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# template script for generating fedora container for LXC
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# lxc: linux Container library
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# Daniel Lezcano <daniel.lezcano@free.fr>
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# Ramez Hanna <rhanna@informatiq.org>
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# This library is free software; you can redistribute it and/or
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# modify it under the terms of the GNU Lesser General Public
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# License as published by the Free Software Foundation; either
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# version 2.1 of the License, or (at your option) any later version.
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# This library is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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# Lesser General Public License for more details.
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# You should have received a copy of the GNU Lesser General Public
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# License along with this library; if not, write to the Free Software
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# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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cache_base=/var/cache/lxc/fedora/$arch
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default_path=/var/lib/lxc
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[ -f /etc/fedora-release ] && is_fedora=true
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if [ "$arch" = "i686" ]; then
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# disable selinux in fedora
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mkdir -p $rootfs_path/selinux
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echo 0 > $rootfs_path/selinux/enforce
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# configure the network using the dhcp
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cat <<EOF > ${rootfs_path}/etc/sysconfig/network-scripts/ifcfg-eth0
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cat <<EOF > ${rootfs_path}/etc/sysconfig/network
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cat <<EOF > $rootfs_path/etc/hosts
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127.0.0.1 localhost $name
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sed -i 's|.sbin.start_udev||' ${rootfs_path}/etc/rc.sysinit
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sed -i 's|.sbin.start_udev||' ${rootfs_path}/etc/rc.d/rc.sysinit
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# don't mount devpts, for pete's sake
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sed -i 's/^.*dev.pts.*$/#\0/' ${rootfs_path}/etc/rc.sysinit
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sed -i 's/^.*dev.pts.*$/#\0/' ${rootfs_path}/etc/rc.d/rc.sysinit
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chroot ${rootfs_path} chkconfig udev-post off
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chroot ${rootfs_path} chkconfig network on
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dev_path="${rootfs_path}/dev"
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mknod -m 666 ${dev_path}/null c 1 3
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mknod -m 666 ${dev_path}/zero c 1 5
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mknod -m 666 ${dev_path}/random c 1 8
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mknod -m 666 ${dev_path}/urandom c 1 9
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mkdir -m 755 ${dev_path}/pts
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mkdir -m 1777 ${dev_path}/shm
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mknod -m 666 ${dev_path}/tty c 5 0
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mknod -m 666 ${dev_path}/tty0 c 4 0
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mknod -m 666 ${dev_path}/tty1 c 4 1
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mknod -m 666 ${dev_path}/tty2 c 4 2
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mknod -m 666 ${dev_path}/tty3 c 4 3
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mknod -m 666 ${dev_path}/tty4 c 4 4
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mknod -m 600 ${dev_path}/console c 5 1
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mknod -m 666 ${dev_path}/full c 1 7
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mknod -m 600 ${dev_path}/initctl p
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mknod -m 666 ${dev_path}/ptmx c 5 2
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echo "setting root passwd to $root_password"
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echo "root:$root_password" | chroot $rootfs_path chpasswd
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# specifying this in the initial packages doesn't always work.
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echo "installing fedora-release package"
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chroot ${rootfs_path} yum --releasever=${release} -y install fedora-release
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# silence some needless startup errors
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touch ${rootfs_path}/etc/fstab
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# give us a console on /dev/console
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sed -i 's/ACTIVE_CONSOLES=.*$/ACTIVE_CONSOLES="\/dev\/console \/dev\/tty[1-4]"/' \
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${rootfs_path}/etc/sysconfig/init
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# check the mini fedora was not already downloaded
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INSTALL_ROOT=$cache/partial
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mkdir -p $INSTALL_ROOT
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if [ $? -ne 0 ]; then
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echo "Failed to create '$INSTALL_ROOT' directory"
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# download a mini fedora into a cache
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echo "Downloading fedora minimal ..."
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YUM="yum --installroot $INSTALL_ROOT -y --nogpgcheck"
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PKG_LIST="yum initscripts passwd rsyslog vim-minimal dhclient chkconfig rootfiles policycoreutils fedora-release"
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MIRRORLIST_URL="http://mirrors.fedoraproject.org/mirrorlist?repo=fedora-$release&arch=$arch"
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for trynumber in 1 2 3; do
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[ $trynumber != 1 ] && echo "Trying again..."
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MIRROR_URL=$(curl -s -S -f "$MIRRORLIST_URL" | head -n2 | tail -n1)
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if [ $? -ne 0 ] || [ -z "$MIRROR_URL" ]; then
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echo "Failed to get a mirror"
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RELEASE_URL="$MIRROR_URL/Packages/fedora-release-$release-1.noarch.rpm"
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echo "Fetching from $RELEASE_URL"
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curl -f "$RELEASE_URL" > $INSTALL_ROOT/fedora-release-$release.noarch.rpm
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if [ $? -ne 0 ]; then
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echo "Failed to download fedora release rpm"
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if [ $DOWNLOAD_OK != yes ]; then
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mkdir -p $INSTALL_ROOT/var/lib/rpm
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rpm --root $INSTALL_ROOT --initdb
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rpm --root $INSTALL_ROOT -ivh $INSTALL_ROOT/fedora-release-$release.noarch.rpm
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$YUM install $PKG_LIST
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if [ $? -ne 0 ]; then
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echo "Failed to download the rootfs, aborting."
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mv "$INSTALL_ROOT" "$cache/rootfs"
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echo "Download complete."
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# make a local copy of the minifedora
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echo -n "Copying rootfs to $rootfs_path ..."
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#cp -a $cache/rootfs-$arch $rootfs_path || return 1
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# i prefer rsync (no reason really)
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mkdir -p $rootfs_path
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rsync -a $cache/rootfs/ $rootfs_path/
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chroot $cache/rootfs yum -y update
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mkdir -p /var/lock/subsys/
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if [ $? -ne 0 ]; then
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echo "Cache repository is busy."
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echo "Checking cache download in $cache/rootfs ... "
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if [ ! -e "$cache/rootfs" ]; then
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if [ $? -ne 0 ]; then
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echo "Failed to download 'fedora base'"
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echo "Cache found. Updating..."
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if [ $? -ne 0 ]; then
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echo "Failed to update 'fedora base', continuing with last known good cache"
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echo "Update finished"
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echo "Copy $cache/rootfs to $rootfs_path ... "
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if [ $? -ne 0 ]; then
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echo "Failed to copy rootfs"
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) 200>/var/lock/subsys/lxc
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mkdir -p $config_path
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cat <<EOF >> $config_path/config
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lxc.rootfs = $rootfs_path
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lxc.mount = $config_path/fstab
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lxc.cgroup.devices.deny = a
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lxc.cgroup.devices.allow = c 1:3 rwm
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lxc.cgroup.devices.allow = c 1:5 rwm
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lxc.cgroup.devices.allow = c 5:1 rwm
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lxc.cgroup.devices.allow = c 5:0 rwm
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lxc.cgroup.devices.allow = c 4:0 rwm
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lxc.cgroup.devices.allow = c 4:1 rwm
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lxc.cgroup.devices.allow = c 1:9 rwm
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lxc.cgroup.devices.allow = c 1:8 rwm
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lxc.cgroup.devices.allow = c 136:* rwm
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lxc.cgroup.devices.allow = c 5:2 rwm
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lxc.cgroup.devices.allow = c 254:0 rwm
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cat <<EOF > $config_path/fstab
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proc $rootfs_path/proc proc nodev,noexec,nosuid 0 0
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sysfs $rootfs_path/sys sysfs defaults 0 0
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if [ $? -ne 0 ]; then
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echo "Failed to add configuration"
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if [ ! -e $cache ]; then
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# lock, so we won't purge while someone is creating a repository
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echo "Cache repository is busy."
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echo -n "Purging the download cache for Fedora-$release..."
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rm --preserve-root --one-file-system -rf $cache && echo "Done." || exit 1
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) 200>/var/lock/subsys/lxc
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$1 -n|--name=<container_name>
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[-p|--path=<path>] [-c|--clean] [-R|--release=<Fedora_release>] [-A|--arch=<arch of the container>]
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-n,--name container name, used to as an identifier for that container from now on
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-p,--path path to where the container rootfs will be created, defaults to /var/lib/lxc. The container config will go under /var/lib/lxc in that case
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-c,--clean clean the cache
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-R,--release Fedora release for the new container. if the host is Fedora, then it will defaultto the host's release.
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-A,--arch NOT USED YET. Define what arch the container will be [i686,x86_64]
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-h,--help print this help
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options=$(getopt -o hp:n:cR: -l help,path:,name:,clean,release: -- "$@")
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if [ $? -ne 0 ]; then
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eval set -- "$options"
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-h|--help) usage $0 && exit 0;;
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-p|--path) path=$2; shift 2;;
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-n|--name) name=$2; shift 2;;
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-c|--clean) clean=$2; shift 2;;
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-R|--release) release=$2; shift 2;;
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--) shift 1; break ;;
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if [ ! -z "$clean" -a -z "$path" ]; then
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type yum >/dev/null 2>&1
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if [ $? -ne 0 ]; then
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needed_pkgs="yum $needed_pkgs"
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type curl >/dev/null 2>&1
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if [ $? -ne 0 ]; then
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needed_pkgs="curl $needed_pkgs"
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if [ -n "$needed_pkgs" ]; then
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echo "Missing commands: $needed_pkgs"
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echo "Please install these using \"sudo apt-get install $needed_pkgs\""
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if [ -z "$path" ]; then
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if [ -z "$release" ]; then
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if [ "$is_fedora" ]; then
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release=$(cat /etc/fedora-release |awk '/^Fedora/ {print $3}')
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echo "This is not a fedora host and release missing, defaulting to 14. use -R|--release to specify release"
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if [ "$(id -u)" != "0" ]; then
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echo "This script should be run as 'root'"
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rootfs_path=$path/rootfs
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config_path=$default_path/$name
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cache=$cache_base/$release
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echo "Interrupted, so cleaning up"
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# maybe was interrupted before copy config
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rm -rf $default_path/$name
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trap revert SIGHUP SIGINT SIGTERM
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if [ $? -ne 0 ]; then
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echo "failed write configuration file"
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if [ $? -ne 0 ]; then
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echo "failed to install fedora"
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if [ $? -ne 0 ]; then
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echo "failed to configure fedora for a container"
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if [ ! -z $clean ]; then
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echo "container rootfs and config created"
added
removed
.pc/0062-templates-relative-paths/templates/lxc-fedora.in
