Question

A platform team is designing a cluster and wants to understand the layered responsibility for actually starting containers on a node. The kubelet does not run containers itself. Which statement correctly describes how the kubelet gets a container running on a node?

Accepted Answer

The kubelet talks to a container runtime over the Container Runtime Interface (CRI), and that runtime pulls the image and starts the container process.

Answer

The kubelet calls the container runtime directly over the Container Network Interface (CNI) to launch each container.

Answer

The kube-scheduler starts the container after binding the Pod to the node, bypassing the kubelet entirely.

Answer

The kubelet writes the Pod spec into etcd, and etcd instructs the runtime to launch the container.