DevOps Intermediate
GitOps Principles¶
GitOpsKubernetesDeployment 3 min read
Git as the single source of truth for infrastructure.
Principles¶
- Declarative - desired state in code
- Versioned - everything in git
- Automatic - agent sync
- Reconciled - drift detection
Push vs Pull¶
Push: CI pushes (kubectl apply). Pull: Agent pulls from git (ArgoCD, Flux). More secure.
Tools and Implementation¶
ArgoCD and Flux are the two most popular GitOps tools for Kubernetes. ArgoCD offers a web UI with application state visualization, diff display, and a manual sync button. Flux is lighter and fully declarative — everything is configured via Custom Resources in the cluster.
The pull-based model is more secure than push-based because the cluster pulls configuration from git itself — you do not need to grant it access to the CI/CD system. Every infrastructure change goes through code review via a pull request, ensuring an audit trail and four-eyes principle. Drift detection automatically identifies manual changes in the cluster and either reverts them (hard reconciliation) or alerts the team (soft reconciliation). GitOps significantly simplifies disaster recovery — restoring a cluster means pointing a new cluster at the git repository.
Summary¶
GitOps = IaC + Git + automated reconciliation.
Need Help with Implementation?¶
Our team has experience designing and implementing modern architectures. We’re happy to help.