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ArgoCD › App of Apps

How do you bootstrap a whole cluster with App of Apps?

Intermediate

Answer

Install ArgoCD, then apply a single root Application that references a Git directory of child apps covering platform components (ingress, monitoring, cert-manager, secrets) and workloads. Syncing the root cascades to create everything. This 'bootstrap app' is the one manual step; from there GitOps manages the cluster.
kubectl apply -n argocd -f root-app.yaml   # the only manual step
Real-world example A new cluster is fully provisioned by installing ArgoCD and applying one root app that pulls in the entire platform.

Common follow-ups: What's the single manual step? | What components go in the bootstrap set?

Multi-cluster GitOps Principles App of Apps
All 28 App of Apps questions