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

   1 #!/bin/bash -lx
   2
   3 # Setup arch pxe boot server from the base image.
   4 # Requires manually downloading image to /a/opt, and set it's name below.
   5
   6 set -eE -o pipefail
   7 trap 'echo "$0:$LINENO:error: \"$BASH_COMMAND\" returned $?" >&2' ERR
   8
   9 cd /a/opt
  10 iso="archlinux-2016.05.01-dual"
  11 sfs=$iso/arch/x86_64/airootfs.sfs
  12 rm -rf $iso
  13 ex $iso.iso
  14 sed -i -f - $iso/arch/boot/syslinux/archiso_pxe64.cfg <<EOF
  15 1itotaltimeout 1
  16 /^LABEL arch64_nfs/a menu default
  17 s/^APPEND .*/\0 script=myarchinit.sh/
  18 EOF
  19 # based on https://blog.chendry.org/2015/02/06/automating-arch-linux-installation.html
  20 # and https://wiki.archlinux.org/index.php/Remastering_the_Install_ISO
  21
  22 s rm -rf squashfs-root # remove any existing folder
  23 s unsquashfs $sfs
  24 s mkdir -p squashfs-root/root/.ssh
  25 s chmod 755 squashfs-root/root/.ssh
  26 s cp ~/.ssh/id_rsa.pub squashfs-root/root/.ssh/authorized_keys
  27 s dd of=squashfs-root/root/myarchinit.sh <<EOF
  28 #!/bin/bash
  29 echo $(date) > /tmp/myarchinit.log
  30 dhcpcd eth0
  31 systemctl start sshd
  32 EOF
  33 s rm $sfs
  34 s mksquashfs squashfs-root $sfs -comp xz
  35 # file transfer to wrt is slow, so remove some useless files
  36 rm $iso/arch/i686/airootfs.sfs $iso/arch/boot/i686/archiso.img
  37 c $(dirname $sfs); md5sum ${sfs##*/} > airootfs.md5; b
  38
  39 # seems if you've done a pxe boot, mounted the nfs,
  40 # then shutdown, it's still busy.
  41 ssh wrt "/etc/init.d/nfsd stop; \
  42 { ! mount | grep /run/archiso/bootmnt || umount /run/archiso/bootmnt; } && \
  43 rm -rf /mnt/usb/$iso"
  44 scp -r $iso wrt:/mnt/usb
  45 ssh wrt "cd /mnt/usb && rm -f tftpboot && ln -s $iso tftpboot"
  46
  47 # The default settings in the installer expect to find the NFS at /run/archiso/bootmnt
  48
  49 pxe-server arch
  50
  51 # background:
  52 # great documentation at https://wiki.archlinux.org/index.php/PXE
  53 # background: arch can do netboot like ubuntu etc, but the docs look a little complicated, so fuck it,
  54 # we use nfs cuz it's easy
  55
  56 rm -rf $iso
  57 s rm -rf squashfs-root