lxc-lucid.in revision 3930b7453e9b6d3cc77bf8433f04c446da949060
525421c923d798cdea9e5691bcee1e5e5530491dStéphane Graber#!/bin/bash
525421c923d798cdea9e5691bcee1e5e5530491dStéphane Graber
fd5c4f905861964cb473cf3df3336447a9365962Stéphane Graber#
fd5c4f905861964cb473cf3df3336447a9365962Stéphane Graber# template script for generating ubuntu/lucid container for LXC
16216c83297543692b8dede52c9dd8a998758e9cStéphane Graber#
16216c83297543692b8dede52c9dd8a998758e9cStéphane Graber# This script is based on lxc-debian (Daniel Lezcano <daniel.lezcano@free.fr>)
16216c83297543692b8dede52c9dd8a998758e9cStéphane Graber#
16216c83297543692b8dede52c9dd8a998758e9cStéphane Graber
16216c83297543692b8dede52c9dd8a998758e9cStéphane Graber# Copyright � 2010 Wilhelm Meier
16216c83297543692b8dede52c9dd8a998758e9cStéphane Graber# Author: Wilhelm Meier <wilhelm.meier@fh-kl.de>
16216c83297543692b8dede52c9dd8a998758e9cStéphane Graber#
16216c83297543692b8dede52c9dd8a998758e9cStéphane Graber# This program is free software; you can redistribute it and/or modify
16216c83297543692b8dede52c9dd8a998758e9cStéphane Graber# it under the terms of the GNU General Public License version 2, as
afeecbba0359d2b4404cdf896e6b6d0b5a8443b0Serge Hallyn# published by the Free Software Foundation.
ae5c8b8ed5feb9a47c5007c986ce01ea39b5075fSerge Hallyn
9be53773792fc9e8bd173edc3b7ac7e144875387Serge Hallyn# This program is distributed in the hope that it will be useful,
0115f8fd27b1a31d367bb161a121694f92b45e62Dwight Engen# but WITHOUT ANY WARRANTY; without even the implied warranty of
20ab58c777136a449b3199e0733b62fa87ecfa61Serge Hallyn# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
20ab58c777136a449b3199e0733b62fa87ecfa61Serge Hallyn# GNU General Public License for more details.
f5dd1d532a76a1b57cf341db821eae85ea1118c5Serge Hallyn
f209d63a97a8a2df5324608fee7b0d7a494d69ebS.Çağlar Onur# You should have received a copy of the GNU General Public License along
b494d2ddf769220da1ef75fd24275ce68cdf297cSerge Hallyn# with this program; if not, write to the Free Software Foundation, Inc.,
2aa123185e055bbe2506a6210e795e0b9375e477Serge Hallyn# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
a41f104bfbd69e5f068e5ca312a2eb513d9e81b8Serge Hallyn#
72863294f63e27ac263a774aab37aace20dc1bc5Dwight Engen
72d0e1cb2facaa4b8ba2f15e311d6bb9491badb7Stéphane Graberconfigure_ubuntu()
72d0e1cb2facaa4b8ba2f15e311d6bb9491badb7Stéphane Graber{
72d0e1cb2facaa4b8ba2f15e311d6bb9491badb7Stéphane Graber rootfs=$1
72d0e1cb2facaa4b8ba2f15e311d6bb9491badb7Stéphane Graber hostname=$2
2a59a68183e55e38beedb6442938e31eb7d4749cSerge Hallyn
0a18b5458b6d0fcad9a82b96f99035254af50c7aSerge Hallyn # disable selinux in ubuntu
0a18b5458b6d0fcad9a82b96f99035254af50c7aSerge Hallyn mkdir -p $rootfs/selinux
72d0e1cb2facaa4b8ba2f15e311d6bb9491badb7Stéphane Graber echo 0 > $rootfs/selinux/enforce
72863294f63e27ac263a774aab37aace20dc1bc5Dwight Engen
72863294f63e27ac263a774aab37aace20dc1bc5Dwight Engen # configure the network using the dhcp
72863294f63e27ac263a774aab37aace20dc1bc5Dwight Engen cat <<EOF > $rootfs/etc/network/interfaces
72863294f63e27ac263a774aab37aace20dc1bc5Dwight Engenauto lo
72863294f63e27ac263a774aab37aace20dc1bc5Dwight Engeniface lo inet loopback
72863294f63e27ac263a774aab37aace20dc1bc5Dwight Engen
72863294f63e27ac263a774aab37aace20dc1bc5Dwight Engenauto eth0
72863294f63e27ac263a774aab37aace20dc1bc5Dwight Engeniface eth0 inet dhcp
16216c83297543692b8dede52c9dd8a998758e9cStéphane GraberEOF
16216c83297543692b8dede52c9dd8a998758e9cStéphane Graber
ae5c8b8ed5feb9a47c5007c986ce01ea39b5075fSerge Hallyn # set the hostname
f5dd1d532a76a1b57cf341db821eae85ea1118c5Serge Hallyn cat <<EOF > $rootfs/etc/hostname
2aa123185e055bbe2506a6210e795e0b9375e477Serge Hallyn$hostname
72863294f63e27ac263a774aab37aace20dc1bc5Dwight EngenEOF
20ab58c777136a449b3199e0733b62fa87ecfa61Serge Hallyn # set minimal hosts
20ab58c777136a449b3199e0733b62fa87ecfa61Serge Hallyn cat <<EOF > $rootfs/etc/hosts
525421c923d798cdea9e5691bcee1e5e5530491dStéphane Graber127.0.0.1 localhost $hostname
025f59ab98217b7e9caf6d3ac7e910853d95f621Serge HallynEOF
025f59ab98217b7e9caf6d3ac7e910853d95f621Serge Hallyn
025f59ab98217b7e9caf6d3ac7e910853d95f621Serge Hallyn # provide the lxc service
025f59ab98217b7e9caf6d3ac7e910853d95f621Serge Hallyn cat <<EOF > $rootfs/etc/init/lxc.conf
525421c923d798cdea9e5691bcee1e5e5530491dStéphane Graber# fake some events needed for correct startup other services
90341b9e39561e37797777a34d0589c14c0c2a68Dwight Engen
90341b9e39561e37797777a34d0589c14c0c2a68Dwight Engendescription "Container Upstart"
90341b9e39561e37797777a34d0589c14c0c2a68Dwight Engen
90341b9e39561e37797777a34d0589c14c0c2a68Dwight Engenstart on startup
90341b9e39561e37797777a34d0589c14c0c2a68Dwight Engen
90341b9e39561e37797777a34d0589c14c0c2a68Dwight Engenscript
90341b9e39561e37797777a34d0589c14c0c2a68Dwight Engen rm -rf /var/run/*.pid
90341b9e39561e37797777a34d0589c14c0c2a68Dwight Engen rm -rf /var/run/network/*
90341b9e39561e37797777a34d0589c14c0c2a68Dwight Engen /sbin/initctl emit stopped JOB=udevtrigger --no-wait
90341b9e39561e37797777a34d0589c14c0c2a68Dwight Engen /sbin/initctl emit started JOB=udev --no-wait
90341b9e39561e37797777a34d0589c14c0c2a68Dwight Engenend script
90341b9e39561e37797777a34d0589c14c0c2a68Dwight EngenEOF
9be53773792fc9e8bd173edc3b7ac7e144875387Serge Hallyn
0115f8fd27b1a31d367bb161a121694f92b45e62Dwight Engen # fix buggus runlevel with sshd
cd0bcc4958e58a2750cf9086f75649d14c83ac70Stéphane Graber cat <<EOF > $rootfs/etc/init/ssh.conf
f5dd1d532a76a1b57cf341db821eae85ea1118c5Serge Hallyn# ssh - OpenBSD Secure Shell server
f209d63a97a8a2df5324608fee7b0d7a494d69ebS.Çağlar Onur#
b494d2ddf769220da1ef75fd24275ce68cdf297cSerge Hallyn# The OpenSSH server provides secure shell access to the system.
e63b2dbc3434424ebc3c3dd288582846f011b32aStéphane Graber
a41f104bfbd69e5f068e5ca312a2eb513d9e81b8Serge Hallyndescription "OpenSSH server"
a41f104bfbd69e5f068e5ca312a2eb513d9e81b8Serge Hallyn
start on filesystem
stop on runlevel [!2345]
expect fork
respawn
respawn limit 10 5
umask 022
# replaces SSHD_OOM_ADJUST in /etc/default/ssh
oom never
pre-start script
test -x /usr/sbin/sshd || { stop; exit 0; }
test -e /etc/ssh/sshd_not_to_be_run && { stop; exit 0; }
test -c /dev/null || { stop; exit 0; }
mkdir -p -m0755 /var/run/sshd
end script
# if you used to set SSHD_OPTS in /etc/default/ssh, you can change the
# 'exec' line here instead
exec /usr/sbin/sshd
EOF
cat <<EOF > $rootfs/etc/init/console.conf
# console - getty
#
# This service maintains a console on tty1 from the point the system is
# started until it is shut down again.
start on stopped rc RUNLEVEL=[2345]
stop on runlevel [!2345]
respawn
exec /sbin/getty -8 38400 /dev/console
EOF
cat <<EOF > $rootfs/lib/init/fstab
# /lib/init/fstab: lxc system fstab
none /spu spufs gid=spu,optional 0 0
none /tmp none defaults 0 0
none /var/lock tmpfs nodev,noexec,nosuid,showthrough 0 0
none /lib/init/rw tmpfs mode=0755,nosuid,optional 0 0
EOF
# reconfigure some services
if [ -z "$LANG" ]; then
chroot $rootfs locale-gen en_US.UTF-8
chroot $rootfs update-locale LANG=en_US.UTF-8
else
chroot $rootfs locale-gen $LANG
chroot $rootfs update-locale LANG=$LANG
fi
# 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 mv $f $f.orig; done'
chroot $rootfs /bin/bash -c 'cd /etc/init; for f in $(ls tty[2-9].conf); do mv $f $f.orig; done'
chroot $rootfs /bin/bash -c 'cd /etc/init; for f in $(ls plymouth*.conf); do mv $f $f.orig; done'
chroot $rootfs /bin/bash -c 'cd /etc/init; for f in $(ls hwclock*.conf); do mv $f $f.orig; done'
chroot $rootfs /bin/bash -c 'cd /etc/init; for f in $(ls module*.conf); do mv $f $f.orig; done'
echo "Please change root-password !"
echo "root:root" | chroot $rootfs chpasswd
return 0
}
download_ubuntu()
{
packages=dialog,apt,apt-utils,resolvconf,iproute,inetutils-ping,vim,dhcp3-client,ssh,lsb-release,gnupg
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-$arch' directory"
return 1
fi
# download a mini ubuntu into a cache
echo "Downloading ubuntu lucid minimal ..."
debootstrap --verbose --variant=minbase --components=main,universe --arch=$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/lucid"
rootfs=$1
mkdir -p /var/lock/subsys/
(
flock -n -x 200
if [ $? -ne 0 ]; then
echo "Cache repository is busy."
return 1
fi
arch=$(dpkg --print-architecture)
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 lucid 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
lxc.utsname = $name
lxc.tty = 4
lxc.pts = 1024
lxc.rootfs = $rootfs
lxc.mount = $path/fstab
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
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/lucid"
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 lucid"
exit 1
fi
configure_ubuntu $rootfs $name
if [ $? -ne 0 ]; then
echo "failed to configure ubuntu lucid 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