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[Li Xiao <1697874@xxxxxxxxxxxxxxxxxx>]

Public bug reported:

After I installed openstack with devstack,
Execute in the neutron-vpnaas directory
Tox -e dsvm-functional
The results are as follows:
======
Totals
======
Ran: 28 tests in 8.0000 sec.
 - Passed: 0
 - Skipped: 7
 - Expected Fail: 0
 - Unexpected Success: 0
 - Failed: 21
Sum of execute time for each test: 13.4665 sec.


Some error info：

Traceback (most recent call last):
      File "/opt/stack/neutron/neutron/tests/functional/db/test_migrations.py", line 136, in setUp
        super(_TestModelsMigrations, self).setUp()
      File "/opt/stack/neutron/neutron/tests/unit/testlib_api.py", line 289, in setUp
        self._setup_database_fixtures()
      File "/opt/stack/neutron/neutron/tests/unit/testlib_api.py", line 326, in _setup_database_fixtures
        self.fail(msg)
      File "/usr/lib/python2.7/site-packages/unittest2/case.py", line 690, in fail
        raise self.failureException(msg)
    AssertionError: backend 'postgresql' unavailable
    
  Traceback (most recent call last):
      File "/opt/stack/neutron/neutron/tests/functional/db/test_migrations.py", line 136, in setUp
        super(_TestModelsMigrations, self).setUp()
      File "/opt/stack/neutron/neutron/tests/unit/testlib_api.py", line 289, in setUp
        self._setup_database_fixtures()
      File "/opt/stack/neutron/neutron/tests/unit/testlib_api.py", line 326, in _setup_database_fixtures
        self.fail(msg)
      File "/usr/lib/python2.7/site-packages/unittest2/case.py", line 690, in fail
        raise self.failureException(msg)
    AssertionError: backend 'mysql' unavailable


 Traceback (most recent call last):
      File "/usr/lib/python2.7/site-packages/fixtures/fixture.py", line 197, in setUp
        self._setUp()
      File "/opt/stack/neutron/neutron/tests/common/net_helpers.py", line 718, in _setUp
        ovs = ovs_lib.BaseOVS()
      File "/opt/stack/neutron/neutron/agent/common/ovs_lib.py", line 109, in __init__
        self.ovsdb = ovsdb_api.from_config(self)
      File "/opt/stack/neutron/neutron/agent/ovsdb/api.py", line 57, in from_config
        return iface.api_factory(context)
      File "/opt/stack/neutron/neutron/agent/ovsdb/impl_idl.py", line 46, in api_factory
        idl=connection.idl_factory(),
      File "/opt/stack/neutron/neutron/agent/ovsdb/native/connection.py", line 43, in idl_factory
        helper = do_get_schema_helper()
      File "/usr/lib/python2.7/site-packages/tenacity/__init__.py", line 87, in wrapped_f
        return r.call(f, *args, **kw)
      File "/usr/lib/python2.7/site-packages/tenacity/__init__.py", line 235, in call
        do = self.iter(result=result, exc_info=exc_info)
      File "/usr/lib/python2.7/site-packages/tenacity/__init__.py", line 205, in iter
        raise RetryError(fut).reraise()
      File "/usr/lib/python2.7/site-packages/tenacity/__init__.py", line 284, in reraise
        raise self.last_attempt.result()
      File "/usr/lib/python2.7/site-packages/concurrent/futures/_base.py", line 422, in result
        return self.__get_result()
      File "/usr/lib/python2.7/site-packages/tenacity/__init__.py", line 238, in call
        result = fn(*args, **kwargs)
      File "/opt/stack/neutron/neutron/agent/ovsdb/native/connection.py", line 41, in do_get_schema_helper
        return idlutils.get_schema_helper(conn, schema_name)
      File "/usr/lib/python2.7/site-packages/ovsdbapp/backend/ovs_idl/idlutils.py", line 128, in get_schema_helper
        'err': os.strerror(err)})
    Exception: Could not retrieve schema from tcp:127.0.0.1:6640: Connection refused

Why does this happen?  What should I do?

** Affects: neutron
     Importance: Undecided
         Status: New


** Tags: vpnaas

** Tags added: vpnaas

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https://bugs.launchpad.net/bugs/1697874

Title:
  neutron-vpnaas failed to execute tox -e dsvm-functional

Status in neutron:
  New

Bug description:
  After I installed openstack with devstack,
  Execute in the neutron-vpnaas directory
  Tox -e dsvm-functional
  The results are as follows:
  ======
  Totals
  ======
  Ran: 28 tests in 8.0000 sec.
   - Passed: 0
   - Skipped: 7
   - Expected Fail: 0
   - Unexpected Success: 0
   - Failed: 21
  Sum of execute time for each test: 13.4665 sec.

  
  Some error info：

  Traceback (most recent call last):
        File "/opt/stack/neutron/neutron/tests/functional/db/test_migrations.py", line 136, in setUp
          super(_TestModelsMigrations, self).setUp()
        File "/opt/stack/neutron/neutron/tests/unit/testlib_api.py", line 289, in setUp
          self._setup_database_fixtures()
        File "/opt/stack/neutron/neutron/tests/unit/testlib_api.py", line 326, in _setup_database_fixtures
          self.fail(msg)
        File "/usr/lib/python2.7/site-packages/unittest2/case.py", line 690, in fail
          raise self.failureException(msg)
      AssertionError: backend 'postgresql' unavailable
      
    Traceback (most recent call last):
        File "/opt/stack/neutron/neutron/tests/functional/db/test_migrations.py", line 136, in setUp
          super(_TestModelsMigrations, self).setUp()
        File "/opt/stack/neutron/neutron/tests/unit/testlib_api.py", line 289, in setUp
          self._setup_database_fixtures()
        File "/opt/stack/neutron/neutron/tests/unit/testlib_api.py", line 326, in _setup_database_fixtures
          self.fail(msg)
        File "/usr/lib/python2.7/site-packages/unittest2/case.py", line 690, in fail
          raise self.failureException(msg)
      AssertionError: backend 'mysql' unavailable

  
   Traceback (most recent call last):
        File "/usr/lib/python2.7/site-packages/fixtures/fixture.py", line 197, in setUp
          self._setUp()
        File "/opt/stack/neutron/neutron/tests/common/net_helpers.py", line 718, in _setUp
          ovs = ovs_lib.BaseOVS()
        File "/opt/stack/neutron/neutron/agent/common/ovs_lib.py", line 109, in __init__
          self.ovsdb = ovsdb_api.from_config(self)
        File "/opt/stack/neutron/neutron/agent/ovsdb/api.py", line 57, in from_config
          return iface.api_factory(context)
        File "/opt/stack/neutron/neutron/agent/ovsdb/impl_idl.py", line 46, in api_factory
          idl=connection.idl_factory(),
        File "/opt/stack/neutron/neutron/agent/ovsdb/native/connection.py", line 43, in idl_factory
          helper = do_get_schema_helper()
        File "/usr/lib/python2.7/site-packages/tenacity/__init__.py", line 87, in wrapped_f
          return r.call(f, *args, **kw)
        File "/usr/lib/python2.7/site-packages/tenacity/__init__.py", line 235, in call
          do = self.iter(result=result, exc_info=exc_info)
        File "/usr/lib/python2.7/site-packages/tenacity/__init__.py", line 205, in iter
          raise RetryError(fut).reraise()
        File "/usr/lib/python2.7/site-packages/tenacity/__init__.py", line 284, in reraise
          raise self.last_attempt.result()
        File "/usr/lib/python2.7/site-packages/concurrent/futures/_base.py", line 422, in result
          return self.__get_result()
        File "/usr/lib/python2.7/site-packages/tenacity/__init__.py", line 238, in call
          result = fn(*args, **kwargs)
        File "/opt/stack/neutron/neutron/agent/ovsdb/native/connection.py", line 41, in do_get_schema_helper
          return idlutils.get_schema_helper(conn, schema_name)
        File "/usr/lib/python2.7/site-packages/ovsdbapp/backend/ovs_idl/idlutils.py", line 128, in get_schema_helper
          'err': os.strerror(err)})
      Exception: Could not retrieve schema from tcp:127.0.0.1:6640: Connection refused

  Why does this happen?  What should I do?

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