iankelling.org Git - automated-distro-installer/blob - arch-pxe

   1 #!/bin/bash -lx
   2 # Copyright (C) 2016 Ian Kelling
   3
   4 # This program is free software; you can redistribute it and/or
   5 # modify it under the terms of the GNU General Public License
   6 # as published by the Free Software Foundation; either version 2
   7 # of the License, or (at your option) any later version.
   8
   9 # This program is distributed in the hope that it will be useful,
  10 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  11 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12 # GNU General Public License for more details.
  13
  14 # You should have received a copy of the GNU General Public License
  15 # along with this program; if not, write to the Free Software
  16 # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
  17
  18 # Setup arch pxe boot server from the base image.
  19 #
  20
  21 set -eE -o pipefail
  22 trap 'echo "$0:$LINENO:error: \"$BASH_COMMAND\" returned $?" >&2' ERR
  23
  24 usage() {
  25     cat <<EOF
  26 Usage: ${0##*/}
  27 Setup arch pxe boot server from the base image
  28
  29 Requires manually downloading image. Image path is hardcoded below to
  30 /a/opt/image_name without .iso on the end. adjust the code for a new image. After this, run pxe-server.
  31 HOST|default arch to enable it.
  32
  33 -h|--help  Print help and exit.
  34 EOF
  35     exit $1
  36 }
  37
  38 case $1 in
  39     -h|--help) usage ;;
  40 esac
  41
  42
  43 x="$(readlink -f "$BASH_SOURCE")"
  44 script_dir="${x%/*}"
  45 cd /a/opt
  46 iso="parabola-systemd-cli-x86_64-netinstall-2017.10.18-00.07-alpha"
  47 rm -rf $iso
  48 ex $iso.iso
  49 n=parabola
  50 if [[ ! -e $iso/parabola ]]; then
  51     n=arch
  52 fi
  53 sfs=$iso/$n/x86_64/*.sfs
  54
  55 sed -i --follow-symlinks -f - $iso/$n/boot/syslinux/${n}iso_pxe64.cfg <<EOF
  56 1itotaltimeout 1
  57 /^LABEL arch64_nfs/a menu default
  58 s/^APPEND .*/\0 script=arch-iso-init/
  59 EOF
  60 # based on https://blog.chendry.org/2015/02/06/automating-arch-linux-installation.html
  61 # and https://wiki.archlinux.org/index.php/Remastering_the_Install_ISO
  62
  63 s rm -rf squashfs-root # remove any existing folder
  64 s unsquashfs $sfs
  65 s mkdir -p squashfs-root/root/.ssh
  66 s chmod 755 squashfs-root/root/.ssh
  67 s cp ~/.ssh/home.pub squashfs-root/root/.ssh/authorized_keys
  68
  69 s cp $script_dir/arch-iso-init squashfs-root/root
  70 s rm $sfs
  71 s mksquashfs squashfs-root $sfs -comp xz
  72 # file transfer to wrt is slow, so remove some useless files
  73 rm -f $iso/$n/i686/airootfs.sfs $iso/$n/boot/i686/${n}iso.img
  74 pushd $(dirname $sfs); md5sum ${sfs##*/} > airootfs.md5; popd
  75
  76 # seems if you've done a pxe boot, mounted the nfs,
  77 # then shutdown, it's still busy.
  78 ssh wrt "/etc/init.d/nfsd stop; \
  79 { ! mount | grep /run/archiso/bootmnt || umount /run/archiso/bootmnt; } && \
  80 rm -rf /mnt/usb/$iso"
  81 scp -r $iso wrt:/mnt/usb
  82 ssh wrt "cd /mnt/usb && rm -f tftpboot && ln -s $iso tftpboot"
  83
  84 # The default settings in the installer expect to find the NFS at /run/archiso/bootmnt
  85
  86 # background: great documentation at
  87 # https://wiki.archlinux.org/index.php/PXE
  88 # arch can do netboot like ubuntu etc, but the docs look a little
  89 # complicated, so fuck it, we use nfs cuz it's easy
  90
  91 rm -rf $iso
  92 s rm -rf squashfs-root