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[Bug 1766267] [NEW] neutron server failed with 'NoForeignKeysError'

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Public bug reported:

The failure was found from Heat gate:

  http://logs.openstack.org/03/559803/2/gate/heat-functional-convg-
mysql-lbaasv2/825236e/logs/screen-q-svc.txt.gz#_Apr_23_10_02_01_252456

The error message and traceback is as following:

Apr 23 10:02:01.252456 ubuntu-xenial-ovh-gra1-0003676293 neutron-server[10199]: ERROR neutron.service [None req-494752bd-c98f-45d2-9a16-8e6c9dd02b8e None None] Unrecoverable error: please check log for details.: NoForeignKeysError: Could not determine join condition between parent/child tables on relationship ProviderResourceAssociation._provider_backref - there are no foreign keys linking these tables.  Ensure that referencing columns are associated with a ForeignKey or ForeignKeyConstraint, or specify a 'primaryjoin' expression.
Apr 23 10:02:01.253089 ubuntu-xenial-ovh-gra1-0003676293 neutron-server[10199]: ERROR neutron.service Traceback (most recent call last):
Apr 23 10:02:01.253204 ubuntu-xenial-ovh-gra1-0003676293 neutron-server[10199]: ERROR neutron.service   File "/opt/stack/new/neutron/neutron/service.py", line 86, in serve_wsgi
Apr 23 10:02:01.253315 ubuntu-xenial-ovh-gra1-0003676293 neutron-server[10199]: ERROR neutron.service     service.start()
Apr 23 10:02:01.253425 ubuntu-xenial-ovh-gra1-0003676293 neutron-server[10199]: ERROR neutron.service   File "/opt/stack/new/neutron/neutron/service.py", line 62, in start
Apr 23 10:02:01.253541 ubuntu-xenial-ovh-gra1-0003676293 neutron-server[10199]: ERROR neutron.service     self.wsgi_app = _run_wsgi(self.app_name)
Apr 23 10:02:01.253661 ubuntu-xenial-ovh-gra1-0003676293 neutron-server[10199]: ERROR neutron.service   File "/opt/stack/new/neutron/neutron/service.py", line 290, in _run_wsgi
Apr 23 10:02:01.253787 ubuntu-xenial-ovh-gra1-0003676293 neutron-server[10199]: ERROR neutron.service     app = config.load_paste_app(app_name)
Apr 23 10:02:01.253918 ubuntu-xenial-ovh-gra1-0003676293 neutron-server[10199]: ERROR neutron.service   File "/opt/stack/new/neutron/neutron/common/config.py", line 122, in load_paste_app
Apr 23 10:02:01.254024 ubuntu-xenial-ovh-gra1-0003676293 neutron-server[10199]: ERROR neutron.service     app = loader.load_app(app_name)
Apr 23 10:02:01.254128 ubuntu-xenial-ovh-gra1-0003676293 neutron-server[10199]: ERROR neutron.service   File "/usr/local/lib/python2.7/dist-packages/oslo_service/wsgi.py", line 353, in load_app
Apr 23 10:02:01.254231 ubuntu-xenial-ovh-gra1-0003676293 neutron-server[10199]: ERROR neutron.service     return deploy.loadapp("config:%s" % self.config_path, name=name)
Apr 23 10:02:01.254351 ubuntu-xenial-ovh-gra1-0003676293 neutron-server[10199]: ERROR neutron.service   File "/usr/local/lib/python2.7/dist-packages/paste/deploy/loadwsgi.py", line 247, in loadapp
Apr 23 10:02:01.254456 ubuntu-xenial-ovh-gra1-0003676293 neutron-server[10199]: ERROR neutron.service     return loadobj(APP, uri, name=name, **kw)
Apr 23 10:02:01.254573 ubuntu-xenial-ovh-gra1-0003676293 neutron-server[10199]: ERROR neutron.service   File "/usr/local/lib/python2.7/dist-packages/paste/deploy/loadwsgi.py", line 272, in loadobj
Apr 23 10:02:01.254700 ubuntu-xenial-ovh-gra1-0003676293 neutron-server[10199]: ERROR neutron.service     return context.create()
Apr 23 10:02:01.254831 ubuntu-xenial-ovh-gra1-0003676293 neutron-server[10199]: ERROR neutron.service   File "/usr/local/lib/python2.7/dist-packages/paste/deploy/loadwsgi.py", line 710, in create
Apr 23 10:02:01.254954 ubuntu-xenial-ovh-gra1-0003676293 neutron-server[10199]: ERROR neutron.service     return self.object_type.invoke(self)
Apr 23 10:02:01.255108 ubuntu-xenial-ovh-gra1-0003676293 neutron-server[10199]: ERROR neutron.service   File "/usr/local/lib/python2.7/dist-packages/paste/deploy/loadwsgi.py", line 144, in invoke
Apr 23 10:02:01.255392 ubuntu-xenial-ovh-gra1-0003676293 neutron-server[10199]: ERROR neutron.service     **context.local_conf)
Apr 23 10:02:01.255616 ubuntu-xenial-ovh-gra1-0003676293 neutron-server[10199]: ERROR neutron.service   File "/usr/local/lib/python2.7/dist-packages/paste/deploy/util.py", line 55, in fix_call
Apr 23 10:02:01.255851 ubuntu-xenial-ovh-gra1-0003676293 neutron-server[10199]: ERROR neutron.service     val = callable(*args, **kw)
Apr 23 10:02:01.256092 ubuntu-xenial-ovh-gra1-0003676293 neutron-server[10199]: ERROR neutron.service   File "/usr/local/lib/python2.7/dist-packages/paste/urlmap.py", line 31, in urlmap_factory
Apr 23 10:02:01.256312 ubuntu-xenial-ovh-gra1-0003676293 neutron-server[10199]: ERROR neutron.service     app = loader.get_app(app_name, global_conf=global_conf)
Apr 23 10:02:01.256582 ubuntu-xenial-ovh-gra1-0003676293 neutron-server[10199]: ERROR neutron.service   File "/usr/local/lib/python2.7/dist-packages/paste/deploy/loadwsgi.py", line 350, in get_app
Apr 23 10:02:01.256821 ubuntu-xenial-ovh-gra1-0003676293 neutron-server[10199]: ERROR neutron.service     name=name, global_conf=global_conf).create()
Apr 23 10:02:01.257047 ubuntu-xenial-ovh-gra1-0003676293 neutron-server[10199]: ERROR neutron.service   File "/usr/local/lib/python2.7/dist-packages/paste/deploy/loadwsgi.py", line 710, in create
Apr 23 10:02:01.257267 ubuntu-xenial-ovh-gra1-0003676293 neutron-server[10199]: ERROR neutron.service     return self.object_type.invoke(self)
Apr 23 10:02:01.257489 ubuntu-xenial-ovh-gra1-0003676293 neutron-server[10199]: ERROR neutron.service   File "/usr/local/lib/python2.7/dist-packages/paste/deploy/loadwsgi.py", line 144, in invoke
Apr 23 10:02:01.257753 ubuntu-xenial-ovh-gra1-0003676293 neutron-server[10199]: ERROR neutron.service     **context.local_conf)
Apr 23 10:02:01.257976 ubuntu-xenial-ovh-gra1-0003676293 neutron-server[10199]: ERROR neutron.service   File "/usr/local/lib/python2.7/dist-packages/paste/deploy/util.py", line 55, in fix_call
Apr 23 10:02:01.258194 ubuntu-xenial-ovh-gra1-0003676293 neutron-server[10199]: ERROR neutron.service     val = callable(*args, **kw)
Apr 23 10:02:01.258411 ubuntu-xenial-ovh-gra1-0003676293 neutron-server[10199]: ERROR neutron.service   File "/opt/stack/new/neutron/neutron/auth.py", line 47, in pipeline_factory
Apr 23 10:02:01.258693 ubuntu-xenial-ovh-gra1-0003676293 neutron-server[10199]: ERROR neutron.service     app = loader.get_app(pipeline[-1])
Apr 23 10:02:01.258925 ubuntu-xenial-ovh-gra1-0003676293 neutron-server[10199]: ERROR neutron.service   File "/usr/local/lib/python2.7/dist-packages/paste/deploy/loadwsgi.py", line 350, in get_app
Apr 23 10:02:01.259187 ubuntu-xenial-ovh-gra1-0003676293 neutron-server[10199]: ERROR neutron.service     name=name, global_conf=global_conf).create()
Apr 23 10:02:01.259431 ubuntu-xenial-ovh-gra1-0003676293 neutron-server[10199]: ERROR neutron.service   File "/usr/local/lib/python2.7/dist-packages/paste/deploy/loadwsgi.py", line 710, in create
Apr 23 10:02:01.259659 ubuntu-xenial-ovh-gra1-0003676293 neutron-server[10199]: ERROR neutron.service     return self.object_type.invoke(self)
Apr 23 10:02:01.259989 ubuntu-xenial-ovh-gra1-0003676293 neutron-server[10199]: ERROR neutron.service   File "/usr/local/lib/python2.7/dist-packages/paste/deploy/loadwsgi.py", line 146, in invoke
Apr 23 10:02:01.260102 ubuntu-xenial-ovh-gra1-0003676293 neutron-server[10199]: ERROR neutron.service     return fix_call(context.object, context.global_conf, **context.local_conf)
Apr 23 10:02:01.260209 ubuntu-xenial-ovh-gra1-0003676293 neutron-server[10199]: ERROR neutron.service   File "/usr/local/lib/python2.7/dist-packages/paste/deploy/util.py", line 55, in fix_call
Apr 23 10:02:01.260336 ubuntu-xenial-ovh-gra1-0003676293 neutron-server[10199]: ERROR neutron.service     val = callable(*args, **kw)
Apr 23 10:02:01.260453 ubuntu-xenial-ovh-gra1-0003676293 neutron-server[10199]: ERROR neutron.service   File "/opt/stack/new/neutron/neutron/api/v2/router.py", line 25, in _factory
Apr 23 10:02:01.260588 ubuntu-xenial-ovh-gra1-0003676293 neutron-server[10199]: ERROR neutron.service     return pecan_app.v2_factory(global_config, **local_config)
Apr 23 10:02:01.260696 ubuntu-xenial-ovh-gra1-0003676293 neutron-server[10199]: ERROR neutron.service   File "/opt/stack/new/neutron/neutron/pecan_wsgi/app.py", line 47, in v2_factory
Apr 23 10:02:01.260886 ubuntu-xenial-ovh-gra1-0003676293 neutron-server[10199]: ERROR neutron.service     startup.initialize_all()
Apr 23 10:02:01.261074 ubuntu-xenial-ovh-gra1-0003676293 neutron-server[10199]: ERROR neutron.service   File "/opt/stack/new/neutron/neutron/pecan_wsgi/startup.py", line 39, in initialize_all
Apr 23 10:02:01.261262 ubuntu-xenial-ovh-gra1-0003676293 neutron-server[10199]: ERROR neutron.service     manager.init()
Apr 23 10:02:01.261389 ubuntu-xenial-ovh-gra1-0003676293 neutron-server[10199]: ERROR neutron.service   File "/opt/stack/new/neutron/neutron/manager.py", line 296, in init
Apr 23 10:02:01.261498 ubuntu-xenial-ovh-gra1-0003676293 neutron-server[10199]: ERROR neutron.service     NeutronManager.get_instance()
Apr 23 10:02:01.261638 ubuntu-xenial-ovh-gra1-0003676293 neutron-server[10199]: ERROR neutron.service   File "/opt/stack/new/neutron/neutron/manager.py", line 247, in get_instance
Apr 23 10:02:01.261747 ubuntu-xenial-ovh-gra1-0003676293 neutron-server[10199]: ERROR neutron.service     cls._create_instance()
Apr 23 10:02:01.261934 ubuntu-xenial-ovh-gra1-0003676293 neutron-server[10199]: ERROR neutron.service   File "/usr/local/lib/python2.7/dist-packages/oslo_concurrency/lockutils.py", line 274, in inner
Apr 23 10:02:01.262212 ubuntu-xenial-ovh-gra1-0003676293 neutron-server[10199]: ERROR neutron.service     return f(*args, **kwargs)
Apr 23 10:02:01.262328 ubuntu-xenial-ovh-gra1-0003676293 neutron-server[10199]: ERROR neutron.service   File "/opt/stack/new/neutron/neutron/manager.py", line 233, in _create_instance
Apr 23 10:02:01.262437 ubuntu-xenial-ovh-gra1-0003676293 neutron-server[10199]: ERROR neutron.service     cls._instance = cls()
Apr 23 10:02:01.262536 ubuntu-xenial-ovh-gra1-0003676293 neutron-server[10199]: ERROR neutron.service   File "/opt/stack/new/neutron/neutron/manager.py", line 141, in __init__
Apr 23 10:02:01.262692 ubuntu-xenial-ovh-gra1-0003676293 neutron-server[10199]: ERROR neutron.service     self._load_service_plugins()
Apr 23 10:02:01.262857 ubuntu-xenial-ovh-gra1-0003676293 neutron-server[10199]: ERROR neutron.service   File "/opt/stack/new/neutron/neutron/manager.py", line 203, in _load_service_plugins
Apr 23 10:02:01.262969 ubuntu-xenial-ovh-gra1-0003676293 neutron-server[10199]: ERROR neutron.service     provider)
Apr 23 10:02:01.263140 ubuntu-xenial-ovh-gra1-0003676293 neutron-server[10199]: ERROR neutron.service   File "/opt/stack/new/neutron/neutron/manager.py", line 166, in _get_plugin_instance
Apr 23 10:02:01.263253 ubuntu-xenial-ovh-gra1-0003676293 neutron-server[10199]: ERROR neutron.service     return plugin_class()
Apr 23 10:02:01.263351 ubuntu-xenial-ovh-gra1-0003676293 neutron-server[10199]: ERROR neutron.service   File "/opt/stack/new/neutron-lbaas/neutron_lbaas/services/loadbalancer/plugin.py", line 90, in __init__
Apr 23 10:02:01.263465 ubuntu-xenial-ovh-gra1-0003676293 neutron-server[10199]: ERROR neutron.service     self._load_drivers()
Apr 23 10:02:01.263574 ubuntu-xenial-ovh-gra1-0003676293 neutron-server[10199]: ERROR neutron.service   File "/opt/stack/new/neutron-lbaas/neutron_lbaas/services/loadbalancer/plugin.py", line 118, in _load_drivers
Apr 23 10:02:01.263729 ubuntu-xenial-ovh-gra1-0003676293 neutron-server[10199]: ERROR neutron.service     self._check_orphan_loadbalancer_associations(ctx, self.drivers.keys())
Apr 23 10:02:01.263870 ubuntu-xenial-ovh-gra1-0003676293 neutron-server[10199]: ERROR neutron.service   File "/opt/stack/new/neutron-lbaas/neutron_lbaas/services/loadbalancer/plugin.py", line 127, in _check_orphan_loadbalancer_associations
Apr 23 10:02:01.264053 ubuntu-xenial-ovh-gra1-0003676293 neutron-server[10199]: ERROR neutron.service     loadbalancers = self.db.get_loadbalancers(context)
Apr 23 10:02:01.264206 ubuntu-xenial-ovh-gra1-0003676293 neutron-server[10199]: ERROR neutron.service   File "/opt/stack/new/neutron-lbaas/neutron_lbaas/db/loadbalancer/loadbalancer_dbv2.py", line 396, in get_loadbalancers
Apr 23 10:02:01.264401 ubuntu-xenial-ovh-gra1-0003676293 neutron-server[10199]: ERROR neutron.service     filters=filters)
Apr 23 10:02:01.264582 ubuntu-xenial-ovh-gra1-0003676293 neutron-server[10199]: ERROR neutron.service   File "/opt/stack/new/neutron-lbaas/neutron_lbaas/db/loadbalancer/loadbalancer_dbv2.py", line 98, in _get_resources
Apr 23 10:02:01.264809 ubuntu-xenial-ovh-gra1-0003676293 neutron-server[10199]: ERROR neutron.service     filters=filters)
Apr 23 10:02:01.264967 ubuntu-xenial-ovh-gra1-0003676293 neutron-server[10199]: ERROR neutron.service   File "/opt/stack/new/neutron/neutron/db/common_db_mixin.py", line 82, in _get_collection_query
Apr 23 10:02:01.265143 ubuntu-xenial-ovh-gra1-0003676293 neutron-server[10199]: ERROR neutron.service     page_reverse)
Apr 23 10:02:01.265302 ubuntu-xenial-ovh-gra1-0003676293 neutron-server[10199]: ERROR neutron.service   File "/opt/stack/new/neutron/neutron/db/_model_query.py", line 256, in get_collection_query
Apr 23 10:02:01.265470 ubuntu-xenial-ovh-gra1-0003676293 neutron-server[10199]: ERROR neutron.service     collection = query_with_hooks(context, model)
Apr 23 10:02:01.265630 ubuntu-xenial-ovh-gra1-0003676293 neutron-server[10199]: ERROR neutron.service   File "/opt/stack/new/neutron/neutron/db/_model_query.py", line 137, in query_with_hooks
Apr 23 10:02:01.265797 ubuntu-xenial-ovh-gra1-0003676293 neutron-server[10199]: ERROR neutron.service     query = context.session.query(model)
Apr 23 10:02:01.265909 ubuntu-xenial-ovh-gra1-0003676293 neutron-server[10199]: ERROR neutron.service   File "/usr/local/lib/python2.7/dist-packages/sqlalchemy/orm/session.py", line 1399, in query
Apr 23 10:02:01.266021 ubuntu-xenial-ovh-gra1-0003676293 neutron-server[10199]: ERROR neutron.service     return self._query_cls(entities, self, **kwargs)
Apr 23 10:02:01.266157 ubuntu-xenial-ovh-gra1-0003676293 neutron-server[10199]: ERROR neutron.service   File "/usr/local/lib/python2.7/dist-packages/sqlalchemy/orm/query.py", line 141, in __init__
Apr 23 10:02:01.266295 ubuntu-xenial-ovh-gra1-0003676293 neutron-server[10199]: ERROR neutron.service     self._set_entities(entities)
Apr 23 10:02:01.266423 ubuntu-xenial-ovh-gra1-0003676293 neutron-server[10199]: ERROR neutron.service   File "/usr/local/lib/python2.7/dist-packages/sqlalchemy/orm/query.py", line 152, in _set_entities
Apr 23 10:02:01.266553 ubuntu-xenial-ovh-gra1-0003676293 neutron-server[10199]: ERROR neutron.service     self._set_entity_selectables(self._entities)
Apr 23 10:02:01.266663 ubuntu-xenial-ovh-gra1-0003676293 neutron-server[10199]: ERROR neutron.service   File "/usr/local/lib/python2.7/dist-packages/sqlalchemy/orm/query.py", line 182, in _set_entity_selectables
Apr 23 10:02:01.266910 ubuntu-xenial-ovh-gra1-0003676293 neutron-server[10199]: ERROR neutron.service     ent.setup_entity(*d[entity])
Apr 23 10:02:01.267097 ubuntu-xenial-ovh-gra1-0003676293 neutron-server[10199]: ERROR neutron.service   File "/usr/local/lib/python2.7/dist-packages/sqlalchemy/orm/query.py", line 3630, in setup_entity
Apr 23 10:02:01.267231 ubuntu-xenial-ovh-gra1-0003676293 neutron-server[10199]: ERROR neutron.service     self._with_polymorphic = ext_info.with_polymorphic_mappers
Apr 23 10:02:01.267363 ubuntu-xenial-ovh-gra1-0003676293 neutron-server[10199]: ERROR neutron.service   File "/usr/local/lib/python2.7/dist-packages/sqlalchemy/util/langhelpers.py", line 767, in __get__
Apr 23 10:02:01.267535 ubuntu-xenial-ovh-gra1-0003676293 neutron-server[10199]: ERROR neutron.service     obj.__dict__[self.__name__] = result = self.fget(obj)
Apr 23 10:02:01.267719 ubuntu-xenial-ovh-gra1-0003676293 neutron-server[10199]: ERROR neutron.service   File "/usr/local/lib/python2.7/dist-packages/sqlalchemy/orm/mapper.py", line 2011, in _with_polymorphic_mappers
Apr 23 10:02:01.267896 ubuntu-xenial-ovh-gra1-0003676293 neutron-server[10199]: ERROR neutron.service     configure_mappers()
Apr 23 10:02:01.268010 ubuntu-xenial-ovh-gra1-0003676293 neutron-server[10199]: ERROR neutron.service   File "/usr/local/lib/python2.7/dist-packages/sqlalchemy/orm/mapper.py", line 3029, in configure_mappers
Apr 23 10:02:01.268113 ubuntu-xenial-ovh-gra1-0003676293 neutron-server[10199]: ERROR neutron.service     mapper._post_configure_properties()
Apr 23 10:02:01.268225 ubuntu-xenial-ovh-gra1-0003676293 neutron-server[10199]: ERROR neutron.service   File "/usr/local/lib/python2.7/dist-packages/sqlalchemy/orm/mapper.py", line 1831, in _post_configure_properties
Apr 23 10:02:01.268334 ubuntu-xenial-ovh-gra1-0003676293 neutron-server[10199]: ERROR neutron.service     prop.post_instrument_class(self)
Apr 23 10:02:01.268437 ubuntu-xenial-ovh-gra1-0003676293 neutron-server[10199]: ERROR neutron.service   File "/usr/local/lib/python2.7/dist-packages/sqlalchemy/orm/interfaces.py", line 544, in post_instrument_class
Apr 23 10:02:01.268557 ubuntu-xenial-ovh-gra1-0003676293 neutron-server[10199]: ERROR neutron.service     self.strategy.init_class_attribute(mapper)
Apr 23 10:02:01.268670 ubuntu-xenial-ovh-gra1-0003676293 neutron-server[10199]: ERROR neutron.service   File "/usr/local/lib/python2.7/dist-packages/sqlalchemy/orm/strategies.py", line 507, in init_class_attribute
Apr 23 10:02:01.268782 ubuntu-xenial-ovh-gra1-0003676293 neutron-server[10199]: ERROR neutron.service     active_history=active_history
Apr 23 10:02:01.268903 ubuntu-xenial-ovh-gra1-0003676293 neutron-server[10199]: ERROR neutron.service   File "/usr/local/lib/python2.7/dist-packages/sqlalchemy/orm/strategies.py", line 106, in _register_attribute
Apr 23 10:02:01.269005 ubuntu-xenial-ovh-gra1-0003676293 neutron-server[10199]: ERROR neutron.service     **kw
Apr 23 10:02:01.269124 ubuntu-xenial-ovh-gra1-0003676293 neutron-server[10199]: ERROR neutron.service   File "/usr/local/lib/python2.7/dist-packages/sqlalchemy/orm/attributes.py", line 1524, in register_attribute_impl
Apr 23 10:02:01.269241 ubuntu-xenial-ovh-gra1-0003676293 neutron-server[10199]: ERROR neutron.service     manager.post_configure_attribute(key)
Apr 23 10:02:01.269354 ubuntu-xenial-ovh-gra1-0003676293 neutron-server[10199]: ERROR neutron.service   File "/usr/local/lib/python2.7/dist-packages/sqlalchemy/orm/instrumentation.py", line 278, in post_configure_attribute
Apr 23 10:02:01.269448 ubuntu-xenial-ovh-gra1-0003676293 neutron-server[10199]: ERROR neutron.service     attribute_instrument(self.class_, key, self[key])
Apr 23 10:02:01.269540 ubuntu-xenial-ovh-gra1-0003676293 neutron-server[10199]: ERROR neutron.service   File "/usr/local/lib/python2.7/dist-packages/sqlalchemy/event/attr.py", line 284, in __call__
Apr 23 10:02:01.269653 ubuntu-xenial-ovh-gra1-0003676293 neutron-server[10199]: ERROR neutron.service     fn(*args, **kw)
Apr 23 10:02:01.269765 ubuntu-xenial-ovh-gra1-0003676293 neutron-server[10199]: ERROR neutron.service   File "/usr/local/lib/python2.7/dist-packages/sqlalchemy/orm/events.py", line 71, in listen
Apr 23 10:02:01.269872 ubuntu-xenial-ovh-gra1-0003676293 neutron-server[10199]: ERROR neutron.service     return fn(target_cls, *arg)
Apr 23 10:02:01.269978 ubuntu-xenial-ovh-gra1-0003676293 neutron-server[10199]: ERROR neutron.service   File "/opt/stack/new/neutron/neutron/db/api.py", line 403, in _listen_for_changes
Apr 23 10:02:01.270085 ubuntu-xenial-ovh-gra1-0003676293 neutron-server[10199]: ERROR neutron.service     remote_mapper.add_property(name, backref_prop)
Apr 23 10:02:01.270217 ubuntu-xenial-ovh-gra1-0003676293 neutron-server[10199]: ERROR neutron.service   File "/usr/local/lib/python2.7/dist-packages/sqlalchemy/orm/mapper.py", line 1854, in add_property
Apr 23 10:02:01.270321 ubuntu-xenial-ovh-gra1-0003676293 neutron-server[10199]: ERROR neutron.service     self._configure_property(key, prop, init=self.configured)
Apr 23 10:02:01.270425 ubuntu-xenial-ovh-gra1-0003676293 neutron-server[10199]: ERROR neutron.service   File "/usr/local/lib/python2.7/dist-packages/sqlalchemy/orm/mapper.py", line 1731, in _configure_property
Apr 23 10:02:01.270528 ubuntu-xenial-ovh-gra1-0003676293 neutron-server[10199]: ERROR neutron.service     prop.init()
Apr 23 10:02:01.270648 ubuntu-xenial-ovh-gra1-0003676293 neutron-server[10199]: ERROR neutron.service   File "/usr/local/lib/python2.7/dist-packages/sqlalchemy/orm/interfaces.py", line 184, in init
Apr 23 10:02:01.270788 ubuntu-xenial-ovh-gra1-0003676293 neutron-server[10199]: ERROR neutron.service     self.do_init()
Apr 23 10:02:01.270897 ubuntu-xenial-ovh-gra1-0003676293 neutron-server[10199]: ERROR neutron.service   File "/usr/local/lib/python2.7/dist-packages/sqlalchemy/orm/relationships.py", line 1656, in do_init
Apr 23 10:02:01.271003 ubuntu-xenial-ovh-gra1-0003676293 neutron-server[10199]: ERROR neutron.service     self._setup_join_conditions()
Apr 23 10:02:01.271168 ubuntu-xenial-ovh-gra1-0003676293 neutron-server[10199]: ERROR neutron.service   File "/usr/local/lib/python2.7/dist-packages/sqlalchemy/orm/relationships.py", line 1731, in _setup_join_conditions
Apr 23 10:02:01.271292 ubuntu-xenial-ovh-gra1-0003676293 neutron-server[10199]: ERROR neutron.service     can_be_synced_fn=self._columns_are_mapped
Apr 23 10:02:01.271396 ubuntu-xenial-ovh-gra1-0003676293 neutron-server[10199]: ERROR neutron.service   File "/usr/local/lib/python2.7/dist-packages/sqlalchemy/orm/relationships.py", line 1998, in __init__
Apr 23 10:02:01.271510 ubuntu-xenial-ovh-gra1-0003676293 neutron-server[10199]: ERROR neutron.service     self._determine_joins()
Apr 23 10:02:01.271630 ubuntu-xenial-ovh-gra1-0003676293 neutron-server[10199]: ERROR neutron.service   File "/usr/local/lib/python2.7/dist-packages/sqlalchemy/orm/relationships.py", line 2103, in _determine_joins
Apr 23 10:02:01.271736 ubuntu-xenial-ovh-gra1-0003676293 neutron-server[10199]: ERROR neutron.service     "specify a 'primaryjoin' expression." % self.prop)
Apr 23 10:02:01.271853 ubuntu-xenial-ovh-gra1-0003676293 neutron-server[10199]: ERROR neutron.service NoForeignKeysError: Could not determine join condition between parent/child tables on relationship ProviderResourceAssociation._provider_backref - there are no foreign keys linking these tables.  Ensure that referencing columns are associated with a ForeignKey or ForeignKeyConstraint, or specify a 'primaryjoin' expression.

** Affects: neutron
     Importance: Undecided
     Assignee: Hongbin Lu (hongbin.lu)
         Status: In Progress

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https://bugs.launchpad.net/bugs/1766267

Title:
  neutron server failed with 'NoForeignKeysError'

Status in neutron:
  In Progress

Bug description:
  The failure was found from Heat gate:

    http://logs.openstack.org/03/559803/2/gate/heat-functional-convg-
  mysql-lbaasv2/825236e/logs/screen-q-svc.txt.gz#_Apr_23_10_02_01_252456

  The error message and traceback is as following:

  Apr 23 10:02:01.252456 ubuntu-xenial-ovh-gra1-0003676293 neutron-server[10199]: ERROR neutron.service [None req-494752bd-c98f-45d2-9a16-8e6c9dd02b8e None None] Unrecoverable error: please check log for details.: NoForeignKeysError: Could not determine join condition between parent/child tables on relationship ProviderResourceAssociation._provider_backref - there are no foreign keys linking these tables.  Ensure that referencing columns are associated with a ForeignKey or ForeignKeyConstraint, or specify a 'primaryjoin' expression.
  Apr 23 10:02:01.253089 ubuntu-xenial-ovh-gra1-0003676293 neutron-server[10199]: ERROR neutron.service Traceback (most recent call last):
  Apr 23 10:02:01.253204 ubuntu-xenial-ovh-gra1-0003676293 neutron-server[10199]: ERROR neutron.service   File "/opt/stack/new/neutron/neutron/service.py", line 86, in serve_wsgi
  Apr 23 10:02:01.253315 ubuntu-xenial-ovh-gra1-0003676293 neutron-server[10199]: ERROR neutron.service     service.start()
  Apr 23 10:02:01.253425 ubuntu-xenial-ovh-gra1-0003676293 neutron-server[10199]: ERROR neutron.service   File "/opt/stack/new/neutron/neutron/service.py", line 62, in start
  Apr 23 10:02:01.253541 ubuntu-xenial-ovh-gra1-0003676293 neutron-server[10199]: ERROR neutron.service     self.wsgi_app = _run_wsgi(self.app_name)
  Apr 23 10:02:01.253661 ubuntu-xenial-ovh-gra1-0003676293 neutron-server[10199]: ERROR neutron.service   File "/opt/stack/new/neutron/neutron/service.py", line 290, in _run_wsgi
  Apr 23 10:02:01.253787 ubuntu-xenial-ovh-gra1-0003676293 neutron-server[10199]: ERROR neutron.service     app = config.load_paste_app(app_name)
  Apr 23 10:02:01.253918 ubuntu-xenial-ovh-gra1-0003676293 neutron-server[10199]: ERROR neutron.service   File "/opt/stack/new/neutron/neutron/common/config.py", line 122, in load_paste_app
  Apr 23 10:02:01.254024 ubuntu-xenial-ovh-gra1-0003676293 neutron-server[10199]: ERROR neutron.service     app = loader.load_app(app_name)
  Apr 23 10:02:01.254128 ubuntu-xenial-ovh-gra1-0003676293 neutron-server[10199]: ERROR neutron.service   File "/usr/local/lib/python2.7/dist-packages/oslo_service/wsgi.py", line 353, in load_app
  Apr 23 10:02:01.254231 ubuntu-xenial-ovh-gra1-0003676293 neutron-server[10199]: ERROR neutron.service     return deploy.loadapp("config:%s" % self.config_path, name=name)
  Apr 23 10:02:01.254351 ubuntu-xenial-ovh-gra1-0003676293 neutron-server[10199]: ERROR neutron.service   File "/usr/local/lib/python2.7/dist-packages/paste/deploy/loadwsgi.py", line 247, in loadapp
  Apr 23 10:02:01.254456 ubuntu-xenial-ovh-gra1-0003676293 neutron-server[10199]: ERROR neutron.service     return loadobj(APP, uri, name=name, **kw)
  Apr 23 10:02:01.254573 ubuntu-xenial-ovh-gra1-0003676293 neutron-server[10199]: ERROR neutron.service   File "/usr/local/lib/python2.7/dist-packages/paste/deploy/loadwsgi.py", line 272, in loadobj
  Apr 23 10:02:01.254700 ubuntu-xenial-ovh-gra1-0003676293 neutron-server[10199]: ERROR neutron.service     return context.create()
  Apr 23 10:02:01.254831 ubuntu-xenial-ovh-gra1-0003676293 neutron-server[10199]: ERROR neutron.service   File "/usr/local/lib/python2.7/dist-packages/paste/deploy/loadwsgi.py", line 710, in create
  Apr 23 10:02:01.254954 ubuntu-xenial-ovh-gra1-0003676293 neutron-server[10199]: ERROR neutron.service     return self.object_type.invoke(self)
  Apr 23 10:02:01.255108 ubuntu-xenial-ovh-gra1-0003676293 neutron-server[10199]: ERROR neutron.service   File "/usr/local/lib/python2.7/dist-packages/paste/deploy/loadwsgi.py", line 144, in invoke
  Apr 23 10:02:01.255392 ubuntu-xenial-ovh-gra1-0003676293 neutron-server[10199]: ERROR neutron.service     **context.local_conf)
  Apr 23 10:02:01.255616 ubuntu-xenial-ovh-gra1-0003676293 neutron-server[10199]: ERROR neutron.service   File "/usr/local/lib/python2.7/dist-packages/paste/deploy/util.py", line 55, in fix_call
  Apr 23 10:02:01.255851 ubuntu-xenial-ovh-gra1-0003676293 neutron-server[10199]: ERROR neutron.service     val = callable(*args, **kw)
  Apr 23 10:02:01.256092 ubuntu-xenial-ovh-gra1-0003676293 neutron-server[10199]: ERROR neutron.service   File "/usr/local/lib/python2.7/dist-packages/paste/urlmap.py", line 31, in urlmap_factory
  Apr 23 10:02:01.256312 ubuntu-xenial-ovh-gra1-0003676293 neutron-server[10199]: ERROR neutron.service     app = loader.get_app(app_name, global_conf=global_conf)
  Apr 23 10:02:01.256582 ubuntu-xenial-ovh-gra1-0003676293 neutron-server[10199]: ERROR neutron.service   File "/usr/local/lib/python2.7/dist-packages/paste/deploy/loadwsgi.py", line 350, in get_app
  Apr 23 10:02:01.256821 ubuntu-xenial-ovh-gra1-0003676293 neutron-server[10199]: ERROR neutron.service     name=name, global_conf=global_conf).create()
  Apr 23 10:02:01.257047 ubuntu-xenial-ovh-gra1-0003676293 neutron-server[10199]: ERROR neutron.service   File "/usr/local/lib/python2.7/dist-packages/paste/deploy/loadwsgi.py", line 710, in create
  Apr 23 10:02:01.257267 ubuntu-xenial-ovh-gra1-0003676293 neutron-server[10199]: ERROR neutron.service     return self.object_type.invoke(self)
  Apr 23 10:02:01.257489 ubuntu-xenial-ovh-gra1-0003676293 neutron-server[10199]: ERROR neutron.service   File "/usr/local/lib/python2.7/dist-packages/paste/deploy/loadwsgi.py", line 144, in invoke
  Apr 23 10:02:01.257753 ubuntu-xenial-ovh-gra1-0003676293 neutron-server[10199]: ERROR neutron.service     **context.local_conf)
  Apr 23 10:02:01.257976 ubuntu-xenial-ovh-gra1-0003676293 neutron-server[10199]: ERROR neutron.service   File "/usr/local/lib/python2.7/dist-packages/paste/deploy/util.py", line 55, in fix_call
  Apr 23 10:02:01.258194 ubuntu-xenial-ovh-gra1-0003676293 neutron-server[10199]: ERROR neutron.service     val = callable(*args, **kw)
  Apr 23 10:02:01.258411 ubuntu-xenial-ovh-gra1-0003676293 neutron-server[10199]: ERROR neutron.service   File "/opt/stack/new/neutron/neutron/auth.py", line 47, in pipeline_factory
  Apr 23 10:02:01.258693 ubuntu-xenial-ovh-gra1-0003676293 neutron-server[10199]: ERROR neutron.service     app = loader.get_app(pipeline[-1])
  Apr 23 10:02:01.258925 ubuntu-xenial-ovh-gra1-0003676293 neutron-server[10199]: ERROR neutron.service   File "/usr/local/lib/python2.7/dist-packages/paste/deploy/loadwsgi.py", line 350, in get_app
  Apr 23 10:02:01.259187 ubuntu-xenial-ovh-gra1-0003676293 neutron-server[10199]: ERROR neutron.service     name=name, global_conf=global_conf).create()
  Apr 23 10:02:01.259431 ubuntu-xenial-ovh-gra1-0003676293 neutron-server[10199]: ERROR neutron.service   File "/usr/local/lib/python2.7/dist-packages/paste/deploy/loadwsgi.py", line 710, in create
  Apr 23 10:02:01.259659 ubuntu-xenial-ovh-gra1-0003676293 neutron-server[10199]: ERROR neutron.service     return self.object_type.invoke(self)
  Apr 23 10:02:01.259989 ubuntu-xenial-ovh-gra1-0003676293 neutron-server[10199]: ERROR neutron.service   File "/usr/local/lib/python2.7/dist-packages/paste/deploy/loadwsgi.py", line 146, in invoke
  Apr 23 10:02:01.260102 ubuntu-xenial-ovh-gra1-0003676293 neutron-server[10199]: ERROR neutron.service     return fix_call(context.object, context.global_conf, **context.local_conf)
  Apr 23 10:02:01.260209 ubuntu-xenial-ovh-gra1-0003676293 neutron-server[10199]: ERROR neutron.service   File "/usr/local/lib/python2.7/dist-packages/paste/deploy/util.py", line 55, in fix_call
  Apr 23 10:02:01.260336 ubuntu-xenial-ovh-gra1-0003676293 neutron-server[10199]: ERROR neutron.service     val = callable(*args, **kw)
  Apr 23 10:02:01.260453 ubuntu-xenial-ovh-gra1-0003676293 neutron-server[10199]: ERROR neutron.service   File "/opt/stack/new/neutron/neutron/api/v2/router.py", line 25, in _factory
  Apr 23 10:02:01.260588 ubuntu-xenial-ovh-gra1-0003676293 neutron-server[10199]: ERROR neutron.service     return pecan_app.v2_factory(global_config, **local_config)
  Apr 23 10:02:01.260696 ubuntu-xenial-ovh-gra1-0003676293 neutron-server[10199]: ERROR neutron.service   File "/opt/stack/new/neutron/neutron/pecan_wsgi/app.py", line 47, in v2_factory
  Apr 23 10:02:01.260886 ubuntu-xenial-ovh-gra1-0003676293 neutron-server[10199]: ERROR neutron.service     startup.initialize_all()
  Apr 23 10:02:01.261074 ubuntu-xenial-ovh-gra1-0003676293 neutron-server[10199]: ERROR neutron.service   File "/opt/stack/new/neutron/neutron/pecan_wsgi/startup.py", line 39, in initialize_all
  Apr 23 10:02:01.261262 ubuntu-xenial-ovh-gra1-0003676293 neutron-server[10199]: ERROR neutron.service     manager.init()
  Apr 23 10:02:01.261389 ubuntu-xenial-ovh-gra1-0003676293 neutron-server[10199]: ERROR neutron.service   File "/opt/stack/new/neutron/neutron/manager.py", line 296, in init
  Apr 23 10:02:01.261498 ubuntu-xenial-ovh-gra1-0003676293 neutron-server[10199]: ERROR neutron.service     NeutronManager.get_instance()
  Apr 23 10:02:01.261638 ubuntu-xenial-ovh-gra1-0003676293 neutron-server[10199]: ERROR neutron.service   File "/opt/stack/new/neutron/neutron/manager.py", line 247, in get_instance
  Apr 23 10:02:01.261747 ubuntu-xenial-ovh-gra1-0003676293 neutron-server[10199]: ERROR neutron.service     cls._create_instance()
  Apr 23 10:02:01.261934 ubuntu-xenial-ovh-gra1-0003676293 neutron-server[10199]: ERROR neutron.service   File "/usr/local/lib/python2.7/dist-packages/oslo_concurrency/lockutils.py", line 274, in inner
  Apr 23 10:02:01.262212 ubuntu-xenial-ovh-gra1-0003676293 neutron-server[10199]: ERROR neutron.service     return f(*args, **kwargs)
  Apr 23 10:02:01.262328 ubuntu-xenial-ovh-gra1-0003676293 neutron-server[10199]: ERROR neutron.service   File "/opt/stack/new/neutron/neutron/manager.py", line 233, in _create_instance
  Apr 23 10:02:01.262437 ubuntu-xenial-ovh-gra1-0003676293 neutron-server[10199]: ERROR neutron.service     cls._instance = cls()
  Apr 23 10:02:01.262536 ubuntu-xenial-ovh-gra1-0003676293 neutron-server[10199]: ERROR neutron.service   File "/opt/stack/new/neutron/neutron/manager.py", line 141, in __init__
  Apr 23 10:02:01.262692 ubuntu-xenial-ovh-gra1-0003676293 neutron-server[10199]: ERROR neutron.service     self._load_service_plugins()
  Apr 23 10:02:01.262857 ubuntu-xenial-ovh-gra1-0003676293 neutron-server[10199]: ERROR neutron.service   File "/opt/stack/new/neutron/neutron/manager.py", line 203, in _load_service_plugins
  Apr 23 10:02:01.262969 ubuntu-xenial-ovh-gra1-0003676293 neutron-server[10199]: ERROR neutron.service     provider)
  Apr 23 10:02:01.263140 ubuntu-xenial-ovh-gra1-0003676293 neutron-server[10199]: ERROR neutron.service   File "/opt/stack/new/neutron/neutron/manager.py", line 166, in _get_plugin_instance
  Apr 23 10:02:01.263253 ubuntu-xenial-ovh-gra1-0003676293 neutron-server[10199]: ERROR neutron.service     return plugin_class()
  Apr 23 10:02:01.263351 ubuntu-xenial-ovh-gra1-0003676293 neutron-server[10199]: ERROR neutron.service   File "/opt/stack/new/neutron-lbaas/neutron_lbaas/services/loadbalancer/plugin.py", line 90, in __init__
  Apr 23 10:02:01.263465 ubuntu-xenial-ovh-gra1-0003676293 neutron-server[10199]: ERROR neutron.service     self._load_drivers()
  Apr 23 10:02:01.263574 ubuntu-xenial-ovh-gra1-0003676293 neutron-server[10199]: ERROR neutron.service   File "/opt/stack/new/neutron-lbaas/neutron_lbaas/services/loadbalancer/plugin.py", line 118, in _load_drivers
  Apr 23 10:02:01.263729 ubuntu-xenial-ovh-gra1-0003676293 neutron-server[10199]: ERROR neutron.service     self._check_orphan_loadbalancer_associations(ctx, self.drivers.keys())
  Apr 23 10:02:01.263870 ubuntu-xenial-ovh-gra1-0003676293 neutron-server[10199]: ERROR neutron.service   File "/opt/stack/new/neutron-lbaas/neutron_lbaas/services/loadbalancer/plugin.py", line 127, in _check_orphan_loadbalancer_associations
  Apr 23 10:02:01.264053 ubuntu-xenial-ovh-gra1-0003676293 neutron-server[10199]: ERROR neutron.service     loadbalancers = self.db.get_loadbalancers(context)
  Apr 23 10:02:01.264206 ubuntu-xenial-ovh-gra1-0003676293 neutron-server[10199]: ERROR neutron.service   File "/opt/stack/new/neutron-lbaas/neutron_lbaas/db/loadbalancer/loadbalancer_dbv2.py", line 396, in get_loadbalancers
  Apr 23 10:02:01.264401 ubuntu-xenial-ovh-gra1-0003676293 neutron-server[10199]: ERROR neutron.service     filters=filters)
  Apr 23 10:02:01.264582 ubuntu-xenial-ovh-gra1-0003676293 neutron-server[10199]: ERROR neutron.service   File "/opt/stack/new/neutron-lbaas/neutron_lbaas/db/loadbalancer/loadbalancer_dbv2.py", line 98, in _get_resources
  Apr 23 10:02:01.264809 ubuntu-xenial-ovh-gra1-0003676293 neutron-server[10199]: ERROR neutron.service     filters=filters)
  Apr 23 10:02:01.264967 ubuntu-xenial-ovh-gra1-0003676293 neutron-server[10199]: ERROR neutron.service   File "/opt/stack/new/neutron/neutron/db/common_db_mixin.py", line 82, in _get_collection_query
  Apr 23 10:02:01.265143 ubuntu-xenial-ovh-gra1-0003676293 neutron-server[10199]: ERROR neutron.service     page_reverse)
  Apr 23 10:02:01.265302 ubuntu-xenial-ovh-gra1-0003676293 neutron-server[10199]: ERROR neutron.service   File "/opt/stack/new/neutron/neutron/db/_model_query.py", line 256, in get_collection_query
  Apr 23 10:02:01.265470 ubuntu-xenial-ovh-gra1-0003676293 neutron-server[10199]: ERROR neutron.service     collection = query_with_hooks(context, model)
  Apr 23 10:02:01.265630 ubuntu-xenial-ovh-gra1-0003676293 neutron-server[10199]: ERROR neutron.service   File "/opt/stack/new/neutron/neutron/db/_model_query.py", line 137, in query_with_hooks
  Apr 23 10:02:01.265797 ubuntu-xenial-ovh-gra1-0003676293 neutron-server[10199]: ERROR neutron.service     query = context.session.query(model)
  Apr 23 10:02:01.265909 ubuntu-xenial-ovh-gra1-0003676293 neutron-server[10199]: ERROR neutron.service   File "/usr/local/lib/python2.7/dist-packages/sqlalchemy/orm/session.py", line 1399, in query
  Apr 23 10:02:01.266021 ubuntu-xenial-ovh-gra1-0003676293 neutron-server[10199]: ERROR neutron.service     return self._query_cls(entities, self, **kwargs)
  Apr 23 10:02:01.266157 ubuntu-xenial-ovh-gra1-0003676293 neutron-server[10199]: ERROR neutron.service   File "/usr/local/lib/python2.7/dist-packages/sqlalchemy/orm/query.py", line 141, in __init__
  Apr 23 10:02:01.266295 ubuntu-xenial-ovh-gra1-0003676293 neutron-server[10199]: ERROR neutron.service     self._set_entities(entities)
  Apr 23 10:02:01.266423 ubuntu-xenial-ovh-gra1-0003676293 neutron-server[10199]: ERROR neutron.service   File "/usr/local/lib/python2.7/dist-packages/sqlalchemy/orm/query.py", line 152, in _set_entities
  Apr 23 10:02:01.266553 ubuntu-xenial-ovh-gra1-0003676293 neutron-server[10199]: ERROR neutron.service     self._set_entity_selectables(self._entities)
  Apr 23 10:02:01.266663 ubuntu-xenial-ovh-gra1-0003676293 neutron-server[10199]: ERROR neutron.service   File "/usr/local/lib/python2.7/dist-packages/sqlalchemy/orm/query.py", line 182, in _set_entity_selectables
  Apr 23 10:02:01.266910 ubuntu-xenial-ovh-gra1-0003676293 neutron-server[10199]: ERROR neutron.service     ent.setup_entity(*d[entity])
  Apr 23 10:02:01.267097 ubuntu-xenial-ovh-gra1-0003676293 neutron-server[10199]: ERROR neutron.service   File "/usr/local/lib/python2.7/dist-packages/sqlalchemy/orm/query.py", line 3630, in setup_entity
  Apr 23 10:02:01.267231 ubuntu-xenial-ovh-gra1-0003676293 neutron-server[10199]: ERROR neutron.service     self._with_polymorphic = ext_info.with_polymorphic_mappers
  Apr 23 10:02:01.267363 ubuntu-xenial-ovh-gra1-0003676293 neutron-server[10199]: ERROR neutron.service   File "/usr/local/lib/python2.7/dist-packages/sqlalchemy/util/langhelpers.py", line 767, in __get__
  Apr 23 10:02:01.267535 ubuntu-xenial-ovh-gra1-0003676293 neutron-server[10199]: ERROR neutron.service     obj.__dict__[self.__name__] = result = self.fget(obj)
  Apr 23 10:02:01.267719 ubuntu-xenial-ovh-gra1-0003676293 neutron-server[10199]: ERROR neutron.service   File "/usr/local/lib/python2.7/dist-packages/sqlalchemy/orm/mapper.py", line 2011, in _with_polymorphic_mappers
  Apr 23 10:02:01.267896 ubuntu-xenial-ovh-gra1-0003676293 neutron-server[10199]: ERROR neutron.service     configure_mappers()
  Apr 23 10:02:01.268010 ubuntu-xenial-ovh-gra1-0003676293 neutron-server[10199]: ERROR neutron.service   File "/usr/local/lib/python2.7/dist-packages/sqlalchemy/orm/mapper.py", line 3029, in configure_mappers
  Apr 23 10:02:01.268113 ubuntu-xenial-ovh-gra1-0003676293 neutron-server[10199]: ERROR neutron.service     mapper._post_configure_properties()
  Apr 23 10:02:01.268225 ubuntu-xenial-ovh-gra1-0003676293 neutron-server[10199]: ERROR neutron.service   File "/usr/local/lib/python2.7/dist-packages/sqlalchemy/orm/mapper.py", line 1831, in _post_configure_properties
  Apr 23 10:02:01.268334 ubuntu-xenial-ovh-gra1-0003676293 neutron-server[10199]: ERROR neutron.service     prop.post_instrument_class(self)
  Apr 23 10:02:01.268437 ubuntu-xenial-ovh-gra1-0003676293 neutron-server[10199]: ERROR neutron.service   File "/usr/local/lib/python2.7/dist-packages/sqlalchemy/orm/interfaces.py", line 544, in post_instrument_class
  Apr 23 10:02:01.268557 ubuntu-xenial-ovh-gra1-0003676293 neutron-server[10199]: ERROR neutron.service     self.strategy.init_class_attribute(mapper)
  Apr 23 10:02:01.268670 ubuntu-xenial-ovh-gra1-0003676293 neutron-server[10199]: ERROR neutron.service   File "/usr/local/lib/python2.7/dist-packages/sqlalchemy/orm/strategies.py", line 507, in init_class_attribute
  Apr 23 10:02:01.268782 ubuntu-xenial-ovh-gra1-0003676293 neutron-server[10199]: ERROR neutron.service     active_history=active_history
  Apr 23 10:02:01.268903 ubuntu-xenial-ovh-gra1-0003676293 neutron-server[10199]: ERROR neutron.service   File "/usr/local/lib/python2.7/dist-packages/sqlalchemy/orm/strategies.py", line 106, in _register_attribute
  Apr 23 10:02:01.269005 ubuntu-xenial-ovh-gra1-0003676293 neutron-server[10199]: ERROR neutron.service     **kw
  Apr 23 10:02:01.269124 ubuntu-xenial-ovh-gra1-0003676293 neutron-server[10199]: ERROR neutron.service   File "/usr/local/lib/python2.7/dist-packages/sqlalchemy/orm/attributes.py", line 1524, in register_attribute_impl
  Apr 23 10:02:01.269241 ubuntu-xenial-ovh-gra1-0003676293 neutron-server[10199]: ERROR neutron.service     manager.post_configure_attribute(key)
  Apr 23 10:02:01.269354 ubuntu-xenial-ovh-gra1-0003676293 neutron-server[10199]: ERROR neutron.service   File "/usr/local/lib/python2.7/dist-packages/sqlalchemy/orm/instrumentation.py", line 278, in post_configure_attribute
  Apr 23 10:02:01.269448 ubuntu-xenial-ovh-gra1-0003676293 neutron-server[10199]: ERROR neutron.service     attribute_instrument(self.class_, key, self[key])
  Apr 23 10:02:01.269540 ubuntu-xenial-ovh-gra1-0003676293 neutron-server[10199]: ERROR neutron.service   File "/usr/local/lib/python2.7/dist-packages/sqlalchemy/event/attr.py", line 284, in __call__
  Apr 23 10:02:01.269653 ubuntu-xenial-ovh-gra1-0003676293 neutron-server[10199]: ERROR neutron.service     fn(*args, **kw)
  Apr 23 10:02:01.269765 ubuntu-xenial-ovh-gra1-0003676293 neutron-server[10199]: ERROR neutron.service   File "/usr/local/lib/python2.7/dist-packages/sqlalchemy/orm/events.py", line 71, in listen
  Apr 23 10:02:01.269872 ubuntu-xenial-ovh-gra1-0003676293 neutron-server[10199]: ERROR neutron.service     return fn(target_cls, *arg)
  Apr 23 10:02:01.269978 ubuntu-xenial-ovh-gra1-0003676293 neutron-server[10199]: ERROR neutron.service   File "/opt/stack/new/neutron/neutron/db/api.py", line 403, in _listen_for_changes
  Apr 23 10:02:01.270085 ubuntu-xenial-ovh-gra1-0003676293 neutron-server[10199]: ERROR neutron.service     remote_mapper.add_property(name, backref_prop)
  Apr 23 10:02:01.270217 ubuntu-xenial-ovh-gra1-0003676293 neutron-server[10199]: ERROR neutron.service   File "/usr/local/lib/python2.7/dist-packages/sqlalchemy/orm/mapper.py", line 1854, in add_property
  Apr 23 10:02:01.270321 ubuntu-xenial-ovh-gra1-0003676293 neutron-server[10199]: ERROR neutron.service     self._configure_property(key, prop, init=self.configured)
  Apr 23 10:02:01.270425 ubuntu-xenial-ovh-gra1-0003676293 neutron-server[10199]: ERROR neutron.service   File "/usr/local/lib/python2.7/dist-packages/sqlalchemy/orm/mapper.py", line 1731, in _configure_property
  Apr 23 10:02:01.270528 ubuntu-xenial-ovh-gra1-0003676293 neutron-server[10199]: ERROR neutron.service     prop.init()
  Apr 23 10:02:01.270648 ubuntu-xenial-ovh-gra1-0003676293 neutron-server[10199]: ERROR neutron.service   File "/usr/local/lib/python2.7/dist-packages/sqlalchemy/orm/interfaces.py", line 184, in init
  Apr 23 10:02:01.270788 ubuntu-xenial-ovh-gra1-0003676293 neutron-server[10199]: ERROR neutron.service     self.do_init()
  Apr 23 10:02:01.270897 ubuntu-xenial-ovh-gra1-0003676293 neutron-server[10199]: ERROR neutron.service   File "/usr/local/lib/python2.7/dist-packages/sqlalchemy/orm/relationships.py", line 1656, in do_init
  Apr 23 10:02:01.271003 ubuntu-xenial-ovh-gra1-0003676293 neutron-server[10199]: ERROR neutron.service     self._setup_join_conditions()
  Apr 23 10:02:01.271168 ubuntu-xenial-ovh-gra1-0003676293 neutron-server[10199]: ERROR neutron.service   File "/usr/local/lib/python2.7/dist-packages/sqlalchemy/orm/relationships.py", line 1731, in _setup_join_conditions
  Apr 23 10:02:01.271292 ubuntu-xenial-ovh-gra1-0003676293 neutron-server[10199]: ERROR neutron.service     can_be_synced_fn=self._columns_are_mapped
  Apr 23 10:02:01.271396 ubuntu-xenial-ovh-gra1-0003676293 neutron-server[10199]: ERROR neutron.service   File "/usr/local/lib/python2.7/dist-packages/sqlalchemy/orm/relationships.py", line 1998, in __init__
  Apr 23 10:02:01.271510 ubuntu-xenial-ovh-gra1-0003676293 neutron-server[10199]: ERROR neutron.service     self._determine_joins()
  Apr 23 10:02:01.271630 ubuntu-xenial-ovh-gra1-0003676293 neutron-server[10199]: ERROR neutron.service   File "/usr/local/lib/python2.7/dist-packages/sqlalchemy/orm/relationships.py", line 2103, in _determine_joins
  Apr 23 10:02:01.271736 ubuntu-xenial-ovh-gra1-0003676293 neutron-server[10199]: ERROR neutron.service     "specify a 'primaryjoin' expression." % self.prop)
  Apr 23 10:02:01.271853 ubuntu-xenial-ovh-gra1-0003676293 neutron-server[10199]: ERROR neutron.service NoForeignKeysError: Could not determine join condition between parent/child tables on relationship ProviderResourceAssociation._provider_backref - there are no foreign keys linking these tables.  Ensure that referencing columns are associated with a ForeignKey or ForeignKeyConstraint, or specify a 'primaryjoin' expression.

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