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The host/runtime that powers Azure Functions
https://functions.azure.com
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Function in .Net 8 with in-process model failed to startup in Linux container hosted in AKS #10413

Open anupamk1506 opened 2 months ago

anupamk1506 commented 2 months ago

Is your question related to a specific version? If so, please specify: .NET 8 dotnet-inproc linux Container AKS V4

What language does your question apply to? (e.g. C#, JavaScript, Java, All) C#

Question

We migrated the function to .Net 8 with in-process model using the steps mentioned in https://github.com/Azure/azure-functions-host/issues/9951#issuecomment-2174365098.

It is working fine locally on windows machine with Visual studio. We deployed function in AKS with Linux containers using base image mcr.microsoft.com/azure-functions/dotnet:4.

The function is not working in AKS, we checked the pod logs where it shows it has issue with Startup.

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We checked the application insights, where is shows : Error configuring services in an external startup class. Could not load file or assembly 'Microsoft.Extensions.Configuration.Abstractions, Version=8.0.0.0, Culture=neutral, PublicKeyToken=adb9793829ddae60'. The system cannot find the file specified.

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We tried downgrading the version and removing the package 'Microsoft.Extensions.Configuration.Abstractions. However it didn’t work. And got the same error.

The NuGet package used are : image

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We have added keys in local.setting.json and appsetting.json

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The same function is working in .Net6 InProc and we are facing this issue after .Net8 upgrade to InProc.

This is blocker to us for our .Net 8 upgrade. Need help in resolving/investigation of this issue.

Let me know if you need more information.

Thanks!

kshyju commented 2 months ago

What is the HOST_VERSION environment variable value you are seeing in your container?

anupamk1506 commented 2 months ago

What is the HOST_VERSION environment variable value you are seeing in your container?

@kshyju Currently we haven't set the HOST_VERSION environment variable in docker file

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Do we require to add this for inproc function ? As per this thread https://github.com/Azure/azure-functions-docker/issues/1105 HOST_VERSION should be set for isolated function for Open telemetry. Please suggest.

kshyju commented 2 months ago

The base image sets it. Run the container and you should be able to inspect the env variables.

anupamk1506 commented 2 months ago

The base image sets it. Run the container and you should be able to inspect the env variables.

@kshyju , yes, I can this variable is being set when we build the docker image

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At Pod level, I can see the variable HOST_VERSION is properly set

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Do we need to override this? Please suggest

kshyju commented 2 months ago

I believe you are using an incorrect base image. @satvu Could you please point the image which supports in-proc net8 ?

anupamk1506 commented 2 months ago

I believe you are using an incorrect base image. @satvu Could you please point the image which supports in-proc net8 ?

@kshyju Thanks for update. @satvu Can you please share image which supports in-proc net8?

kshyju commented 2 months ago

Please try mcr.microsoft.com/azure-functions/dotnet:4-dotnet8.0

KlausHans commented 4 days ago

I have the same problem and unfortunately mcr.microsoft.com/azure-functions/dotnet:4-dotnet8.0 didn't solved it for me. Any other ideas?