如何从Kubernetes Engine访问Google KMS？

我必须将.Net Core应用程序从Google App Engine移至Google Kubernetes Engine，因为我需要静态IP，可惜Google App Engine没有该选项。

我设法制作了一个群集和一些吊舱，但是在日志中看到：

Unhandled exception. Grpc.Core.RpcException: Status(StatusCode=PermissionDenied, Detail="Request had insufficient authentication scopes.")
   at Grpc.Core.Internal.AsyncCall`2.UnaryCall(TRequest msg)
   at Grpc.Core.Calls.BlockingUnaryCall[TRequest,TResponse](CallInvocationDetails`2 call, TRequest req)
   at Grpc.Core.DefaultCallInvoker.BlockingUnaryCall[TRequest,TResponse](Method`2 method, String host, CallOptions options, TRequest request)
   at Grpc.Core.Interceptors.InterceptingCallInvoker.<BlockingUnaryCall>b__3_0[TRequest,TResponse](TRequest req, ClientInterceptorContext`2 ctx)
   at Grpc.Core.ClientBase.ClientBaseConfiguration.ClientBaseConfigurationInterceptor.BlockingUnaryCall[TRequest,TResponse](TRequest request, ClientInterceptorContext`2 context, BlockingUnaryCallContinuation`2 continuation)
   at Grpc.Core.Interceptors.InterceptingCallInvoker.BlockingUnaryCall[TRequest,TResponse](Method`2 method, String host, CallOptions options, TRequest request)
   at Google.Cloud.Kms.V1.KeyManagementService.KeyManagementServiceClient.Decrypt(DecryptRequest request, CallOptions options)
   at Google.Api.Gax.Grpc.ApiCall.GrpcCallAdapter`2.CallSync(TRequest request, CallSettings callSettings)
   at Google.Api.Gax.Grpc.ApiCallRetryExtensions.<>c__DisplayClass1_0`2.<WithRetry>b__0(TRequest request, CallSettings callSettings)
   at Google.Api.Gax.Grpc.ApiCall`2.<>c__DisplayClass10_0.<WithCallSettingsOverlay>b__1(TRequest req, CallSettings cs)
   at Google.Api.Gax.Grpc.ApiCall`2.Sync(TRequest request, CallSettings perCallCallSettings)
   at Google.Cloud.Kms.V1.KeyManagementServiceClientImpl.Decrypt(DecryptRequest request, CallSettings callSettings)
   at Google.Cloud.Kms.V1.KeyManagementServiceClient.Decrypt(CryptoKeyName name, ByteString ciphertext, CallSettings callSettings)
   at Neo.Services.Kms.EncryptedFileInfo.CreateReadStream() in /app/Services/Kms/EncryptedFileInfo.cs:line 81
   at Microsoft.Extensions.Configuration.FileConfigurationProvider.Load(Boolean reload)
   at Microsoft.Extensions.Configuration.FileConfigurationProvider.Load()
   at Microsoft.Extensions.Configuration.ConfigurationRoot..ctor(IList`1 providers)
   at Microsoft.Extensions.Configuration.ConfigurationBuilder.Build()
   at Neo.Services.Config.ConfigurationProvider.get_AppConfig() in /app/Services/Config/ConfigurationProvider.cs:line 27
   at Neo.Startup.LogAppChecks() in /app/Startup.cs:line 197
   at Neo.Startup.Run() in /app/Startup.cs:line 24
   at Neo.Program.Main() in /app/Program.cs:line 5

我设法找到了这个问题，因为我无法appsettings.json在Kubernetes中解密我的文件。它在Google App Engine中工作。

我的猜测是，因为GAE已默认设置了GOOGLE_APPLICATION_CREDENTIALS环境变量。

我找到了那篇文章，但看起来它描述的是不同的东西。

如何从Kubernetes Engine访问Google KMS？

@更新

我的节点池的输出描述：

config:
  diskSizeGb: 100
  diskType: pd-standard
  imageType: COS
  machineType: n1-standard-1
  metadata:
    disable-legacy-endpoints: 'true'
  oauthScopes:
  - https://www.googleapis.com/auth/devstorage.read_only
  - https://www.googleapis.com/auth/logging.write
  - https://www.googleapis.com/auth/monitoring
  - https://www.googleapis.com/auth/service.management.readonly
  - https://www.googleapis.com/auth/servicecontrol
  - https://www.googleapis.com/auth/trace.append
  serviceAccount: default

我已经使用此命令将范围添加到新的节点池中

gcloud container node-pools create your-pool-name --zone europe-west1-b --cluster 
your-cluster-name --num-nodes 1 --scopes default,bigquery,cloud-platform,compute-rw,datastore,storage-full,taskqueue,userinfo-email,sql-admin

现在我得到：

Unhandled exception. Grpc.Core.RpcException: Status(StatusCode=PermissionDenied, Detail="Permission 'cloudkms.cryptoKeyVersions.useToDecrypt' denied on resource 'projects/project-name/locations/global/keyRings/webapp/cryptoKeys/appsecrets' (or it may not exist).")
   at Grpc.Core.Internal.AsyncCall`2.UnaryCall(TRequest msg)
   at Grpc.Core.Calls.BlockingUnaryCall[TRequest,TResponse](CallInvocationDetails`2 call, TRequest req)
   at Grpc.Core.DefaultCallInvoker.BlockingUnaryCall[TRequest,TResponse](Method`2 method, String host, CallOptions options, TRequest request)
   at Grpc.Core.Interceptors.InterceptingCallInvoker.<BlockingUnaryCall>b__3_0[TRequest,TResponse](TRequest req, ClientInterceptorContext`2 ctx)
   at Grpc.Core.ClientBase.ClientBaseConfiguration.ClientBaseConfigurationInterceptor.BlockingUnaryCall[TRequest,TResponse](TRequest request, ClientInterceptorContext`2 context, BlockingUnaryCallContinuation`2 continuation)
   at Grpc.Core.Interceptors.InterceptingCallInvoker.BlockingUnaryCall[TRequest,TResponse](Method`2 method, String host, CallOptions options, TRequest request)
   at Google.Cloud.Kms.V1.KeyManagementService.KeyManagementServiceClient.Decrypt(DecryptRequest request, CallOptions options)
   at Google.Api.Gax.Grpc.ApiCall.GrpcCallAdapter`2.CallSync(TRequest request, CallSettings callSettings)
   at Google.Api.Gax.Grpc.ApiCallRetryExtensions.<>c__DisplayClass1_0`2.<WithRetry>b__0(TRequest request, CallSettings callSettings)
   at Google.Api.Gax.Grpc.ApiCall`2.<>c__DisplayClass10_0.<WithCallSettingsOverlay>b__1(TRequest req, CallSettings cs)
   at Google.Api.Gax.Grpc.ApiCall`2.Sync(TRequest request, CallSettings perCallCallSettings)
   at Google.Cloud.Kms.V1.KeyManagementServiceClientImpl.Decrypt(DecryptRequest request, CallSettings callSettings)
   at Google.Cloud.Kms.V1.KeyManagementServiceClient.Decrypt(CryptoKeyName name, ByteString ciphertext, CallSettings callSettings)
   at Neo.Services.Kms.EncryptedFileInfo.CreateReadStream() in /app/Services/Kms/EncryptedFileInfo.cs:line 81
   at Microsoft.Extensions.Configuration.FileConfigurationProvider.Load(Boolean reload)
   at Microsoft.Extensions.Configuration.FileConfigurationProvider.Load()
   at Microsoft.Extensions.Configuration.ConfigurationRoot..ctor(IList`1 providers)
   at Microsoft.Extensions.Configuration.ConfigurationBuilder.Build()
   at Neo.Services.Config.ConfigurationProvider.get_AppConfig() in /app/Services/Config/ConfigurationProvider.cs:line 27
   at Neo.Startup.LogAppChecks() in /app/Startup.cs:line 197
   at Neo.Startup.Run() in /app/Startup.cs:line 24
   at Neo.Program.Main() in /app/Program.cs:line 5

在我将Google KMS Decypt / Encrypt角色添加到服务帐户后，它可以工作了！

谢谢@sethvargo

现在工作