What components does the control plane in Kubernetes consist of?

The Control Plane components of Kubernetes include:

• kube-apiserver: Provides the Kubernetes API, handles all requests, and is responsible for validation and storing the cluster state.
• etcd: A distributed, consistent key-value store used for storing cluster configuration data and state.
• kube-scheduler: Assigns newly created pods to nodes by analyzing pod requirements and available node resources.
• kube-controller-manager: Runs controllers that monitor the cluster state via the API server and aim to bring the current state to the desired state. Examples include Deployment Controller, DaemonSet Controller, and Replication Controller.
• cloud-controller-manager (optional): Interacts with cloud providers (AWS, GCP, Azure, etc.) to manage cloud-specific resources such as load balancers and disks.

This table summarizes the purpose of each component:

Component	Purpose
kube-apiserver	API, validation, state storage
etcd	Distributed state storage
kube-scheduler	Scheduling pods to nodes
kube-controller-manager	Running controllers to manage resources
cloud-controller-manager	Interacting with the cloud provider