Multi‑Cluster GitOps with ArgoCD: The Operational Blueprint

The Problem We Had

As clusters multiplied, config drift and manual promotion became the norm.

The Outcome We Wanted

A scalable, repeatable way to manage many clusters with one control plane.

The Blueprint

Implementation Outline

1) Cluster registry via ArgoCD secrets 2) ApplicationSets for per‑cluster apps 3) Promotion via tags/branches

Walkthrough Files

• repo/gitops/multi-cluster/cluster-registry.yaml
• repo/gitops/multi-cluster/applicationset.yaml

What Changed

We reduced drift and made promotions predictable—without multiplying the operational burden.