Kubernetes Deployment Strategies 🚀

This repository demonstrates three essential Kubernetes deployment strategies: Blue-Green, Canary, and Rollback. Each approach helps in achieving safer and more controlled deployments for production workloads.

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📂 Folder Structure

Kubernet_Deployment_Strategies/
│
├── README.md                    # Main repo README (overview of all strategies)
│
├── blue-green/
│  
├── canary/
│
└── rollback/

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📌 Strategies Explained

1️⃣ Blue-Green Deployment

Concept: Maintain two environments — Blue (current version) and Green (new version). Traffic is switched between them.

Benefits:

• Zero downtime
• Easy rollback
• Safer version switches

📁 blue-green/ contains:

• YAML files to deploy blue and green versions
• Sample service switch
• Steps to simulate environment switch

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2️⃣ Canary Deployment

Concept: Gradually roll out the new version to a small set of users before full deployment.

Benefits:

• Detect issues early
• Minimize risk in production
• Better control over release

📁 canary/ contains:

• Deployment manifests with replica ratios
• Traffic splitting example
• Update strategies

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3️⃣ Rollback Strategy

Concept: Demonstrates how to roll back to a previous stable deployment in case of failures.

Benefits:

• Fast recovery from faulty updates
• Built-in Kubernetes support
• Minimal manual intervention

📁 rollback/ contains:

• 2 apps: One simple website without backend and One fullstack app with backend
• Faulty update simulation
• Rollback commands and YAML

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🚀 Getting Started

Prerequisites

• Kubernetes cluster (Minikube, Kind, or any K8s setup)
• kubectl CLI installed

Deploying a Strategy

cd blue-green   # or canary, rollback
kubectl apply -f .

Follow the instructions in each folder’s README.md for step-by-step deployment and testing.