tarnacious · November 18, 2018 08:30 · Nov 18, 2018
diff --git a/bootstrap_debian_image b/bootstrap_debian_image
@@ -0,0 +1,156 @@
+#!/bin/bash
+
+INCLUDES=${INCLUDES:="less,vim,sudo,openssh-server,acpid,dbus"}
+ARCH=${ARCH:=amd64}
+IMGSIZE=${IMGSIZE:=80G}
+
+clean_debian() {
+        echo "Cleaning up.."
+        [ "$MNT_DIR" != "" ] && chroot $MNT_DIR umount /proc/ /sys/ /dev/ /boot/
+        sleep 1s
+        [ "$MNT_DIR" != "" ] && umount $MNT_DIR
+        sleep 1s
+        [ "$DISK" != "" ] && qemu-nbd -d $DISK
+        sleep 1s
+        [ "$MNT_DIR" != "" ] && rm -r $MNT_DIR
+}
+
+fail() {
+        clean_debian
+        echo ""
+        echo "FAILED: $1"
+        exit 1
+}
+
+cancel() {
+        fail "CTRL-C detected"
+}
+
+if [ $# -lt 3 ]
+then
+        echo "author: Kamil Trzcinski (http://ayufan.eu)"
+        echo "license: GPL"
+        echo "usage: $0 <image-file> <hostname>" 1>&2
+        exit 1
+fi
+
+FILE=$1
+HOSTNAME=$2
+RELEASE=$3
+shift 3
+
+trap cancel INT
+
+echo "Installing $RELEASE into $FILE..."
+
+MNT_DIR=`tempfile`
+rm $MNT_DIR
+mkdir $MNT_DIR
+DISK=
+
+if [ ! -f $FILE ]; then
+    echo "Creating $FILE"
+    qemu-img create -f qcow2 $FILE $IMGSIZE
+fi
+
+BOOT_PKG="linux-image-$ARCH grub2"
+
+echo "Looking for nbd device..."
+
+modprobe nbd max_part=16 || fail "failed to load nbd module into kernel"
+
+for i in /dev/nbd*
+do
+        if qemu-nbd -c $i $FILE
+        then
+                DISK=$i
+                break
+        fi
+done
+
+[ "$DISK" == "" ] && fail "no nbd device available"
+
+echo "Connected $FILE to $DISK"
+
+echo "Partitioning $DISK..."
+sfdisk $DISK << EOF || fail "cannot partition $FILE"
+,200MiB,83,*
+;
+EOF
+
+echo "Creating boot partition..."
+mkfs.ext4 -q ${DISK}p1 || fail "cannot create /boot ext4"
+
+echo "Creating root partition..."
+mkfs.ext4 -q ${DISK}p2 || fail "cannot create / ext4"
+
+echo "Mounting root partition..."
+mount ${DISK}p2 $MNT_DIR || fail "cannot mount /"
+
+echo "Installing Debian..."
+debootstrap --include=$INCLUDES $* stable $MNT_DIR || fail "cannot install $RELEASE into $DISK"
+
+echo "Configuring system..."
+cat <<EOF > $MNT_DIR/etc/fstab
+/dev/vda1 /boot               ext4    sync 0       2
+/dev/vda2 /                   ext4    errors=remount-ro 0       1
+EOF
+
+echo $HOSTNAME > $MNT_DIR/etc/hostname
+
+cat <<EOF > $MNT_DIR/etc/hosts
+127.0.0.1       localhost
+127.0.1.1               $HOSTNAME
+
+# The following lines are desirable for IPv6 capable hosts
+::1     localhost ip6-localhost ip6-loopback
+ff02::1 ip6-allnodes
+ff02::2 ip6-allrouters
+EOF
+
+cat <<EOF > $MNT_DIR/etc/network/interfaces
+source /etc/network/interfaces.d/*
+
+auto lo
+iface lo inet loopback
+
+allow-hotplug ens2
+iface ens2 inet dhcp
+EOF
+
+mount --bind /dev/ $MNT_DIR/dev || fail "cannot bind /dev"
+chroot $MNT_DIR mount -t ext4 ${DISK}p1 /boot || fail "cannot mount /boot"
+chroot $MNT_DIR mount -t proc none /proc || fail "cannot mount /proc"
+chroot $MNT_DIR mount -t sysfs none /sys || fail "cannot mount /sys"
+LANG=C DEBIAN_FRONTEND=noninteractive chroot $MNT_DIR apt-get install -y --force-yes -q $BOOT_PKG || fail "cannot install $BOOT_PKG"
+chroot $MNT_DIR grub-install $DISK || fail "cannot install grub"
+
+cat <<EOF > $MNT_DIR/etc/default/grub
+GRUB_DEFAULT=0
+GRUB_TIMEOUT=5
+GRUB_DISTRIBUTOR=`lsb_release -i -s 2> /dev/null || echo Debian`
+GRUB_CMDLINE_LINUX_DEFAULT="console=ttyS0"
+GRUB_CMDLINE_LINUX=""
+GRUB_TERMINAL=console
+EOF
+
+chroot $MNT_DIR update-grub || fail "cannot update grub"
+chroot $MNT_DIR apt-get clean || fail "unable to clean apt cache"
+
+sed -i "s|${DISK}p1|/dev/vda1|g" $MNT_DIR/boot/grub/grub.cfg
+sed -i "s|${DISK}p2|/dev/vda2|g" $MNT_DIR/boot/grub/grub.cfg
+
+echo "Enter root password:"
+while ! chroot $MNT_DIR passwd root
+do
+        echo "Try again"
+done
+
+echo "Finishing grub installation..."
+grub-install $DISK --root-directory=$MNT_DIR --modules="biosdisk part_msdos" || fail "cannot reinstall grub"
+
+echo "SUCCESS!"
+clean_debian
+
+echo "Bye"
+exit 0