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Definitions

DEVICE_SUFFIX

DEVICE_SUFFIX is four lowercase hexadecimal characters derived on first boot from the last four characters of /etc/machine-id, or from the primary network interface MAC address if machine-id is unavailable. aryaos-firstboot.service writes it to /etc/aryaos/aryaos-config.txt and sets the system hostname to aryaos-xxxx (same xxxx).

Used for:

  • System hostname: aryaos-xxxx
  • Comitup WiFi hotspot SSID: AryaOS-xxxx

Do not edit DEVICE_SUFFIX manually after first boot unless you understand the impact on mDNS (aryaos-xxxx.local) and the captive WiFi SSID.

Legacy images may still contain an unused NODE_ID= line in aryaos-config.txt; it is no longer written or read by AryaOS.