Core control plane components
WHAT IT TESTS: knowledge of cluster brain components. OUTLINE: api-server as the front door, etcd as state store, scheduler placing pods, and controller-manager running reconciliation loops, plus cloud-controller-manager.
WHAT IT TESTS: whether you can name the control plane components and their roles. ANSWER OUTLINE: the kube-apiserver is the central API and only component talking to etcd; etcd is the consistent key-value store holding all cluster state; the kube-scheduler assigns unscheduled Pods to Nodes; the kube-controller-manager runs the reconciliation controllers; and the cloud-controller-manager integrates with the cloud provider. RED FLAG: listing node components like kubelet, kube-proxy, or the container runtime as control plane pieces.
Read the original → interview
- #kubernetes
- #control-plane
- #architecture
- #etcd
- #fundamentals
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