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[Russell Bryant <1182678@xxxxxxxxxxxxxxxxxx>]

** Changed in: python-novaclient
       Status: Fix Committed => Fix Released

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https://bugs.launchpad.net/bugs/1182678

Title:
  Horizon repeating log messages when DEBUG=True

Status in OpenStack Dashboard (Horizon):
  Fix Released
Status in Python client library for Cinder:
  Fix Committed
Status in Python client library for Keystone:
  Fix Released
Status in Python client library for Nova:
  Fix Released

Bug description:
  When setting DEBUG=True (i.e., in devstack and other development
  environments) we noticed that all the python-*client API calls would
  get logged multiple times.  On high-traffic dev instances, it would be
  dozens of repeats for each log message.  This made development work on
  these instances an experience somewhere on the scale between "hey,
  this is annoying" and "it's impossible to tell what's going on through
  all this noise"

  Testing revealed that the problem seems to stem from different
  mod_wsgi processes/threads vivifying their own API client objects.
  The clients seem to blindly shove logging handlers into the list
  without looking to see if it's necessary to do so first, and this
  causes Horizon to have dozens of identical handlers for each log
  message, and it then does what you'd expect.

  This isn't a problem with Horizon per se, but Horizon is affected by
  it.  So far, we've observed the problem with novaclient, cinderclient
  and keystoneclient, but all the client libraries likely behave in the
  same fashion.

  We also discovered in testing that there is no logging handler defined
  for cinderclient in the local_settings.py, so it uses the default
  hander.

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