Bringing all the pieces together: In this final lesson, you will architect a complete enterprise-grade GitOps delivery pipeline and execute a live Cluster Disaster Recovery drill.
The Automated GitOps CI Pipeline Step
Here is the GitHub Actions step that automatically updates the image tag in your GitOps Manifests repository when a new Docker image is built:
Disaster Recovery Drill: Rebuilding a Dead Cluster in Under 3 Minutes
Imagine your cloud provider experiences a catastrophic failure and your primary Kubernetes cluster is completely deleted.
In a traditional ClickOps environment, rebuilding the infrastructure would take days of manual debugging. With GitOps and Infrastructure as Code, recovery takes 3 simple commands:
Execution Steps:
- Rebuild Infrastructure with Terraform:
bashcd terraform/environments/prod terraform apply -auto-approve
- Install ArgoCD:
bashkubectl create namespace argocd kubectl apply -n argocd -f https://raw.githubusercontent.com/argoproj/argo-cd/stable/manifests/install.yaml
- Apply the Root Bootstrap Application:
bashkubectl apply -f root-bootstrap.yaml
ArgoCD connects to your Git repository, renders all Kustomize overlays, restores secrets from Sealed Secrets, mounts Ingress routes, and resumes traffic with zero human guesswork.