Docker image dotnet-isolated

[lKoTl]

I'm using Functions as dotnet-isolated locally and it works fine.
I wish to host it with a docker container, so went straight to the dotnet-isolated images.

I have 2 Timer Trigger functions and 1 Queue Trigger function.

When using FROM mcr.microsoft.com/azure-functions/dotnet-isolated:3.0 image I get missing compatible framework version and gRPC fails.

Host started (1559ms)
Job host started
It was not possible to find any compatible framework version
The framework 'Microsoft.AspNetCore.App', version '5.0.0' was not found.
- No frameworks were found.
You can resolve the problem by installing the specified framework and/or SDK.
The specified framework can be found at:
- https://aka.ms/dotnet-core-applaunch?framework=Microsoft.AspNetCore.App&framework_version=5.0.0&arch=x64&rid=debian.10-x64

�=fail: Microsoft.Azure.WebJobs.Script.Workers.Rpc.RpcFunctionInvocationDispatcher[0]
Exceeded language worker restart retry count for runtime:dotnet-isolated. Shutting down and proactively recycling the Functions Host to recover

---

Comparing the dotnet and dotnet-isolated:

dotnet	dotnet-isolated	Question
FROM mcr.microsoft.com/dotnet/core/runtime-deps:3.1	FROM mcr.microsoft.com/dotnet/runtime:5.0	Why isolated isn't using aspnet core runtime?

I hope to get some assistance with this.

---

UPDATE
I went installing aspnetcore-runtime-5.0 into the image manually, so the functions now are starting.

RUN wget https://packages.microsoft.com/config/debian/10/packages-microsoft-prod.deb -O packages-microsoft-prod.deb
RUN dpkg -i packages-microsoft-prod.deb

RUN apt-get update -y \
  && apt-get install -y apt-transport-https \
  && apt-get update -y \
  && apt-get install -y aspnetcore-runtime-5.0

New issue that I'm hitting:

Host started (1475ms)
Job host started

Unhandled exception. Grpc.Core.RpcException: Status(StatusCode="Unavailable", Detail="Error starting gRPC call. HttpRequestException: Connection refused (127.0.0.1:80) SocketException: Connection refused", DebugException="System.Net.Http.HttpRequestException: Connection refused (127.0.0.1:80)

Unhandled exception. Grpc.Core.RpcException: Status(StatusCode="Internal", Detail="Error starting gRPC call. HttpRequestException: An error occurred while sending the request. Http2ConnectionException: The HTTP/2 server sent invalid data on the connection. HTTP/2 error code 'PROTOCOL_ERROR' (0x1).", DebugException="System.Net.Http.HttpRequestException: An error occurred while sending the request.

---

UPDATE 2
Solved the gRPC startup issue with the 15733 image.

Next problem:

Executing 'Functions.X' (Reason='New queue message detected on 'Y'.', Id=ca5fbb1e-30a2-4dc2-be3a-992c8d1a2b2a)
Trigger Details: MessageId: xyz, DequeueCount: 1, InsertionTime: 2021-05-11T09:08:28.000+00:00

MS_FUNCTION_AZURE_MONITOR_EVENT 2,xyz,Microsoft.Web/sites/functions/log,FunctionAppLogs,,"{'appName':'xyz','roleInstance':'-','message':'Final functionDispatcher state: WorkerProcessRestarting. Initialization timed out and host is shutting down','category':'Microsoft.Azure.WebJobs.Script.Description.WorkerFunctionInvoker','hostVersion':'3.0.15733.0','functionInvocationId':'ca5fbb1e-30a2-4dc2-be3a-992c8d1a2b2a','functionName':'X','hostInstanceId':'xyz','level':'Error','levelId':4,'processId':1}"

Final functionDispatcher state: WorkerProcessRestarting. Initialization timed out and host is shutting down

FunctionExecutor.cs : 94','exceptionMessage':'Did not find any initialized language workers','exceptionType':'System.InvalidOperationException','eventId':3,'eventName':'FunctionCompleted'}

[lKoTl]

Updated the description.

[dfibuch]

I'm having the same problem, running a v3 Functions App using Docker (same image as you) with dotnet-isolated runtime. I've got a ticket open with MS to try solve this. I have tried deploying completely new AppService/ResourceGroup/FunctionsApp but still no luck,

Did you get anywhere with your issue?

[lKoTl]

@dfibuch,
No, I didn't take the fight; just optimized the existing function to take less than 10 min and hosted it on consumption plan.

[dfibuch]

@lKoTl Fair enough. I just got off the phone with MS Azure support to show them exactly what is going on and it'll be getting escalated. Will update here if/when I hear back from them.

[dcwUipath]

Possibly related: Azure/azure-functions-dotnet-worker#524

[dfibuch]

Possibly related: Azure/azure-functions-dotnet-worker#524

Thank you for linking this, it has actually fixed my issue,