问题描述
我关注了this Vertex AI tutorial。但是，在最后一步，当 Cloud Function 调用预测端点时，它会失败。
这意味着它甚至无法访问元数据服务器。即，不是权限失败（尽管我确实检查了 myproject@appspot.gserviceaccount.com 服务帐户确实具有指定的项目编辑器角色）。严格来说，这也是函数和 IAM 中的错误，而不是 Vertex.AI 或其他 ML 系统中的错误。
这里出了什么问题？
Function execution took 673 ms,finished with status code: 500
Prediction request Failed: <class 'google.api_core.exceptions.ServiceUnavailable'>: 503 Getting Metadata from plugin Failed with error: ("Failed to retrieve http://Metadata.google.internal/computeMetadata/v1/instance/service-accounts/myproject@appspot.gserviceaccount.com/token?scopes=https%3A%2F%2Fwww.googleapis.com%2Fauth%2Fcloud-platform from the Google Compute EngineMetadata service. Status: 500 Response:\nb'Could not fetch URI /computeMetadata/v1/instance/service-accounts/myproject@appspot.gserviceaccount.com/token?scopes=https%3A%2F%2Fwww.googleapis.com%2Fauth%2Fcloud-platform\\n'",<google.auth.transport.requests._Response object at 0x3e095a9f4c50>)
google.auth.exceptions.RefreshError: ("Failed to retrieve http://Metadata.google.internal/computeMetadata/v1/instance/service-accounts/myproject@appspot.gserviceaccount.com/token?scopes=https%3A%2F%2Fwww.googleapis.com%2Fauth%2Fcloud-platform from the Google Compute EngineMetadata service. Status: 500 Response:\nb'Could not fetch URI /computeMetadata/v1/instance/service-accounts/myproject@appspot.gserviceaccount.com/token?scopes=https%3A%2F%2Fwww.googleapis.com%2Fauth%2Fcloud-platform\\n'",<google.auth.transport.requests._Response object at 0x3e095a9f4c50>)
File "<string>",line 3,in raise_from
six.raise_from(new_exc,caught_exc)
File "/env/local/lib/python3.7/site-packages/google/auth/compute_engine/credentials.py",line 117,in refresh
self.refresh(request)
File "/env/local/lib/python3.7/site-packages/google/auth/credentials.py",line 133,in before_request
self._request,context.method_name,context.service_url,headers
File "/env/local/lib/python3.7/site-packages/google/auth/transport/grpc.py",line 88,in _get_authorization_headers
callback(self._get_authorization_headers(context),None)
File "/env/local/lib/python3.7/site-packages/google/auth/transport/grpc.py",line 101,in __call__
context,_AuthMetadataPluginCallback(callback_state,callback))
File "/env/local/lib/python3.7/site-packages/grpc/_plugin_wrapping.py",line 78,in __call__
Traceback (most recent call last):
The above exception was the direct cause of the following exception:
google.auth.exceptions.TransportError: ("Failed to retrieve http://Metadata.google.internal/computeMetadata/v1/instance/service-accounts/myproject@appspot.gserviceaccount.com/token?scopes=https%3A%2F%2Fwww.googleapis.com%2Fauth%2Fcloud-platform from the Google Compute EngineMetadata service. Status: 500 Response:\nb'Could not fetch URI /computeMetadata/v1/instance/service-accounts/myproject@appspot.gserviceaccount.com/token?scopes=https%3A%2F%2Fwww.googleapis.com%2Fauth%2Fcloud-platform\\n'",<google.auth.transport.requests._Response object at 0x3e095a9f4c50>)
response,File "/env/local/lib/python3.7/site-packages/google/auth/compute_engine/_Metadata.py",line 187,in get
token_json = get(request,path,params=params)
File "/env/local/lib/python3.7/site-packages/google/auth/compute_engine/_Metadata.py",line 263,in get_service_account_token
request,service_account=self._service_account_email,scopes=scopes
File "/env/local/lib/python3.7/site-packages/google/auth/compute_engine/credentials.py",line 113,in refresh
Traceback (most recent call last):
AuthMetadataPluginCallback "<google.auth.transport.grpc.AuthMetadataPlugin object at 0x3e0961671dd0>" raised exception!
解决方法
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