#!/bin/bash # This is a modified version of /usr/share/lxc/templates/lxc-debian # that comes with Ubuntu 13.04 changed to suit vagrant-lxc needs set -e if [ -r /etc/default/lxc ]; then . /etc/default/lxc fi SUITE=${SUITE:-wheezy} MIRROR=${MIRROR:-http://ftp.debian.org/debian} configure_debian() { rootfs=$1 hostname=$2 release=$2 # squeeze only has /dev/tty and /dev/tty0 by default, # therefore creating missing device nodes for tty1-4. for tty in $(seq 1 4); do if [ ! -e $rootfs/dev/tty$tty ]; then mknod $rootfs/dev/tty$tty c 4 $tty fi done # configure the inittab cat < $rootfs/etc/inittab id:3:initdefault: si::sysinit:/etc/init.d/rcS l0:0:wait:/etc/init.d/rc 0 l1:1:wait:/etc/init.d/rc 1 l2:2:wait:/etc/init.d/rc 2 l3:3:wait:/etc/init.d/rc 3 l4:4:wait:/etc/init.d/rc 4 l5:5:wait:/etc/init.d/rc 5 l6:6:wait:/etc/init.d/rc 6 # Normally not reached, but fallthrough in case of emergency. z6:6:respawn:/sbin/sulogin 1:2345:respawn:/sbin/getty 38400 console #c1:12345:respawn:/sbin/getty 38400 tty1 linux c2:12345:respawn:/sbin/getty 38400 tty2 linux c3:12345:respawn:/sbin/getty 38400 tty3 linux c4:12345:respawn:/sbin/getty 38400 tty4 linux p6::ctrlaltdel:/sbin/init 6 p0::powerfail:/sbin/init 0 EOF # disable selinux in debian mkdir -p $rootfs/selinux echo 0 > $rootfs/selinux/enforce # configure the network using the dhcp cat < $rootfs/etc/network/interfaces auto lo iface lo inet loopback auto eth0 iface eth0 inet dhcp EOF # set the hostname cat < $rootfs/etc/hostname $hostname EOF # set the host in case it is not set so that sudo does not complain about the host if ! (grep -q $hostname $rootfs/etc/hosts); then chroot $rootfs sed -i -e \ "s/^127.0.0.1\(\s\+\)localhost$/127.0.0.1\1localhost\n127.0.1.1\1${hostname}/g" \ /etc/hosts >/dev/null 2>&1 || true fi # set default locale cat < $rootfs/etc/locale.gen en_US.UTF-8 UTF-8 EOF echo "default locale set to en_US.UTF-8 UTF-8" chroot $rootfs locale-gen 'en_US.UTF-8' > /dev/null 2>&1 chroot $rootfs update-locale LANG='en_US.UTF-8' echo 'update-locale done' # remove pointless services in a container chroot $rootfs /usr/sbin/update-rc.d -f checkroot.sh remove chroot $rootfs /usr/sbin/update-rc.d -f umountfs remove chroot $rootfs /usr/sbin/update-rc.d -f hwclock.sh remove chroot $rootfs /usr/sbin/update-rc.d -f hwclockfirst.sh remove echo "root:vagrant" | chroot $rootfs chpasswd if ! (grep -q vagrant $rootfs/etc/passwd); then chroot $rootfs useradd --create-home -s /bin/bash vagrant echo "vagrant:vagrant" | chroot $rootfs chpasswd chroot $rootfs adduser vagrant sudo >/dev/null 2>&1 || true chroot $rootfs cp /etc/sudoers /etc/sudoers.orig >/dev/null 2>&1 || true chroot $rootfs sed -i -e \ 's/%sudo\s\+ALL=(ALL\(:ALL\)\?)\s\+ALL/%sudo ALL=NOPASSWD:ALL/g' \ /etc/sudoers >/dev/null 2>&1 || true fi return 0 } cleanup() { rm -rf ${cache}/partial rm -rf ${cache}/rootfs } extract_rootfs() { tarball=$1 arch=$2 rootfs=$3 echo "Extracting $tarball ..." mkdir -p $(dirname $rootfs) (cd `dirname $rootfs` && tar xfz $tarball) return 0 } install_debian() { rootfs=$1 release=$2 tarball=$3 mkdir -p /var/lock/subsys/ ( flock -x 200 if [ $? -ne 0 ]; then echo "Cache repository is busy." return 1 fi extract_rootfs $tarball $arch $rootfs if [ $? -ne 0 ]; then echo "Failed to copy rootfs" return 1 fi return 0 ) 200>/var/lock/subsys/lxc return $? } copy_configuration() { path=$1 rootfs=$2 name=$3 # if there is exactly one veth network entry, make sure it has an # associated hwaddr. nics=`grep -e '^lxc\.network\.type[ \t]*=[ \t]*veth' $path/config | wc -l` if [ $nics -eq 1 ]; then grep -q "^lxc.network.hwaddr" $path/config || cat <> $path/config lxc.network.hwaddr = 00:16:3e:$(openssl rand -hex 3| sed 's/\(..\)/\1:/g; s/.$//') EOF fi grep -q "^lxc.rootfs" $path/config 2>/dev/null || echo "lxc.rootfs = $rootfs" >> $path/config cat <> $path/config lxc.tty = 4 lxc.pts = 1024 lxc.utsname = ${name} # When using LXC with apparmor, uncomment the next line to run unconfined: #lxc.aa_profile = unconfined lxc.cgroup.devices.deny = a # Allow any mknod (but not using the node) lxc.cgroup.devices.allow = c *:* m lxc.cgroup.devices.allow = b *:* m # /dev/null and zero lxc.cgroup.devices.allow = c 1:3 rwm lxc.cgroup.devices.allow = c 1:5 rwm # consoles lxc.cgroup.devices.allow = c 5:1 rwm lxc.cgroup.devices.allow = c 5:0 rwm lxc.cgroup.devices.allow = c 4:0 rwm lxc.cgroup.devices.allow = c 4:1 rwm # /dev/{,u}random lxc.cgroup.devices.allow = c 1:9 rwm lxc.cgroup.devices.allow = c 1:8 rwm lxc.cgroup.devices.allow = c 136:* rwm lxc.cgroup.devices.allow = c 5:2 rwm # rtc lxc.cgroup.devices.allow = c 254:0 rwm #fuse lxc.cgroup.devices.allow = c 10:229 rwm #tun lxc.cgroup.devices.allow = c 10:200 rwm #full lxc.cgroup.devices.allow = c 1:7 rwm #hpet lxc.cgroup.devices.allow = c 10:228 rwm #kvm lxc.cgroup.devices.allow = c 10:232 rwm # mounts point lxc.mount.entry = proc proc proc nodev,noexec,nosuid 0 0 lxc.mount.entry = sysfs sys sysfs defaults 0 0 EOF if [ $? -ne 0 ]; then echo 'failed to add configuration' return 1 fi } add_ssh_key() { user=$1 if [ -n "$auth_key" -a -f "$auth_key" ]; then u_path="/home/${user}/.ssh" root_u_path="$rootfs/$u_path" mkdir -p $root_u_path cp $auth_key "$root_u_path/authorized_keys" chroot $rootfs chown -R ${user}: "$u_path" echo "Inserted SSH public key from $auth_key into /home/${user}/.ssh/authorized_keys" fi } disable_tmp_cleanup() { rootfs=$1 chroot $rootfs /usr/sbin/update-rc.d -f checkroot-bootclean.sh remove chroot $rootfs /usr/sbin/update-rc.d -f mountall-bootclean.sh remove chroot $rootfs /usr/sbin/update-rc.d -f mountnfs-bootclean.sh remove } usage() { cat <] [ -S | --auth-key ] release: the debian release (e.g. wheezy): defaults to host release on debian, otherwise uses latest stable arch: the container architecture (e.g. amd64): defaults to host arch auth-key: SSH Public key file to inject into container EOF return 0 } options=$(getopt -o a:b:hp:r:xn:Fd:C -l arch:,help,path:,release:,name:,flush-cache,auth-key:,debug:,tarball: -- "$@") if [ $? -ne 0 ]; then usage $(basename $0) exit 1 fi eval set -- "$options" release=wheezy # Default to the last Debian stable release arch=$(uname -m) # Code taken from debootstrap if [ -x /usr/bin/dpkg ] && /usr/bin/dpkg --print-architecture >/dev/null 2>&1; then arch=`/usr/bin/dpkg --print-architecture` elif type udpkg >/dev/null 2>&1 && udpkg --print-architecture >/dev/null 2>&1; then arch=`/usr/bin/udpkg --print-architecture` else arch=$(uname -m) if [ "$arch" = "i686" ]; then arch="i386" elif [ "$arch" = "x86_64" ]; then arch="amd64" elif [ "$arch" = "armv7l" ]; then arch="armel" fi fi debug=0 hostarch=$arch while true do case "$1" in -h|--help) usage $0 && exit 0;; -p|--path) path=$2; shift 2;; -n|--name) name=$2; shift 2;; -T|--tarball) tarball=$2; shift 2;; -r|--release) release=$2; shift 2;; -S|--auth-key) auth_key=$2; shift 2;; -a|--arch) arch=$2; shift 2;; -d|--debug) debug=1; shift 1;; --) shift 1; break ;; *) break ;; esac done if [ $debug -eq 1 ]; then set -x fi if [ "$arch" == "i686" ]; then arch=i386 fi if [ $hostarch = "i386" -a $arch = "amd64" ]; then echo "can't create amd64 container on i386" exit 1 fi if [ -z "$path" ]; then echo "'path' parameter is required" exit 1 fi if [ "$(id -u)" != "0" ]; then echo "This script should be run as 'root'" exit 1 fi # detect rootfs config="$path/config" if grep -q '^lxc.rootfs' $config 2>/dev/null ; then rootfs=`grep 'lxc.rootfs =' $config | awk -F= '{ print $2 }'` else rootfs=$path/rootfs fi install_debian $rootfs $release $tarball if [ $? -ne 0 ]; then echo "failed to install debian $release" exit 1 fi configure_debian $rootfs $release if [ $? -ne 0 ]; then echo "failed to configure debian $release for a container" exit 1 fi copy_configuration $path $rootfs $name if [ $? -ne 0 ]; then echo "failed write configuration file" exit 1 fi add_ssh_key vagrant # vagrant and / or plugins might mount some shared folders under /tmp by default # (like puppet manifests) and we need to make sure no shared folder gets its # contents removed because of it. For more information, please check: # https://github.com/fgrehm/vagrant-lxc/issues/68 disable_tmp_cleanup $rootfs echo "" echo "##" echo "# The default user is 'vagrant' with password 'vagrant'!" echo "# Use the 'sudo' command to run tasks as root in the container." echo "##" echo ""