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[Matt Riedemann <mriedem.os@xxxxxxxxx>]

Public bug reported:

There are two issues with this log message from the resource tracker:

Sep 26 18:44:37 devstack nova-compute[30351]: DEBUG
nova.compute.resource_tracker [None req-992d494e-d328-4204-bcfe-
80d926cf0a65 demo demo] We're on a Pike compute host in a deployment
with all Pike compute hosts. Skipping auto-correction of allocations.
{{(pid=30351) _update_usage_from_instance
/opt/stack/nova/nova/compute/resource_tracker.py:1071}}

1. If you're in Queens, you don't have Pike compute hosts. So the
message is misleading.

2. The message gets logged once per instance on a given compute host
every minute when the update_instance_allocation periodic task runs.

We should fix the message in #1 to say something else than Pike
specifically, and fix #2 to only log that once per periodic, rather than
once per instance per periodic.

** Affects: nova
     Importance: Medium
         Status: Confirmed


** Tags: compute low-hanging-fruit

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https://bugs.launchpad.net/bugs/1719714

Title:
  Excessive logging of "We're on a Pike compute host in a deployment
  with all Pike compute hosts."

Status in OpenStack Compute (nova):
  Confirmed

Bug description:
  There are two issues with this log message from the resource tracker:

  Sep 26 18:44:37 devstack nova-compute[30351]: DEBUG
  nova.compute.resource_tracker [None req-992d494e-d328-4204-bcfe-
  80d926cf0a65 demo demo] We're on a Pike compute host in a deployment
  with all Pike compute hosts. Skipping auto-correction of allocations.
  {{(pid=30351) _update_usage_from_instance
  /opt/stack/nova/nova/compute/resource_tracker.py:1071}}

  1. If you're in Queens, you don't have Pike compute hosts. So the
  message is misleading.

  2. The message gets logged once per instance on a given compute host
  every minute when the update_instance_allocation periodic task runs.

  We should fix the message in #1 to say something else than Pike
  specifically, and fix #2 to only log that once per periodic, rather
  than once per instance per periodic.

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