In the context of Kubernetes, which component is responsible for running containers on each node in the cluster?

• A. API Server
• B. Kubelet
• C. Container-Runtime
• D. Scheduler

Answer: (C)

The kubelet is the component on each node that ensures containers for pods are actually running. It acts as the node’s agent, watching the API server for Pod specifications scheduled to run on that node and then instructing the container runtime (such as containerd or Docker) to pull images and start the containers for each pod. It also monitors their health and reports status back to the API server. While the container runtime is what actually executes the container processes, the kubelet coordinates those actions on every node, which is why it’s the component responsible for running containers on each node. The API server and scheduler operate at the control plane level and do not run containers on nodes.