Node lifecycle
stateDiagram-v2 [*] --> Online: PowerOn Online --> Ready: Load Config Ready --> Online: Unload Config Online --> [*]: Shutdown/PowerOff Error --> [*]: UnregisterstateDiagram-v2 [*] --> Online: PowerOn Online --> Ready: Load Config Ready --> Online: Unload Config Online --> [*]: Shutdown/PowerOff Error --> [*]: Unregister