Kubernetes

Kubernetes is an open source container orchestration system that manages containerized applications across multiple hosts. It provides mechanisms for deployment, maintenance, and scaling of applications based on Google's internal Borg system.

Key Features

• Container orchestration - Schedules and manages containers across clusters
• Service discovery and load balancing - Exposes containers and distributes network traffic
• Storage orchestration - Automatically mounts storage systems
• Automated rollouts and rollbacks - Manages application deployments
• Self-healing - Restarts failed containers and replaces nodes
• Secret and configuration management - Manages sensitive data without rebuilding images
• Horizontal scaling - Scales applications up/down based on demand

Installation

Kubernetes deployment varies by environment. For local development:

# Using minikube
curl -LO https://storage.googleapis.com/minikube/releases/latest/minikube-linux-amd64
sudo install minikube-linux-amd64 /usr/local/bin/minikube

# Start cluster
minikube start

For cloud deployments, use managed services like GKE, EKS, or AKS.

Basic Usage

# Deploy an application
kubectl create deployment nginx --image=nginx

# Expose the deployment
kubectl expose deployment nginx --port=80 --type=LoadBalancer

# View running pods
kubectl get pods

# Scale the deployment
kubectl scale deployment nginx --replicas=3

Project Details

• License: Apache-2.0
• Language: Go
• Community: 121K+ GitHub stars, CNCF hosted
• Governance: Steering committee with formal enhancement process
• Documentation: kubernetes.io