Which component schedules Pods to Nodes in Kubernetes?

Which component schedules Pods to Nodes in Kubernetes?

• A. etcd
• B. kube-apiserver
• C. kube-proxy
• D. kube-scheduler

Answer: (D)

Scheduling Pods to Nodes is the job of the kube-scheduler. It watches for Pods that are Pending and uses the scheduling algorithm to pick a suitable Node based on resource requests (CPU/memory), constraints like taints and tolerations, node selectors, and affinity rules. Once a match is found, the scheduler binds the Pod to the chosen Node by updating the Pod’s assignment in the API server, allowing the corresponding kubelet on that Node to run the Pod. Other components have different roles: etcd stores cluster state, the API server exposes the cluster API, and kube-proxy handles network rules on each Node.

Scheduling Pods to Nodes is the job of the kube-scheduler. It watches for Pods that are Pending and uses the scheduling algorithm to pick a suitable Node based on resource requests (CPU/memory), constraints like taints and tolerations, node selectors, and affinity rules. Once a match is found, the scheduler binds the Pod to the chosen Node by updating the Pod’s assignment in the API server, allowing the corresponding kubelet on that Node to run the Pod. Other components have different roles: etcd stores cluster state, the API server exposes the cluster API, and kube-proxy handles network rules on each Node.