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[Lance Bragstad <lbragstad@xxxxxxxxx>]

This looks like a keystone bug versus a python-keystoneclient bug.

** Also affects: keystone
   Importance: Undecided
       Status: New

** No longer affects: python-keystoneclient

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https://bugs.launchpad.net/bugs/1421300

Title:
  Keystone CRITICAL : Empty Module Name (driver)

Status in OpenStack Identity (Keystone):
  New

Bug description:
  Hi,

  I started to install Openstack Juno today.
  The documentation is for Ubuntu 14.04 (on ubuntu server), and the date of my documentation file is 12/02/15. 

  When I try to start Keystone, it stops immediately with the following
  error in '/var/log/keystone/keystone-all.log' :

  
  CRITICAL keystone [-] ValueError: Empty module name
  2015-02-12 17:10:43.026 16609 TRACE keystone Traceback (most recent call last):
  2015-02-12 17:10:43.026 16609 TRACE keystone   File "/usr/bin/keystone-all", line 147, in <module>
  2015-02-12 17:10:43.026 16609 TRACE keystone     backends.load_backends()
  2015-02-12 17:10:43.026 16609 TRACE keystone   File "/usr/lib/python2.7/dist-packages/keystone/backends.py", line 47, in load_backends
  2015-02-12 17:10:43.026 16609 TRACE keystone     trust_api=trust.Manager(),
  2015-02-12 17:10:43.026 16609 TRACE keystone   File "/usr/lib/python2.7/dist-packages/keystone/common/dependency.py", line 110, in __wrapped_init__
  2015-02-12 17:10:43.026 16609 TRACE keystone     init(self, *args, **kwargs)
  2015-02-12 17:10:43.026 16609 TRACE keystone   File "/usr/lib/python2.7/dist-packages/keystone/trust/core.py", line 46, in __init__
  2015-02-12 17:10:43.026 16609 TRACE keystone     super(Manager, self).__init__(CONF.trust.driver)
  2015-02-12 17:10:43.026 16609 TRACE keystone   File "/usr/lib/python2.7/dist-packages/keystone/common/manager.py", line 70, in __init__
  2015-02-12 17:10:43.026 16609 TRACE keystone     self.driver = importutils.import_object(driver_name)
  2015-02-12 17:10:43.026 16609 TRACE keystone   File "/usr/lib/python2.7/dist-packages/keystone/openstack/common/importutils.py", line 38, in import_object
  2015-02-12 17:10:43.026 16609 TRACE keystone     return import_class(import_str)(*args, **kwargs)
  2015-02-12 17:10:43.026 16609 TRACE keystone   File "/usr/lib/python2.7/dist-packages/keystone/openstack/common/importutils.py", line 27, in import_class
  2015-02-12 17:10:43.026 16609 TRACE keystone     __import__(mod_str)
  2015-02-12 17:10:43.026 16609 TRACE keystone ValueError: Empty module name

  
  I don't know where I can search for this bug. 
  I have the latest version of the keystone and python-keystoneclient client.

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