What is the purpose of the Kubernetes Node Problem Detector (NPD) and what types of issues does it detect?

Question

Kubernetes Fundamentals — Hard

What is the purpose of the Kubernetes Node Problem Detector (NPD) and what types of issues does it detect?

Accepted Answer

The Kubernetes Node Problem Detector (NPD) is a DaemonSet that monitors node health. It reports infrastructure issues, such as kernel deadlocks and hardware failures, to the API server. This enables the cluster to respond to underlying problems. Option B is correct as it accurately describes NPD's purpose.