Kubernetes Control Plane Components

Component Name	Primary Function	Runs Control Loops?
kube-apiserver	Exposes the Kubernetes API; acts as the entry point for all cluster communication and commands.	No (It processes requests but does not run the loops).
etcd	Stores the complete cluster configuration and state data in a secure, distributed key-value database.	No (It is a passive data store).
kube-scheduler	Assigns newly created Pods to optimal worker nodes based on resource availability and constraints.	No (It focuses purely on placement decisions).
kube-controller-manager	Yes. It embeds core control loops (like node, job, and endpoint controllers) that constantly watch the cluster state and drive it toward the desired configuration.	Yes (Primary manager for core cluster loops).
cloud-controller-manager	Connects your cluster to a cloud provider's API to manage cloud-specific resources like load balancers and storage.	Yes (Specifically for cloud-infrastructure loops).