Overview of Kubernetes with Architecture Explained

DevOps
Posted on | by Senthil

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– What is Kubernetes?

Kubernetes is an open-source container orchestration framework developed by Google to manage containerized applications (Docker, Rkt, etc…)


– Why Do we need Kubernetes?

Rise of containerized applications and managing them across multiple environments


– Benefits of Kubernetes?

  1. High availability or no downtime
  2. Scalability or high performance
  3. Disaster recovery – backup and restore

– How Kubernetes works aka Kubernetes architecture with image?

Kubernetes consists of a master node and worker nodes.

Master node contains API server, scheduler, controller-manager and etcd.

Worker node contains kubectl, kube-proxy, container run time environment, pods and containers.

Each pod is going to have an unique IP and can communicate with other pods across nodes using kube-proxy

Each node can communicate with any pods within the cluster

Pod is the smallest unit in the Kubernetes