[PKG-Openstack-devel] ERROR nova.api.openstack.extensions CantStartEngineError: No sql_connection parameter is established

Turbo Fredriksson turbo at bayour.com
Mon Jun 13 19:10:50 UTC 2016


Sorry for the crosspost, but this looks like a bug (and from
what I've seen on the 'Net, it is), but because I have very
little knowledge in OS, it could just as well be my inability
to configure it correctly.. 


I'm trying to launch my first instance, but I'm getting

	Error: Unable to create the server.

in the web UI and in the log:

----- s n i p -----
==> /var/log/nova/nova-api.log <==
2016-06-13 19:51:30.422 3582 ERROR nova.api.openstack.extensions [req-fed50cd6-81a7-4049-a827-18694b586033 0b160915426049f9a95f2857ee3c1bfd dd30640571db4298a0bca8c35359d263 - - -] Unexpected exception in API method
2016-06-13 19:51:30.422 3582 ERROR nova.api.openstack.extensions Traceback (most recent call last):
2016-06-13 19:51:30.422 3582 ERROR nova.api.openstack.extensions   File "/usr/lib/python2.7/dist-packages/nova/api/openstack/extensions.py", line 478, in wrapped
2016-06-13 19:51:30.422 3582 ERROR nova.api.openstack.extensions     return f(*args, **kwargs)
2016-06-13 19:51:30.422 3582 ERROR nova.api.openstack.extensions   File "/usr/lib/python2.7/dist-packages/nova/api/validation/__init__.py", line 73, in wrapper
2016-06-13 19:51:30.422 3582 ERROR nova.api.openstack.extensions     return func(*args, **kwargs)
2016-06-13 19:51:30.422 3582 ERROR nova.api.openstack.extensions   File "/usr/lib/python2.7/dist-packages/nova/api/validation/__init__.py", line 73, in wrapper
2016-06-13 19:51:30.422 3582 ERROR nova.api.openstack.extensions     return func(*args, **kwargs)
2016-06-13 19:51:30.422 3582 ERROR nova.api.openstack.extensions   File "/usr/lib/python2.7/dist-packages/nova/api/validation/__init__.py", line 73, in wrapper
2016-06-13 19:51:30.422 3582 ERROR nova.api.openstack.extensions     return func(*args, **kwargs)
2016-06-13 19:51:30.422 3582 ERROR nova.api.openstack.extensions   File "/usr/lib/python2.7/dist-packages/nova/api/openstack/compute/servers.py", line 629, in create
2016-06-13 19:51:30.422 3582 ERROR nova.api.openstack.extensions     **create_kwargs)
2016-06-13 19:51:30.422 3582 ERROR nova.api.openstack.extensions   File "/usr/lib/python2.7/dist-packages/nova/hooks.py", line 154, in inner
2016-06-13 19:51:30.422 3582 ERROR nova.api.openstack.extensions     rv = f(*args, **kwargs)
2016-06-13 19:51:30.422 3582 ERROR nova.api.openstack.extensions   File "/usr/lib/python2.7/dist-packages/nova/compute/api.py", line 1556, in create
2016-06-13 19:51:30.422 3582 ERROR nova.api.openstack.extensions     check_server_group_quota=check_server_group_quota)
2016-06-13 19:51:30.422 3582 ERROR nova.api.openstack.extensions   File "/usr/lib/python2.7/dist-packages/nova/compute/api.py", line 1169, in _create_instance
2016-06-13 19:51:30.422 3582 ERROR nova.api.openstack.extensions     instance_group, check_server_group_quota, filter_properties)
2016-06-13 19:51:30.422 3582 ERROR nova.api.openstack.extensions   File "/usr/lib/python2.7/dist-packages/nova/compute/api.py", line 1027, in _provision_instances
2016-06-13 19:51:30.422 3582 ERROR nova.api.openstack.extensions     quotas.rollback()
2016-06-13 19:51:30.422 3582 ERROR nova.api.openstack.extensions   File "/usr/lib/python2.7/dist-packages/oslo_utils/excutils.py", line 220, in __exit__
2016-06-13 19:51:30.422 3582 ERROR nova.api.openstack.extensions     self.force_reraise()
2016-06-13 19:51:30.422 3582 ERROR nova.api.openstack.extensions   File "/usr/lib/python2.7/dist-packages/oslo_utils/excutils.py", line 196, in force_reraise
2016-06-13 19:51:30.422 3582 ERROR nova.api.openstack.extensions     six.reraise(self.type_, self.value, self.tb)
2016-06-13 19:51:30.422 3582 ERROR nova.api.openstack.extensions   File "/usr/lib/python2.7/dist-packages/nova/compute/api.py", line 969, in _provision_instances
2016-06-13 19:51:30.422 3582 ERROR nova.api.openstack.extensions     req_spec.create()
2016-06-13 19:51:30.422 3582 ERROR nova.api.openstack.extensions   File "/usr/lib/python2.7/dist-packages/oslo_versionedobjects/base.py", line 223, in wrapper
2016-06-13 19:51:30.422 3582 ERROR nova.api.openstack.extensions     return fn(self, *args, **kwargs)
2016-06-13 19:51:30.422 3582 ERROR nova.api.openstack.extensions   File "/usr/lib/python2.7/dist-packages/nova/objects/request_spec.py", line 432, in create
2016-06-13 19:51:30.422 3582 ERROR nova.api.openstack.extensions     db_spec = self._create_in_db(self._context, updates)
2016-06-13 19:51:30.422 3582 ERROR nova.api.openstack.extensions   File "/usr/lib/python2.7/dist-packages/oslo_db/sqlalchemy/enginefacade.py", line 708, in wrapper
2016-06-13 19:51:30.422 3582 ERROR nova.api.openstack.extensions     with self._transaction_scope(context):
2016-06-13 19:51:30.422 3582 ERROR nova.api.openstack.extensions   File "/usr/lib/python2.7/contextlib.py", line 17, in __enter__
2016-06-13 19:51:30.422 3582 ERROR nova.api.openstack.extensions     return self.gen.next()
2016-06-13 19:51:30.422 3582 ERROR nova.api.openstack.extensions   File "/usr/lib/python2.7/dist-packages/oslo_db/sqlalchemy/enginefacade.py", line 759, in _transaction_scope
2016-06-13 19:51:30.422 3582 ERROR nova.api.openstack.extensions     allow_async=self._allow_async) as resource:
2016-06-13 19:51:30.422 3582 ERROR nova.api.openstack.extensions   File "/usr/lib/python2.7/contextlib.py", line 17, in __enter__
2016-06-13 19:51:30.422 3582 ERROR nova.api.openstack.extensions     return self.gen.next()
2016-06-13 19:51:30.422 3582 ERROR nova.api.openstack.extensions   File "/usr/lib/python2.7/dist-packages/oslo_db/sqlalchemy/enginefacade.py", line 491, in _session
2016-06-13 19:51:30.422 3582 ERROR nova.api.openstack.extensions     bind=self.connection, mode=self.mode)
2016-06-13 19:51:30.422 3582 ERROR nova.api.openstack.extensions   File "/usr/lib/python2.7/dist-packages/oslo_db/sqlalchemy/enginefacade.py", line 272, in _create_session
2016-06-13 19:51:30.422 3582 ERROR nova.api.openstack.extensions     self._start()
2016-06-13 19:51:30.422 3582 ERROR nova.api.openstack.extensions   File "/usr/lib/python2.7/dist-packages/oslo_db/sqlalchemy/enginefacade.py", line 338, in _start
2016-06-13 19:51:30.422 3582 ERROR nova.api.openstack.extensions     engine_args, maker_args)
2016-06-13 19:51:30.422 3582 ERROR nova.api.openstack.extensions   File "/usr/lib/python2.7/dist-packages/oslo_db/sqlalchemy/enginefacade.py", line 360, in _setup_for_connection
2016-06-13 19:51:30.422 3582 ERROR nova.api.openstack.extensions     "No sql_connection parameter is established")
2016-06-13 19:51:30.422 3582 ERROR nova.api.openstack.extensions CantStartEngineError: No sql_connection parameter is established
2016-06-13 19:51:30.422 3582 ERROR nova.api.openstack.extensions 
2016-06-13 19:51:30.428 3582 INFO nova.api.openstack.wsgi [req-fed50cd6-81a7-4049-a827-18694b586033 0b160915426049f9a95f2857ee3c1bfd dd30640571db4298a0bca8c35359d263 - - -] HTTP exception thrown: Unexpected API Error. Please report this at http://bugs.launchpad.net/nova/ and attach the Nova API log if possible.
<class 'oslo_db.exception.CantStartEngineError'>
2016-06-13 19:51:30.431 3582 INFO nova.osapi_compute.wsgi.server [req-fed50cd6-81a7-4049-a827-18694b586033 0b160915426049f9a95f2857ee3c1bfd dd30640571db4298a0bca8c35359d263 - - -] 10.0.4.1 "POST /v2/dd30640571db4298a0bca8c35359d263/os-volumes_boot HTTP/1.1" status: 500 len: 443 time: 1.4813468
----- s n i p -----

This is Openstack on Debian GNU/Linux Sid, nova v2:13.0.0-3.


The /etc/nova/nova.conf file say that "sql_connection" is deprecated,
and [instead] the "connection" is enabled instead. And apparently that
works for everything else (as far as I can tell):

	connection = mysql+pymysql://user:r00tme@control.domain.tld/db

Using this in the shell with the "mysql" command works just fine,
from the whole network. I see no information of any kind on the
Compute (only have two hosts at the moment - the Control with
everything except Compute on and the Compute node with, well,
Nova compute on):

Control node:

  bladeA01b:~# dpkg -l nova\* | grep ^ii
  ii  nova-api          2:13.0.0-3  all  OpenStack Compute - compute API frontend
  ii  nova-common       2:13.0.0-3  all  OpenStack Compute - common files
  ii  nova-scheduler    2:13.0.0-3  all  OpenStack Compute - virtual machine scheduler
  ii  nova-volume       2:13.0.0-3  all  OpenStack Compute - storage metapackage

Compute note:

  bladeA03b:~# dpkg -l nova\* | grep ^ii
  ii  nova-common       2:13.0.0-3  all  OpenStack Compute - common files
  ii  nova-compute      2:13.0.0-3  all  OpenStack Compute - compute node
  ii  nova-compute-kvm  2:13.0.0-3  all  OpenStack Compute - compute node (KVM)
  ii  nova-console      2:13.0.0-3  all  OpenStack Compute - console
-- 
Turbo Fredriksson
turbo at bayour.com




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