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How do you deploy region-specific configuration to clusters? What is the difference between targeting a cluster by server URL vs name? How do you onboard a new cluster into an existing GitOps setup? How do you deploy different app versions to different clusters (e.g., staged rollout)? Can you run ArgoCD per cluster instead of a central hub, and why? How do you deploy the same application to many clusters efficiently? How do you handle per-cluster configuration differences? What are the failure and resilience considerations for multi-cluster ArgoCD? How does ArgoCD scale to hundreds of clusters and applications? How do you handle credentials rotation for many clusters?
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How do you view aggregated application status across clusters?

Intermediate

Answer

The ArgoCD UI and `argocd app list` show all Applications with their target cluster, sync, and health, giving a fleet-wide view. Filtering by cluster/project/label helps spot which cluster has failing apps across the whole estate from one console.
argocd app list -o wide
Real-world example A single dashboard reveals that only the ap-southeast cluster has OutOfSync apps after a rollout.

Common follow-ups: How do you filter by cluster? | Where's the fleet-wide view?

Sync & Health Applications Multi-cluster
All 29 Multi-cluster questions