#!/bin/bash
#
# System installer.
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU Affero General Public License as
# published by the Free Software Foundation, either version 3 of the
# License, or (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU Affero General Public License for more details.
#
# You should have received a copy of the GNU Affero General Public
# License along with this program. If not, see
# .
# Load.
source $APP_BASE/lib/hydra/functions || exit 1
hydra_config_load
# Create a logical volume.
function hydra_provision_lvcreate {
local volume="$1"
local size="$2"
local space
if [ -z "$volume" ] || [ "$size" == "0" ]; then
return
fi
if ! lvdisplay $vg/$volume &> /dev/null; then
echo "Creating logical volume $volume..."
if [ "$size" == "-1" ]; then
space="-l 100%FREE"
else
space="-L $size"
fi
# See http://forums.funtoo.org/viewtopic.php?id=1206
# https://bbs.archlinux.org/viewtopic.php?id=124615
if [ "$disable_zeroing" == "y" ]; then
hydra_sudo_run lvcreate -Z n $space -n $volume $vg
else
hydra_sudo_run lvcreate $space -n $volume $vg
fi
fi
}
# Cryptsetup wrapper.
function hydra_cryptsetup {
if [ ! -z "$1" ] && [ -b "$1" ]; then
hydra_sudo_run cryptsetup --cipher aes-xts-plain64:sha256 --key-size 512 --hash sha512 --iter-time 5000 --use-random -y -q luksFormat $1
fi
}
# Create a physical volume.
function hydra_provision_create_volume {
local volume="$1"
if [ -z "$volume" ] || [ ! -b "/dev/mapper/$vg-$volume" ]; then
return
fi
if [ "$encrypt" == "y" ]; then
echo "Creating encrypted $volume device..."
hydra_cryptsetup /dev/mapper/$vg-$volume
hydra_sudo_run cryptsetup luksOpen /dev/mapper/$vg-$volume provision-$volume
hydra_sudo_run mkfs.ext4 /dev/mapper/provision-$volume
if [ "$volume" == "root" ]; then
install_device="/dev/mapper/provision-root"
fi
else
echo "Creating $volume device..."
hydra_sudo_run mkfs.ext4 /dev/mapper/$vg-$volume
if [ "$volume" == "root" ]; then
install_device="/dev/mapper/$vg-root"
fi
fi
}
# Make sure there is provision config.
function hydra_provision_config {
local base_arch="`uname -m`"
if [ "$base_arch" == "x86_64" ]; then
base_arch="amd64"
else
base_arch="i386"
fi
hydra_user_config interactive y "Interactive mode? (y/n)"
hydra_user_config device /dev/sdb "Destination device"
hydra_user_config swap_size 2000 "Swap size (in MB, 0 to not create it)"
hydra_user_config root_size 20G "Size of root partition (-1 for all free space)"
hydra_user_config home_size 20G "Size of home partition (0 to not create it, -1 for all free space)"
hydra_user_config var_size 20G "Size of var partition (0 to not create it, -1 for all free space)"
hydra_user_config encrypt y "Encrypt volumes? (y/n)"
hydra_user_config garbage y "Pre-fill volumes with garbage? (y/n)"
hydra_user_config random_swap y "Random swap? (y/n)"
hydra_user_config disable_zeroing n "Disable zeroing of LVM volumes? (y/n)"
hydra_user_config hostname machine "Hostname"
hydra_user_config domain example.org "Domain"
hydra_user_config arch $base_arch "System arch"
hydra_user_config version jessie "Distro version"
hydra_user_config vg $hostname "Install vg"
hydra_user_config grub y "Setup GRUB? (y/n)"
hydra_user_config mirror http://http.debian.net/debian/ "Debian mirror"
# Check arch
if [ "$arch" == "armel" ] || [ "$arch" == "armhf" ]; then
echo "You probably want to run provision-raspi instead of provision"
exit 1
fi
}
# Load configuration
hydra_provision_config_load $1
# Parameters
WORK="/tmp/debootstrap"
# Get config parameters.
hydra_provision_config
# Check for requirements.
for req in debootstrap cryptsetup grub-pc lvm2 parted mdadm; do
hydra_install_package $req
done
# Warning.
if [ "$interactive" == "y" ]; then
echo "WARNING: about to create partitions on $device!"
echo "WARNING: make sure you have backups of the important data from this device!"
echo "Press ENTER to continue, Ctrl-C to abort."
read answer
fi
# Disk partitioning.
hydra_sudo_run parted -s -- $device mklabel gpt
hydra_sudo_run parted -s -- $device unit MB mkpart non-fs 2 3
hydra_sudo_run parted -s -- $device set 1 bios_grub on
if [ "$encrypt" == "y" ]; then
hydra_sudo_run parted -s -- $device unit MB mkpart ext2 3 -1
hydra_sudo_run parted -s -- $device set 2 lvm on
boot_device="$device"2
syst_device="$device"2
else
hydra_sudo_run parted -s -- $device unit MB mkpart ext2 3 200
hydra_sudo_run parted -s -- $device unit MB mkpart ext2 200 -1
hydra_sudo_run parted -s -- $device set 3 lvm on
boot_device="$device"2
syst_device="$device"3
# Use absolute path
reboot_device="`blkid | grep ^$boot_device: | cut -d ' ' -f 2 | sed -e 's/"//g'`"
fi
hydra_sudo_run parted -s -- $device set 2 boot on
# Create volumes.
echo "Creating the needed disk volumes..."
if ! pvdisplay $syst_device &> /dev/null; then
echo "Creating physical volume..."
hydra_sudo_run pvcreate $syst_device
fi
if ! vgdisplay $vg &> /dev/null; then
echo "Creating volume group..."
hydra_sudo_run vgcreate $vg $syst_device
fi
# Activate volume group
hydra_sudo_run vgchange -a y $vg
# Create swap partition
if [ "$swap_size" != "0" ]; then
hydra_provision_lvcreate swap $swap_size
fi
# Create root partition.
hydra_provision_lvcreate root $root_size
# Create home partition.
if [ "$home_size" != "0" ]; then
hydra_provision_lvcreate home $home_size
fi
# Create var partition.
if [ "$var_size" != "0" ]; then
hydra_provision_lvcreate var $var_size
fi
# Garbage.
if [ "$garbage" == "y" ]; then
echo "Filling volumes with garbage..."
hydra_sudo_run dd if=/dev/urandom of=/dev/mapper/$vg-root
if [ -b "/dev/mapper/$vg-home" ]; then
hydra_sudo_run dd if=/dev/urandom of=/dev/mapper/$vg-home
fi
if [ -b "/dev/mapper/$vg-var" ]; then
hydra_sudo_run dd if=/dev/urandom of=/dev/mapper/$vg-var
fi
if [ "$swap_size" != "0" ]; then
hydra_sudo_run dd if=/dev/urandom of=/dev/mapper/$vg-swap
fi
fi
# Make sure that the mountpoint exists
hydra_sudo_run mkdir -p $WORK
# Setup mountpoint and make sure it's not mounted due to a failed install.
if cat /proc/mounts | cut -d ' ' -f 2 | grep -q "^$WORK$"; then
hydra_sudo_run umount $WORK
for folder in proc dev home var boot sys; do
if cat /proc/mounts | cut -d ' ' -f 2 | grep -q "^$WORK/$folder$"; then
hydra_sudo_run umount $WORK/$folder
fi
done
fi
# Create swap fs.
if [ "$swap_size" != "0" ] && [ "$random_swap" != "y" ]; then
hydra_cryptsetup /dev/mapper/$vg-swap
hydra_sudo_run cryptsetup luksOpen /dev/mapper/$vg-swap provision-swap
hydra_sudo_run mkswap /dev/mapper/provision-swap
fi
# Create root fs
hydra_provision_create_volume root
# Create home fs.
if [ "$home_size" != "0" ]; then
hydra_provision_create_volume home
fi
# Create var fs.
if [ "$var_size" != "0" ]; then
hydra_provision_create_volume var
fi
# Mount root volume.
hydra_sudo_run mount $install_device $WORK/
# Mount additional volumes.
if [ "$home_size" != "0" ]; then
mkdir $WORK/home
if [ "$encrypt" == "y" ]; then
hydra_sudo_run mount /dev/mapper/provision-home $WORK/home
else
hydra_sudo_run mount /dev/mapper/$vg-home $WORK/home
fi
fi
if [ "$var_size" != "0" ]; then
hydra_sudo_run mkdir $WORK/var
if [ "$encrypt" == "y" ]; then
hydra_sudo_run mount /dev/mapper/provision-var $WORK/var
else
hydra_sudo_run mount /dev/mapper/$vg-var $WORK/var
fi
fi
# Non-interactive installation
APT_INSTALL="hydra_sudo_run LC_ALL=C DEBIAN_FRONTEND=noninteractive chroot $WORK/ apt-get install"
# Initial system install.
echo "Installing base system..."
hydra_sudo_run LC_ALL=C DEBIAN_FRONTEND=noninteractive debootstrap --arch=$arch $version $WORK/ $mirror
# Initial configuration.
echo "Applying initial configuration..."
hydra_sudo_run mount none -t proc $WORK/proc
hydra_sudo_run mount none -t sysfs $WORK/sys
hydra_sudo_run mount -o bind /dev/ $WORK/dev
echo LANG=C | $SUDO tee $WORK/etc/default/locale > /dev/null
# Resolver configuration.
echo "domain $domain" | $SUDO tee $WORK/etc/resolv.conf > /dev/null
echo "search $hostname.$domain" | $SUDO tee -a $WORK/etc/resolv.conf > /dev/null
grep nameserver /etc/resolv.conf | $SUDO tee -a $WORK/etc/resolv.conf > /dev/null
# Hostname configuration.
echo $hostname.$domain | $SUDO tee $WORK/etc/hostname > /dev/null
echo "127.0.0.1 localhost" | $SUDO tee -a $WORK/etc/hosts > /dev/null
# This ordering is important for facter correctly guess the domain name
echo "127.0.0.1 $hostname.$domain $hostname" | $SUDO tee -a $WORK/etc/hosts > /dev/null
# Invert hostname contents to avoid http://projects.puppetlabs.com/issues/2533
tac $WORK/etc/hosts | $SUDO tee $WORK/etc/hosts.new > /dev/null
hydra_sudo_run mv $WORK/etc/hosts.new $WORK/etc/hosts
# Initial upgrade.
echo "Applying initial upgrades..."
hydra_sudo_run chroot $WORK/ apt-get update
hydra_sudo_run chroot $WORK/ apt-get upgrade -y
$APT_INSTALL locales cryptsetup lvm2 initramfs-tools -y
# Crypttab.
echo "Configuring crypttab..."
echo "# " | $SUDO tee $WORK/etc/crypttab > /dev/null
if [ "$encrypt" == "y" ]; then
cat <<-EOF | $SUDO tee $WORK/etc/crypttab > /dev/null
root /dev/mapper/$vg-root none luks
EOF
fi
if [ "$home_size" != "0" ] && [ "$encrypt" == "y" ]; then
cat <<-EOF | $SUDO tee -a $WORK/etc/crypttab > /dev/null
home /dev/mapper/$vg-home none luks
EOF
fi
if [ "$var_size" != "0" ] && [ "$encrypt" == "y" ]; then
cat <<-EOF | $SUDO tee -a $WORK/etc/crypttab > /dev/null
var /dev/mapper/$vg-var none luks
EOF
fi
if [ "$swap_size" != "0" ] && [ "$random_swap" == "y" ]; then
cat <<-EOF | $SUDO tee -a $WORK/etc/crypttab > /dev/null
swap /dev/mapper/$vg-swap /dev/random swap,cipher=aes-xts-plain64:sha256
EOF
fi
if [ "$swap_size" != "0" ] && [ "$random_swap" != "y" ]; then
cat <<-EOF | $SUDO tee -a $WORK/etc/crypttab > /dev/null
swap /dev/mapper/$vg-swap none luks,swap
EOF
fi
# Fstab.
echo "Configuring fstab..."
echo "" | $SUDO tee $WORK/etc/fstab > /dev/null
if [ "$swap_size" != "0" ]; then
cat <<-EOF | $SUDO tee -a $WORK/etc/fstab > /dev/null
/dev/mapper/swap none swap sw 0 0
EOF
fi
if [ "$encrypt" == "y" ]; then
cat <<-EOF | $SUDO tee -a $WORK/etc/fstab > /dev/null
/dev/mapper/root / ext4 defaults,errors=remount-ro 0 1
EOF
else
cat <<-EOF | $SUDO tee -a $WORK/etc/fstab > /dev/null
/dev/mapper/$vg-root / ext4 defaults,errors=remount-ro 0 1
EOF
fi
if [ "$home_size" != "0" ]; then
if [ "$encrypt" == "y" ]; then
cat <<-EOF | $SUDO tee -a $WORK/etc/fstab > /dev/null
/dev/mapper/home /home ext4 defaults,errors=remount-ro 0 2
EOF
else
cat <<-EOF | $SUDO tee -a $WORK/etc/fstab > /dev/null
/dev/mapper/$vg-home /home ext4 defaults,errors=remount-ro 0 2
EOF
fi
fi
if [ "$var_size" != "0" ]; then
if [ "$encrypt" == "y" ]; then
cat <<-EOF | $SUDO tee -a $WORK/etc/fstab > /dev/null
/dev/mapper/var /var ext4 defaults,errors=remount-ro 0 2
EOF
else
cat <<-EOF | $SUDO tee -a $WORK/etc/fstab > /dev/null
/dev/mapper/$vg-var /var ext4 defaults,errors=remount-ro 0 2
EOF
fi
fi
# Kernel.
echo "Installing kernel..."
cat <<-EOF | $SUDO tee $WORK/etc/initramfs-tools/modules > /dev/null
dm-mod
dm-crypt
dm-raid
aes
twofish
sha256
EOF
cat <<-EOF | $SUDO tee $WORK/etc/kernel-img.conf > /dev/null
do_initrd = Yes
EOF
if [ "$arch" == "i386" ]; then
kernel_arch="686"
else
kernel_arch="$arch"
fi
# Kernel.
$APT_INSTALL linux-image-$kernel_arch -y
# Initramfs.
echo "Creating initramfs..."
hydra_sudo_run chroot $WORK update-initramfs -v -u
# Grub.
if [ "$grub" == "y" ]; then
if [ "$encrypt" != "y" ]; then
echo "Boot device setup..."
hydra_sudo_run mkfs.ext4 $boot_device
hydra_sudo_run mount $boot_device $WORK/boot
echo "$reboot_device /boot ext4 defaults,errors=remount-ro 0 2" | $SUDO tee -a $WORK/etc/fstab > /dev/null
fi
echo "Setting up GRUB..."
$APT_INSTALL grub-pc -y
if [ "$encrypt" == "y" ]; then
echo '' | $SUDO tee -a $WORK/etc/default/grub > /dev/null
echo '# Full Disk Encryption Support' | $SUDO tee -a $WORK/etc/default/grub > /dev/null
echo 'GRUB_ENABLE_CRYPTODISK=y' | $SUDO tee -a $WORK/etc/default/grub > /dev/null
echo 'GRUB_PRELOAD_MODULES="lvm cryptodisk mdraid1x"' | $SUDO tee -a $WORK/etc/default/grub > /dev/null
hydra_sudo_run chroot $WORK/ update-grub
hydra_sudo_run chroot $WORK/ grub-install --recheck --force $device
# Fix menu entry
hydra_sudo_run sed -i -e "s|root=/dev/mapper/provision-root|root=/dev/mapper/root|g" $WORK/boot/grub/grub.cfg
fi
fi
# Utils.
echo "Installing basic utilities..."
$APT_INSTALL screen cron lsb-release openssl -y
# Networking.
hydra_provision_networking
# Ssh.
echo "Installing OpenSSH daemon..."
$APT_INSTALL openssh-server -y
hydra_sudo_run chroot $WORK/ service ssh stop
# Accounts.
echo "Installing sudo..."
$APT_INSTALL sudo -y
echo "Choose a root password."
hydra_sudo_run chroot $WORK passwd root
# Fingerprints
hydra_provision_fingerprints
# Turn off device
hydra_sudo_run umount $WORK/sys $WORK/proc $WORK/dev $WORK
hydra_sudo_run cryptsetup luksClose provision-swap
hydra_sudo_run cryptsetup luksClose provision-root
hydra_sudo_run vgchange -a n $vg
cat <<-EOF
Now proceeed with final steps:
- Create an user account with sudo privileges.
- Network setup.
- Review fstab, crypttab and optional GRUB configuration.
See https://padrao.fluxo.info/install for more information.
EOF