multi cluster

A cluster boundary does not always create a new cloud identity. Inspect the workload pool and principal identifier before assuming a leaked key.

A ladder from health-checked global DNS through endpoint mirroring to mesh east-west gateways. The deciding axis is trust boundary and failure isolation, not any mesh's feature matrix.

Clusters multiply for good reasons: regions, isolation, tenancy, blast radius. The problem is not creating them, it is that cluster seven diverges from cluster three and nobody knows until an upgrade behaves differently.

One Application declaring others sounds like trivia until you need to rebuild a cluster in an afternoon or hand a team a bounded slice of the platform. Here is when the pattern earns its keep, and when ApplicationSet should replace it.

Rings, SLI gates and Git-expressed promotion: sync waves order resources inside a cluster, but fleet sequencing is an automation you design on top.

Forty healthy islands equal one blind estate. Compare the consolidation patterns honestly, keep alerting local, curate what crosses the WAN, and make the global view read-only and cheap.