Kubelet
In plain terms
The agent running on each Kubernetes node.
Going deeper
The kubelet ensures containers described by pod specs are running and healthy on its node, reporting status to the control plane. It's the node's local manager.
Under the hood
Talks to the container runtime via CRI and to the API server; the node-level enforcer of desired state.
Examples
Node agent, pod lifecycle, health reporting, container runtime interface.
Think of it like...
Like a floor supervisor making sure each worker (pod) is doing its assigned job.