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[Mohammed Naser <1794811@xxxxxxxxxxxxxxxxxx>]

Public bug reported:

If the placement service gets allocation candidates, it goes through all
the filters and if it ends up with 0 compute nodes, it logs it in INFO:

https://github.com/openstack/nova/blob/c6218428e9b29a2c52808ec7d27b4b21aadc0299/nova/filters.py#L130

However, if no allocation candidates match, it throw a message in DEBUG
and exits out, leaving important information for the operator.

https://github.com/openstack/nova/blob/c3fe54a74d8a3b5d5338a902e3562733a2b9a564/nova/scheduler/manager.py#L150-L153

** Affects: nova
     Importance: Undecided
     Assignee: Mohammed Naser (mnaser)
         Status: In Progress

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https://bugs.launchpad.net/bugs/1794811

Title:
  Lack of allocation candidates is only logged in DEBUG

Status in OpenStack Compute (nova):
  In Progress

Bug description:
  If the placement service gets allocation candidates, it goes through
  all the filters and if it ends up with 0 compute nodes, it logs it in
  INFO:

  https://github.com/openstack/nova/blob/c6218428e9b29a2c52808ec7d27b4b21aadc0299/nova/filters.py#L130

  However, if no allocation candidates match, it throw a message in
  DEBUG and exits out, leaving important information for the operator.

  https://github.com/openstack/nova/blob/c3fe54a74d8a3b5d5338a902e3562733a2b9a564/nova/scheduler/manager.py#L150-L153

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