_name':
     [placement]
     os_region_name = RegionOne
     auth_type = password
     auth_url =
     project_name = service
     project_domain_name = default
     username = placement
     user_domain_name = default
     password =
     #region_name = RegionOne
  2. Restart nova-compute service, сheck your log 
  ...
  2018-04-04 15:08:59.684 41544 INFO nova.compute.resource_tracker [req-58502787-deca-4c5a-b4b9-8c9f59531720 - - - - -] Compute node record created for compute01-api:compute01.demo.infra.cloud.loc with uuid: d2d36c03-e597-4831-84f6-03c78f331354
  2018-04-04 15:09:07.380 41544 INFO nova.scheduler.client.report [req-58502787-deca-4c5a-b4b9-8c9f59531720 - - - - -] [req-9a468e08-7eaa-4f91-a8d9-dca8bbad3b8f] Created resource provider record via placement API for resource provider with UUID d2d36c03-e597-4831-84f6-03c78f331354 and name compute01.demo.infra.cloud.loc.
  2018-04-04 15:09:15.774 41544 INFO nova.compute.resource_tracker [req-58502787-deca-4c5a-b4b9-8c9f59531720 - - - - -] Final resource view: name=compute01.demo.infra.cloud.loc phys_ram=257004MB used_ram=512MB phys_disk=243174GB used_disk=0GB total_vcpus=48 used_vcpus=0 pci_stats=[]
  ...

  My Environment
  ------------------
  Ubuntu 16.04.4 LTS, 4.4.0-116-generic
  Openstack Queens Release
  Nova 17.0.1-0ubuntu1

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