iankelling.org Git - automated-distro-installer/blob - debian-preseed

   1 #!/bin/bash
   2 # Copyright (C) 2016 Ian Kelling
   3
   4 set -eE -o pipefail
   5 trap 'echo "$0:$LINENO:error: \"$BASH_COMMAND\" returned $?" >&2' ERR
   6
   7 usage() {
   8     cat <<EOF
   9 Usage: ${0##*/} OPTIONS
  10
  11 Given a tftproot, setup a preseed in it.
  12
  13 -c            Disable ssh network console. ssh user = installer. pw = test.
  14 -d            Do debian ubuntu 14.04, default is jessie.
  15 -g GRUB_DISK  Default is sda. Not used in interactive partitioning.
  16 -h|--help     Print this help
  17 -i TFTP_IP    Ip of tftp server. this is required.
  18 -p            Stop for interactive partitioning.
  19 -t DIR        Tftp root. Default is current dir.
  20 -u USER       Username for the os install. Default is ${SUDO_USER:-$USER}
  21
  22 EOF
  23     exit $1
  24 }
  25
  26 interactive_partition=false
  27 user=${SUDO_USER:-$USER}
  28 distro=debian-jessie
  29 net_console=false
  30 grub_disk=sda
  31 while [[ $1 == -* ]]; do
  32     case $1 in
  33         -c) net_console=false; shift ;;
  34         -d) distro=ubuntu-14.04; shift ;;
  35         -g) grub_disk=$2; shift 2 ;;
  36         -i) ip=$2; shift 2 ;;
  37         -p) interactive_partition=true; shift ;;
  38         -t) cd $2; shift 2;;
  39         -u) user=$2; shift 2;;
  40         --) shift; break ;;
  41         -*|-h|--help) usage ;;
  42     esac
  43 done
  44
  45
  46 shopt -s extglob
  47 rm -rf !(netboot.tar.gz)
  48 preseed=example-preseed.txt
  49 neboot_path=main/installer-amd64/current/images/netboot/netboot.tar.gz
  50 case $distro in
  51     ubuntu-14.04)
  52         wget -q https://help.ubuntu.com/lts/installation-guide/$preseed
  53         wget -qN http://archive.ubuntu.com/ubuntu/dists/trusty/$neboot_path
  54         sed -ri --follow-symlinks 's!^tasksel tasksel/first multiselect .*!#\0!' $preseed
  55         echo 'tasksel tasksel/first multiselect ubuntu-server, openssh-server' >>$preseed
  56         ;;
  57     debian-jessie)
  58         wget -q https://www.debian.org/releases/jessie/$preseed
  59         wget -qN http://ftp.nl.debian.org/debian/dists/jessie/$neboot_path
  60         cat >>$preseed <<'EOF'
  61 tasksel tasksel/first multiselect ssh-server
  62 EOF
  63         if ! $interactive_partition; then
  64             cat >>$preseed <<EOF
  65 d-i grub-installer/bootdev string /dev/$grub_disk
  66 EOF
  67         fi
  68         ;;
  69 esac
  70 tar xzf netboot.tar.gz
  71
  72
  73 # if you set priority=critical, you can avoid a few of these questions. but
  74 # then you need to set the hostname in dhcp options
  75 # https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=755848
  76 # questions you can avoid setting in boot parameters:
  77 # console-setup/ask_detect=false keyboard-configuration/layoutcode=us
  78 # hostname=$hostname
  79 # also, it asks about partition size. I don't know the preseeded answer,
  80 # as it just says "2.0 TB" in get-selections. I would need to figure out
  81 # how to accept the default.
  82 #
  83 # you can also see what got configured on a system with this command:
  84 # sudo apt-get install debconf-utils
  85 # debconf-get-selections --installer
  86 #
  87
  88 # keymap=us is only needed for debian.
  89 pxe_cfg=${distro%-*}-installer/amd64/boot-screens/txt.cfg
  90 sed="sed -ri --follow-symlinks"
  91 $sed "s#^[[:space:]]*append[[:space:]]#\0auto priority=critical locale=en_US.UTF-8  netcfg/choose_interface=auto url=tftp://$ip/example-preseed.txt keymap=us#" $pxe_cfg
  92 # various google results say timeout x will result in doing the default thing,
  93 # but that doesn't happen. no idea why. Maybe it needed to be part of the label.
  94 echo 'totaltimeout 1' | tee -a $pxe_cfg
  95
  96 if $interactive_partition; then
  97     $sed 's/^d-i[[:space:]]partman.*/#\0/' $preseed
  98     # at least in ubuntu, this does automatic selection of boot device,
  99     # and on a server where we setup raid, it choose sda, and failed
 100     # and the whole installation could not be salvaged.
 101     $sed 's/^d-i[[:space:]]grub-installer.*/#\0/' $preseed
 102 fi
 103
 104 $sed "s#(^d-i time/zone string US/).*#\1Pacific#" $preseed
 105 $sed '/^xserver-xorg/,/[^\\$]/ s/.*/#\0/' $preseed
 106 # we set the locale in kernel args. maybe we don't need to. this overrides it.
 107 $sed 's!^d-i[[:space:]]debian-installer/locale[[:space:]].*!#\0!' $preseed
 108
 109 # for secure pass, set the shadow option with mkpasswd -s -m sha-512 < passfile
 110
 111 # the example config says this option shoudl work, but it doesn't. tried it with http too,
 112 # and tried naming it authorized_keys.
 113 #d-i network-console/authorized_keys_url tftp://tftp@10.0.0.107/id_rsa.pub
 114
 115 if $net_console; then
 116     cat >> $preseed  <<EOF
 117 d-i anna/choose_modules string network-console
 118 # this doesn't work. todo: ask debian about it
 119 #d-i network-console/authorized_keys_url http://10.0.0.2/authorized_keys
 120 d-i network-console/password password test
 121 d-i network-console/password-again password test
 122 EOF
 123 fi
 124
 125 cat >> $preseed  <<EOF
 126 d-i hw-detect/load_firmware boolean true
 127 d-i partman/default_filesystem string ext4
 128 d-i passwd/user-fullname string $user
 129 d-i passwd/username string $user
 130 # cleartext password for testing.
 131 d-i passwd/user-password password $user
 132 d-i passwd/user-password-again password $user
 133 d-i passwd/root-password password $user
 134 d-i passwd/root-password-again password $user
 135 d-i pkgsel/update-policy select unattended-upgrades
 136 d-i preseed/late_command string \
 137 in-target sed -i 's/^%sudo.*$/%sudo ALL=(ALL:ALL) NOPASSWD: ALL/g' /etc/sudoers; \
 138 in-target mkdir -p /home/$user/.ssh; \
 139 in-target /bin/sh -c "echo '$(cat ~/.ssh/home.pub)'  >> /home/$user/.ssh/authorized_keys"; \
 140 in-target chown -R $user:$user /home/$user; \
 141 in-target chmod -R go-rwx /home/$user/.ssh/authorized_keys; \
 142 in-target cp -r /home/$user/.ssh /root; \
 143 in-target usermod -a -G sudo $user;
 144 EOF