GitOps Playground

This repo serves as a starting point to explore and learn GitOps tooling in a local Kubernetes cluster.

What is GitOps?

GitOps is the automation of DevOps best practices for application management.

Key Properties:

• Git is the single source of truth
• System state is defined in a declarative manner
• CI/CD is responsible for building, testing, and deployment
• Commits are the trigger for changes to a target environment
• Changes to the environment can be monitored and provide feedback

Application Deployment Tooling

• Flux
  • Pros
    • Supports Helm and Kustomize
    • Simple approach to automatic application deployments
    • Multi-tenant support
  • Cons
    • CLI driven, no native UI support
• ArgoCD
  • Pros
    • Supports Helm and Kustomize
    • Native UI
    • Multi-tenant support
  • Cons
    • Argo deployments are a bit more involved

Local Development

Local development leverages K3D to create a local Kubernetes cluster.

Kubectl and FluxCLI are used to bootstrap the cluster.

A hello world app will be deployed via Flux and ArgoCD. The built-in Traefik ingress controller is used to proxy the applications.

URL endpoints:

• http://helloflux.localhost:8000/
• http://helloargo.localhost:8000/

Requirements

• ASDF-VM
• Docker

Usage

Run make create to create the local Kubernetes cluster and bootstrap Flux and ArgoCD.

Make Targets

❯ make
help                           View help information
asdf-bootstrap                 Install all tools through asdf-vm
flux-bootstrap                 Install flux in k3d cluster
argo-bootstrap                 Install argo in k3d cluster
bootstrap                      Perform all bootstrapping required for local development
create                         Create local development environment
clean                          Destroy local development environment