what is kubernetes?

Kubernetes is an open-source container orchestration system for automating software deployment, management and scaling.

Why kubernetes?

 Kubernetes has greater flexibility and capacity to scale.

 help orchestrate containerization in a multitude of environments.

including hosting software on a vendor’s cloud, self-hosting by a business, or in a hybrid environment.

allowing businesses to offload some of the deployment complexity. 

Kubernete components

A Kubernetes cluster:

consists of a set of worker machines, called nodes that run containerized applications. Every cluster has at least one worker node.

apiserver:

Provides an API that serves as the front end of a Kubernetes(control panel).It is responsible for handling external and internal requests.

ETCD:

contains data about your cluster state and configuration.

Scheduler:

Assigning work(container) to workers.

Controller manager:

controlling all the state of workers.

Kube proxy:

All compute nodes contain kube-proxy, a network proxy that facilitates Kubernetes networking services.

Kubelete:

Each node contains a kubelet, which is a small application that can communicate with the Kubernetes control plane. 

Network Driver:

 networking enables containers to communicate with hosts or other containers.