We have a server application based on Python 3.6 running on Google Kubernetes Engine. I added Google StackDriver Debug to aid in debugging some production issues but I cannot get our app to show up in the Stackdriver debug console. The 'application to debug' dropdown menu stays empty.
The kubernetes cluster is provisioned with the cloud-debug scope and the app starts up correctly. Also, the Stackdriver Debugging API is enabled on our project. When running the app locally on my machine, cloud debugging works as expected, but I cannot find a reason why it won't work on our production environment
In my case the problem was not with the scopes of the platform, but rather with the fact that you cannot simply pip install google-python-cloud-debugger on the official python-alpine docker images. Alpine Linux support is not tested regularly and my problem was related to missing symbols in the C-library. Alpine Linux uses the MUSL C-library and it needs a google cloud debugger specifically built for that library. After preparing a specific docker image for this, I got it to work with the provided credentials.