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Diffstat (limited to 'templates/lxc-opensuse.in')
-rw-r--r-- | templates/lxc-opensuse.in | 368 |
1 files changed, 368 insertions, 0 deletions
diff --git a/templates/lxc-opensuse.in b/templates/lxc-opensuse.in new file mode 100644 index 0000000..811876a --- /dev/null +++ b/templates/lxc-opensuse.in @@ -0,0 +1,368 @@ +#!/bin/bash + +# +# template script for generating suse container for LXC +# + +# +# lxc: linux Container library + +# Authors: +# Daniel Lezcano <daniel.lezcano@free.fr> +# Frederic Crozat <fcrozat@suse.com> + +# 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 + +DISTRO=11.4 + +configure_opensuse() +{ + rootfs=$1 + hostname=$2 + + # set network as static, but everything is done by LXC outside the container + cat <<EOF > $rootfs/etc/sysconfig/network/ifcfg-eth0 +STARTMODE='auto' +BOOTPROTO='static' +EOF + + # set default route + IP=$(/sbin/ip route | awk '/default/ { print $3 }') + echo "default $IP - -" > $rootfs/etc/sysconfig/network/routes + + # create empty fstab + touch $rootfs/etc/fstab + + # create minimal /dev + mknod -m 666 $rootfs/dev/random c 1 8 + mknod -m 666 $rootfs/dev/urandom c 1 9 + mkdir -m 755 $rootfs/dev/pts + mkdir -m 1777 $rootfs/dev/shm + mknod -m 666 $rootfs/dev/tty c 5 0 + mknod -m 600 $rootfs/dev/console c 5 1 + mknod -m 666 $rootfs/dev/tty0 c 4 0 + mknod -m 666 $rootfs/dev/tty1 c 4 1 + mknod -m 666 $rootfs/dev/tty2 c 4 2 + mknod -m 666 $rootfs/dev/tty3 c 4 3 + mknod -m 666 $rootfs/dev/tty4 c 4 4 + ln -s null $rootfs/dev/tty10 + mknod -m 666 $rootfs/dev/full c 1 7 + mknod -m 666 $rootfs/dev/ptmx c 5 2 + ln -s /proc/self/fd $rootfs/dev/fd + ln -s /proc/kcore $rootfs/dev/core + mkdir -m 755 $rootfs/dev/mapper + mknod -m 600 $rootfs/dev/mapper/control c 10 60 + mkdir -m 755 $rootfs/dev/net + mknod -m 666 $rootfs/dev/net/tun c 10 200 + + # set the hostname + cat <<EOF > $rootfs/etc/HOSTNAME +$hostname +EOF + + # do not use hostname from HOSTNAME variable + cat <<EOF >> $rootfs/etc/sysconfig/cron +unset HOSTNAME +EOF + + # set minimal hosts + cat <<EOF > $rootfs/etc/hosts +127.0.0.1 localhost $hostname +EOF + + # disable various services + # disable yast->bootloader in container + cat <<EOF > $rootfs/etc/sysconfig/bootloader +LOADER_TYPE=none +LOADER_LOCATION=none +EOF + + # cut down inittab + cat <<EOF > $rootfs/etc/inittab +id:3:initdefault: +si::bootwait:/etc/init.d/boot +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 +l6:6:wait:/etc/init.d/rc 6 +ls:S:wait:/etc/init.d/rc S +~~:S:respawn:/sbin/sulogin +p6::ctrlaltdel:/sbin/init 6 +p0::powerfail:/sbin/init 0 +cons:2345:respawn:/sbin/mingetty --noclear console screen +c1:2345:respawn:/sbin/mingetty --noclear tty1 screen +EOF + + # patch boot script, no longer needed in openSUSE 12.1 / SLE11-SP2 + patch --quiet -d $rootfs/etc/init.d/ << EOF +--- boot.orig 2011-05-26 16:03:07.000000000 +0200 ++++ boot 2011-05-26 16:03:19.000000000 +0200 +@@ -98,12 +98,12 @@ + echo "***************************************************************" + /sbin/halt -f + fi +- echo -n "Mounting devtmpfs at /dev" +- mount -n -t devtmpfs -o mode=0755 devtmpfs /dev +- rc_status -v -r ++# echo -n "Mounting devtmpfs at /dev" ++# mount -n -t devtmpfs -o mode=0755 devtmpfs /dev ++# rc_status -v -r + fi + +-cp -axT --remove-destination /lib/udev/devices /dev ++#cp -axT --remove-destination /lib/udev/devices /dev + + if test -d /sys/kernel/debug -a "$HAVE_DEBUGFS" = "1" ; then + mount -n -t debugfs debugfs /sys/kernel/debug > /dev/null 2>&1 +EOF + cat <<EOF >> $rootfs/etc/sysconfig/boot +# disable root fsck +ROOTFS_FSCK="0" +ROOTFS_BLKDEV="/dev/null" +EOF + + + # remove pointless services in a container + insserv -r -f -p $rootfs/etc/init.d boot.udev boot.udev_retry boot.md boot.lvm boot.loadmodules boot.device-mapper boot.clock boot.swap boot.klog + + echo "Please change root-password !" + echo "root:root" | chroot $rootfs chpasswd + + return 0 +} + +download_opensuse() +{ + cache=$1 + arch=$2 + + # check the mini opensuse was not already downloaded + mkdir -p "$cache/partial-$arch" + + if [ $? -ne 0 ]; then + echo "Failed to create '$cache/partial-$arch' directory" + return 1 + fi + + # download a mini opensuse into a cache + echo "Downloading opensuse minimal ..." + mkdir -p "$cache/partial-$arch/dev" + mknod -m 666 $cache/partial-$arch/dev/null c 1 3 + mknod -m 666 $cache/partial-$arch/dev/zero c 1 5 + zypper --quiet --root $cache/partial-$arch --non-interactive ar http://download.opensuse.org/distribution/$DISTRO/repo/oss/ repo-oss + zypper --quiet --root $cache/partial-$arch --non-interactive ar http://download.opensuse.org/update/$DISTRO/ update + zypper --quiet --root $cache/partial-$arch --non-interactive --gpg-auto-import-keys in --auto-agree-with-licenses -t pattern base + zypper --quiet --root $cache/partial-$arch --non-interactive --gpg-auto-import-keys in +lxc -kbd -patterns-openSUSE-base + 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_opensuse() +{ + cache=$1 + arch=$2 + rootfs=$3 + + # make a local copy of the mini opensuse + echo -n "Copying rootfs to $rootfs ..." + cp -a $cache/rootfs-$arch $rootfs || return 1 + return 0 +} + +install_opensuse() +{ + cache="/var/cache/lxc/opensuse" + 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) + + echo "Checking cache download in $cache/rootfs-$arch ... " + if [ ! -e "$cache/rootfs-$arch" ]; then + download_opensuse $cache $arch + if [ $? -ne 0 ]; then + echo "Failed to download 'opensuse base'" + return 1 + fi + fi + + echo "Copy $cache/rootfs-$arch to $rootfs ... " + copy_opensuse $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/opensuse" + + 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 zypper > /dev/null +if [ $? -ne 0 ]; then + echo "'zypper' command is missing" + exit 1 +fi + +if [ -z "$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_opensuse $rootfs +if [ $? -ne 0 ]; then + echo "failed to install opensuse" + exit 1 +fi + +configure_opensuse $rootfs $name +if [ $? -ne 0 ]; then + echo "failed to configure opensuse 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 |