From: Willem Meier <wilhelm.me...@fh-kl.de> Ubuntu [lucid] template script. Allows to create an ubuntu container with the template options.
Signed-off-by: Willem Meier <wilhelm.me...@fh-kl.de> Signed-off-by: Daniel Lezcano <dlezc...@fr.ibm.com> --- configure.ac | 1 + scripts/Makefile.am | 1 + scripts/lxc-ubuntu.in | 327 +++++++++++++++++++++++++++++++++++++++++++++++++ 3 files changed, 329 insertions(+), 0 deletions(-) create mode 100644 scripts/lxc-ubuntu.in diff --git a/configure.ac b/configure.ac index e91f69e..1df6ab5 100644 --- a/configure.ac +++ b/configure.ac @@ -135,6 +135,7 @@ AC_CONFIG_FILES([ scripts/Makefile scripts/lxc-debian + scripts/lxc-ubuntu scripts/lxc-busybox scripts/lxc-fedora scripts/lxc-sshd diff --git a/scripts/Makefile.am b/scripts/Makefile.am index 803a8e0..39d13a3 100644 --- a/scripts/Makefile.am +++ b/scripts/Makefile.am @@ -1,5 +1,6 @@ bin_SCRIPTS = \ lxc-debian \ + lxc-ubuntu \ lxc-fedora \ lxc-busybox \ lxc-sshd diff --git a/scripts/lxc-ubuntu.in b/scripts/lxc-ubuntu.in new file mode 100644 index 0000000..592385e --- /dev/null +++ b/scripts/lxc-ubuntu.in @@ -0,0 +1,327 @@ +#!/bin/bash + +# +# template script for generating ubuntu/lucid container for LXC +# +# This script is based on lxc-debian (Daniel Lezcano <daniel.lezc...@free.fr>) +# + +# Copyright © 2010 Wilhelm Meier +# Author: Wilhelm Meier <wilhelm.me...@fh-kl.de> +# +# This program is free software; you can redistribute it and/or modify +# it under the terms of the GNU General Public License version 2, as +# published by the Free Software Foundation. + +# 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 General Public License for more details. + +# You should have received a copy of the GNU General Public License along +# with this program; if not, write to the Free Software Foundation, Inc., +# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. +# + +configure_ubuntu() +{ + rootfs=$1 + hostname=$2 + + # disable selinux in ubuntu + mkdir -p $rootfs/selinux + echo 0 > $rootfs/selinux/enforce + + # configure the network using the dhcp + cat <<EOF > $rootfs/etc/network/interfaces +auto lo +iface lo inet loopback + +auto eth0 +iface eth0 inet dhcp +EOF + + # set the hostname + cat <<EOF > $rootfs/etc/hostname +$hostname +EOF + # set minimal hosts + cat <<EOF > $rootfs/etc/hosts +127.0.0.1 localhost $hostname +EOF + + # provide the lxc service + cat <<EOF > $rootfs/etc/init/lxc.conf +# fake some events needed for correct startup other services + +description "Container Upstart" + +start on startup + +script + rm -rf /var/run/* + /sbin/initctl emit stopped JOB=udevtrigger + /sbin/initctl emit started JOB=udev +end script +EOF + + cat <<EOF > $rootfs/lib/init/fstab +# /lib/init/fstab: lxc system fstab +none /spu spufs gid=spu,optional 0 0 +none /tmp none defaults 0 0 +none /var/run tmpfs mode=0755,nosuid,showthrough 0 0 +none /var/lock tmpfs nodev,noexec,nosuid,showthrough 0 0 +none /lib/init/rw tmpfs mode=0755,nosuid,optional 0 0 +EOF + + # reconfigure some services + chroot $rootfs locale-gen de_DE.UTF-8 + + # remove pointless services in a container + chroot $rootfs /usr/sbin/update-rc.d -f ondemand remove + + chroot $rootfs /bin/bash -c 'cd /etc/init; for f in $(ls u*.conf); do echo $f; mv $f $f.orig; done' + chroot $rootfs /bin/bash -c 'cd /etc/init; for f in $(ls tty[2-9].conf); do echo $f; mv $f $f.orig; done' + chroot $rootfs /bin/bash -c 'cd /etc/init; for f in $(ls plymouth*.conf); do echo $f; mv $f $f.orig; done' + chroot $rootfs /bin/bash -c 'cd /etc/init; for f in $(ls hwclock*.conf); do echo $f; mv $f $f.orig; done' + chroot $rootfs /bin/bash -c 'cd /etc/init; for f in $(ls module*.conf); do echo $f; mv $f $f.orig; done' + + echo "Please change root-password !" + + echo "root:root" | chroot /usr/local/var/lib/lxc/test/rootfs chpasswd +} + +download_ubuntu() +{ + packages=dialog,apt,resolvconf,iproute,inetutils-ping,vim,dhcp3-client,ssh,lsb-release + + cache=$1 + arch=$2 + + # check the mini ubuntu was not already downloaded + mkdir -p "$cache/partial-$arch" + if [ $? -ne 0 ]; then + echo "Failed to create '$cache/partial-$arch' directory" + return 1 + fi + + # download a mini ubuntu into a cache + echo "Downloading ubuntu minimal ..." + debootstrap --verbose --variant=minbase --components=main,universe --arch=$arch --include=$packages lucid $cache/partial-$arch + if [ $? -ne 0 ]; then + echo "Failed to download the rootfs, aborting." + return 1 + fi + + mv "$1/partial-$arch" "$1/rootfs-$arch" + echo "Download complete." + + return 0 +} + +copy_ubuntu() +{ + cache=$1 + arch=$2 + rootfs=$3 + + # make a local copy of the miniubuntu + echo -n "Copying rootfs to $rootfs ..." + cp -a $cache/rootfs-$arch $rootfs || return 1 + return 0 +} + +install_ubuntu() +{ + cache="/var/cache/lxc/ubuntu" + rootfs=$1 + mkdir -p /var/lock/subsys/ + ( + flock -n -x 200 + if [ $? -ne 0 ]; then + echo "Cache repository is busy." + return 1 + fi + + arch=$(arch) + if [ "$arch" == "x86_64" ]; then + arch=amd64 + fi + + if [ "$arch" == "i686" ]; then + arch=i386 + fi + + echo "Checking cache download in $cache/rootfs-$arch ... " + if [ ! -e "$cache/rootfs-$arch" ]; then + download_ubuntu $cache $arch + if [ $? -ne 0 ]; then + echo "Failed to download 'ubuntu base'" + return 1 + fi + fi + + echo "Copy $cache/rootfs-$arch to $rootfs ... " + copy_ubuntu $cache $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 + + cat <<EOF > $path/config +# Container with network virtualized using the macvlan device driver +lxc.utsname = $name + +lxc.network.type = macvlan +lxc.network.flags = up +lxc.network.link = eth1 +lxc.network.hwaddr = 4a:49:43:49:79:03 +lxc.network.macvlan.mode = vepa + +lxc.tty = 4 +lxc.pts = 1024 +lxc.rootfs = $rootfs +lxc.mount = $path/fstab + +lxc.console = /dev/console + +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 +EOF + + cat <<EOF > $path/fstab +proc $rootfs/proc proc nodev,noexec,nosuid 0 0 +devpts $rootfs/dev/pts devpts defaults 0 0 +sysfs $rootfs/sys sysfs defaults 0 0 +EOF + + if [ $? -ne 0 ]; then + echo "Failed to add configuration" + return 1 + fi + + return 0 +} + +clean() +{ + cache="/var/cache/lxc/ubuntu" + + if [ ! -e $cache ]; then + exit 0 + fi + + # lock, so we won't purge while someone is creating a repository + ( + flock -n -x 200 + if [ $? != 0 ]; then + echo "Cache repository is busy." + exit 1 + fi + + echo -n "Purging the download cache..." + rm --preserve-root --one-file-system -rf $cache && echo "Done." || exit 1 + exit 0 + + ) 200>/var/lock/subsys/lxc +} + +usage() +{ + cat <<EOF +$1 -h|--help -p|--path=<path> --clean +EOF + return 0 +} + +options=$(getopt -o hp:n:c -l help,path:,name:,clean -- "$@") +if [ $? -ne 0 ]; then + usage $(basename $0) + exit 1 +fi +eval set -- "$options" + +while true +do + case "$1" in + -h|--help) usage $0 && exit 0;; + -p|--path) path=$2; shift 2;; + -n|--name) name=$2; shift 2;; + -c|--clean) clean=$2; shift 2;; + --) shift 1; break ;; + *) break ;; + esac +done + +if [ ! -z "$clean" -a -z "$path" ]; then + clean || exit 1 + exit 0 +fi + +type debootstrap +if [ $? -ne 0 ]; then + echo "'debootstrap' command is missing" + exit 1 +fi + +if [ -z "$path" ]; then + echo "'path' parameter is required" + exit 1 +fi + +if [ "$(id -u)" != "0" ]; then + echo "This script should be run as 'root'" + exit 1 +fi + +rootfs=$path/rootfs + +install_ubuntu $rootfs +if [ $? -ne 0 ]; then + echo "failed to install ubuntu" + exit 1 +fi + +configure_ubuntu $rootfs $name +if [ $? -ne 0 ]; then + echo "failed to configure ubuntu for a container" + exit 1 +fi + +copy_configuration $path $rootfs $name +if [ $? -ne 0 ]; then + echo "failed write configuration file" + exit 1 +fi + +if [ ! -z $clean ]; then + clean || exit 1 + exit 0 +fi -- 1.7.0.4
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