lesderid/digitalocean-debian-to-arch
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Code Issues 30 Releases Wiki Activity

Add an option to disable DigitalOcean-specific parts of the script

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This commit is contained in:
Les De Ridder 2016-04-28 16:00:41 +02:00
parent 022676c05f
commit 6ad33e994d
2 changed files with 42 additions and 22 deletions
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4
README.md
View File

@ -54,7 +54,9 @@ This script supports several flags, all of which are optional.
* `--target_filesystem`
The filesystem on which the Arch Linux installation should be installed.
Defaults to `btrfs`. The alternative is `ext4`.
* `--no_digitalocean`
Disables the parts of the script specific to DigitalOcean.
How it Works
------------
1. A sparse disk image is created with the same size of the droplet's disk.

60
install.sh
View File

@ -46,6 +46,9 @@ target_disklabel="gpt"
# new filesystem type (ext4/btrfs)
target_filesystem="btrfs"
# running on another VPS service (experimental)
no_digitalocean=0
# NOT EXPOSED NORMALLY: don't prompt
continue_without_prompting=0
@ -144,6 +147,12 @@ parse_flags() {
shift
break
;;
--no_digitalocean)
no_digitalocean=1
conf_key=option_acknowledged
shift
break
;;
--help)
print_help_and_exit
;;
@ -360,31 +369,34 @@ stage1_install() {
log "Formatting image ..."
local doroot_loop=$(setup_loop_device ${doroot_offset_MiB} ${doroot_size_MiB})
local archroot_loop=$(setup_loop_device ${archroot_offset_MiB} ${archroot_size_MiB})
mkfs.ext4 -L DOROOT ${doroot_loop}
[[ $no_digitalocean -eq 1 ]] || mkfs.ext4 -L DOROOT ${doroot_loop}
mkfs.${target_filesystem} -L ArchRoot ${archroot_loop}
log "Mounting image ..."
mkdir -p /d2a/work/{doroot,archroot}
mount ${doroot_loop} /d2a/work/doroot
mount ${archroot_loop} /d2a/work/archroot
log "Setting up DOROOT ..."
mkdir -p /d2a/work/doroot/etc/network
touch /d2a/work/doroot/etc/network/interfaces
cat > /d2a/work/doroot/README <<-EOF
DO NOT TOUCH FILES ON THIS PARTITION.
if [[ $no_digitalocean -eq 0 ]]; then
mount ${doroot_loop} /d2a/work/doroot
The DOROOT partition is where DigitalOcean writes passwords and other data
when a droplet is rebuilt from an image or restored from a snapshot.
If certain files are missing, restores/rebuilds will not work and you will
end up with an unusable image.
log "Setting up DOROOT ..."
mkdir -p /d2a/work/doroot/etc/network
touch /d2a/work/doroot/etc/network/interfaces
cat > /d2a/work/doroot/README <<-EOF
DO NOT TOUCH FILES ON THIS PARTITION.
The digitalocean-synchronize script also watches this partition.
If this partition (particularly etc/shadow) is written to, the script will
reset the root password to the one provided by DigitalOcean and wipe all
SSH host keys for security.
EOF
chmod 0444 /d2a/work/doroot/README
The DOROOT partition is where DigitalOcean writes passwords and other data
when a droplet is rebuilt from an image or restored from a snapshot.
If certain files are missing, restores/rebuilds will not work and you will
end up with an unusable image.
The digitalocean-synchronize script also watches this partition.
If this partition (particularly etc/shadow) is written to, the script will
reset the root password to the one provided by DigitalOcean and wipe all
SSH host keys for security.
EOF
chmod 0444 /d2a/work/doroot/README
fi
log "Downloading bootstrap tarball ..."
set -- $(wget -qO- ${archlinux_mirror}/iso/latest/sha1sums.txt |
@ -441,9 +453,12 @@ stage1_install() {
chroot /d2a/work/archroot usermod -p "${encrypted_password}" root
chroot /d2a/work/archroot systemctl enable systemd-networkd.service
chroot /d2a/work/archroot systemctl enable sshd.service
package_digitalocean_synchronize /d2a/work/archroot/dosync.pkg.tar
${chroot_pacman} -U --noconfirm /dosync.pkg.tar
rm /d2a/work/archroot/dosync.pkg.tar
if [[ $no_digitalocean -eq 0 ]]; then
package_digitalocean_synchronize /d2a/work/archroot/dosync.pkg.tar
${chroot_pacman} -U --noconfirm /dosync.pkg.tar
rm /d2a/work/archroot/dosync.pkg.tar
fi
local authkeys
if authkeys="$(wget -qO- -T5 -t1 ${meta_base}public-keys)" && test -z "${authkeys}"; then
@ -545,7 +560,10 @@ insert_into_allocation_map() {
stage2_arrange() {
local disk_sectors=$(cat /sys/block/vda/size)
local root_device=$(awk '$2 == "/" { root = $1 } END { print root }' /proc/mounts)
local root_offset_sectors=$(cat /sys/block/vda/${root_device#/dev/}/start)
local root_offset_sectors=0
if [[ $root_device != "/dev/vda" ]]; then
root_offset_sectors=$(cat /sys/block/vda/${root_device#/dev/}/start)
fi
local srcdst_map=() # original source to target map
local unalloc_map=() # extents not used by either source or target (for tmpdst_map)
local tmpdst_map=() # extents on temporary redirection (allocated from unalloc_map)