Developer builds full local GitOps platform from scratch using Kubernetes, ArgoCD and Terraform

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A backend Java developer documented the process of building a complete, local GitOps platform from the ground up to deepen their understanding of Kubernetes beyond surface-level usage. The platform is structured in four layers: Terraform provisions the cluster, kind runs Kubernetes inside Docker containers locally, ArgoCD syncs the cluster state to a Git repository, and Prometheus plus Grafana handle metrics and visualization. The core principle of the setup is that Git serves as the single source of truth, meaning all cluster changes are made via commits rather than direct kubectl commands. This approach provides automatic audit trails, easy environment reproduction, and simple rollbacks through git revert. The article focuses on explaining why each component exists and how they interconnect, rather than serving as a step-by-step command tutorial.

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