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{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"Intermittent Cloud Datastore Error: Unauthorized: 401 ... Unable to find the server at accounts.google.com","articleBody":"I am getting regular, but intermittent errors when using GCL to read from the datastore. The stacktrace is below. I am running Python 2.7 on Ubuntu. \r\n\r\nI get this error only occasionally when I call the `get_multi` function. It is intermittent and looks like it could be a network error based on the very last line (`Unable to find the server at accounts.google.com.`). I am making thousands of calls to the datastore, and while this occurs only a small percent of the time, it occurs with pretty heavy regularity (about once a minute).\r\n\r\n```\r\n File \"/home/speedplane/DA/djangoappengine/db_gcl/compiler.py\", line 349, in get_matching_pk\r\n    self.client.get_multi(self.included_pks, **config)\r\n  File \"/usr/local/lib/python2.7/dist-packages/google/cloud/datastore/client.py\", line 307, in get_multi\r\n    transaction_id=transaction and transaction.id,\r\n  File \"/usr/local/lib/python2.7/dist-packages/google/cloud/datastore/client.py\", line 124, in _extended_lookup\r\n    transaction_id=transaction_id,\r\n  File \"/usr/local/lib/python2.7/dist-packages/google/cloud/datastore/_http.py\", line 519, in lookup\r\n    lookup_response = self._datastore_api.lookup(project, lookup_request)\r\n  File \"/usr/local/lib/python2.7/dist-packages/google/cloud/datastore/_http.py\", line 304, in lookup\r\n    return self._stub.Lookup(request_pb)\r\n  File \"/usr/lib/python2.7/contextlib.py\", line 35, in __exit__\r\n    self.gen.throw(type, value, traceback)\r\n  File \"/usr/local/lib/python2.7/dist-packages/google/cloud/datastore/_http.py\", line 260, in _grpc_catch_rendezvous\r\n    raise error_class(exc.details())\r\nUnauthorized: 401 Traceback (most recent call last):.  File \"src/python/grpcio/grpc/_cython/_cygrpc/credentials.pyx.pxi\", line 154, in grpc._cython.cygrpc.plugin_get_metadata (src/python/grpcio/grpc/_cython/cygrpc.c:6918).  File \"/usr/local/lib/python2.7/dist-packages/grpc/_plugin_wrapping.py\", line 107, in __call__.    AuthMetadataPluginCallback(wrapped_cygrpc_callback)).  File \"/usr/local/lib/python2.7/dist-packages/google/auth/transport/grpc.py\", line 65, in __call__.    callback(self._get_authorization_headers(), None).  File \"/usr/local/lib/python2.7/dist-packages/google/auth/transport/grpc.py\", line 51, in _get_authorization_headers.    self._credentials.refresh(self._request).  File \"/usr/local/lib/python2.7/dist-packages/google/oauth2/service_account.py\", line 313, in refresh.    request, self._token_uri, assertion).  File \"/usr/local/lib/python2.7/dist-packages/google/oauth2/_client.py\", line 143, in jwt_grant.    response_data = _token_endpoint_request(request, token_uri, body).  File \"/usr/local/lib/python2.7/dist-packages/google/oauth2/_client.py\", line 104, in _token_endpoint_request.    method='POST', url=token_uri, headers=headers, body=body).  File \"/usr/local/lib/python2.7/dist-packages/google_auth_httplib2.py\", line 119, in __call__.    raise exceptions.TransportError(exc).TransportError: Unable to find the server at accounts.google.com.\r\n```\r\n\r\nThat last line in the stacktrace above has its own stacktrace built-in. I've expanded it below for ease of reading:\r\n\r\n```\r\nUnauthorized: 401 Traceback (most recent call last):.\r\n  File \"src/python/grpcio/grpc/_cython/_cygrpc/credentials.pyx.pxi\", line 154, in grpc._cython.cygrpc.plugin_get_metadata (src/python/grpcio/grpc/_cython/cygrpc.c:6918).\r\n  File \"/usr/local/lib/python2.7/dist-packages/grpc/_plugin_wrapping.py\", line 107, in __call__.\r\n    AuthMetadataPluginCallback(wrapped_cygrpc_callback)).\r\n  File \"/usr/local/lib/python2.7/dist-packages/google/auth/transport/grpc.py\", line 65, in __call__.\r\n    callback(self._get_authorization_headers(), None).\r\n  File \"/usr/local/lib/python2.7/dist-packages/google/auth/transport/grpc.py\", line 51, in _get_authorization_headers.\r\n    self._credentials.refresh(self._request).\r\n  File \"/usr/local/lib/python2.7/dist-packages/google/oauth2/service_account.py\", line 313, in refresh.\r\n    request, self._token_uri, assertion).\r\n  File \"/usr/local/lib/python2.7/dist-packages/google/oauth2/_client.py\", line 143, in jwt_grant.\r\n    response_data = _token_endpoint_request(request, token_uri, body).\r\n  File \"/usr/local/lib/python2.7/dist-packages/google/oauth2/_client.py\", line 104, in _token_endpoint_request.\r\n    method='POST', url=token_uri, headers=headers, body=body).\r\n  File \"/usr/local/lib/python2.7/dist-packages/google_auth_httplib2.py\", line 119, in __call__.\r\n    raise exceptions.TransportError(exc).TransportError: Unable to find the server at accounts.google.com.\r\n```\r\n\r\nI am running this within a Docker container orchestrated by Kubernetes. My Dockerfile inherits from `ubuntu:trusty`. Below is version information:\r\n```\r\n# lsb_release\r\nLSB Version:    core-2.0-amd64:core-2.0-noarch:core-3.0-amd64:core-3.0-noarch:core-3.1-amd64:core-3.1-noarch:core-3.2-amd64:core-3.2-noarch:core-4.0-amd64:core-4.0-noarch:core-4.1-amd64:core-4.1-noarch:security-4.0-amd64:security-4.0-noarch:security-4.1-amd64:security-4.1-noarch\r\n# python --version\r\nPython 2.7.6\r\n```","author":{"url":"https://github.com/speedplane","@type":"Person","name":"speedplane"},"datePublished":"2017-03-01T00:54:43.000Z","interactionStatistic":{"@type":"InteractionCounter","interactionType":"https://schema.org/CommentAction","userInteractionCount":7},"url":"https://github.com/3085/google-cloud-python/issues/3085"}