Accessing Google Cloud Datastore locally from ASP.NET throws Grpc.Core.RpcException: “Missing or insufficient permissions.”

问题

I'm following the Using Cloud Datastore with .NET tutorial. At some point it says that you can run the provided project locally by just pressing F5. When I do that I get the following exception

Grpc.Core.RpcException: 'Status(StatusCode=PermissionDenied, Detail="Missing or insufficient permissions.")'

This exception is thrown exactly at the _db.RunQuery(query) line.

var query = new Query("Book") { Limit = pageSize };
if (!string.IsNullOrWhiteSpace(nextPageToken))
    query.StartCursor = ByteString.FromBase64(nextPageToken);
var results = _db.RunQuery(query);`

If I deploy the application to cloud it works as expected, no error. I've given datastore owner permissions to all accounts in Cloud IAM (Identity and Access Management) but it still doesn't work. Does anybody have any ideas?

回答1:

As Jon Skeet pointed out, I was using the wrong json key locally. Previously I created a compute engine that has a separate service account. After I downloaded a new json key from Console -> IAM & Admin -> Service Accounts it worked locally as well.

来源：https://stackoverflow.com/questions/48719868/accessing-google-cloud-datastore-locally-from-asp-net-throws-grpc-core-rpcexcept