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alpine-linux-headless-bootstrap
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README.md
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# Deploy Alpine Linux on a headless system
[Alpine Linux documentation](https://docs.alpinelinux.org/user-handbook/0.1a/Installing/setup_alpine.html) assumes one can interract with system directly with a keyboard & display.\
[Alpine Linux documentation](https://docs.alpinelinux.org/user-handbook/0.1a/Installing/setup_alpine.html) assumes **initial setup** is carried-out on a system with a keyboard & display to interract with.\
However, there are many cases where one might want to deploy a headless system, only available through a network connection (ethernet, wifi or as USB ethernet gadget).
This repo provides an **overlay file** to initially boot the headless system (leveraging Alpine distro's `initramfs` feature): it enables a basic ssh server to log-into from another Computer, in order to finalize system set-up.
This repo provides an **overlay file** to initially boot such headless system (leveraging Alpine distro's `initramfs` feature): it enables a basic ssh server to log-into from another Computer, in order to finalize system setup.
## Install procedure:
Please follow [Alpine Linux Wiki](https://wiki.alpinelinux.org/wiki/Installation#Installation_Overview) to download & create installation media for the chosen platform.\
Please follow [Alpine Linux Wiki](https://wiki.alpinelinux.org/wiki/Installation#Installation_Overview) to download & create installation media for the target platform.\
Tools provided here can be used on any plaform for any install modes (diskless, data disk, system disk).
Just add [**headless.apkovl.tar.gz**](https://github.com/macmpi/alpine-linux-headless-bootstrap/raw/main/headless.apkovl.tar.gz) overlay file at the root of Alpine Linux boot media (or onto any custom side-media) and boot the system.
Just add [**headless.apkovl.tar.gz**](https://github.com/macmpi/alpine-linux-headless-bootstrap/raw/main/headless.apkovl.tar.gz)[^1] overlay file at the root of Alpine Linux boot media (or onto any custom side-media) and boot the system.
With default network interface definitions (and SSID/pass file if using wifi), one may then access the system under `ssh` with: `ssh root@<IP>`\
(system IP address may be determined with any IP scanning tools such as `nmap`).
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Main execution steps are logged in `/var/log/messages`.
[^1]: About bundled ssh keys: as this package is essentially intended to **quickly bootstrap** system in order to configure it, it purposely embeds [some ssh keys](https://github.com/macmpi/alpine-linux-headless-bootstrap/tree/main/overlay/etc/ssh) so that bootstrapping is as fast as possible. Those (temporary) keys are moved in /tmp, so they will **not be saved/reused** once permanent configuration is set (with or without ssh server voluntarily installed in permanent setup).
## How to customize further ?
This repository may be forked/cloned/downloaded.\
@ -40,5 +42,5 @@ Execute `./make.sh` to rebuild `headless.apkovl.tar.gz` after changes.
## Credits
Thanks for the original instructions & scripts from @sodface and @davidmytton.
Thanks for the initial guides & scripts from @sodface and @davidmytton.