Question

A platform engineer is explaining Kubernetes control plane data flow to a new teammate. The teammate asks how the controller-manager and scheduler obtain the cluster state they need to make decisions. Which statement correctly describes how these components access cluster state?

Accepted Answer

They read and write cluster state exclusively through the kube-apiserver, which is the only component that talks directly to etcd.

Answer

They connect directly to etcd to read desired state and write status updates for fast performance.

Answer

They query the kubelet on each node to aggregate the current state of the cluster.

Answer

They maintain their own local copies of etcd that periodically sync with the primary etcd datastore.