Automating Container Image Updates with FluxCD (Hands-On Tutorial)

Modern GitOps workflows aim to keep your Kubernetes cluster fully synchronized with what is defined in Git. One powerful feature of Flux is Image Automation , which automatically updates container image tags in your Git repository whenever a new image becomes available. In this tutorial, we walk through how image automation works and how to troubleshoot a common issue involving Git authentication. 1. What is Flux Image Automation? FluxCD provides several components that work together to automate image updates. The workflow looks like this: Container Registry ↓ ImageRepository (scans tags) ↓ ImagePolicy (selects allowed tags) ↓ ImageUpdateAutomation (commits updates to Git) ↓ Flux Kustomization deploys updated workload Instead of manually updating image tags in Git, Flux automatically commits the new tag when a matching image appears in your container registry. 2. Repository Structure Used in This Lab Example GitOps layout: flux-minikube-lab ├── apps │ └── web-server │ ├── web-server.ya