#!/bin/bash # -*- mode:shell-mode;tab-width:2;indent-tabs-mode:nil;coding:utf-8 -*- # vim: ft=shell syn=shell fileencoding=utf-8 sw=2 ts=2 ai eol et si # This is a modified version of /usr/share/lxc/templates/lxc-debian # that comes with Ubuntu 12.10 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=$3 # 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 EOF echo '/etc/inittab created' # disable selinux in debian mkdir -p $rootfs/selinux echo 0 > $rootfs/selinux/enforce echo 'selinux disabled' # configure the network using the dhcp cat < $rootfs/etc/network/interfaces # This file describes the network interfaces available on your system # and how to activate them. For more information, see interfaces(5). # The loopback network interface auto lo iface lo inet loopback auto eth0 iface eth0 inet dhcp EOF echo 'network configured (dhcp on eth0)' # set the hostname cat < $rootfs/etc/hostname $hostname EOF echo "/etc/hostname created (${hostname})" # set dhcp hostname cat <> $rootfs/etc/dhcp/dhclient.conf send host-name "$hostname"; EOF echo 'dhcp hostname set' if [ ! -z "${LANG}" ]; then # set default locale cat < $rootfs/etc/locale.gen ${LANG} UTF-8 EOF echo "default locale set to ${LANG} UTF-8" chroot $rootfs locale-gen ${LANG} > /dev/null 2>&1 chroot $rootfs update-locale LANG=${LANG} echo 'update-locale done' fi # set proxy if any if [ ! -z "${HTTP_PROXY}" ]; then cat < $rootfs/etc/apt/apt.conf.d/10proxy Acquire::http::Proxy "${HTTP_PROXY}"; Acquire::ftp::Proxy "${HTTP_PROXY}"; Acquire::ftp::Timeout "15"; Acquire::ftp::Passive "true"; Acquire::ftp::Proxy::Passive "true"; EOF echo "Apt default proxy set to ${HTTP_PROXY}" cat <> $rootfs/etc/environment HTTP_PROXY=${HTTP_PROXY} HTTPS_PROXY=${HTTP_PROXY} FTP_PROXY=${HTTP_PROXY} EOF echo "proxy ${HTTP_PROXY} added to /etc/environment" fi # recommends are as of now still abused in many packages cat < $rootfs/etc/apt/apt.conf.d/90recommends APT::Install-Recommends "0"; APT::Install-Suggests "0"; EOF echo '/etc/apt/apt.conf.d/90recommends created' # set default release cat < $rootfs/etc/apt/apt.conf.d/30release DPkg::Default-Release "${release}"; APT::Default-Release "${release}"; EOF echo '/etc/apt/apt.conf.d/30release created' # set minimal hosts cat < $rootfs/etc/hosts 127.0.0.1 localhost 127.0.1.1 $hostname.vagrantup.com $hostname # The following lines are desirable for IPv6 capable hosts ::1 ip6-localhost ip6-loopback fe00::0 ip6-localnet ff00::0 ip6-mcastprefix ff02::1 ip6-allnodes ff02::2 ip6-allrouters EOF # remove pointless services in a container for service in checkroot \ umountfs \ hwclock.sh \ hwclockfirst.sh \ mountall.sh ; do chroot $rootfs /usr/sbin/update-rc.d -f $service remove > /dev/null 2>&1 echo "service ${service} removed from init" done # suppress log level output for udev #sed -i "s/=\"err\"/=0/" $rootfs/etc/udev/udev.conf 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 ${cache}/partial-${SUITE}-${arch} rm -rf ${cache}/rootfs-${SUITE}-${arch} } extract_rootfs() { tarball=$1 arch=$2 rootfs=$3 echo "Extracting $tarball ..." mkdir -p $(dirname $rootfs) # Make sure the rootfs does not exist before extracting rm -rf $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 arch=$4 release=$5 cat <> $path/fstab none $rootfs/dev/pts devpts defaults 0 0 none $rootfs/proc proc defaults 0 0 none $rootfs/sys sysfs defaults 0 0 none $rootfs/dev/shm tmpfs defaults 0 0 EOF cat <> $path/config lxc.tty = 4 lxc.pts = 1024 lxc.rootfs = ${rootfs} lxc.cgroup.devices.deny = a # /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 # mounts point #lxc.mount.entry=proc $rootfs/proc proc nodev,noexec,nosuid 0 0 #lxc.mount.entry=devpts $rootfs/dev/pts devpts defaults 0 0 #lxc.mount.entry=sysfs $rootfs/sys sysfs defaults 0 0 lxc.mount = ${path}/fstab lxc.utsname = ${name} # networking lxc.network.type = veth lxc.network.flags = up # Bridged network #lxc.network.link = br42 lxc.network.name = eth0 # It is fine to be commented out # Warn: interface name 'vethXXXX' too long (>15) #lxc.network.veth.pair = veth${name#*-} #lxc.network.ipv4 = 10.1.1.1/24 #lxc.network.hwaddr = 00:12:34:56:78:9A lxc.network.hwaddr = \ 00:16:3e:$(openssl rand -hex 3| sed 's/\(..\)/\1:/g; s/.$//') # Limits # Set max memory lxc.cgroup.memory.limit_in_bytes = 1024M # Scheduler, works like this: You assign to vm0 the value of 10 and to vm1 # the value of 20. This means: in each CPU Second vm1 will get the double # amount of CPU cycles as vm0. Per default all values are set to 1024. #lxc.cgroup.cpu.shares = 512 # CPUs # assign first CPU to this container: #lxc.cgroup.cpuset.cpus = 0 # assign the first, the second and the last CPU #lxc.cgroup.cpuset.cpus = 0-1,3 # assign the first and the last CPU #lxc.cgroup.cpuset.cpus = 0,3 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 } 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 $rootfs "vagrant-debian-${release}" $release if [ $? -ne 0 ]; then echo "failed to configure debian $release for a container" exit 1 fi copy_configuration $path $rootfs $name $arch $release if [ $? -ne 0 ]; then echo "failed write configuration file" exit 1 fi add_ssh_key vagrant 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 ""