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#multi-cluster

2 stories

DevOps & CI/CD

Argo CD at multi-cluster scale: app of apps vs ApplicationSet, hub-and-spoke vs per-cluster

Sofia Andersson · May 30, 2026 · 7 min read

We went from one cluster to nine and our Argo CD setup stopped scaling: hundreds of hand-written Application manifests and one controller everyone depended on. How app of apps and ApplicationSet compare, hub-and-spoke versus an Argo CD per cluster, and the layout we settled on.

Banner: one large shared cluster compared with several smaller isolated clusters

DevOps & CI/CD

One Kubernetes cluster or many: isolation, blast radius and cost compared

John Nguyen · Feb 22, 2025 · 9 min read

We ran everything in one big Kubernetes cluster until a CRD upgrade broke three teams at once. This guide compares one shared cluster, a cluster per environment and a cluster per team on isolation, blast radius, upgrade effort and real cost, with a worked cost model.