GitOps Workflow Implementation

Implement GitOps workflows that enable declarative, version-controlled application deployments with automated synchronization and rollback capabilities.

What is GitOps?

GitOps is a deployment methodology that uses Git repositories as the source of truth for infrastructure and application definitions. Changes are deployed automatically when configurations are updated in Git.

Core Principles

1. Declarative: System state described declaratively.
2. Versioned: All changes tracked in Git.
3. Automated: Deployments triggered by Git commits.
4. Observable: Current state vs desired state monitoring.

GitOps Tools

ArgoCD Example

apiVersion: argoproj.io/v1alpha1
kind: Application
metadata:
  name: myapp
  namespace: argocd
spec:
  project: default
  source:
    repoURL: https://github.com/myorg/myapp-config
    path: manifests
    targetRevision: HEAD
  destination:
    server: https://kubernetes.default.svc
    namespace: myapp
  syncPolicy:
    automated:
      prune: true
      selfHeal: true

Repository Structure

Application Repository

myapp/
├── src/
├── Dockerfile
├── .github/workflows/
└── README.md

Config Repository

myapp-config/
├── base/
│   ├── deployment.yaml
│   ├── service.yaml
│   └── kustomization.yaml
├── overlays/
│   ├── staging/
│   └── production/
└── README.md

Best Practices

1. Separate Concerns: Keep application code and configuration separate.
2. Environment Promotion: Use branches or directories for environments.
3. Automated Testing: Validate configurations before deployment.
4. Monitoring: Track sync status and application health.
5. Security: Implement proper access controls and secret management.

Next Steps