GAE：remote_api 和应用程序默认凭据答案

【问题标题】：GAE: remote_api and Application Default CredentialsGAE：remote_api 和应用程序默认凭据
【发布时间】：2015-09-14 14:27:41
【问题描述】：

从今天开始，我一直在使用remote_api (python) 来访问 GAE 上的数据存储区。

我通常是remote_api_shell.py -s <mydomain>。

今天试了，失败了，错误是：

oauth2client.client.ApplicationDefaultCredentialsError：应用程序默认凭据不可用。它们可用如果在 Google Compute Engine 中运行。否则，环境变量 GOOGLE_APPLICATION_CREDENTIALS 必须定义为指向定义凭据的文件。看 https://developers.google.com/accounts/docs/application-default-credentials 了解更多信息。

我不明白它为什么会这样问我。

wole 输出是这样的

stefano@~/gc$ remote_api_shell.py -s ....
Traceback (most recent call last):
  File "/usr/local/bin/remote_api_shell.py", line 133, in <module>
    run_file(__file__, globals())
  File "/usr/local/bin/remote_api_shell.py", line 129, in run_file
    execfile(_PATHS.script_file(script_name), globals_)
  File "/Applications/GoogleAppEngineLauncher.app/Contents/Resources/GoogleAppEngine-default.bundle/Contents/Resources/google_appengine/google/appengine/tools/remote_api_shell.py", line 157, in <module>
    main(sys.argv)
  File "/Applications/GoogleAppEngineLauncher.app/Contents/Resources/GoogleAppEngine-default.bundle/Contents/Resources/google_appengine/google/appengine/tools/remote_api_shell.py", line 153, in main
    appengine_rpc.HttpRpcServer)
  File "/Applications/GoogleAppEngineLauncher.app/Contents/Resources/GoogleAppEngine-default.bundle/Contents/Resources/google_appengine/google/appengine/tools/remote_api_shell.py", line 74, in remote_api_shell
    secure=secure)
  File "/Applications/GoogleAppEngineLauncher.app/Contents/Resources/GoogleAppEngine-default.bundle/Contents/Resources/google_appengine/google/appengine/ext/remote_api/remote_api_stub.py", line 734, in ConfigureRemoteApiForOAuth
    credentials = client.GoogleCredentials.get_application_default()
  File "/Applications/GoogleAppEngineLauncher.app/Contents/Resources/GoogleAppEngine-default.bundle/Contents/Resources/google_appengine/lib/oauth2client/oauth2client/client.py", line 1204, in get_application_default
    return GoogleCredentials._get_implicit_credentials()
  File "/Applications/GoogleAppEngineLauncher.app/Contents/Resources/GoogleAppEngine-default.bundle/Contents/Resources/google_appengine/lib/oauth2client/oauth2client/client.py", line 1194, in _get_implicit_credentials
    raise ApplicationDefaultCredentialsError(ADC_HELP_MSG)
oauth2client.client.ApplicationDefaultCredentialsError: The Application Default Credentials are not available. They are available if running in Google Compute Engine. Otherwise, the environment variable GOOGLE_APPLICATION_CREDENTIALS must be defined pointing to a file defining the credentials. See https://developers.google.com/accounts/docs/application-default-credentials for more information.

【问题讨论】：

标签： python google-app-engine google-cloud-datastore

【解决方案1】：

解决方案是在 shell 中运行gcloud auth login 并再次授予授权

【讨论】：

我一直在使用谷歌应用引擎，但从未安装过 gcloud。有没有其他方法可以做到这一点？

【解决方案2】：

转到 API Manager>>Credentials 下的 Developers Console（当前位于 https://console.developers.google.com/apis/credentials?project=<<<Your App Id>>>）。
单击服务帐户，然后单击标有“生成新 JSON 密钥”的按钮。
将下载一个文件，将其保存在安全的地方。
将环境变量 GOOGLE_APPLICATION_CREDENTIALS 设置为指向您在运行 remote_api_shell.py 之前保存的文件

【讨论】：