What is GitOps?
GitOps is a deployment methodology where Git is the single source of truth for your infrastructure and application state. To deploy, you push code to Git. An operator (like ArgoCD or Flux) detects the change and reconciles the actual infrastructure state with the desired state in Git.
GitOps vs Traditional CI/CD
In traditional CI/CD, the pipeline pushes changes to servers. In GitOps, the pipeline only updates Git. A separate operator pulls changes from Git and applies them. This decoupling provides better security (no pipeline needs server credentials) and auditability (every change is a Git commit).
Implementing GitOps with ArgoCD
- Store Kubernetes manifests or Helm charts in a Git repository.
- Install ArgoCD in your cluster.
- Create an ArgoCD Application pointing to your Git repo.
- ArgoCD continuously syncs the cluster state with Git.
Benefits
Complete audit trail of every deployment, easy rollbacks via git revert, declarative infrastructure, and separation of concerns between开发 and operations teams.