diagram {
   API; Conductor; Baremetal; iPXE; IPA;
   activation = none;
   span_height = 1;
   edge_length = 250;
   default_note_color = white;
   default_fontsize = 14;

   Conductor -> Baremetal [label = "Conductor turns power on"];
   Baremetal -> iPXE [label = "Baremetal reads kernel/ramdisk and starts boot"];
   Baremetal -> Baremetal [label = "Boots IPA iPXE image"];
   Baremetal -> Baremetal [label = "IPA is started"];
   IPA -> Baremetal [label = "IPA loads configuration"];
   IPA -> API [label = "Lookup node"];
   API -> Conductor [label = "API requests conductor to generates a random token"];
   API -> IPA [label = "API responds with node UUID and token value"];
   IPA -> API [label = "Heartbeat with agent token"];
}