====== 16.8 Multi-Node Shutdown ======

[[fxdemo:04-part:16-phase-0-script-and-execution-model:start | Go To Phase 0 Script and Execution Model ]]

Phase 0 may include a multi-node shutdown script or equivalent controlled procedure.

The multi-node shutdown script stops a controlled set of implementation participants and records shutdown behavior according to the logging, status-reporting, and exception-handling baseline.

The shutdown procedure should identify:

  - Implementation participants to stop
  - Expected shutdown order or coordination pattern
  - Status reports expected during shutdown
  - Logs expected during shutdown
  - Command acknowledgements expected where control commands initiate shutdown
  - Cleanup actions performed
  - Conditions that indicate successful shutdown
  - Conditions that indicate abnormal shutdown

Shutdown supports observability and later evidence planning. A participant that fails to stop cleanly must report or record that condition according to the Health and Observability, Control Plane, or Audit and Provenance conventions applicable to the failure.

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