add arch support, fixup various things

[automated-distro-installer] / arch-init

diff --git a/arch-init b/arch-init
new file mode 100755 (executable)
index 0000000..30ec9f1
--- /dev/null
+++ b/arch-init
@@ -0,0 +1,144 @@
+#!/bin/bash -x
+
+# see t.org for how to call
+
+set -eE -o pipefail
+trap 'echo "$0:$LINENO:error: \"$BASH_COMMAND\" returned $?"' ERR
+
+cd "${BASH_SOURCE%/*}"
+
+export ROOTPW="$1"
+export hostname="$2"
+mirror=$3
+
+(( $# >= 2 )) || { echo "error: need 2 arguments"; exit 1; }
+
+case $hostname in
+    x2)
+        export grubdisk=/dev/sda
+        ;;
+    demohost)
+        export grubdisk=/dev/vda
+        ;;
+    treetowl)
+        bootid=64d495ee-c9fe-4174-b20a-6c5e47abcfa1
+        export grubdisk=$(blkid|sed -nr "/$bootid/s/^([^0-9]+).*/\1/p")
+        ;;
+    frodo)
+        rootid=e9ce7b46-9a21-4e79-b7f7-0b18acb57587
+        export grubdisk=$(blkid|sed -nr "/$rootid/s/(^[^0-9]*).*/\1/p")
+        ;;
+    *)
+        echo "unrecognized hostname: $hostname"
+        exit 1
+esac
+
+
+rm -f /etc/pacman.d/mirrorlist
+# https://wiki.archlinux.org/index.php/Mirrors#Sorting_mirrors
+
+if [[ $mirror ]]; then
+    echo "Server = $mirror" >> /etc/pacman.d/mirrorlist
+fi
+curl -s 'https://www.archlinux.org/mirrorlist/?country=US&protocol=https&ip_version=4&ip_version=6&use_mirror_status=on' |
+    sed -r 's/^[ #]*(Server *=)/\1/' >> /etc/pacman.d/mirrorlist
+
+ifclass() {
+    local var=${1/#/CLASS_}
+    [[ $hostname == $1 || ${!var} ]]
+}
+export -f ifclass
+for x in $(bash 50-host-classes); do
+    export CLASS_$x=true
+done
+
+export LUKS_DIR=/root/luks
+export HOSTNAME=$hostname
+chmod +x partition.DEFAULT
+./partition.DEFAULT
+# arch doesn't need crypttab entries for initramfs crypt partititions
+sed -ri '/^crypt_dev/d' /tmp/fai/crypttab
+mount -o subvol=/root /dev/mapper/crypt_dev_?da3 /mnt
+mkdir -p /mnt/{q,home}
+mount -o subvol=/q /dev/mapper/crypt_dev_?da3 /mnt/q
+mount -o subvol=/home /dev/mapper/crypt_dev_?da3 /mnt/home
+mkdir -p /mnt/etc
+cp /tmp/fai/{fstab,crypttab} /mnt/etc
+mkdir -p /mnt/boot
+mount /dev/?da1 /mnt/boot
+
+# https://wiki.archlinux.org/index.php/Dm-crypt/Device_encryption#Keyfiles
+cp /root/luks/host-$hostname /mnt/crypto_keyfile.bin
+
+
+shopt -s extglob
+case $hostname in
+    # these hosts are broken, not updated to new fai hyrbrid scripts.
+    frodo)
+
+        # for this system, no separate /boot, to keep partitions simple,
+        # since we want simpler backup recovery.
+        mount -U $rootid /mnt
+        ;;&
+    treetowl)
+        mount /dev/mapper/vg_treetowl00-lv02 /mnt
+        mount -U $bootid /mnt/boot
+        ;;&
+    frodo|treetowl)
+        rm -rf /mnt/!(a|i|q|f|boot) /mnt/boot/*
+        ;;
+esac
+
+
+
+if [[ $mirror ]]; then
+    echo "$0: 404 errors about core.db etc are normal,
+they will succeed using the secodary mirror"
+fi
+pacstrap /mnt base
+case $hostname in
+    frodo)
+        # the root .ssh needs to be like this,
+        # because it\'s used to get the key to mount an encrypted filesystem
+        # on top of itself.
+        d=/mnt/q/root/.ssh
+        rm -rf $d # for idempotency
+        mkdir -p $d
+        scp -oStrictHostKeyChecking=no ian@treetowl:/a/c/machine_specific/frodo/subdir_files/.ssh/* $d
+        cp .ssh/* $d
+        ln -s /q/root/.ssh /mnt/root
+        # background: errors=remount-ro is a debian installer thing. seems like
+        # not a bad idea. man mount says: The default is set in the filesystem
+        # superblock, and can be changed using tune2fs(8)
+
+        cat > /mnt/etc/fstab <<'EOF'
+UUID=e9ce7b46-9a21-4e79-b7f7-0b18acb57587  /  ext4  noatime,errors=remount-ro  0  1
+UUID=dd67766f-93c5-4ce3-9877-a1d9841dd4a4  none  swap  sw  0  0
+/dev/sr0  /media/cdrom0  udf,iso9660 user,noauto  0  0
+/dev/mapper/crypta7  /mnt/btrfs_root  btrfs  subvolid=0,noatime,noauto  0  2
+/dev/mapper/crypta7  /a  btrfs  subvol=a,noatime,noauto  0  2
+EOF
+        ;;
+    *)
+        genfstab -p /mnt > /mnt/etc/fstab
+        cp -r .ssh /mnt/root
+        cp -r /root/distro-install-common /mnt/root
+        ;;&
+    treetowl)
+        echo "UUID=a9e83bb7-d23d-4de6-ba9f-d88b887f7206  /a  ext4  noatime  0 2" >> /mnt/etc/fstab
+        ;;
+esac
+
+cp /root/arch-init-chroot /mnt/root
+# for manual commands, arch-chroot /mnt bash
+arch-chroot /mnt /root/arch-init-chroot
+
+# this gets mounted in chroot so we have to do it outside
+rm -f /mnt/etc/resolv.conf
+ln -s /run/systemd/resolve/resolv.conf /mnt/etc/resolv.conf
+
+# not necsesary, but makes reboot go fast.
+umount -R /mnt
+
+# causes 255 exit code, so doing this from the caller script.
+# reboot now