GitOps
What Is GitOps?
GitOps is an operational framework that applies Git-based version control workflows to infrastructure management and application deployment. In a GitOps model, the desired state of infrastructure and application configuration is declared in Git repositories. Automated systems continuously monitor those repositories and reconcile the actual running environment to match the declared state, so any approved change to the Git repository becomes the trigger for an automated deployment.
GitOps brings the rigour of software development workflows, version history, code review, pull requests, and audit trails, to infrastructure and operations, treating infrastructure configuration as code rather than manual administrative work.
The Core Principles of GitOps
Declarative Configuration
The entire system state is described declaratively: what the environment should look like, not a procedural list of steps to get there. Kubernetes manifests, Terraform configurations, and Helm charts are common declarative formats used in GitOps workflows.
Git as the Single Source of Truth
Every infrastructure and application configuration change goes through Git. Direct manual changes to production environments are prohibited; all changes are reviewed, approved, and merged through the repository workflow. This creates an immutable audit trail for every change.
Automated Reconciliation
Agents such as Flux or Argo CD continuously compare the declared state in Git against the actual running state of the environment. When drift is detected, the agent automatically reconciles the environment back to the declared state, preventing configuration drift from accumulating undetected.
GitOps Benefits for Engineering and Operations Teams
GitOps accelerates deployment frequency by automating the path from approved code to running environment. It improves reliability through automatic drift correction. It reduces the risk of manual changes causing inconsistencies between environments and provides a complete, timestamped record of every environmental change through Git’s native history.
Key Takeaways
- GitOps uses Git repositories as the source of truth for infrastructure and application state, with automated systems enforcing that state.
- Core principles are declarative configuration, Git as the single source of truth, and automated reconciliation.
- All changes go through Git review workflows; direct manual changes to production are prohibited.
- Flux and Argo CD are the most widely used GitOps agents for Kubernetes environments.
- GitOps improves deployment velocity, reliability, auditability, and consistency across environments.