Without a doubt, Flux is now one of the most popular tools for GitOps. Form3 have been using Flux extensively for PR based operations of our Kubernetes clusters, which has resulted in a great developer experience for their growing engineering teams. However, Flux Kustomize overlays have proven insufficient for Form3's complex business needs, which involve multi-cloud workloads and controlled releases between environments. As a result, the Tooling team at Form3 have written their own tool, k8s-promoter. It automates the promotion of workloads by creating pull requests which copy manifests to the target cluster. Then, Flux reconciles manifests from the directory structure and correctly promotes workloads. This talk will cover: - How the typical commit/deploy flow at Form3 looks, as well as how they use GitOps - Why the tooling Team have decided to use promotion via duplication - Architecture and design details of k8s-promoter - A demo of the deploy flow using k8s-promoter - Lessons learned and future improvements for the project Join this talk to learn from the journey of solving the problem of environment promotion at Form3!
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