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Registry & High Availability

The service registry

The registry is the discovery hub that tracks controllers, control-planes, and clients. The Registry page gives you live visibility into your topology:

  • Instances — every active controller and control-plane, with its zone, version, node count, and uptime.
  • Leader election — see which instance currently holds leadership for scheduled work (snapshots, renewals).
  • Cleanup — remove a stale controller or control-plane that no longer reports in.

Multiple controllers share one MongoDB, elect a leader for singleton tasks, and standby nodes hydrate from registry snapshots — so the management plane keeps running through instance failures.