Goal is to have mimimal but realistic node with network capabilities build in (ip) and bootstrapped (similar to alpine's netbot (example)). Clearlinux is interesting. This is using musl (which alpine uses) rather than glibc to support staticaly built binaries more easily.
- Given a built linux kernel (e.g.
vmlinuz-lts) - Clone and build all the various packages you want
- Write an
initscript - Build all the binaries +
initscript into a initramfs - Run/boot with qemu
- Rememebr busybox needs to be static build (see .config)
dropbear needs at least adropbear_rsa_host_keykey config or will not start see gist- Prefering openssh for end user compatability (statically built)
TODO: add iproute2 for minimal routing.
See ./build-all.sh
- Automated ci
### How do I build statically coreutils, do I even need to?
See https://lists.gnu.org/archive/html/coreutils/2019-04/msg00001.html switched to using musl.
See also
https://wiki.gentoo.org/wiki/Custom_Initramfs https://unix.stackexchange.com/a/305406 https://landley.net/writing/rootfs-howto.html https://landley.net/writing/rootfs-programming.html
- https://unix.stackexchange.com/questions/193066/how-to-unlock-account-for-public-key-ssh-authorization-but-not-for-password-aut
- https://stackoverflow.com/a/79151188
- https://z49x2vmq.github.io/2020/12/24/linux-tiny-qemu/
"Stuff like this is slowly becoming a lost art" src ooopse.
TODO: kernel inital ram disk support https://stackoverflow.com/questions/14430551/qemu-boot-error-swapper-used-greatest-stack-depth TODO READ: https://bbs.archlinux.org/viewtopic.php?pid=1378903#p1378903
"busybox qemu /bin/sh: can't access tty; job control turned off" https://github.com/brgl/busybox/blob/master/shell/cttyhack.c