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[Corey Bryant <corey.bryant@xxxxxxxxxxxxx>]

** Also affects: cloud-archive/liberty
   Importance: Undecided
       Status: New

** Also affects: keystone (Ubuntu Xenial)
   Importance: Undecided
       Status: New

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https://bugs.launchpad.net/bugs/1612423

Title:
  Suggest  python-ldap/python-ldappool packages

Status in Ubuntu Cloud Archive:
  New
Status in Ubuntu Cloud Archive liberty series:
  New
Status in keystone package in Ubuntu:
  Confirmed
Status in keystone source package in Xenial:
  New

Bug description:
  [Description]

  Some customers require to configure LDAP or AD as the authentication backend
  for Keystone. 

  Since Juno, the LDAP auth backend of keystone requires the ldappool module to exists
  on the system.

  https://github.com/openstack/keystone/blob/d07f59ff38e3993d288b71d55436e507366cf98c/keystone/identity/backends/ldap/common.py#L25

  If the system doesn't have this package installed or gets removed by any of its
  reverse dependencies or auto remove, the following exception is raised by keystone:

  2016-08-07 06:47:24.486089 Traceback (most recent call last): 
  2016-08-07 06:47:24.486107 File "/var/www/cgi-bin/keystone/admin", line 25, in <module> 
  2016-08-07 06:47:24.486164 application = wsgi_server.initialize_application(name) 
  2016-08-07 06:47:24.486176 File "/usr/lib/python2.7/dist-packages/keystone/server/wsgi.py", line 64, in initialize_application 
  2016-08-07 06:47:24.486223 startup_application_fn=loadapp) 
  2016-08-07 06:47:24.486234 File "/usr/lib/python2.7/dist-packages/keystone/server/common.py", line 49, in setup_backends 
  2016-08-07 06:47:24.486275 drivers = backends.load_backends() 
  2016-08-07 06:47:24.486285 File "/usr/lib/python2.7/dist-packages/keystone/server/backends.py", line 39, in load_backends 
  2016-08-07 06:47:24.486327 _IDENTITY_API = identity.Manager() 
  2016-08-07 06:47:24.486338 File "/usr/lib/python2.7/dist-packages/keystone/notifications.py", line 333, in __new_init__ 
  2016-08-07 06:47:24.486501 init(self, *args, **kwargs) 
  2016-08-07 06:47:24.486515 File "/usr/lib/python2.7/dist-packages/keystone/common/dependency.py", line 95, in __wrapped_init__ 
  2016-08-07 06:47:24.486594 init(self, *args, **kwargs) 
  2016-08-07 06:47:24.486606 File "/usr/lib/python2.7/dist-packages/keystone/common/dependency.py", line 154, in wrapper 
  2016-08-07 06:47:24.486622 self.__wrapped_init__(*args, **kwargs) 
  2016-08-07 06:47:24.486630 File "/usr/lib/python2.7/dist-packages/keystone/identity/core.py", line 507, in __init__ 
  2016-08-07 06:47:24.486884 super(Manager, self).__init__(CONF.identity.driver) 
  2016-08-07 06:47:24.486899 File "/usr/lib/python2.7/dist-packages/keystone/common/manager.py", line 103, in __init__ 
  2016-08-07 06:47:24.486957 self.driver = load_driver(self.driver_namespace, driver_name) 
  2016-08-07 06:47:24.486968 File "/usr/lib/python2.7/dist-packages/keystone/common/manager.py", line 69, in load_driver 
  2016-08-07 06:47:24.486982 invoke_args=args) 
  2016-08-07 06:47:24.486993 File "/usr/lib/python2.7/dist-packages/stevedore/driver.py", line 45, in __init__ 
  2016-08-07 06:47:24.487053 verify_requirements=verify_requirements, 
  2016-08-07 06:47:24.487064 File "/usr/lib/python2.7/dist-packages/stevedore/named.py", line 55, in __init__ 
  2016-08-07 06:47:24.487119 verify_requirements) 
  2016-08-07 06:47:24.487132 File "/usr/lib/python2.7/dist-packages/stevedore/extension.py", line 170, in _load_plugins 
  2016-08-07 06:47:24.487265 self._on_load_failure_callback(self, ep, err) 
  2016-08-07 06:47:24.487278 File "/usr/lib/python2.7/dist-packages/stevedore/extension.py", line 162, in _load_plugins 
  2016-08-07 06:47:24.487295 verify_requirements, 
  2016-08-07 06:47:24.487304 File "/usr/lib/python2.7/dist-packages/stevedore/named.py", line 123, in _load_one_plugin 
  2016-08-07 06:47:24.487330 verify_requirements, 
  2016-08-07 06:47:24.487340 File "/usr/lib/python2.7/dist-packages/stevedore/extension.py", line 183, in _load_one_plugin 
  2016-08-07 06:47:24.487352 plugin = ep.resolve() 
  2016-08-07 06:47:24.487360 File "/usr/lib/python2.7/dist-packages/pkg_resources/__init__.py", line 2361, in resolve 
  2016-08-07 06:47:24.487815 module = __import__(self.module_name, fromlist=['__name__'], level=0) 
  2016-08-07 06:47:24.487841 File "/usr/lib/python2.7/dist-packages/keystone/identity/backends/ldap.py", line 24, in <module> 
  2016-08-07 06:47:24.487947 from keystone.common import ldap as common_ldap 
  2016-08-07 06:47:24.487959 File "/usr/lib/python2.7/dist-packages/keystone/common/ldap/__init__.py", line 15, in <module> 
  2016-08-07 06:47:24.487994 from keystone.common.ldap.core import * # noqa 
  2016-08-07 06:47:24.488005 File "/usr/lib/python2.7/dist-packages/keystone/common/ldap/core.py", line 24, in <module> 
  2016-08-07 06:47:24.488319 import ldappool 
  2016-08-07 06:47:24.488353 ImportError: No module named ldappool

  [Suggested Solution]

  Add the python-ldap and python-ldappool packages as Suggested packages
  for keystone.

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