[Feature Request]: Set hostname with automatic first boot config

[spinpwr]

Which feature would you like to have?

I am about to setup a cluster of SBCs with Armbian and read about "Automatic first boot configuation": https://docs.armbian.com/User-Guide_Autoconfig/

I thought it would be great to be able to set the desired hostname from this config too, e.g. PRESET_HOSTNAME directive.

I have found that it's done in armbian-firstlogin script here. I am happy to help if you think this is a feature worth implementing, with some guidance I could make a PR for it.

Funding

• I am willing to cover expenses

[github-actions]

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[github-actions]

Jira ticket: AR-2690

[ZoomRmc]

Firstboot config runs the /root/provisioning.sh¹ script at the end, and the docs explicitly mention setting the hostname this way.
https://docs.armbian.com/User-Guide_Autoconfig/#provisioning-script

The not so obvious part is assigning unique hostnames for a cluster in a coordinated way. Some possibilities:

1. You can use meaningful suffixes, such as the MAC addresses:
   ip link show | awk '/ether/ {gsub(/:/, ""); print substr($2, 7); exit}'
2. SBC's serial number: awk '/^Serial/ {print $3}' /proc/cpuinfo
3. Curl names from a central server (could be a 10-line python script)

Footnotes

1. Note the .sh extension, docs omit it mistakenly ↩