Due to a ransomware attack, the wiki was reverted to a July 2022 version. . We apologize for the lack of a more recent valid backup.
...
A node begins in the NONE role. In current implementations, the first node to confirm that 1) the device has no master tied to it, and 2) has a control channel connection to the device, becomes its master. Any other nodes that subsequently discover the device become either STANDBY, if it has a connection to the device, or remain as NONE if NONE otherwise. The last case occurs when the DeviceService detects a device indirectly through the distributed store, or if a previously connected device disconnects. The mapping of roles, nodes, and devices are kept in the MastershipStore as a distributed map of DeviceIds to RoleValue model objects.
...