在Android Test Station中使用时，Cloud Datastore Emulator返回503“服务不可用”

如何解决在Android Test Station中使用时，Cloud Datastore Emulator返回503“服务不可用”

我正在尝试使用Android Test Station。我下载了Android Test Station CLI并运行了./mtt start，但是没有启动UI。然后，我运行docker exec -it mtt cat /data/log/server/current将日志获取到docker之外。这是日志

[2020-08-12 17:34:13 +0800] [721] [INFO] Listening at: http://0.0.0.0:8086 (721)
[2020-08-12 17:34:13 +0800] [721] [INFO] Using worker: sync
[2020-08-12 17:34:13 +0800] [736] [INFO] Booting worker with pid: 736
/usr/local/lib/python3.6/dist-packages/unicategories_tools/cache.py:37: UserWarning: Unicode unicategories database is outdated. Please reinstall unicategories module to regenerate it.
  'Incompatible unicategories database. '
 * Running on http://0.0.0.0:8085/ (Press CTRL+C to quit)
WARNING:root:/usr/lib/google-cloud-sdk/platform/google_appengine/lib/cacerts/urlfetch_cacerts.txt missing; without this urlfetch will not be able to validate SSL certificates.
INFO:root:Skipping SDK update check.
WARNING:root:An exception has been encountered when attempting to use Application Default Credentials: File /tmp/keyfile/key.json (pointed by GOOGLE_APPLICATION_CREDENTIALS environment variable) does not exist!. Falling back on dummy AppIdentityServiceStub.
INFO:root:Starting Cloud Datastore emulator at: http://localhost:8087
Exception in thread Thread-1:
Traceback (most recent call last):
  File "/usr/lib/python2.7/threading.py",line 801,in __bootstrap_inner
    self.run()
  File "/usr/lib/python2.7/threading.py",line 754,in run
    self.__target(*self.__args,**self.__kwargs)
  File "/usr/lib/google-cloud-sdk/platform/google_appengine/google/appengine/tools/devappserver2/api_server.py",line 502,in _launch
    else 'SCATTERED'))
  File "/usr/lib/google-cloud-sdk/platform/google_appengine/google/appengine/tools/devappserver2/cloud_emulators/cloud_emulator_manager.py",line 123,in Launch
    emulator_cmd=self._cmd,start_options=options,silent=silent)
  File "/usr/lib/google-cloud-sdk/platform/google_appengine/google/appengine/tools/devappserver2/cloud_emulators/datastore/datastore_emulator.py",line 134,in __init__
    if not self._WaitForStartup(deadline):
  File "/usr/lib/google-cloud-sdk/platform/google_appengine/google/appengine/tools/devappserver2/cloud_emulators/datastore/datastore_emulator.py",line 158,in _WaitForStartup
    response,_ = self._http.request(self._host)
  File "/usr/lib/google-cloud-sdk/platform/google_appengine/lib/httplib2/httplib2/__init__.py",line 1626,in request
    (response,content) = self._request(conn,authority,uri,request_uri,method,body,headers,redirections,cachekey)
  File "/usr/lib/google-cloud-sdk/platform/google_appengine/lib/httplib2/httplib2/__init__.py",line 1368,in _request
    (response,content) = self._conn_request(conn,headers)
  File "/usr/lib/google-cloud-sdk/platform/google_appengine/lib/httplib2/httplib2/__init__.py",line 1288,in _conn_request
    conn.connect()
  File "/usr/lib/google-cloud-sdk/platform/google_appengine/lib/httplib2/httplib2/__init__.py",line 938,in connect
    self.sock.connect((self.host,self.port) + sa[2:])
  File "/usr/lib/google-cloud-sdk/platform/google_appengine/lib/httplib2/httplib2/socks.py",line 415,in connect
    self.__negotiatehttp(destpair[0],destpair[1])
  File "/usr/lib/google-cloud-sdk/platform/google_appengine/lib/httplib2/httplib2/socks.py",line 381,in __negotiatehttp
    raise HTTPError((statuscode,statusline[2]))
HTTPError: (503,'Service Unavailable')

INFO:root:Starting API server at: http://127.0.0.1:8083
INFO:root:Starting gRPC API server at: http://localhost:44289
INFO:root:Applying all pending transactions and saving the datastore
INFO:root:Saving search indexes

似乎Cloud Datastore Emulator返回503“服务不可用”。 但是我确定Cloud Datastore Emulator正在通过top命令运行。

在python脚本中添加一些日志，我得到启动Cloud Datastore Emulator的命令，

'/usr/lib/google-cloud-sdk/platform/cloud-datastore-emulator/cloud_datastore_emulator','start','--testing','--regenerate_indexes=false','--auto_id_policy=SCATTERED','--port=8007','--store_on_disk=true','--store_index_configuration_on_disk=true','--index_file=/mtt/index.yaml','--storage_file=/tmp/mtt/datastore.db','--require_indexes','/tmp/tmpwvDVWT'。

此命令是否有问题？谁能说出为什么出现503错误？

解决方法

更新：

我找到了原因。我在.docker / config.json中添加了no_proxy设置，它可以正常工作！ 如果您有类似的问题，只需将noProxy设置为“ localhost，127.0.0.1，metadata.google.internal”即可解决。