2026 GITOPS MASTERCLASS

# GitOps with ArgoCD: The Complete 2026 Tutorial for DevOps Engineers

"In 2026, Git is the single source of truth for both your code and your infrastructure. GitOps with ArgoCD ensures that your live Kubernetes environment always matches what is defined in your repository—automatically."

## 1. Why GitOps is Replacing Traditional CD in Bangalore

As we move deeper into 2026, the traditional "Push-based" CI/CD model is being phased out in favor of the Pull-based GitOps model. In Bangalore's top-tier product firms like Razorpay and PhonePe, engineers use GitOps to ensure system reliability and faster disaster recovery.

With ArgoCD, the deployment process becomes declarative. If someone manually changes a setting in the Kubernetes cluster (a "drift"), ArgoCD detects it and automatically syncs it back to the desired state defined in Git.

## 2. The Four Pillars of GitOps

##### Declarative

The entire system state is described in config files.

##### Versioned

State is stored in Git with a full history of changes.

##### Automated Pull

The software agent pulls changes from Git to Cluster.

##### Continuous Sync

Live state is constantly reconciled with Git state.

## 3. Practical Lab: Installing ArgoCD on K8s

To start your GitOps journey in 2026, follow these commands to install ArgoCD in its own namespace on your Kubernetes cluster:

    # Create Namespace
    kubectl create namespace argocd

    # Install ArgoCD via Manifest
    kubectl apply -n argocd -f https://raw.githubusercontent.com/argoproj/argo-cd/stable/manifests/install.yaml

    # Access the ArgoCD API Server (Port Forward)
    kubectl port-forward svc/argocd-server -n argocd 8080:443

Mentor Tip: In a production environment in Bangalore, we always use Helm Charts to manage ArgoCD installations for better version control.

## 4. Advanced GitOps Patterns

- ✓

  ##### App-of-Apps Pattern

  For large-scale infrastructure in Bangalore MNCs, use a single "Root" ArgoCD application to manage dozens of smaller applications across multiple clusters.

- ✓

  ##### Automated Drift Detection

  Configure ArgoCD to send alerts to Slack or Microsoft Teams whenever the live cluster state deviates from your Git repository.

### Become a GitOps Expert

GitOps is the peak of the Continuous Delivery roadmap. To see how it integrates with monitoring, cloud, and security tools, visit our definitive:

Full DevOps Roadmap 2026 →