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[Bug 1600394] [NEW] ValueError: too many values to unpack

To: yahoo-eng-team@xxxxxxxxxxxxxxxxxxx
From: Eric Brown <browne@xxxxxxxxxx>
Date: Fri, 08 Jul 2016 23:14:21 -0000
Reply-to: Bug 1600394 <1600394@xxxxxxxxxxxxxxxxxx>
Sender: bounces@xxxxxxxxxxxxx
Public bug reported:

Found the following error in the keystone logs of our Mitaka deployment.

2016-07-06 05:14:30.311 18314 ERROR keystone.common.wsgi [req-b256411d-ba72-4076-b644-ef08a5400ab2 66725b90caea4963b1b4f91f90ab1dee ab149973d5b84459bd3ece44074ec2aa - default default] too many values to unpack
2016-07-06 05:14:30.311 18314 ERROR keystone.common.wsgi Traceback (most recent call last):
2016-07-06 05:14:30.311 18314 ERROR keystone.common.wsgi   File "/usr/lib/python2.7/dist-packages/keystone/common/wsgi.py", line 249, in __call__
2016-07-06 05:14:30.311 18314 ERROR keystone.common.wsgi     result = method(context, **params)
2016-07-06 05:14:30.311 18314 ERROR keystone.common.wsgi   File "/usr/lib/python2.7/dist-packages/keystone/common/controller.py", line 156, in inner
2016-07-06 05:14:30.311 18314 ERROR keystone.common.wsgi     context['subject_token_id']))
2016-07-06 05:14:30.311 18314 ERROR keystone.common.wsgi   File "/usr/lib/python2.7/dist-packages/keystone/common/manager.py", line 124, in wrapped
2016-07-06 05:14:30.311 18314 ERROR keystone.common.wsgi     __ret_val = __f(*args, **kwargs)
2016-07-06 05:14:30.311 18314 ERROR keystone.common.wsgi   File "/usr/lib/python2.7/dist-packages/keystone/token/provider.py", line 208, in validate_token
2016-07-06 05:14:30.311 18314 ERROR keystone.common.wsgi     token = self._validate_token(unique_id)
2016-07-06 05:14:30.311 18314 ERROR keystone.common.wsgi   File "/usr/lib/python2.7/dist-packages/dogpile/cache/region.py", line 1053, in decorate
2016-07-06 05:14:30.311 18314 ERROR keystone.common.wsgi     should_cache_fn)
2016-07-06 05:14:30.311 18314 ERROR keystone.common.wsgi   File "/usr/lib/python2.7/dist-packages/dogpile/cache/region.py", line 657, in get_or_create
2016-07-06 05:14:30.311 18314 ERROR keystone.common.wsgi     async_creator) as value:
2016-07-06 05:14:30.311 18314 ERROR keystone.common.wsgi   File "/usr/lib/python2.7/dist-packages/dogpile/core/dogpile.py", line 158, in __enter__
2016-07-06 05:14:30.311 18314 ERROR keystone.common.wsgi     return self._enter()
2016-07-06 05:14:30.311 18314 ERROR keystone.common.wsgi   File "/usr/lib/python2.7/dist-packages/dogpile/core/dogpile.py", line 98, in _enter
2016-07-06 05:14:30.311 18314 ERROR keystone.common.wsgi     generated = self._enter_create(createdtime)
2016-07-06 05:14:30.311 18314 ERROR keystone.common.wsgi   File "/usr/lib/python2.7/dist-packages/dogpile/core/dogpile.py", line 149, in _enter_create
2016-07-06 05:14:30.311 18314 ERROR keystone.common.wsgi     created = self.creator()
2016-07-06 05:14:30.311 18314 ERROR keystone.common.wsgi   File "/usr/lib/python2.7/dist-packages/dogpile/cache/region.py", line 625, in gen_value
2016-07-06 05:14:30.311 18314 ERROR keystone.common.wsgi     created_value = creator()
2016-07-06 05:14:30.311 18314 ERROR keystone.common.wsgi   File "/usr/lib/python2.7/dist-packages/dogpile/cache/region.py", line 1049, in creator
2016-07-06 05:14:30.311 18314 ERROR keystone.common.wsgi     return fn(*arg, **kw)
2016-07-06 05:14:30.311 18314 ERROR keystone.common.wsgi   File "/usr/lib/python2.7/dist-packages/keystone/token/provider.py", line 298, in _validate_token
2016-07-06 05:14:30.311 18314 ERROR keystone.common.wsgi     return self.driver.validate_non_persistent_token(token_id)
2016-07-06 05:14:30.311 18314 ERROR keystone.common.wsgi   File "/usr/lib/python2.7/dist-packages/keystone/token/providers/common.py", line 772, in validate_non_persistent_token
2016-07-06 05:14:30.311 18314 ERROR keystone.common.wsgi     audit_info=audit_ids)
2016-07-06 05:14:30.311 18314 ERROR keystone.common.wsgi   File "/usr/lib/python2.7/dist-packages/keystone/token/providers/common.py", line 526, in get_token_data
2016-07-06 05:14:30.311 18314 ERROR keystone.common.wsgi     project_id, trust)
2016-07-06 05:14:30.311 18314 ERROR keystone.common.wsgi   File "/usr/lib/python2.7/dist-packages/keystone/token/providers/common.py", line 469, in _populate_service_catalog
2016-07-06 05:14:30.311 18314 ERROR keystone.common.wsgi     user_id, project_id)
2016-07-06 05:14:30.311 18314 ERROR keystone.common.wsgi   File "/usr/lib/python2.7/dist-packages/keystone/common/manager.py", line 124, in wrapped
2016-07-06 05:14:30.311 18314 ERROR keystone.common.wsgi     __ret_val = __f(*args, **kwargs)
2016-07-06 05:14:30.311 18314 ERROR keystone.common.wsgi   File "/usr/lib/python2.7/dist-packages/dogpile/cache/region.py", line 1053, in decorate
2016-07-06 05:14:30.311 18314 ERROR keystone.common.wsgi     should_cache_fn)
2016-07-06 05:14:30.311 18314 ERROR keystone.common.wsgi   File "/usr/lib/python2.7/dist-packages/dogpile/cache/region.py", line 657, in get_or_create
2016-07-06 05:14:30.311 18314 ERROR keystone.common.wsgi     async_creator) as value:
2016-07-06 05:14:30.311 18314 ERROR keystone.common.wsgi   File "/usr/lib/python2.7/dist-packages/dogpile/core/dogpile.py", line 158, in __enter__
2016-07-06 05:14:30.311 18314 ERROR keystone.common.wsgi     return self._enter()
2016-07-06 05:14:30.311 18314 ERROR keystone.common.wsgi   File "/usr/lib/python2.7/dist-packages/dogpile/core/dogpile.py", line 91, in _enter
2016-07-06 05:14:30.311 18314 ERROR keystone.common.wsgi     value = value_fn()
2016-07-06 05:14:30.311 18314 ERROR keystone.common.wsgi   File "/usr/lib/python2.7/dist-packages/dogpile/cache/region.py", line 610, in get_value
2016-07-06 05:14:30.311 18314 ERROR keystone.common.wsgi     value = self.backend.get(key)
2016-07-06 05:14:30.311 18314 ERROR keystone.common.wsgi   File "/usr/lib/python2.7/dist-packages/keystone/common/cache/_context_cache.py", line 96, in get
2016-07-06 05:14:30.311 18314 ERROR keystone.common.wsgi     value = self.proxied.get(key)
2016-07-06 05:14:30.311 18314 ERROR keystone.common.wsgi   File "/usr/lib/python2.7/dist-packages/dogpile/cache/backends/memcached.py", line 161, in get
2016-07-06 05:14:30.311 18314 ERROR keystone.common.wsgi     value = self.client.get(key)
2016-07-06 05:14:30.311 18314 ERROR keystone.common.wsgi   File "/usr/lib/python2.7/dist-packages/oslo_cache/backends/memcache_pool.py", line 36, in _run_method
2016-07-06 05:14:30.311 18314 ERROR keystone.common.wsgi     return getattr(client, __name)(*args, **kwargs)
2016-07-06 05:14:30.311 18314 ERROR keystone.common.wsgi   File "/usr/lib/python2.7/dist-packages/memcache.py", line 1093, in get
2016-07-06 05:14:30.311 18314 ERROR keystone.common.wsgi     return self._get('get', key)
2016-07-06 05:14:30.311 18314 ERROR keystone.common.wsgi   File "/usr/lib/python2.7/dist-packages/memcache.py", line 1077, in _get
2016-07-06 05:14:30.311 18314 ERROR keystone.common.wsgi     return _unsafe_get()
2016-07-06 05:14:30.311 18314 ERROR keystone.common.wsgi   File "/usr/lib/python2.7/dist-packages/memcache.py", line 1059, in _unsafe_get
2016-07-06 05:14:30.311 18314 ERROR keystone.common.wsgi     server, raise_exception=True
2016-07-06 05:14:30.311 18314 ERROR keystone.common.wsgi   File "/usr/lib/python2.7/dist-packages/memcache.py", line 1211, in _expectvalue
2016-07-06 05:14:30.311 18314 ERROR keystone.common.wsgi     resp, rkey, flags, len = line.split()
2016-07-06 05:14:30.311 18314 ERROR keystone.common.wsgi ValueError: too many values to unpack
2016-07-06 05:14:30.311 18314 ERROR keystone.common.wsgi 
2016-07-06 05:14:30.321 18314 INFO eventlet.wsgi.server [req-b256411d-ba72-4076-b644-ef08a5400ab2 66725b90caea4963b1b4f91f90ab1dee ab149973d5b84459bd3ece44074ec2aa - default default] 10.111.109.87,10.111.109.89 - - [06/Jul/2016 05:14:30] "GET /v3/auth/tokens HTTP/1.1" 500 400 0.115269


And another...


2016-07-06 05:15:06.273 18314 DEBUG keystone.middleware.auth [req-de5f209c-27a5-4fdb-81af-34e01c2ca43a - - - - -] There is either no auth token in the request or the certificate issuer is not trusted. No auth context will be set. _build_auth_context /usr/lib/python2.7/dist-packages/keystone/middleware/auth.py:71
2016-07-06 05:15:06.276 18314 INFO keystone.common.wsgi [req-de5f209c-27a5-4fdb-81af-34e01c2ca43a - - - - -] POST http://10.111.109.81:35357/v2.0/tokens
2016-07-06 05:15:06.385 18314 ERROR keystone.common.wsgi [req-de5f209c-27a5-4fdb-81af-34e01c2ca43a - - - - -] too many values to unpack
2016-07-06 05:15:06.385 18314 ERROR keystone.common.wsgi Traceback (most recent call last):
2016-07-06 05:15:06.385 18314 ERROR keystone.common.wsgi   File "/usr/lib/python2.7/dist-packages/keystone/common/wsgi.py", line 249, in __call__
2016-07-06 05:15:06.385 18314 ERROR keystone.common.wsgi     result = method(context, **params)
2016-07-06 05:15:06.385 18314 ERROR keystone.common.wsgi   File "/usr/lib/python2.7/dist-packages/oslo_log/versionutils.py", line 165, in wrapped
2016-07-06 05:15:06.385 18314 ERROR keystone.common.wsgi     return func_or_cls(*args, **kwargs)
2016-07-06 05:15:06.385 18314 ERROR keystone.common.wsgi   File "/usr/lib/python2.7/dist-packages/keystone/token/controllers.py", line 130, in authenticate
2016-07-06 05:15:06.385 18314 ERROR keystone.common.wsgi     user_ref['id'], tenant_ref['id'])
2016-07-06 05:15:06.385 18314 ERROR keystone.common.wsgi   File "/usr/lib/python2.7/dist-packages/keystone/common/manager.py", line 124, in wrapped
2016-07-06 05:15:06.385 18314 ERROR keystone.common.wsgi     __ret_val = __f(*args, **kwargs)
2016-07-06 05:15:06.385 18314 ERROR keystone.common.wsgi   File "/usr/lib/python2.7/dist-packages/dogpile/cache/region.py", line 1053, in decorate
2016-07-06 05:15:06.385 18314 ERROR keystone.common.wsgi     should_cache_fn)
2016-07-06 05:15:06.385 18314 ERROR keystone.common.wsgi   File "/usr/lib/python2.7/dist-packages/dogpile/cache/region.py", line 657, in get_or_create
2016-07-06 05:15:06.385 18314 ERROR keystone.common.wsgi     async_creator) as value:
2016-07-06 05:15:06.385 18314 ERROR keystone.common.wsgi   File "/usr/lib/python2.7/dist-packages/dogpile/core/dogpile.py", line 158, in __enter__
2016-07-06 05:15:06.385 18314 ERROR keystone.common.wsgi     return self._enter()
2016-07-06 05:15:06.385 18314 ERROR keystone.common.wsgi   File "/usr/lib/python2.7/dist-packages/dogpile/core/dogpile.py", line 91, in _enter
2016-07-06 05:15:06.385 18314 ERROR keystone.common.wsgi     value = value_fn()
2016-07-06 05:15:06.385 18314 ERROR keystone.common.wsgi   File "/usr/lib/python2.7/dist-packages/dogpile/cache/region.py", line 610, in get_value
2016-07-06 05:15:06.385 18314 ERROR keystone.common.wsgi     value = self.backend.get(key)
2016-07-06 05:15:06.385 18314 ERROR keystone.common.wsgi   File "/usr/lib/python2.7/dist-packages/keystone/common/cache/_context_cache.py", line 96, in get
2016-07-06 05:15:06.385 18314 ERROR keystone.common.wsgi     value = self.proxied.get(key)
2016-07-06 05:15:06.385 18314 ERROR keystone.common.wsgi   File "/usr/lib/python2.7/dist-packages/dogpile/cache/backends/memcached.py", line 161, in get
2016-07-06 05:15:06.385 18314 ERROR keystone.common.wsgi     value = self.client.get(key)
2016-07-06 05:15:06.385 18314 ERROR keystone.common.wsgi   File "/usr/lib/python2.7/dist-packages/oslo_cache/backends/memcache_pool.py", line 36, in _run_method
2016-07-06 05:15:06.385 18314 ERROR keystone.common.wsgi     return getattr(client, __name)(*args, **kwargs)
2016-07-06 05:15:06.385 18314 ERROR keystone.common.wsgi   File "/usr/lib/python2.7/dist-packages/memcache.py", line 1093, in get
2016-07-06 05:15:06.385 18314 ERROR keystone.common.wsgi     return self._get('get', key)
2016-07-06 05:15:06.385 18314 ERROR keystone.common.wsgi   File "/usr/lib/python2.7/dist-packages/memcache.py", line 1077, in _get
2016-07-06 05:15:06.385 18314 ERROR keystone.common.wsgi     return _unsafe_get()
2016-07-06 05:15:06.385 18314 ERROR keystone.common.wsgi   File "/usr/lib/python2.7/dist-packages/memcache.py", line 1059, in _unsafe_get
2016-07-06 05:15:06.385 18314 ERROR keystone.common.wsgi     server, raise_exception=True
2016-07-06 05:15:06.385 18314 ERROR keystone.common.wsgi   File "/usr/lib/python2.7/dist-packages/memcache.py", line 1211, in _expectvalue
2016-07-06 05:15:06.385 18314 ERROR keystone.common.wsgi     resp, rkey, flags, len = line.split()
2016-07-06 05:15:06.385 18314 ERROR keystone.common.wsgi ValueError: too many values to unpack
2016-07-06 05:15:06.385 18314 ERROR keystone.common.wsgi 
2016-07-06 05:15:06.390 18314 INFO eventlet.wsgi.server [req-de5f209c-27a5-4fdb-81af-34e01c2ca43a - - - - -] 10.111.109.191,10.111.109.89 - - [06/Jul/2016 05:15:06] "POST /v2.0/tokens HTTP/1.1" 500 400 0.118120

** Affects: keystone
     Importance: Undecided
         Status: New

-- 
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https://bugs.launchpad.net/bugs/1600394

Title:
  ValueError: too many values to unpack

Status in OpenStack Identity (keystone):
  New

Bug description:
  Found the following error in the keystone logs of our Mitaka
  deployment.

  2016-07-06 05:14:30.311 18314 ERROR keystone.common.wsgi [req-b256411d-ba72-4076-b644-ef08a5400ab2 66725b90caea4963b1b4f91f90ab1dee ab149973d5b84459bd3ece44074ec2aa - default default] too many values to unpack
  2016-07-06 05:14:30.311 18314 ERROR keystone.common.wsgi Traceback (most recent call last):
  2016-07-06 05:14:30.311 18314 ERROR keystone.common.wsgi   File "/usr/lib/python2.7/dist-packages/keystone/common/wsgi.py", line 249, in __call__
  2016-07-06 05:14:30.311 18314 ERROR keystone.common.wsgi     result = method(context, **params)
  2016-07-06 05:14:30.311 18314 ERROR keystone.common.wsgi   File "/usr/lib/python2.7/dist-packages/keystone/common/controller.py", line 156, in inner
  2016-07-06 05:14:30.311 18314 ERROR keystone.common.wsgi     context['subject_token_id']))
  2016-07-06 05:14:30.311 18314 ERROR keystone.common.wsgi   File "/usr/lib/python2.7/dist-packages/keystone/common/manager.py", line 124, in wrapped
  2016-07-06 05:14:30.311 18314 ERROR keystone.common.wsgi     __ret_val = __f(*args, **kwargs)
  2016-07-06 05:14:30.311 18314 ERROR keystone.common.wsgi   File "/usr/lib/python2.7/dist-packages/keystone/token/provider.py", line 208, in validate_token
  2016-07-06 05:14:30.311 18314 ERROR keystone.common.wsgi     token = self._validate_token(unique_id)
  2016-07-06 05:14:30.311 18314 ERROR keystone.common.wsgi   File "/usr/lib/python2.7/dist-packages/dogpile/cache/region.py", line 1053, in decorate
  2016-07-06 05:14:30.311 18314 ERROR keystone.common.wsgi     should_cache_fn)
  2016-07-06 05:14:30.311 18314 ERROR keystone.common.wsgi   File "/usr/lib/python2.7/dist-packages/dogpile/cache/region.py", line 657, in get_or_create
  2016-07-06 05:14:30.311 18314 ERROR keystone.common.wsgi     async_creator) as value:
  2016-07-06 05:14:30.311 18314 ERROR keystone.common.wsgi   File "/usr/lib/python2.7/dist-packages/dogpile/core/dogpile.py", line 158, in __enter__
  2016-07-06 05:14:30.311 18314 ERROR keystone.common.wsgi     return self._enter()
  2016-07-06 05:14:30.311 18314 ERROR keystone.common.wsgi   File "/usr/lib/python2.7/dist-packages/dogpile/core/dogpile.py", line 98, in _enter
  2016-07-06 05:14:30.311 18314 ERROR keystone.common.wsgi     generated = self._enter_create(createdtime)
  2016-07-06 05:14:30.311 18314 ERROR keystone.common.wsgi   File "/usr/lib/python2.7/dist-packages/dogpile/core/dogpile.py", line 149, in _enter_create
  2016-07-06 05:14:30.311 18314 ERROR keystone.common.wsgi     created = self.creator()
  2016-07-06 05:14:30.311 18314 ERROR keystone.common.wsgi   File "/usr/lib/python2.7/dist-packages/dogpile/cache/region.py", line 625, in gen_value
  2016-07-06 05:14:30.311 18314 ERROR keystone.common.wsgi     created_value = creator()
  2016-07-06 05:14:30.311 18314 ERROR keystone.common.wsgi   File "/usr/lib/python2.7/dist-packages/dogpile/cache/region.py", line 1049, in creator
  2016-07-06 05:14:30.311 18314 ERROR keystone.common.wsgi     return fn(*arg, **kw)
  2016-07-06 05:14:30.311 18314 ERROR keystone.common.wsgi   File "/usr/lib/python2.7/dist-packages/keystone/token/provider.py", line 298, in _validate_token
  2016-07-06 05:14:30.311 18314 ERROR keystone.common.wsgi     return self.driver.validate_non_persistent_token(token_id)
  2016-07-06 05:14:30.311 18314 ERROR keystone.common.wsgi   File "/usr/lib/python2.7/dist-packages/keystone/token/providers/common.py", line 772, in validate_non_persistent_token
  2016-07-06 05:14:30.311 18314 ERROR keystone.common.wsgi     audit_info=audit_ids)
  2016-07-06 05:14:30.311 18314 ERROR keystone.common.wsgi   File "/usr/lib/python2.7/dist-packages/keystone/token/providers/common.py", line 526, in get_token_data
  2016-07-06 05:14:30.311 18314 ERROR keystone.common.wsgi     project_id, trust)
  2016-07-06 05:14:30.311 18314 ERROR keystone.common.wsgi   File "/usr/lib/python2.7/dist-packages/keystone/token/providers/common.py", line 469, in _populate_service_catalog
  2016-07-06 05:14:30.311 18314 ERROR keystone.common.wsgi     user_id, project_id)
  2016-07-06 05:14:30.311 18314 ERROR keystone.common.wsgi   File "/usr/lib/python2.7/dist-packages/keystone/common/manager.py", line 124, in wrapped
  2016-07-06 05:14:30.311 18314 ERROR keystone.common.wsgi     __ret_val = __f(*args, **kwargs)
  2016-07-06 05:14:30.311 18314 ERROR keystone.common.wsgi   File "/usr/lib/python2.7/dist-packages/dogpile/cache/region.py", line 1053, in decorate
  2016-07-06 05:14:30.311 18314 ERROR keystone.common.wsgi     should_cache_fn)
  2016-07-06 05:14:30.311 18314 ERROR keystone.common.wsgi   File "/usr/lib/python2.7/dist-packages/dogpile/cache/region.py", line 657, in get_or_create
  2016-07-06 05:14:30.311 18314 ERROR keystone.common.wsgi     async_creator) as value:
  2016-07-06 05:14:30.311 18314 ERROR keystone.common.wsgi   File "/usr/lib/python2.7/dist-packages/dogpile/core/dogpile.py", line 158, in __enter__
  2016-07-06 05:14:30.311 18314 ERROR keystone.common.wsgi     return self._enter()
  2016-07-06 05:14:30.311 18314 ERROR keystone.common.wsgi   File "/usr/lib/python2.7/dist-packages/dogpile/core/dogpile.py", line 91, in _enter
  2016-07-06 05:14:30.311 18314 ERROR keystone.common.wsgi     value = value_fn()
  2016-07-06 05:14:30.311 18314 ERROR keystone.common.wsgi   File "/usr/lib/python2.7/dist-packages/dogpile/cache/region.py", line 610, in get_value
  2016-07-06 05:14:30.311 18314 ERROR keystone.common.wsgi     value = self.backend.get(key)
  2016-07-06 05:14:30.311 18314 ERROR keystone.common.wsgi   File "/usr/lib/python2.7/dist-packages/keystone/common/cache/_context_cache.py", line 96, in get
  2016-07-06 05:14:30.311 18314 ERROR keystone.common.wsgi     value = self.proxied.get(key)
  2016-07-06 05:14:30.311 18314 ERROR keystone.common.wsgi   File "/usr/lib/python2.7/dist-packages/dogpile/cache/backends/memcached.py", line 161, in get
  2016-07-06 05:14:30.311 18314 ERROR keystone.common.wsgi     value = self.client.get(key)
  2016-07-06 05:14:30.311 18314 ERROR keystone.common.wsgi   File "/usr/lib/python2.7/dist-packages/oslo_cache/backends/memcache_pool.py", line 36, in _run_method
  2016-07-06 05:14:30.311 18314 ERROR keystone.common.wsgi     return getattr(client, __name)(*args, **kwargs)
  2016-07-06 05:14:30.311 18314 ERROR keystone.common.wsgi   File "/usr/lib/python2.7/dist-packages/memcache.py", line 1093, in get
  2016-07-06 05:14:30.311 18314 ERROR keystone.common.wsgi     return self._get('get', key)
  2016-07-06 05:14:30.311 18314 ERROR keystone.common.wsgi   File "/usr/lib/python2.7/dist-packages/memcache.py", line 1077, in _get
  2016-07-06 05:14:30.311 18314 ERROR keystone.common.wsgi     return _unsafe_get()
  2016-07-06 05:14:30.311 18314 ERROR keystone.common.wsgi   File "/usr/lib/python2.7/dist-packages/memcache.py", line 1059, in _unsafe_get
  2016-07-06 05:14:30.311 18314 ERROR keystone.common.wsgi     server, raise_exception=True
  2016-07-06 05:14:30.311 18314 ERROR keystone.common.wsgi   File "/usr/lib/python2.7/dist-packages/memcache.py", line 1211, in _expectvalue
  2016-07-06 05:14:30.311 18314 ERROR keystone.common.wsgi     resp, rkey, flags, len = line.split()
  2016-07-06 05:14:30.311 18314 ERROR keystone.common.wsgi ValueError: too many values to unpack
  2016-07-06 05:14:30.311 18314 ERROR keystone.common.wsgi 
  2016-07-06 05:14:30.321 18314 INFO eventlet.wsgi.server [req-b256411d-ba72-4076-b644-ef08a5400ab2 66725b90caea4963b1b4f91f90ab1dee ab149973d5b84459bd3ece44074ec2aa - default default] 10.111.109.87,10.111.109.89 - - [06/Jul/2016 05:14:30] "GET /v3/auth/tokens HTTP/1.1" 500 400 0.115269

  
  And another...

  
  2016-07-06 05:15:06.273 18314 DEBUG keystone.middleware.auth [req-de5f209c-27a5-4fdb-81af-34e01c2ca43a - - - - -] There is either no auth token in the request or the certificate issuer is not trusted. No auth context will be set. _build_auth_context /usr/lib/python2.7/dist-packages/keystone/middleware/auth.py:71
  2016-07-06 05:15:06.276 18314 INFO keystone.common.wsgi [req-de5f209c-27a5-4fdb-81af-34e01c2ca43a - - - - -] POST http://10.111.109.81:35357/v2.0/tokens
  2016-07-06 05:15:06.385 18314 ERROR keystone.common.wsgi [req-de5f209c-27a5-4fdb-81af-34e01c2ca43a - - - - -] too many values to unpack
  2016-07-06 05:15:06.385 18314 ERROR keystone.common.wsgi Traceback (most recent call last):
  2016-07-06 05:15:06.385 18314 ERROR keystone.common.wsgi   File "/usr/lib/python2.7/dist-packages/keystone/common/wsgi.py", line 249, in __call__
  2016-07-06 05:15:06.385 18314 ERROR keystone.common.wsgi     result = method(context, **params)
  2016-07-06 05:15:06.385 18314 ERROR keystone.common.wsgi   File "/usr/lib/python2.7/dist-packages/oslo_log/versionutils.py", line 165, in wrapped
  2016-07-06 05:15:06.385 18314 ERROR keystone.common.wsgi     return func_or_cls(*args, **kwargs)
  2016-07-06 05:15:06.385 18314 ERROR keystone.common.wsgi   File "/usr/lib/python2.7/dist-packages/keystone/token/controllers.py", line 130, in authenticate
  2016-07-06 05:15:06.385 18314 ERROR keystone.common.wsgi     user_ref['id'], tenant_ref['id'])
  2016-07-06 05:15:06.385 18314 ERROR keystone.common.wsgi   File "/usr/lib/python2.7/dist-packages/keystone/common/manager.py", line 124, in wrapped
  2016-07-06 05:15:06.385 18314 ERROR keystone.common.wsgi     __ret_val = __f(*args, **kwargs)
  2016-07-06 05:15:06.385 18314 ERROR keystone.common.wsgi   File "/usr/lib/python2.7/dist-packages/dogpile/cache/region.py", line 1053, in decorate
  2016-07-06 05:15:06.385 18314 ERROR keystone.common.wsgi     should_cache_fn)
  2016-07-06 05:15:06.385 18314 ERROR keystone.common.wsgi   File "/usr/lib/python2.7/dist-packages/dogpile/cache/region.py", line 657, in get_or_create
  2016-07-06 05:15:06.385 18314 ERROR keystone.common.wsgi     async_creator) as value:
  2016-07-06 05:15:06.385 18314 ERROR keystone.common.wsgi   File "/usr/lib/python2.7/dist-packages/dogpile/core/dogpile.py", line 158, in __enter__
  2016-07-06 05:15:06.385 18314 ERROR keystone.common.wsgi     return self._enter()
  2016-07-06 05:15:06.385 18314 ERROR keystone.common.wsgi   File "/usr/lib/python2.7/dist-packages/dogpile/core/dogpile.py", line 91, in _enter
  2016-07-06 05:15:06.385 18314 ERROR keystone.common.wsgi     value = value_fn()
  2016-07-06 05:15:06.385 18314 ERROR keystone.common.wsgi   File "/usr/lib/python2.7/dist-packages/dogpile/cache/region.py", line 610, in get_value
  2016-07-06 05:15:06.385 18314 ERROR keystone.common.wsgi     value = self.backend.get(key)
  2016-07-06 05:15:06.385 18314 ERROR keystone.common.wsgi   File "/usr/lib/python2.7/dist-packages/keystone/common/cache/_context_cache.py", line 96, in get
  2016-07-06 05:15:06.385 18314 ERROR keystone.common.wsgi     value = self.proxied.get(key)
  2016-07-06 05:15:06.385 18314 ERROR keystone.common.wsgi   File "/usr/lib/python2.7/dist-packages/dogpile/cache/backends/memcached.py", line 161, in get
  2016-07-06 05:15:06.385 18314 ERROR keystone.common.wsgi     value = self.client.get(key)
  2016-07-06 05:15:06.385 18314 ERROR keystone.common.wsgi   File "/usr/lib/python2.7/dist-packages/oslo_cache/backends/memcache_pool.py", line 36, in _run_method
  2016-07-06 05:15:06.385 18314 ERROR keystone.common.wsgi     return getattr(client, __name)(*args, **kwargs)
  2016-07-06 05:15:06.385 18314 ERROR keystone.common.wsgi   File "/usr/lib/python2.7/dist-packages/memcache.py", line 1093, in get
  2016-07-06 05:15:06.385 18314 ERROR keystone.common.wsgi     return self._get('get', key)
  2016-07-06 05:15:06.385 18314 ERROR keystone.common.wsgi   File "/usr/lib/python2.7/dist-packages/memcache.py", line 1077, in _get
  2016-07-06 05:15:06.385 18314 ERROR keystone.common.wsgi     return _unsafe_get()
  2016-07-06 05:15:06.385 18314 ERROR keystone.common.wsgi   File "/usr/lib/python2.7/dist-packages/memcache.py", line 1059, in _unsafe_get
  2016-07-06 05:15:06.385 18314 ERROR keystone.common.wsgi     server, raise_exception=True
  2016-07-06 05:15:06.385 18314 ERROR keystone.common.wsgi   File "/usr/lib/python2.7/dist-packages/memcache.py", line 1211, in _expectvalue
  2016-07-06 05:15:06.385 18314 ERROR keystone.common.wsgi     resp, rkey, flags, len = line.split()
  2016-07-06 05:15:06.385 18314 ERROR keystone.common.wsgi ValueError: too many values to unpack
  2016-07-06 05:15:06.385 18314 ERROR keystone.common.wsgi 
  2016-07-06 05:15:06.390 18314 INFO eventlet.wsgi.server [req-de5f209c-27a5-4fdb-81af-34e01c2ca43a - - - - -] 10.111.109.191,10.111.109.89 - - [06/Jul/2016 05:15:06] "POST /v2.0/tokens HTTP/1.1" 500 400 0.118120

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Follow ups

[Bug 1600394] Re: memcache raising "too many values to unpack"
From: Steve Martinelli, 2016-09-19