Does kwok support get metrics similar to node-exporter to determine scheduling?

[ShyunnY]

I am currently developing a custom scheduler, let's call it LoadNode plugin!

This plugin mainly uses prometheus/client to get the CPU load of each Node stored in prometheus in real time, and then performs a series of algorithms to finally calculate the score of the Pod in the current Node.

Before this, I found that it was a painful thing to test. We can only test in a real test cluster, and cannot simulate through some localized cluster components (such as: kind, minikube). By chance, I learned about the kwok component.

I urgently want to know whether kwok can meet my above testing needs? Thank you very much!

[wzshiming]

Currently, node-exporter is not supported, only metrics-server is supported, maybe you can consider getting CPU load from metrics-server.

https://kwok.sigs.k8s.io/docs/technical-outcomes/scalability/scale-using-hpa/

[ShyunnY]

I may not understand the documentation. What I want is:

• kwok can use the external scheduler when starting
• and the external scheduler can get fake kwok metrics through rest

It seems that these two points cannot be achieved now?

[wzshiming]

I think kube-scheduler-simulator/e2e-framework has a example that can do what you want.