How to make Jupyter Notebook Kernel throw Out Of Memory Error in Kubernetes

Question

I am serving jupyter notebook through a Kubernetes cluster. And I've set resources.limits to prevent someone from draining all of the host servers memory.

While one problem is that the jupyter notebook kernels after crash and automatic restart they do not throw any OOM errors after the container exceeds the memory, which will make the user very confused.

So how can I make the jupyter notebook raise the OOM error when running with Kubernetes?

Answer 1

If you have only one specific pod, you can monitor the events/logs, as in here:

kubectl get events --watch 
kubectl logs -f podname

That being said, not all events in a pod lifecycle are properly reported, as shown in kubernetes/kubernetes issue 38532 and the (abandoned) PR 45682.
But you should still see OOMKilled:true when docker inspect'ing the pod.