GitOps for Deployment

GitOps is a modern approach to managing and deploying applications using Git as the single source of truth. This lesson will explore how GitOps can improve deployment processes, enhance collaboration, and increase the reliability of software releases.

• Git as Source of Truth: All configurations and deployment specifications are stored in a Git repository.
• Declarative Infrastructure: The desired state of the infrastructure is declared in configuration files.
• Automated Deployment: Changes in the Git repository trigger automated deployment processes.

The GitOps workflow consists of the following key steps:

graph TD;
    A[User makes changes] --> B[Commit changes to Git];
    B --> C[Automated CI/CD Pipeline];
    C --> D[Deploy to Environment];
    D --> E[Monitor Application State];
    E -->|If state matches desired| B;
            

1. Set up a Git repository to store your application manifests.
2. Define your application's desired state using YAML or JSON files.
3. Configure a CI/CD tool (e.g., ArgoCD, Flux) to monitor the repository.
4. Automate deployment processes based on repository changes.
5. Implement monitoring and alerting to ensure the application state remains as declared.

• Use branch protection rules to prevent unauthorized changes.
• Implement pull requests for all changes to facilitate code reviews.
• Regularly back up your Git repository.
• Monitor the health of your deployments proactively.
• Document your GitOps process for team onboarding and reference.