In the ever-evolving landscape of DevOps practices, GitOps has emerged as a revolutionary approach to managing infrastructure and application deployments. At its core, GitOps uses Git repositories as the single source of truth for declarative infrastructure and applications. This means that every aspect of your configuration—from infrastructure specifications to application deployment parameters—is version controlled and stored in Git.
The GitOps methodology is built on several fundamental principles:
Your entire system must be described declaratively. This includes:
All configurations are stored in Git, providing:
Changes to the system are automated and pull-based, meaning:
Create a clear repository structure:
├── environments/ │ ├── production/ │ ├── staging/ │ └── development/ ├── base/ │ ├── deployments/ │ ├── services/ │ └── configmaps/ └── overlays/ └── environment-specific-configs/
Popular tools for GitOps implementation include:
Example Flux CD installation and configuration:
# Install Flux CD flux bootstrap github \ --owner=$GITHUB_USER \ --repository=fleet-infra \ --branch=main \ --path=./clusters/my-cluster \ --personal
To ensure successful GitOps implementation:
GitOps represents a significant evolution in DevOps practices, bringing increased reliability, security, and automation to infrastructure and application deployment processes. By following the principles and practices outlined in this guide, organizations can successfully implement GitOps and realize its numerous benefits.