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

   1 #!/bin/bash -x
   2
   3 # see t.org for how to call
   4
   5 set -eE -o pipefail
   6 trap 'echo "$0:$LINENO:error: \"$BASH_COMMAND\" returned $?"' ERR
   7
   8 cd $(dirname $(readlink -f "$BASH_SOURCE"))
   9
  10 export ROOTPW="$1"
  11 export hostname="$2"
  12 mirror=$3
  13
  14 (( $# >= 2 )) || { echo "error: need 2 arguments"; exit 1; }
  15
  16 case $hostname in
  17     x2)
  18         export grubdisk=/dev/sda
  19         ;;
  20     demohost)
  21         export grubdisk=/dev/vda
  22         ;;
  23     treetowl)
  24         bootid=64d495ee-c9fe-4174-b20a-6c5e47abcfa1
  25         export grubdisk=$(blkid|sed -nr "/$bootid/s/^([^0-9]+).*/\1/p")
  26         ;;
  27     frodo)
  28         rootid=e9ce7b46-9a21-4e79-b7f7-0b18acb57587
  29         export grubdisk=$(blkid|sed -nr "/$rootid/s/(^[^0-9]*).*/\1/p")
  30         ;;
  31     *)
  32         echo "unrecognized hostname: $hostname"
  33         exit 1
  34 esac
  35
  36
  37 rm -f /etc/pacman.d/mirrorlist
  38 # https://wiki.archlinux.org/index.php/Mirrors#Sorting_mirrors
  39
  40 if [[ $mirror ]]; then
  41     echo "Server = $mirror" >> /etc/pacman.d/mirrorlist
  42 fi
  43 curl -s 'https://www.archlinux.org/mirrorlist/?country=US&protocol=https&ip_version=4&ip_version=6&use_mirror_status=on' |
  44     sed -r 's/^[ #]*(Server *=)/\1/' >> /etc/pacman.d/mirrorlist
  45
  46 # export class vars with CLASS_ in front to avoid name colissions.
  47 ifclass() {
  48     local var=${1/#/CLASS_}
  49     [[ $hostname == $1 || ${!var} ]]
  50 }
  51 export -f ifclass
  52 for x in $(bash 50-host-classes); do
  53     export CLASS_$x=true
  54 done
  55 export CLASS_TWO_DISK=true
  56 export LUKS_DIR=/root/luks
  57 export HOSTNAME=$hostname
  58 export DISTRO=arch
  59 chmod +x partition.DEFAULT
  60 ./partition.DEFAULT
  61 # arch doesn't need crypttab entries for initramfs crypt partititions
  62 export rootn=1
  63 export bootn=3
  64 export swapn=2
  65 sed -ri '/^crypt_dev/d' /tmp/fai/crypttab
  66 mount -o subvol=root_$DISTRO /dev/mapper/crypt_dev_?da$rootn /mnt
  67 mkdir -p /mnt/{q,home}
  68 mount -o subvol=/q /dev/mapper/crypt_dev_?da$rootn /mnt/q
  69 mount -o subvol=/home_$DISTRO /dev/mapper/crypt_dev_?da$rootn /mnt/home
  70 mkdir -p /mnt/boot
  71 mount /dev/?da$bootn /mnt/boot
  72
  73 # https://wiki.archlinux.org/index.php/Dm-crypt/Device_encryption#Keyfiles
  74 cp /root/luks/host-$hostname /mnt/crypto_keyfile.bin
  75 chmod 600 /mnt/crypto_keyfile.bin
  76
  77
  78 shopt -s extglob
  79 case $hostname in
  80     # these hosts are broken, not updated to new fai hyrbrid scripts.
  81     frodo)
  82
  83         # for this system, no separate /boot, to keep partitions simple,
  84         # since we want simpler backup recovery.
  85         mount -U $rootid /mnt
  86         ;;&
  87     treetowl)
  88         mount /dev/mapper/vg_treetowl00-lv02 /mnt
  89         mount -U $bootid /mnt/boot
  90         ;;&
  91     frodo|treetowl)
  92         rm -rf /mnt/!(a|i|q|f|boot) /mnt/boot/*
  93         ;;
  94 esac
  95
  96
  97
  98 if [[ $mirror ]]; then
  99     echo "$0: 404 errors about core.db etc are normal,
 100 they will succeed using the secodary mirror"
 101 fi
 102 pacstrap /mnt base
 103 cp /tmp/fai/{fstab,crypttab} /mnt/etc
 104 case $hostname in
 105     frodo)
 106         # the root .ssh needs to be like this,
 107         # because it\'s used to get the key to mount an encrypted filesystem
 108         # on top of itself.
 109         d=/mnt/q/root/.ssh
 110         rm -rf $d # for idempotency
 111         mkdir -p $d
 112         scp -oStrictHostKeyChecking=no ian@treetowl:/a/c/machine_specific/frodo/subdir_files/.ssh/* $d
 113         cp .ssh/* $d
 114         ln -s /q/root/.ssh /mnt/root
 115         # background: errors=remount-ro is a debian installer thing. seems like
 116         # not a bad idea. man mount says: The default is set in the filesystem
 117         # superblock, and can be changed using tune2fs(8)
 118
 119         cat > /mnt/etc/fstab <<'EOF'
 120 UUID=e9ce7b46-9a21-4e79-b7f7-0b18acb57587  /  ext4  noatime,errors=remount-ro  0  1
 121 UUID=dd67766f-93c5-4ce3-9877-a1d9841dd4a4  none  swap  sw  0  0
 122 /dev/sr0  /media/cdrom0  udf,iso9660 user,noauto  0  0
 123 /dev/mapper/crypta7  /mnt/btrfs_root  btrfs  subvolid=0,noatime,noauto  0  2
 124 /dev/mapper/crypta7  /a  btrfs  subvol=a,noatime,noauto  0  2
 125 EOF
 126         ;;
 127     *)
 128         echo "$0: 2nd fstab:"
 129         cat /mnt/etc/fstab
 130         cp -r .ssh /mnt/root
 131         cp -r /root/distro-install-common /mnt/root
 132         ;;&
 133     treetowl)
 134         echo "UUID=a9e83bb7-d23d-4de6-ba9f-d88b887f7206  /a  ext4  noatime  0 2" >> /mnt/etc/fstab
 135         ;;
 136 esac
 137
 138 cp /root/arch-init-chroot /mnt/root
 139 # for manual commands, arch-chroot /mnt bash
 140 arch-chroot /mnt /root/arch-init-chroot
 141
 142 # this gets mounted in chroot so we have to do it outside
 143 rm -f /mnt/etc/resolv.conf
 144 ln -s /run/systemd/resolve/resolv.conf /mnt/etc/resolv.conf
 145
 146 # not necsesary, but makes reboot go fast.
 147 umount -R /mnt
 148
 149 # causes 255 exit code, so doing this from the caller script.
 150 # reboot now