Failed to get metadata for VM

2015-06-20 01:45:36.135 3275 INFO neutron.wsgi [-] (3275) accepted ('11.0.0.6', 49583)
2015-06-20 01:45:36.136 3275 ERROR neutron.agent.metadata.namespace_proxy [-] Unexpected error.
2015-06-20 01:45:36.136 3275 TRACE neutron.agent.metadata.namespace_proxy Traceback (most recent call last):
2015-06-20 01:45:36.136 3275 TRACE neutron.agent.metadata.namespace_proxy   File "/usr/lib/python2.7/dist-packages/neutron/agent/metadata/namespace_proxy.py", line 72, in __call__
2015-06-20 01:45:36.136 3275 TRACE neutron.agent.metadata.namespace_proxy     req.body)
2015-06-20 01:45:36.136 3275 TRACE neutron.agent.metadata.namespace_proxy   File "/usr/lib/python2.7/dist-packages/neutron/agent/metadata/namespace_proxy.py", line 103, in _proxy_request
2015-06-20 01:45:36.136 3275 TRACE neutron.agent.metadata.namespace_proxy     connection_type=UnixDomainHTTPConnection)
2015-06-20 01:45:36.136 3275 TRACE neutron.agent.metadata.namespace_proxy   File "/usr/lib/python2.7/dist-packages/httplib2/__init__.py", line 1569, in request
2015-06-20 01:45:36.136 3275 TRACE neutron.agent.metadata.namespace_proxy     (response, content) = self._request(conn, authority, uri, request_uri, method, body, headers, redirections, cachekey)
2015-06-20 01:45:36.136 3275 TRACE neutron.agent.metadata.namespace_proxy   File "/usr/lib/python2.7/dist-packages/httplib2/__init__.py", line 1316, in _request
2015-06-20 01:45:36.136 3275 TRACE neutron.agent.metadata.namespace_proxy     (response, content) = self._conn_request(conn, request_uri, method, body, headers)
2015-06-20 01:45:36.136 3275 TRACE neutron.agent.metadata.namespace_proxy   File "/usr/lib/python2.7/dist-packages/httplib2/__init__.py", line 1251, in _conn_request
2015-06-20 01:45:36.136 3275 TRACE neutron.agent.metadata.namespace_proxy     conn.connect()
2015-06-20 01:45:36.136 3275 TRACE neutron.agent.metadata.namespace_proxy   File "/usr/lib/python2.7/dist-packages/neutron/agent/metadata/namespace_proxy.py", line 46, in connect
2015-06-20 01:45:36.136 3275 TRACE neutron.agent.metadata.namespace_proxy     self.sock.connect(cfg.CONF.metadata_proxy_socket)
2015-06-20 01:45:36.136 3275 TRACE neutron.agent.metadata.namespace_proxy   File "/usr/local/lib/python2.7/dist-packages/eventlet/greenio/base.py", line 235, in connect
2015-06-20 01:45:36.136 3275 TRACE neutron.agent.metadata.namespace_proxy     while not socket_connect(fd, address):
2015-06-20 01:45:36.136 3275 TRACE neutron.agent.metadata.namespace_proxy   File "/usr/local/lib/python2.7/dist-packages/eventlet/greenio/base.py", line 37, in socket_connect
2015-06-20 01:45:36.136 3275 TRACE neutron.agent.metadata.namespace_proxy     raise socket.error(err, errno.errorcode[err])
2015-06-20 01:45:36.136 3275 TRACE neutron.agent.metadata.namespace_proxy error: [Errno 111] ECONNREFUSED
2015-06-20 01:45:36.136 3275 TRACE neutron.agent.metadata.namespace_proxy
2015-06-20 01:45:36.138 3275 INFO neutron.wsgi [-] 11.0.0.6 - - [20/Jun/2015 01:45:36] "GET /2009-04-04/meta-data/instance-id HTTP/1.1" 500 343 0.002100