scriptbox/alpine-initramfs-dropbear
2024-12-11 23:38:50 +07:00
..
dropbear alpine-initramfs-dropbear: fix struck nlplug-findfs, dropbear process alive after boot stage 2024-11-04 00:39:03 +07:00
features.d alpine-initramfs-dropbear: init 2024-11-03 22:17:34 +07:00
alpine-initramfs-base alpine-initramfs: add ipv6 2024-12-10 16:30:44 +07:00
initramfs-dropbear alpine-initramfs: add ipv6 2024-12-10 16:30:44 +07:00
initramfs-dropbear-ipv6 alpine-initramfs: fix ipv6 routing priorities 2024-12-11 23:38:50 +07:00
initramfs-dropbear-ipv6.patch alpine-initramfs: fix ipv6 routing priorities 2024-12-11 23:38:50 +07:00
initramfs-dropbear.patch alpine-initramfs: add ipv6 2024-12-10 16:30:44 +07:00
README.md alpine-initramfs: add ipv6 2024-12-10 16:30:44 +07:00

Alpine Initramfs Dropbear

This script took a huge references from:

This script is modified from alpine/mkinitfs - initramfs-init.in

significant changes:

  • Add dropbear

  • After unlocked, kill all remainings dropbear and nlplug-findfs process, so no struck process reached the system.

  • optional support IPv6 unlock

Fileinfo:

alpine-initramfs-base : normal alpine initramfs file which the code is based on

initramfs-dropbear : normal dropbear version

initramfs-dropbear-ipv6: dropbear with IPv6 support

*.patch : patch file version of the code

Install

Please install dropbear before continuing

  1. copy dropbear/unlock_disk to /etc/dropbear/unlock_disk
    • Also Make sure /etc/dropbear/unlock_disk is executable! else dropbear will exit with "failed child"W
  2. copy authorized_keys to /etc/dropbear/authorized_keys
  3. copy features.d to /etc/mkinitfs/features.d
    • If using IPv6 mode, don't forget to also include features.d from alpine-initramfs-ipv6 folder.

Note:

  • if you're using Deeplerg/mk-f scripts before don't forget to change unlock_disk as i modified that one too.
  • If you're using grub make sure to install syslinux and possibly checkout /etc/default/grub and commented CMDLINE that's conflicted with update-extlinux like GRUB_CMDLINE_LINUX_DEFAULT and default_kernel_opts after that grub-mkconfig -o /boot/grub/grub.cfg

/etc/mkinitfs.conf

features="ata base ide scsi usb virtio ext4 cryptsetup keymap dropbear network"
  • features+= dropbear network

  • add ip if using in ipv6 mode

/etc/update-extlinux.conf

modules=sd-mod,usb-storage,ext4,ata_piix,virtio_net,e1000e,virtio_pci
  • if network is not working (/sys/class/net/*/address not found etc.) try adding e1000e or virtio_net virtio_pci
default_kernel_opts="cryptroot=UUID=xxx cryptdm=root quiet rootfstype=ext4 dropbear=<dropbear_port> ip=<ip> ip6=<ip6>"
  • ip= can be both static and dhcp(if supported) ip=<ip>::<gw>:<mask>::<interface> ip=dhcp

  • ip6= only static is supported ip6=client-ip/gateway-ip/interface/dns1/dns2

  • ip and ip6 is not compatible with each others! only use one.

update-extlinux
mkinitfs -i path/to/initramfs-dropbear <Kernel Version(from /lib/modules) incase in emergency CD>