1️⃣4️⃣ GitOps – Git for Infrastructure as Code (IaC)

 

1️⃣4️⃣ GitOps – Git for Infrastructure as Code (IaC)

GitOps is a modern approach to managing infrastructure and deployments using Git as a single source of truth. It enables automation, consistency, and reliability in DevOps practices.

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🔹 What is GitOps?

GitOps is an operational framework that applies DevOps best practices like:
✅ Version Control (Infrastructure as Code - IaC)
✅ Collaboration & Code Reviews
✅ Automated CI/CD Pipelines

It ensures that infrastructure and application deployments are always consistent, traceable, and automated.

How GitOps Works?

1️⃣ Developers define infrastructure and application configurations in Git
2️⃣ Changes are reviewed and merged via Pull Requests
3️⃣ GitOps tools (like ArgoCD or Flux) continuously sync changes to the cluster
4️⃣ Monitoring ensures system state matches Git

🚀 Key Benefits of GitOps:
✔️ Declarative and automated infrastructure management
✔️ Rollback & Recovery using Git commits
✔️ Better security through Git-based access control

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🔹 Using Git for Kubernetes Deployments

With GitOps and Kubernetes, deployments are automated via manifest files stored in Git.

GitOps Deployment Workflow for Kubernetes

# Step 1: Define Kubernetes manifests
kubectl create deployment my-app --image=my-app:v1 -o yaml > my-app.yaml  

# Step 2: Add the manifest to Git
git add my-app.yaml  
git commit -m "Added Kubernetes deployment manifest"  
git push origin main  

# Step 3: GitOps tool (ArgoCD, Flux) syncs the changes automatically  

✅ Pros:
✔️ Version-controlled deployments
✔️ Automated rollbacks with Git history
✔️ Faster and reliable Kubernetes management

Popular GitOps Tools for Kubernetes:

• ArgoCD – Declarative continuous delivery for Kubernetes
• FluxCD – Kubernetes-native continuous delivery

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🔹 GitHub Actions & GitLab CI/CD for GitOps

CI/CD pipelines in GitHub and GitLab enable automated testing and deployment.

GitHub Actions for GitOps

yaml

name: Deploy to Kubernetes
on: push
jobs:
  deploy:
    runs-on: ubuntu-latest
    steps:
      - name: Checkout Code
        uses: actions/checkout@v2

      - name: Set up Kubectl
        uses: azure/setup-kubectl@v1
        with:
          version: 'latest'

      - name: Apply Kubernetes Manifest
        run: kubectl apply -f my-app.yaml

🚀 GitOps with CI/CD:
✔️ Automates infrastructure deployment
✔️ Ensures every code change is tested & deployed
✔️ Maintains audit logs & history in Git

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🔹 Summary & Best Practices

✅ Use Git as the single source of truth for infrastructure
✅ Implement ArgoCD or Flux for automated sync
✅ Automate deployments using GitHub Actions or GitLab CI/CD
✅ Maintain strict access control to Git repositories

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GitOps is revolutionizing infrastructure management, making it faster, more secure, and fully automated. 🚀

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