4 # template script for generating fedora container for LXC
8 # lxc: linux Container library
11 # Daniel Lezcano <daniel.lezcano@free.fr>
12 # Ramez Hanna <rhanna@informatiq.org>
14 # This library is free software; you can redistribute it and/or
15 # modify it under the terms of the GNU Lesser General Public
16 # License as published by the Free Software Foundation; either
17 # version 2.1 of the License, or (at your option) any later version.
19 # This library is distributed in the hope that it will be useful,
20 # but WITHOUT ANY WARRANTY; without even the implied warranty of
21 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
22 # Lesser General Public License for more details.
24 # You should have received a copy of the GNU Lesser General Public
25 # License along with this library; if not, write to the Free Software
26 # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
30 cache_base=/var/cache/lxc/fedora/$arch
31 default_path=/var/lib/lxc
35 [ -f /etc/fedora-release ] && is_fedora=true
37 if [ "$arch" = "i686" ]; then
44 # disable selinux in fedora
45 mkdir -p $rootfs_path/selinux
46 echo 0 > $rootfs_path/selinux/enforce
48 # configure the network using the dhcp
49 cat <<EOF > ${rootfs_path}/etc/sysconfig/network-scripts/ifcfg-eth0
60 cat <<EOF > ${rootfs_path}/etc/sysconfig/network
66 cat <<EOF > $rootfs_path/etc/hosts
67 127.0.0.1 localhost $name
70 sed -i 's|.sbin.start_udev||' ${rootfs_path}/etc/rc.sysinit
71 sed -i 's|.sbin.start_udev||' ${rootfs_path}/etc/rc.d/rc.sysinit
72 # don't mount devpts, for pete's sake
73 sed -i 's/^.*dev.pts.*$/#\0/' ${rootfs_path}/etc/rc.sysinit
74 sed -i 's/^.*dev.pts.*$/#\0/' ${rootfs_path}/etc/rc.d/rc.sysinit
76 chroot ${rootfs_path} chkconfig udev-post off
77 chroot ${rootfs_path} chkconfig network on
79 dev_path="${rootfs_path}/dev"
82 mknod -m 666 ${dev_path}/null c 1 3
83 mknod -m 666 ${dev_path}/zero c 1 5
84 mknod -m 666 ${dev_path}/random c 1 8
85 mknod -m 666 ${dev_path}/urandom c 1 9
86 mkdir -m 755 ${dev_path}/pts
87 mkdir -m 1777 ${dev_path}/shm
88 mknod -m 666 ${dev_path}/tty c 5 0
89 mknod -m 666 ${dev_path}/tty0 c 4 0
90 mknod -m 666 ${dev_path}/tty1 c 4 1
91 mknod -m 666 ${dev_path}/tty2 c 4 2
92 mknod -m 666 ${dev_path}/tty3 c 4 3
93 mknod -m 666 ${dev_path}/tty4 c 4 4
94 mknod -m 600 ${dev_path}/console c 5 1
95 mknod -m 666 ${dev_path}/full c 1 7
96 mknod -m 600 ${dev_path}/initctl p
97 mknod -m 666 ${dev_path}/ptmx c 5 2
99 echo "setting root passwd to $root_password"
100 echo "root:$root_password" | chroot $rootfs_path chpasswd
102 # specifying this in the initial packages doesn't always work.
103 echo "installing fedora-release package"
104 chroot ${rootfs_path} yum --releasever=${release} -y install fedora-release
106 # silence some needless startup errors
107 touch ${rootfs_path}/etc/fstab
109 # give us a console on /dev/console
110 sed -i 's/ACTIVE_CONSOLES=.*$/ACTIVE_CONSOLES="\/dev\/console \/dev\/tty[1-4]"/' \
111 ${rootfs_path}/etc/sysconfig/init
119 # check the mini fedora was not already downloaded
120 INSTALL_ROOT=$cache/partial
121 mkdir -p $INSTALL_ROOT
122 if [ $? -ne 0 ]; then
123 echo "Failed to create '$INSTALL_ROOT' directory"
127 # download a mini fedora into a cache
128 echo "Downloading fedora minimal ..."
129 YUM="yum --installroot $INSTALL_ROOT -y --nogpgcheck"
130 PKG_LIST="yum initscripts passwd rsyslog vim-minimal dhclient chkconfig rootfiles policycoreutils fedora-release"
131 MIRRORLIST_URL="http://mirrors.fedoraproject.org/mirrorlist?repo=fedora-$release&arch=$arch"
134 for trynumber in 1 2 3; do
135 [ $trynumber != 1 ] && echo "Trying again..."
136 MIRROR_URL=$(curl -s -S -f "$MIRRORLIST_URL" | head -n2 | tail -n1)
137 if [ $? -ne 0 ] || [ -z "$MIRROR_URL" ]; then
138 echo "Failed to get a mirror"
141 RELEASE_URL="$MIRROR_URL/Packages/fedora-release-$release-1.noarch.rpm"
142 echo "Fetching from $RELEASE_URL"
143 curl -f "$RELEASE_URL" > $INSTALL_ROOT/fedora-release-$release.noarch.rpm
144 if [ $? -ne 0 ]; then
145 echo "Failed to download fedora release rpm"
151 if [ $DOWNLOAD_OK != yes ]; then
156 mkdir -p $INSTALL_ROOT/var/lib/rpm
157 rpm --root $INSTALL_ROOT --initdb
158 rpm --root $INSTALL_ROOT -ivh $INSTALL_ROOT/fedora-release-$release.noarch.rpm
159 $YUM install $PKG_LIST
161 if [ $? -ne 0 ]; then
162 echo "Failed to download the rootfs, aborting."
166 mv "$INSTALL_ROOT" "$cache/rootfs"
167 echo "Download complete."
175 # make a local copy of the minifedora
176 echo -n "Copying rootfs to $rootfs_path ..."
177 #cp -a $cache/rootfs-$arch $rootfs_path || return 1
178 # i prefer rsync (no reason really)
179 mkdir -p $rootfs_path
180 rsync -a $cache/rootfs/ $rootfs_path/
186 chroot $cache/rootfs yum -y update
191 mkdir -p /var/lock/subsys/
194 if [ $? -ne 0 ]; then
195 echo "Cache repository is busy."
199 echo "Checking cache download in $cache/rootfs ... "
200 if [ ! -e "$cache/rootfs" ]; then
202 if [ $? -ne 0 ]; then
203 echo "Failed to download 'fedora base'"
207 echo "Cache found. Updating..."
209 if [ $? -ne 0 ]; then
210 echo "Failed to update 'fedora base', continuing with last known good cache"
212 echo "Update finished"
216 echo "Copy $cache/rootfs to $rootfs_path ... "
218 if [ $? -ne 0 ]; then
219 echo "Failed to copy rootfs"
225 ) 200>/var/lock/subsys/lxc
233 mkdir -p $config_path
234 cat <<EOF >> $config_path/config
238 lxc.rootfs = $rootfs_path
239 lxc.mount = $config_path/fstab
241 # uncomment the next line to run the container unconfined:
242 #lxc.aa_profile = unconfined
245 lxc.cgroup.devices.deny = a
247 lxc.cgroup.devices.allow = c 1:3 rwm
248 lxc.cgroup.devices.allow = c 1:5 rwm
250 lxc.cgroup.devices.allow = c 5:1 rwm
251 lxc.cgroup.devices.allow = c 5:0 rwm
252 lxc.cgroup.devices.allow = c 4:0 rwm
253 lxc.cgroup.devices.allow = c 4:1 rwm
255 lxc.cgroup.devices.allow = c 1:9 rwm
256 lxc.cgroup.devices.allow = c 1:8 rwm
257 lxc.cgroup.devices.allow = c 136:* rwm
258 lxc.cgroup.devices.allow = c 5:2 rwm
260 lxc.cgroup.devices.allow = c 254:0 rwm
263 cat <<EOF > $config_path/fstab
264 proc proc proc nodev,noexec,nosuid 0 0
265 sysfs sys sysfs defaults 0 0
267 if [ $? -ne 0 ]; then
268 echo "Failed to add configuration"
278 if [ ! -e $cache ]; then
282 # lock, so we won't purge while someone is creating a repository
286 echo "Cache repository is busy."
290 echo -n "Purging the download cache for Fedora-$release..."
291 rm --preserve-root --one-file-system -rf $cache && echo "Done." || exit 1
294 ) 200>/var/lock/subsys/lxc
301 $1 -n|--name=<container_name>
302 [-p|--path=<path>] [-c|--clean] [-R|--release=<Fedora_release>] [-A|--arch=<arch of the container>]
305 -n,--name container name, used to as an identifier for that container from now on
307 -p,--path path to where the container rootfs will be created, defaults to /var/lib/lxc. The container config will go under /var/lib/lxc in that case
308 -c,--clean clean the cache
309 -R,--release Fedora release for the new container. if the host is Fedora, then it will defaultto the host's release.
310 -A,--arch NOT USED YET. Define what arch the container will be [i686,x86_64]
311 -h,--help print this help
316 options=$(getopt -o hp:n:cR: -l help,path:,name:,clean,release: -- "$@")
317 if [ $? -ne 0 ]; then
321 eval set -- "$options"
326 -h|--help) usage $0 && exit 0;;
327 -p|--path) path=$2; shift 2;;
328 -n|--name) name=$2; shift 2;;
329 -c|--clean) clean=$2; shift 2;;
330 -R|--release) release=$2; shift 2;;
331 --) shift 1; break ;;
336 if [ ! -z "$clean" -a -z "$path" ]; then
342 type yum >/dev/null 2>&1
343 if [ $? -ne 0 ]; then
344 needed_pkgs="yum $needed_pkgs"
347 type curl >/dev/null 2>&1
348 if [ $? -ne 0 ]; then
349 needed_pkgs="curl $needed_pkgs"
352 if [ -n "$needed_pkgs" ]; then
353 echo "Missing commands: $needed_pkgs"
354 echo "Please install these using \"sudo apt-get install $needed_pkgs\""
358 if [ -z "$path" ]; then
362 if [ -z "$release" ]; then
363 if [ "$is_fedora" ]; then
364 release=$(cat /etc/fedora-release |awk '/^Fedora/ {print $3}')
366 echo "This is not a fedora host and release missing, defaulting to 14. use -R|--release to specify release"
371 if [ "$(id -u)" != "0" ]; then
372 echo "This script should be run as 'root'"
377 rootfs_path=$path/rootfs
378 config_path=$default_path/$name
379 cache=$cache_base/$release
383 echo "Interrupted, so cleaning up"
385 # maybe was interrupted before copy config
387 rm -rf $default_path/$name
392 trap revert SIGHUP SIGINT SIGTERM
395 if [ $? -ne 0 ]; then
396 echo "failed write configuration file"
401 if [ $? -ne 0 ]; then
402 echo "failed to install fedora"
407 if [ $? -ne 0 ]; then
408 echo "failed to configure fedora for a container"
413 if [ ! -z $clean ]; then
417 echo "container rootfs and config created"