Kubernetes: Preparing for the CKA and CKAD Certifications

© The Author(s), under exclusive license to APress Media, LLC , part of Springer Nature 2021

P. MartinKuberneteshttps://doi.org/10.1007/978-1-4842-6494-2_2

2. Control Plane Components

Philippe Martin¹  

(1)

Gif-sur-Yvette, France

 

The Kubernetes control plane is composed of

• The API server kube-apiserver, the front end for the Kubernetes control plane

• The key-value store etcd, the backing store of all cluster data

• The scheduler kube-scheduler, which selects nodes for new Pods to run on

• The Controller Manager kube-controller-manager, which embeds all the controllers, including the Node controller, Replication controller, Endpoints controller, and Service Account and Token controllers.

On each node, the components running are

• kubelet , which makes sure the ...