--- /dev/null
+#!/bin/bash
+
+#
+# lxc: linux Container library
+
+# Authors:
+# Daniel Lezcano <daniel.lezcano@free.fr>
+
+# This library is free software; you can redistribute it and/or
+# modify it under the terms of the GNU Lesser General Public
+# License as published by the Free Software Foundation; either
+# version 2.1 of the License, or (at your option) any later version.
+
+# This library 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
+# Lesser General Public License for more details.
+
+# You should have received a copy of the GNU Lesser General Public
+# License along with this library; if not, write to the Free Software
+# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+
+SUITE=${SUITE:-squeeze}
+MIRROR=${MIRROR:-http://cdn.debian.net/debian}
+
+configure_debian()
+{
+ rootfs=$1
+ hostname=$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 <<EOF > $rootfs/etc/inittab
+id:2: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
+
+ # disable selinux in debian
+ 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
+
+ # reconfigure some services
+ LANG="${LANG:-en_US.UTF-8}"
+
+ locale="$LANG $(echo $LANG | cut -d. -f2)"
+ chroot $rootfs echo "locales locales/default_environment_locale select $LANG" | chroot $rootfs sh -c "LANG=C debconf-set-selections"
+ chroot $rootfs echo "locales locales/default_environment_locale seen true" | chroot $rootfs sh -c "LANG=C debconf-set-selections"
+ chroot $rootfs echo "locales locales/locales_to_be_generated seen true" | chroot $rootfs sh -c "LANG=C debconf-set-selections"
+ chroot $rootfs sed -i -e "0,/^[# ]*$locale *$/ s/^[# ]*$locale *$/$locale/" /etc/locale.gen
+ chroot $rootfs sh -c "LANG=C dpkg-reconfigure locales -f noninteractive"
+
+ # remove pointless services in a container
+ chroot $rootfs /usr/sbin/update-rc.d -f checkroot.sh remove # S
+ chroot $rootfs /usr/sbin/update-rc.d checkroot.sh stop 09 S .
+
+ chroot $rootfs /usr/sbin/update-rc.d -f umountfs remove # 0 6
+ chroot $rootfs /usr/sbin/update-rc.d umountfs start 09 0 6 .
+
+ chroot $rootfs /usr/sbin/update-rc.d -f umountroot remove # 0 6
+ chroot $rootfs /usr/sbin/update-rc.d umountroot start 10 0 6 .
+
+ # The following initscripts don't provide an empty start or stop block.
+ # To prevent them being enabled on upgrades, we leave a start link on
+ # runlevel 3.
+ chroot $rootfs /usr/sbin/update-rc.d -f hwclock.sh remove # S 0 6
+ chroot $rootfs /usr/sbin/update-rc.d hwclock.sh start 10 3 .
+
+ chroot $rootfs /usr/sbin/update-rc.d -f hwclockfirst.sh remove # S
+ chroot $rootfs /usr/sbin/update-rc.d hwclockfirst start 08 3 .
+
+ chroot $rootfs /usr/sbin/update-rc.d -f module-init-tools remove # S
+ chroot $rootfs /usr/sbin/update-rc.d module-init-tools start 10 3 .
+
+ echo "root:root" | chroot $rootfs chpasswd
+ echo "Root password is 'root', please change !"
+
+ return 0
+}
+
+download_debian()
+{
+ packages=\
+ifupdown,\
+locales,\
+libui-dialog-perl,\
+dialog,\
+dhcp3-client,\
+netbase,\
+net-tools,\
+iproute,\
+openssh-server
+
+ cache=$1
+ arch=$2
+
+ # check the mini debian was not already downloaded
+ mkdir -p "$cache/partial-$SUITE-$arch"
+ if [ $? -ne 0 ]; then
+ echo "Failed to create '$cache/partial-$SUITE-$arch' directory"
+ return 1
+ fi
+
+ # download a mini debian into a cache
+ echo "Downloading debian minimal ..."
+ debootstrap --verbose --variant=minbase --arch=$arch \
+ --include=$packages \
+ "$SUITE" "$cache/partial-$SUITE-$arch" $MIRROR
+ if [ $? -ne 0 ]; then
+ echo "Failed to download the rootfs, aborting."
+ return 1
+ fi
+
+ mv "$1/partial-$SUITE-$arch" "$1/rootfs-$SUITE-$arch"
+ echo "Download complete."
+
+ return 0
+}
+
+copy_debian()
+{
+ cache=$1
+ arch=$2
+ rootfs=$3
+
+ # make a local copy of the minidebian
+ echo -n "Copying rootfs to $rootfs..."
+ mkdir -p $rootfs
+ rsync -a "$cache/rootfs-$SUITE-$arch"/ $rootfs/ || return 1
+ return 0
+}
+
+install_debian()
+{
+ cache="/var/cache/lxc/debian"
+ rootfs=$1
+ mkdir -p /var/lock/subsys/
+ (
+ flock -x 200
+ if [ $? -ne 0 ]; then
+ echo "Cache repository is busy."
+ return 1
+ fi
+
+ # Code taken from debootstrap
+ if [ -x /usr/bin/dpkg ] && /usr/bin/dpkg --print-architecture >/dev/null 2>&1; then
+ arch=`/usr/bin/dpkg --print-architecture`
+ elif type udpkg >/dev/null 2>&1 && udpkg --print-architecture >/dev/null 2>&1; then
+ arch=`/usr/bin/udpkg --print-architecture`
+ else
+ arch=$(arch)
+ case $arch in
+ 686) arch="i386";;
+ x86_64) arch="amd64";;
+ ppc) arch="powerpc";;
+ esac
+ fi
+
+ echo "Checking cache download in $cache/rootfs-$SUITE-$arch ... "
+ if [ ! -e "$cache/rootfs-$SUITE-$arch" ]; then
+ download_debian $cache $arch
+ if [ $? -ne 0 ]; then
+ echo "Failed to download 'debian base'"
+ return 1
+ fi
+ fi
+
+ copy_debian $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 >> $path/config << EOF
+# $path/config
+
+## Container
+lxc.utsname = $name
+lxc.rootfs = $rootfs
+lxc.tty = 4
+lxc.pts = 1024
+#lxc.console = /var/log/lxc/$name.console
+
+## Capabilities
+lxc.cap.drop = sys_admin
+
+# uncomment the next line to run the container unconfined:
+#lxc.aa_profile = unconfined
+
+## Devices
+#lxc.cgroup.devices.allow = a
+lxc.cgroup.devices.deny = a
+# /dev/null
+lxc.cgroup.devices.allow = c 1:3 rwm
+# /dev/zero
+lxc.cgroup.devices.allow = c 1:5 rwm
+# /dev/tty[1-4] 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
+# /dev/rtc
+lxc.cgroup.devices.allow = c 254:0 rwm
+
+## Limits
+#lxc.cgroup.cpu.shares = 1024
+#lxc.cgroup.cpuset.cpus = 0
+#lxc.cgroup.memory.limit_in_bytes = 256M
+#lxc.cgroup.memory.memsw.limit_in_bytes = 1G
+
+## Filesystem
+lxc.mount.entry = proc proc proc nodev,noexec,nosuid 0 0
+lxc.mount.entry = sysfs sys sysfs defaults,ro 0 0
+#lxc.mount.entry = /srv/$name srv/$name none defaults,bind 0 0
+EOF
+
+ if [ $? -ne 0 ]; then
+ echo "Failed to add configuration"
+ return 1
+ fi
+
+ return 0
+}
+
+clean()
+{
+ cache="/var/cache/lxc/debian"
+
+ if [ ! -e $cache ]; then
+ exit 0
+ fi
+
+ # lock, so we won't purge while someone is creating a repository
+ (
+ flock -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_debian $rootfs
+if [ $? -ne 0 ]; then
+ echo "failed to install debian"
+ exit 1
+fi
+
+configure_debian $rootfs $name
+if [ $? -ne 0 ]; then
+ echo "failed to configure debian for a container"
+ exit 1
+fi
+
+copy_configuration $path $rootfs
+if [ $? -ne 0 ]; then
+ echo "failed write configuration file"
+ exit 1
+fi
+
+if [ ! -z $clean ]; then
+ clean || exit 1
+ exit 0
+fi
projects / lab.git / blobdiff