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[Bug 1639362] [NEW] Unexpected API Error: oslo_config.cfg.ConfigFileValueError

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Public bug reported:

OpenStack version: Newton

$ dpkg -l | grep nova
ii  nova-api                           2:14.0.1-0ubuntu1~cloud0              all          OpenStack Compute - API frontend
ii  nova-common                        2:14.0.1-0ubuntu1~cloud0              all          OpenStack Compute - common files
ii  nova-conductor                     2:14.0.1-0ubuntu1~cloud0              all          OpenStack Compute - conductor service
ii  nova-consoleauth                   2:14.0.1-0ubuntu1~cloud0              all          OpenStack Compute - Console Authenticator
ii  nova-novncproxy                    2:14.0.1-0ubuntu1~cloud0              all          OpenStack Compute - NoVNC proxy
ii  nova-scheduler                     2:14.0.1-0ubuntu1~cloud0              all          OpenStack Compute - virtual machine scheduler
ii  python-nova                        2:14.0.1-0ubuntu1~cloud0              all          OpenStack Compute Python libraries
ii  python-novaclient                  2:6.0.0-0ubuntu1~cloud0               all          client library for OpenStack Compute API - Python 2.7


When issuing:
openstack server create --flavor m1.nano --image cirros   --nic net-id=84afca3b-da51-45a5-aaa1-f49d7302da48 --security-group default   --key-name mykey provider-instance

I get following error:
Unexpected API Error. Please report this at http://bugs.launchpad.net/nova/ and attach the Nova API log if possible.
<class 'oslo_config.cfg.ConfigFileValueError'> (HTTP 500) (Request-ID: req-c4d4fb05-26d1-4ea7-8261-79553c7bf000)

here is the Nova API log:
2016-11-04 22:44:09.094 22682 ERROR sqlalchemy.pool.QueuePool   File "/usr/lib/python2.7/dist-packages/eventlet/hubs/hub.py", line 294, in switch
2016-11-04 22:44:09.094 22682 ERROR sqlalchemy.pool.QueuePool     return self.greenlet.switch()
2016-11-04 22:44:09.094 22682 ERROR sqlalchemy.pool.QueuePool GreenletExit
2016-11-04 22:44:09.094 22682 ERROR sqlalchemy.pool.QueuePool
2016-11-04 22:44:09.145 22683 INFO oslo_service.service [-] Parent process has died unexpectedly, exiting
2016-11-04 22:44:09.146 22683 INFO nova.wsgi [-] Stopping WSGI server.
2016-11-04 22:44:09.147 22683 INFO nova.wsgi [-] Stopping WSGI server.
2016-11-04 22:44:09.159 22687 INFO oslo_service.service [-] Parent process has died unexpectedly, exiting
2016-11-04 22:44:09.160 22687 INFO nova.wsgi [-] Stopping WSGI server.
2016-11-04 22:44:09.161 22687 INFO nova.wsgi [-] Stopping WSGI server.
2016-11-04 22:44:09.161 22687 ERROR sqlalchemy.pool.QueuePool [req-00fcf45d-96b5-424b-ad93-52aa38e6000d - - - - -] Exception during reset or similar
2016-11-04 22:44:09.161 22687 ERROR sqlalchemy.pool.QueuePool Traceback (most recent call last):
2016-11-04 22:44:09.161 22687 ERROR sqlalchemy.pool.QueuePool   File "/usr/lib/python2.7/dist-packages/sqlalchemy/pool.py", line 636, in _finalize_fairy
2016-11-04 22:44:09.161 22687 ERROR sqlalchemy.pool.QueuePool     fairy._reset(pool)
2016-11-04 22:44:09.161 22687 ERROR sqlalchemy.pool.QueuePool   File "/usr/lib/python2.7/dist-packages/sqlalchemy/pool.py", line 774, in _reset
2016-11-04 22:44:09.161 22687 ERROR sqlalchemy.pool.QueuePool     self._reset_agent.rollback()
2016-11-04 22:44:09.161 22687 ERROR sqlalchemy.pool.QueuePool   File "/usr/lib/python2.7/dist-packages/sqlalchemy/engine/base.py", line 1563, in rollback
2016-11-04 22:44:09.161 22687 ERROR sqlalchemy.pool.QueuePool     self._do_rollback()
2016-11-04 22:44:09.161 22687 ERROR sqlalchemy.pool.QueuePool   File "/usr/lib/python2.7/dist-packages/sqlalchemy/engine/base.py", line 1601, in _do_rollback
2016-11-04 22:44:09.161 22687 ERROR sqlalchemy.pool.QueuePool     self.connection._rollback_impl()
2016-11-04 22:44:09.161 22687 ERROR sqlalchemy.pool.QueuePool   File "/usr/lib/python2.7/dist-packages/sqlalchemy/engine/base.py", line 670, in _rollback_impl
2016-11-04 22:44:09.161 22687 ERROR sqlalchemy.pool.QueuePool     self._handle_dbapi_exception(e, None, None, None, None)
2016-11-04 22:44:09.161 22687 ERROR sqlalchemy.pool.QueuePool   File "/usr/lib/python2.7/dist-packages/sqlalchemy/engine/base.py", line 1353, in _handle_dbapi_exception
2016-11-04 22:44:09.161 22687 ERROR sqlalchemy.pool.QueuePool     self.engine.pool._invalidate(dbapi_conn_wrapper, e)
2016-11-04 22:44:09.161 22687 ERROR sqlalchemy.pool.QueuePool   File "/usr/lib/python2.7/dist-packages/sqlalchemy/pool.py", line 340, in _invalidate
2016-11-04 22:44:09.161 22687 ERROR sqlalchemy.pool.QueuePool     connection.invalidate(exception)
2016-11-04 22:44:09.161 22687 ERROR sqlalchemy.pool.QueuePool   File "/usr/lib/python2.7/dist-packages/sqlalchemy/pool.py", line 843, in invalidate
2016-11-04 22:44:09.161 22687 ERROR sqlalchemy.pool.QueuePool     self._checkin()
2016-11-04 22:44:09.161 22687 ERROR sqlalchemy.pool.QueuePool   File "/usr/lib/python2.7/dist-packages/sqlalchemy/pool.py", line 758, in _checkin
2016-11-04 22:44:09.161 22687 ERROR sqlalchemy.pool.QueuePool     self._pool, None, self._echo, fairy=self)
2016-11-04 22:44:09.161 22687 ERROR sqlalchemy.pool.QueuePool   File "/usr/lib/python2.7/dist-packages/sqlalchemy/pool.py", line 650, in _finalize_fairy
2016-11-04 22:44:09.161 22687 ERROR sqlalchemy.pool.QueuePool     connection_record.checkin()
2016-11-04 22:44:09.161 22687 ERROR sqlalchemy.pool.QueuePool   File "/usr/lib/python2.7/dist-packages/sqlalchemy/pool.py", line 509, in checkin
2016-11-04 22:44:09.161 22687 ERROR sqlalchemy.pool.QueuePool     pool.dispatch.checkin(connection, self)
2016-11-04 22:44:09.161 22687 ERROR sqlalchemy.pool.QueuePool   File "/usr/lib/python2.7/dist-packages/sqlalchemy/event/attr.py", line 256, in __call__
2016-11-04 22:44:09.161 22687 ERROR sqlalchemy.pool.QueuePool     fn(*args, **kw)
2016-11-04 22:44:09.161 22687 ERROR sqlalchemy.pool.QueuePool   File "/usr/lib/python2.7/dist-packages/oslo_db/sqlalchemy/engines.py", line 50, in _thread_yield
2016-11-04 22:44:09.161 22687 ERROR sqlalchemy.pool.QueuePool     time.sleep(0)
2016-11-04 22:44:09.161 22687 ERROR sqlalchemy.pool.QueuePool   File "/usr/lib/python2.7/dist-packages/eventlet/greenthread.py", line 34, in sleep
2016-11-04 22:44:09.161 22687 ERROR sqlalchemy.pool.QueuePool     hub.switch()
2016-11-04 22:44:09.161 22687 ERROR sqlalchemy.pool.QueuePool   File "/usr/lib/python2.7/dist-packages/eventlet/hubs/hub.py", line 294, in switch
2016-11-04 22:44:09.161 22687 ERROR sqlalchemy.pool.QueuePool     return self.greenlet.switch()
2016-11-04 22:44:09.161 22687 ERROR sqlalchemy.pool.QueuePool GreenletExit
2016-11-04 22:44:09.161 22687 ERROR sqlalchemy.pool.QueuePool

** Affects: nova
     Importance: Undecided
         Status: New

** Description changed:

+ OpenStack version: Newton
+ 
+ $ dpkg -l | grep nova
+ ii  nova-api                           2:14.0.1-0ubuntu1~cloud0              all          OpenStack Compute - API frontend
+ ii  nova-common                        2:14.0.1-0ubuntu1~cloud0              all          OpenStack Compute - common files
+ ii  nova-conductor                     2:14.0.1-0ubuntu1~cloud0              all          OpenStack Compute - conductor service
+ ii  nova-consoleauth                   2:14.0.1-0ubuntu1~cloud0              all          OpenStack Compute - Console Authenticator
+ ii  nova-novncproxy                    2:14.0.1-0ubuntu1~cloud0              all          OpenStack Compute - NoVNC proxy
+ ii  nova-scheduler                     2:14.0.1-0ubuntu1~cloud0              all          OpenStack Compute - virtual machine scheduler
+ ii  python-nova                        2:14.0.1-0ubuntu1~cloud0              all          OpenStack Compute Python libraries
+ ii  python-novaclient                  2:6.0.0-0ubuntu1~cloud0               all          client library for OpenStack Compute API - Python 2.7
+ 
+ 
  When issuing:
  openstack server create --flavor m1.nano --image cirros   --nic net-id=84afca3b-da51-45a5-aaa1-f49d7302da48 --security-group default   --key-name mykey provider-instance
  
  I get following error:
  Unexpected API Error. Please report this at http://bugs.launchpad.net/nova/ and attach the Nova API log if possible.
  <class 'oslo_config.cfg.ConfigFileValueError'> (HTTP 500) (Request-ID: req-c4d4fb05-26d1-4ea7-8261-79553c7bf000)
  
  here is the Nova API log:
  2016-11-04 22:44:09.094 22682 ERROR sqlalchemy.pool.QueuePool   File "/usr/lib/python2.7/dist-packages/eventlet/hubs/hub.py", line 294, in switch
  2016-11-04 22:44:09.094 22682 ERROR sqlalchemy.pool.QueuePool     return self.greenlet.switch()
  2016-11-04 22:44:09.094 22682 ERROR sqlalchemy.pool.QueuePool GreenletExit
  2016-11-04 22:44:09.094 22682 ERROR sqlalchemy.pool.QueuePool
  2016-11-04 22:44:09.145 22683 INFO oslo_service.service [-] Parent process has died unexpectedly, exiting
  2016-11-04 22:44:09.146 22683 INFO nova.wsgi [-] Stopping WSGI server.
  2016-11-04 22:44:09.147 22683 INFO nova.wsgi [-] Stopping WSGI server.
  2016-11-04 22:44:09.159 22687 INFO oslo_service.service [-] Parent process has died unexpectedly, exiting
  2016-11-04 22:44:09.160 22687 INFO nova.wsgi [-] Stopping WSGI server.
  2016-11-04 22:44:09.161 22687 INFO nova.wsgi [-] Stopping WSGI server.
  2016-11-04 22:44:09.161 22687 ERROR sqlalchemy.pool.QueuePool [req-00fcf45d-96b5-424b-ad93-52aa38e6000d - - - - -] Exception during reset or similar
  2016-11-04 22:44:09.161 22687 ERROR sqlalchemy.pool.QueuePool Traceback (most recent call last):
  2016-11-04 22:44:09.161 22687 ERROR sqlalchemy.pool.QueuePool   File "/usr/lib/python2.7/dist-packages/sqlalchemy/pool.py", line 636, in _finalize_fairy
  2016-11-04 22:44:09.161 22687 ERROR sqlalchemy.pool.QueuePool     fairy._reset(pool)
  2016-11-04 22:44:09.161 22687 ERROR sqlalchemy.pool.QueuePool   File "/usr/lib/python2.7/dist-packages/sqlalchemy/pool.py", line 774, in _reset
  2016-11-04 22:44:09.161 22687 ERROR sqlalchemy.pool.QueuePool     self._reset_agent.rollback()
  2016-11-04 22:44:09.161 22687 ERROR sqlalchemy.pool.QueuePool   File "/usr/lib/python2.7/dist-packages/sqlalchemy/engine/base.py", line 1563, in rollback
  2016-11-04 22:44:09.161 22687 ERROR sqlalchemy.pool.QueuePool     self._do_rollback()
  2016-11-04 22:44:09.161 22687 ERROR sqlalchemy.pool.QueuePool   File "/usr/lib/python2.7/dist-packages/sqlalchemy/engine/base.py", line 1601, in _do_rollback
  2016-11-04 22:44:09.161 22687 ERROR sqlalchemy.pool.QueuePool     self.connection._rollback_impl()
  2016-11-04 22:44:09.161 22687 ERROR sqlalchemy.pool.QueuePool   File "/usr/lib/python2.7/dist-packages/sqlalchemy/engine/base.py", line 670, in _rollback_impl
  2016-11-04 22:44:09.161 22687 ERROR sqlalchemy.pool.QueuePool     self._handle_dbapi_exception(e, None, None, None, None)
  2016-11-04 22:44:09.161 22687 ERROR sqlalchemy.pool.QueuePool   File "/usr/lib/python2.7/dist-packages/sqlalchemy/engine/base.py", line 1353, in _handle_dbapi_exception
  2016-11-04 22:44:09.161 22687 ERROR sqlalchemy.pool.QueuePool     self.engine.pool._invalidate(dbapi_conn_wrapper, e)
  2016-11-04 22:44:09.161 22687 ERROR sqlalchemy.pool.QueuePool   File "/usr/lib/python2.7/dist-packages/sqlalchemy/pool.py", line 340, in _invalidate
  2016-11-04 22:44:09.161 22687 ERROR sqlalchemy.pool.QueuePool     connection.invalidate(exception)
  2016-11-04 22:44:09.161 22687 ERROR sqlalchemy.pool.QueuePool   File "/usr/lib/python2.7/dist-packages/sqlalchemy/pool.py", line 843, in invalidate
  2016-11-04 22:44:09.161 22687 ERROR sqlalchemy.pool.QueuePool     self._checkin()
  2016-11-04 22:44:09.161 22687 ERROR sqlalchemy.pool.QueuePool   File "/usr/lib/python2.7/dist-packages/sqlalchemy/pool.py", line 758, in _checkin
  2016-11-04 22:44:09.161 22687 ERROR sqlalchemy.pool.QueuePool     self._pool, None, self._echo, fairy=self)
  2016-11-04 22:44:09.161 22687 ERROR sqlalchemy.pool.QueuePool   File "/usr/lib/python2.7/dist-packages/sqlalchemy/pool.py", line 650, in _finalize_fairy
  2016-11-04 22:44:09.161 22687 ERROR sqlalchemy.pool.QueuePool     connection_record.checkin()
  2016-11-04 22:44:09.161 22687 ERROR sqlalchemy.pool.QueuePool   File "/usr/lib/python2.7/dist-packages/sqlalchemy/pool.py", line 509, in checkin
  2016-11-04 22:44:09.161 22687 ERROR sqlalchemy.pool.QueuePool     pool.dispatch.checkin(connection, self)
  2016-11-04 22:44:09.161 22687 ERROR sqlalchemy.pool.QueuePool   File "/usr/lib/python2.7/dist-packages/sqlalchemy/event/attr.py", line 256, in __call__
  2016-11-04 22:44:09.161 22687 ERROR sqlalchemy.pool.QueuePool     fn(*args, **kw)
  2016-11-04 22:44:09.161 22687 ERROR sqlalchemy.pool.QueuePool   File "/usr/lib/python2.7/dist-packages/oslo_db/sqlalchemy/engines.py", line 50, in _thread_yield
  2016-11-04 22:44:09.161 22687 ERROR sqlalchemy.pool.QueuePool     time.sleep(0)
  2016-11-04 22:44:09.161 22687 ERROR sqlalchemy.pool.QueuePool   File "/usr/lib/python2.7/dist-packages/eventlet/greenthread.py", line 34, in sleep
  2016-11-04 22:44:09.161 22687 ERROR sqlalchemy.pool.QueuePool     hub.switch()
  2016-11-04 22:44:09.161 22687 ERROR sqlalchemy.pool.QueuePool   File "/usr/lib/python2.7/dist-packages/eventlet/hubs/hub.py", line 294, in switch
  2016-11-04 22:44:09.161 22687 ERROR sqlalchemy.pool.QueuePool     return self.greenlet.switch()
  2016-11-04 22:44:09.161 22687 ERROR sqlalchemy.pool.QueuePool GreenletExit
  2016-11-04 22:44:09.161 22687 ERROR sqlalchemy.pool.QueuePool

-- 
You received this bug notification because you are a member of Yahoo!
Engineering Team, which is subscribed to OpenStack Compute (nova).
https://bugs.launchpad.net/bugs/1639362

Title:
  Unexpected API Error: oslo_config.cfg.ConfigFileValueError

Status in OpenStack Compute (nova):
  New

Bug description:
  OpenStack version: Newton

  $ dpkg -l | grep nova
  ii  nova-api                           2:14.0.1-0ubuntu1~cloud0              all          OpenStack Compute - API frontend
  ii  nova-common                        2:14.0.1-0ubuntu1~cloud0              all          OpenStack Compute - common files
  ii  nova-conductor                     2:14.0.1-0ubuntu1~cloud0              all          OpenStack Compute - conductor service
  ii  nova-consoleauth                   2:14.0.1-0ubuntu1~cloud0              all          OpenStack Compute - Console Authenticator
  ii  nova-novncproxy                    2:14.0.1-0ubuntu1~cloud0              all          OpenStack Compute - NoVNC proxy
  ii  nova-scheduler                     2:14.0.1-0ubuntu1~cloud0              all          OpenStack Compute - virtual machine scheduler
  ii  python-nova                        2:14.0.1-0ubuntu1~cloud0              all          OpenStack Compute Python libraries
  ii  python-novaclient                  2:6.0.0-0ubuntu1~cloud0               all          client library for OpenStack Compute API - Python 2.7


  When issuing:
  openstack server create --flavor m1.nano --image cirros   --nic net-id=84afca3b-da51-45a5-aaa1-f49d7302da48 --security-group default   --key-name mykey provider-instance

  I get following error:
  Unexpected API Error. Please report this at http://bugs.launchpad.net/nova/ and attach the Nova API log if possible.
  <class 'oslo_config.cfg.ConfigFileValueError'> (HTTP 500) (Request-ID: req-c4d4fb05-26d1-4ea7-8261-79553c7bf000)

  here is the Nova API log:
  2016-11-04 22:44:09.094 22682 ERROR sqlalchemy.pool.QueuePool   File "/usr/lib/python2.7/dist-packages/eventlet/hubs/hub.py", line 294, in switch
  2016-11-04 22:44:09.094 22682 ERROR sqlalchemy.pool.QueuePool     return self.greenlet.switch()
  2016-11-04 22:44:09.094 22682 ERROR sqlalchemy.pool.QueuePool GreenletExit
  2016-11-04 22:44:09.094 22682 ERROR sqlalchemy.pool.QueuePool
  2016-11-04 22:44:09.145 22683 INFO oslo_service.service [-] Parent process has died unexpectedly, exiting
  2016-11-04 22:44:09.146 22683 INFO nova.wsgi [-] Stopping WSGI server.
  2016-11-04 22:44:09.147 22683 INFO nova.wsgi [-] Stopping WSGI server.
  2016-11-04 22:44:09.159 22687 INFO oslo_service.service [-] Parent process has died unexpectedly, exiting
  2016-11-04 22:44:09.160 22687 INFO nova.wsgi [-] Stopping WSGI server.
  2016-11-04 22:44:09.161 22687 INFO nova.wsgi [-] Stopping WSGI server.
  2016-11-04 22:44:09.161 22687 ERROR sqlalchemy.pool.QueuePool [req-00fcf45d-96b5-424b-ad93-52aa38e6000d - - - - -] Exception during reset or similar
  2016-11-04 22:44:09.161 22687 ERROR sqlalchemy.pool.QueuePool Traceback (most recent call last):
  2016-11-04 22:44:09.161 22687 ERROR sqlalchemy.pool.QueuePool   File "/usr/lib/python2.7/dist-packages/sqlalchemy/pool.py", line 636, in _finalize_fairy
  2016-11-04 22:44:09.161 22687 ERROR sqlalchemy.pool.QueuePool     fairy._reset(pool)
  2016-11-04 22:44:09.161 22687 ERROR sqlalchemy.pool.QueuePool   File "/usr/lib/python2.7/dist-packages/sqlalchemy/pool.py", line 774, in _reset
  2016-11-04 22:44:09.161 22687 ERROR sqlalchemy.pool.QueuePool     self._reset_agent.rollback()
  2016-11-04 22:44:09.161 22687 ERROR sqlalchemy.pool.QueuePool   File "/usr/lib/python2.7/dist-packages/sqlalchemy/engine/base.py", line 1563, in rollback
  2016-11-04 22:44:09.161 22687 ERROR sqlalchemy.pool.QueuePool     self._do_rollback()
  2016-11-04 22:44:09.161 22687 ERROR sqlalchemy.pool.QueuePool   File "/usr/lib/python2.7/dist-packages/sqlalchemy/engine/base.py", line 1601, in _do_rollback
  2016-11-04 22:44:09.161 22687 ERROR sqlalchemy.pool.QueuePool     self.connection._rollback_impl()
  2016-11-04 22:44:09.161 22687 ERROR sqlalchemy.pool.QueuePool   File "/usr/lib/python2.7/dist-packages/sqlalchemy/engine/base.py", line 670, in _rollback_impl
  2016-11-04 22:44:09.161 22687 ERROR sqlalchemy.pool.QueuePool     self._handle_dbapi_exception(e, None, None, None, None)
  2016-11-04 22:44:09.161 22687 ERROR sqlalchemy.pool.QueuePool   File "/usr/lib/python2.7/dist-packages/sqlalchemy/engine/base.py", line 1353, in _handle_dbapi_exception
  2016-11-04 22:44:09.161 22687 ERROR sqlalchemy.pool.QueuePool     self.engine.pool._invalidate(dbapi_conn_wrapper, e)
  2016-11-04 22:44:09.161 22687 ERROR sqlalchemy.pool.QueuePool   File "/usr/lib/python2.7/dist-packages/sqlalchemy/pool.py", line 340, in _invalidate
  2016-11-04 22:44:09.161 22687 ERROR sqlalchemy.pool.QueuePool     connection.invalidate(exception)
  2016-11-04 22:44:09.161 22687 ERROR sqlalchemy.pool.QueuePool   File "/usr/lib/python2.7/dist-packages/sqlalchemy/pool.py", line 843, in invalidate
  2016-11-04 22:44:09.161 22687 ERROR sqlalchemy.pool.QueuePool     self._checkin()
  2016-11-04 22:44:09.161 22687 ERROR sqlalchemy.pool.QueuePool   File "/usr/lib/python2.7/dist-packages/sqlalchemy/pool.py", line 758, in _checkin
  2016-11-04 22:44:09.161 22687 ERROR sqlalchemy.pool.QueuePool     self._pool, None, self._echo, fairy=self)
  2016-11-04 22:44:09.161 22687 ERROR sqlalchemy.pool.QueuePool   File "/usr/lib/python2.7/dist-packages/sqlalchemy/pool.py", line 650, in _finalize_fairy
  2016-11-04 22:44:09.161 22687 ERROR sqlalchemy.pool.QueuePool     connection_record.checkin()
  2016-11-04 22:44:09.161 22687 ERROR sqlalchemy.pool.QueuePool   File "/usr/lib/python2.7/dist-packages/sqlalchemy/pool.py", line 509, in checkin
  2016-11-04 22:44:09.161 22687 ERROR sqlalchemy.pool.QueuePool     pool.dispatch.checkin(connection, self)
  2016-11-04 22:44:09.161 22687 ERROR sqlalchemy.pool.QueuePool   File "/usr/lib/python2.7/dist-packages/sqlalchemy/event/attr.py", line 256, in __call__
  2016-11-04 22:44:09.161 22687 ERROR sqlalchemy.pool.QueuePool     fn(*args, **kw)
  2016-11-04 22:44:09.161 22687 ERROR sqlalchemy.pool.QueuePool   File "/usr/lib/python2.7/dist-packages/oslo_db/sqlalchemy/engines.py", line 50, in _thread_yield
  2016-11-04 22:44:09.161 22687 ERROR sqlalchemy.pool.QueuePool     time.sleep(0)
  2016-11-04 22:44:09.161 22687 ERROR sqlalchemy.pool.QueuePool   File "/usr/lib/python2.7/dist-packages/eventlet/greenthread.py", line 34, in sleep
  2016-11-04 22:44:09.161 22687 ERROR sqlalchemy.pool.QueuePool     hub.switch()
  2016-11-04 22:44:09.161 22687 ERROR sqlalchemy.pool.QueuePool   File "/usr/lib/python2.7/dist-packages/eventlet/hubs/hub.py", line 294, in switch
  2016-11-04 22:44:09.161 22687 ERROR sqlalchemy.pool.QueuePool     return self.greenlet.switch()
  2016-11-04 22:44:09.161 22687 ERROR sqlalchemy.pool.QueuePool GreenletExit
  2016-11-04 22:44:09.161 22687 ERROR sqlalchemy.pool.QueuePool

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