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Phase 6 — GitOps with ArgoCD

Replace manual kubectl apply with automated Git-based deployments.

What is GitOps?​

Git repo = single source of truth
ArgoCD = sync engine

Developer pushes to Git → ArgoCD detects change → deploys to cluster

No manual kubectl commands in production.

Install ArgoCD​

kubectl create namespace argocd

kubectl apply -n argocd \
  -f https://raw.githubusercontent.com/argoproj/argo-cd/stable/manifests/install.yaml

Verify Installation​

kubectl get pods -n argocd

Wait for all pods to be Running.

Access ArgoCD UI​

kubectl port-forward svc/argocd-server -n argocd 8080:443

Open: https://localhost:8080

Get Initial Admin Password​

kubectl -n argocd get secret argocd-initial-admin-secret \
  -o jsonpath="{.data.password}" | base64 -d

Create Your First App​

Point ArgoCD at a Git repo containing Kubernetes manifests:

Repo URL: https://github.com/you/your-k8s-manifests
Path: ./apps/my-app
Destination: https://kubernetes.default.svc
Namespace: default
Sync Policy: Automatic

Done When​

✔ ArgoCD UI accessible
✔ App synced from Git
✔ Pods deployed automatically on git push