Walk me through what the kubelet does between PodScheduled and a running container. Why do nodes flap NotReady while pods keep serving?

The kubelet is a local reconcile loop with its own event stream, probe workers and eviction brain. The detail worth holding onto is that Ready status can reflect either a reported health failure or missing heartbeats, and those have different causes and different fixes.

Grounded in researched DevOps, SRE and platform engineering interview loops, written to a senior-engineer editorial bar, and never padded to hit a word count.