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[Matt Riedemann <mriedem.os@xxxxxxxxx>]

Public bug reported:

The CPU monitor stuff in nova-compute is essentially frozen / deprecated
and not enabled by default, but the compute service logs a warning on
every startup that it's not being used - which if you've configured the
service to not use it, great - who cares - we don't need a warning:

http://logstash.openstack.org/#dashboard/file/logstash.json?query=message%3A%5C%22Excluding%20nova.compute.monitors.cpu%20monitor%20virt_driver.%20Not%20in%20the%20list%20of%20enabled%20monitors%20(CONF.compute_monitors).%5C%22%20AND%20tags%3A%5C%22screen-n-cpu.txt%5C%22&from=7d

https://docs.openstack.org/nova/latest/configuration/config.html#DEFAULT.compute_monitors

The help in that config option is also misleading since it mentions
"numa_mem_bw" which does not exist in nova.

** Affects: nova
     Importance: Medium
     Assignee: Matt Riedemann (mriedem)
         Status: Triaged

** Affects: nova/pike
     Importance: Medium
         Status: Triaged

** Affects: nova/queens
     Importance: Medium
         Status: Triaged

** Affects: nova/rocky
     Importance: Medium
         Status: Triaged

** Affects: nova/stein
     Importance: Medium
         Status: Triaged


** Tags: compute logging serviceability

** Changed in: nova
     Assignee: (unassigned) => Matt Riedemann (mriedem)

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

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

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

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

** Changed in: nova/pike
       Status: New => Triaged

** Changed in: nova/queens
       Status: New => Triaged

** Changed in: nova/rocky
       Status: New => Triaged

** Changed in: nova/stein
       Status: New => Triaged

** Changed in: nova/pike
   Importance: Undecided => Medium

** Changed in: nova/queens
   Importance: Undecided => Medium

** Changed in: nova/rocky
   Importance: Undecided => Medium

** Changed in: nova/stein
   Importance: Undecided => Medium

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https://bugs.launchpad.net/bugs/1823207

Title:
  Annoying log on nova-compute startup with default configuration:
  "WARNING [nova.compute.monitors] Excluding nova.compute.monitors.cpu
  monitor virt_driver. Not in the list of enabled monitors
  (CONF.compute_monitors)."

Status in OpenStack Compute (nova):
  Triaged
Status in OpenStack Compute (nova) pike series:
  Triaged
Status in OpenStack Compute (nova) queens series:
  Triaged
Status in OpenStack Compute (nova) rocky series:
  Triaged
Status in OpenStack Compute (nova) stein series:
  Triaged

Bug description:
  The CPU monitor stuff in nova-compute is essentially frozen /
  deprecated and not enabled by default, but the compute service logs a
  warning on every startup that it's not being used - which if you've
  configured the service to not use it, great - who cares - we don't
  need a warning:

  http://logstash.openstack.org/#dashboard/file/logstash.json?query=message%3A%5C%22Excluding%20nova.compute.monitors.cpu%20monitor%20virt_driver.%20Not%20in%20the%20list%20of%20enabled%20monitors%20(CONF.compute_monitors).%5C%22%20AND%20tags%3A%5C%22screen-n-cpu.txt%5C%22&from=7d

  https://docs.openstack.org/nova/latest/configuration/config.html#DEFAULT.compute_monitors

  The help in that config option is also misleading since it mentions
  "numa_mem_bw" which does not exist in nova.

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