What is recommended way to create and analyze memory dump from ASP.NET Core 8 application running in docker container?

[rouen-sk]

I have an ASP.NET Core 8 application, containerized (using MSBuild, without dockerfile) running in AKS. It is stable (not crashing, not leaking) but the memory usage is higher than expected. So I wanted to investigate, using dotnet-counters and dotnet-dump.

I've managed to connect to pod shell

kubectl exec -n prod --stdin --tty my-api-77cff99b66 -- /bin/bash

but since the base image is ASP.NET Core runtime only, tools like dotnet-counters and dotnet-dump are not present, and cannot be installed. User is not root, there is no sudo, therefore no apt install.

What is recommended way to create and analyze dump from production application running on runtime (not SDK) image? Is it even possible? Or do I need to rebuild image with SDK base image and/or root user, and deploy it to production?

Thank you!

[dotnet-issue-labeler[bot]]

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[lbussell]

[Triage] We recommend running .NET Monitor in your Kubernetes cluster in order to collect the dump from your application. There's some documentation on how to set up .NET Monitor with Kubernetes here. .NET Monitor images are published out of this repo: https://github.com/dotnet/dotnet-docker/blob/main/README.monitor.md.