Exam KCNA topic 1 question 129 discussion

The component of the node responsible for running workloads is the kubelet. While the container runtime (like Docker, containerd, or CRI-O) is crucial for actually running the containers, the kubelet is the orchestrator that ensures the containers are running as specified by the Kubernetes control plane.

The correct answer is: D. The container runtime Explanation: The container runtime is the component of a Kubernetes node that is directly responsible for running workloads, i.e., starting and managing containers. Breakdown of the options: A. The kubelet → ❌ The kubelet manages the node and ensures containers are running, but it delegates the actual running of containers to the container runtime. B. The kube-proxy → ❌ Handles network routing for services, not workloads. C. The kube-apiserver → ❌ Part of the control plane, not a node component; it handles API requests. D. The container runtime → ✅ Runs the containers (e.g., containerd, CRI-O, Docker). Would you like a diagram showing how the kubelet, container runtime, and other node components interact?

i think kubelet

B. The kubeproxy Incorrect. kube-proxy is responsible for maintaining network rules on nodes and ensuring that network traffic is correctly routed to the appropriate Pods. It is not responsible for running workloads. C. The kube-apiserver Incorrect. The kube-apiserver is a central component of the Kubernetes control plane that exposes the Kubernetes API. It handles API requests and updates the state of the cluster but does not run workloads. D. The container runtime Incorrect. While the container runtime (e.g., Docker, containerd) is responsible for running containers, it is the kubelet that manages the lifecycle of those containers and ensures they are running according to the Pod specifications.

The container runtime is the component of the node responsible for running workloads in the form of containers

are D....The container runtime is responsible for running the workloads (containers) on a node in Kubernetes. It pulls container images from a registry and manages the lifecycle of containers. Examples of container runtimes include Docker, containerd, and CRI-O.

Kubelet manage entire life cycle of the containers, while container runtime manages the runtime of the workload. So the answer is D

The component of the node responsible for running workloads is the kubelet.

The container runtime is responsible for running the containers that make up the workloads on the node. The kubelet interacts with the container runtime to start, stop, and manage containers, but it is the container runtime itself that actually runs the workloads.