Culling idle Kernels

[manics]

Kernels can only be culled from inside jupyter-server, JupyterHub can’t mange this. There’s a good explanation here:

Which is the correct way to cull idle kernels and notebook?

While the two aim in general to solve the same category of problem (wasted resources), they have different metrics available and different levels of action to take. The notebook-environment configuration should in general produce better, more fine-grained results because it can do things like cull unused kernels and be aware of things like idle/busy or connected status. This lets the notebook server make more intelligent choices like “shutdown a kernel if it’s been idle for 5 minutes BUT not if…

You’ll need to create or mount a config file with the kernel culling config into your singleuser servers:
https://jupyter-server.readthedocs.io/en/latest/users/configuration.html