return view_func(*args, **kwargs)
  File "/usr/lib/python2.7/dist-packages/rest_framework/views.py", line 399, in dispatch
    response = self.handle_exception(exc)
  File "/usr/lib/python2.7/dist-packages/rest_framework/views.py", line 396, in dispatch
    response = handler(request, *args, **kwargs)
  File "/opt/OpenvStorage/webapps/api/backend/decorators.py", line 461, in new_function
    return_value = f(*args, **kwargs)
  File "/opt/OpenvStorage/webapps/api/backend/decorators.py", line 79, in new_function
    return f(*args, **kw)
  File "/opt/OpenvStorage/webapps/api/backend/decorators.py", line 322, in new_function
    return Response(FullSerializer(object_type, contents=contents, instance=obj).data, status=status.HTTP_200_OK)
  File "/usr/lib/python2.7/dist-packages/rest_framework/serializers.py", line 573, in data
    self._data = self.to_native(obj)
  File "/usr/lib/python2.7/dist-packages/rest_framework/serializers.py", line 349, in to_native
    value = field.field_to_native(obj, field_name)
  File "/usr/lib/python2.7/dist-packages/rest_framework/fields.py", line 198, in field_to_native
    value = get_component(value, component)
  File "/usr/lib/python2.7/dist-packages/rest_framework/fields.py", line 56, in get_component
    val = getattr(obj, attr_name)
  File "/opt/OpenvStorage/ovs/dal/dataobject.py", line 341, in <lambda>
    fget = lambda s: s._get_dynamic_property(dynamic)
  File "/opt/OpenvStorage/ovs/dal/dataobject.py", line 410, in _get_dynamic_property
    return self._backend_property(data_loader, dynamic)
  File "/opt/OpenvStorage/ovs/dal/dataobject.py", line 904, in _backend_property
    dynamic_data = function()
  File "/opt/OpenvStorage/ovs/dal/hybrids/albabackend.py", line 151, in _local_stack
    for asd_id, stats in self.asd_statistics.iteritems():
  File "/opt/OpenvStorage/ovs/dal/dataobject.py", line 341, in <lambda>
    fget = lambda s: s._get_dynamic_property(dynamic)
  File "/opt/OpenvStorage/ovs/dal/dataobject.py", line 410, in _get_dynamic_property
    return self._backend_property(data_loader, dynamic)
  File "/opt/OpenvStorage/ovs/dal/dataobject.py", line 904, in _backend_property
    dynamic_data = function()
  File "/opt/OpenvStorage/ovs/dal/hybrids/albabackend.py", line 378, in _asd_statistics
    config = Configuration.get_configuration_path('/ovs/arakoon/{0}/config'.format(self.abm_services[0].service.name))
  File "/opt/OpenvStorage/ovs/extensions/generic/configuration.py", line 101, in get_configuration_path
    key=key)
  File "/opt/OpenvStorage/ovs/extensions/generic/configuration.py", line 404, in _passthrough
    return getattr(ArakoonConfiguration, method)(*args, **kwargs)
  File "/opt/OpenvStorage/ovs/extensions/db/arakoon/configuration.py", line 71, in get_configuration_path
    config.load_config('127.0.0.1')
  File "/opt/OpenvStorage/ovs/extensions/db/arakoon/ArakoonInstaller.py", line 123, in load_config
    client = self._load_client(ip)
  File "/opt/OpenvStorage/ovs/extensions/db/arakoon/ArakoonInstaller.py", line 114, in _load_client
    return SSHClient(ip, username=ArakoonInstaller.SSHCLIENT_USER)
  File "/opt/OpenvStorage/ovs/extensions/generic/sshclient.py", line 150, in __init__
    self._connect()
  File "/opt/OpenvStorage/ovs/extensions/generic/sshclient.py", line 171, in _connect
    self._client.connect(self.ip, username=self.username, password=self.password)
  File "/usr/lib/python2.7/dist-packages/paramiko/client.py", line 337, in connect
    self._auth(username, password, pkey, key_filenames, allow_agent, look_for_keys)
  File "/usr/lib/python2.7/dist-packages/paramiko/client.py", line 528, in _auth
    raise saved_exception
AuthenticationException: Authentication failed.