Implement GitOps principles with ArgoCD for declarative, automated Kubernetes deployments. Git becomes the single source of truth for infrastructure state.

Learning Objectives

Understand GitOps principles and benefits

Install and configure ArgoCD

Deploy applications using GitOps methodology

Implement automatic sync from Git repositories

Monitor and manage deployments through ArgoCD UI

Step 1

Understand GitOps principles

Learn GitOps fundamentals before implementation.

Commands to Run

echo '# GitOps Principles:'

echo '1. Declarative - Infrastructure as code'

echo '2. Versioned - Git as single source of truth'

echo '3. Pulled automatically - No kubectl apply needed'

echo '4. Continuously reconciled - Cluster matches Git state'

What This Does

GitOps: Git repos define desired state, operators (like ArgoCD) ensure cluster matches. No manual kubectl needed. Git PR = deployment. Audit trail automatically.

Expected Outcome

Understanding of GitOps philosophy: Git repos control infrastructure, automated reconciliation, declarative configuration.

Pro Tips

1
Git becomes single source of truth
2
No manual kubectl apply in production
3
PRs provide deployment audit trail
4
Automatic drift detection and correction
5
Rollback = git revert

Common Mistakes to Avoid

⚠️Not understanding GitOps principle: Git is the source of truth
⚠️Making manual kubectl changes (bypassing GitOps)
⚠️Expecting immediate deployment (ArgoCD syncs on interval)

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303 — GitOps with ArgoCD