4 # template script for generating altlinux container for LXC
8 # lxc: linux Container library
11 # Alexey Shabalin <shaba@altlinux.org>
13 # This library is free software; you can redistribute it and/or
14 # modify it under the terms of the GNU Lesser General Public
15 # License as published by the Free Software Foundation; either
16 # version 2.1 of the License, or (at your option) any later version.
18 # This library is distributed in the hope that it will be useful,
19 # but WITHOUT ANY WARRANTY; without even the implied warranty of
20 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
21 # Lesser General Public License for more details.
23 # You should have received a copy of the GNU Lesser General Public
24 # License along with this library; if not, write to the Free Software
25 # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
29 cache_base=/var/cache/lxc/altlinux/$arch
30 default_path=${localstatedir}/lib/lxc
31 default_profile=default
32 profile_dir=/etc/lxc/profiles
35 lxc_network_link=virbr0
38 [ -f /etc/altlinux-release ] && is_altlinux=true
43 # disable selinux in altlinux
44 mkdir -p $rootfs_path/selinux
45 echo 0 > $rootfs_path/selinux/enforce
47 mkdir -p ${rootfs_path}/etc/net/ifaces/veth0
48 cat <<EOF > ${rootfs_path}/etc/net/ifaces/veth0/options
49 BOOTPROTO=${BOOTPROTO}
55 if [ ${BOOTPROTO} != "dhcp" ]; then
57 cat <<EOF > ${rootfs_path}/etc/net/ifaces/veth0/ipv4address
61 cat <<EOF > ${rootfs_path}/etc/net/ifaces/veth0/ipv4route
65 cat <<EOF > ${rootfs_path}/etc/net/ifaces/veth0/resolv.conf
69 cat <<EOF > ${rootfs_path}/etc/net/ifaces/veth0/ipv6address
73 cat <<EOF > ${rootfs_path}/etc/net/ifaces/veth0/ipv6route
80 cat <<EOF > ${rootfs_path}/etc/sysconfig/network
88 cat <<EOF > $rootfs_path/etc/hosts
89 127.0.0.1 localhost.localdomain localhost $name
91 # Allow to login at virsh console. loginuid.so doen't work in the absence of auditd.
92 # sed -i 's/^.*loginuid.so.*$/\#&/' ${rootfs_path}/etc/pam.d/common-login
94 # Allow root to login at virsh console
95 echo "pts/0" >> ${rootfs_path}/etc/securetty
96 echo "console" >> ${rootfs_path}/etc/securetty
98 chroot ${rootfs_path} chkconfig network on
99 chroot ${rootfs_path} chkconfig syslogd on
100 chroot ${rootfs_path} chkconfig random on
101 chroot ${rootfs_path} chkconfig rawdevices off
102 chroot ${rootfs_path} chkconfig fbsetfont off
103 # chroot ${rootfs_path} chkconfig keytable off
105 subst 's/^\([3-9]\+:[0-9]\+:respawn:\/sbin\/mingetty.*\)/#\1/' ${rootfs_path}/etc/inittab
106 echo "c1:2345:respawn:/sbin/mingetty --noclear console" >> ${rootfs_path}/etc/inittab
107 subst 's,\/dev\/tty12,/var/log/syslog/console,' ${rootfs_path}/etc/syslog.conf
109 # touch file for fastboot
110 touch ${rootfs_path}/fastboot
111 chattr +i ${rootfs_path}/fastboot
113 dev_path="${rootfs_path}/dev"
116 mknod -m 666 ${dev_path}/null c 1 3
117 mknod -m 666 ${dev_path}/zero c 1 5
118 mknod -m 644 ${dev_path}/random c 1 8
119 mknod -m 644 ${dev_path}/urandom c 1 9
120 mkdir -m 755 ${dev_path}/pts
121 mkdir -m 1777 ${dev_path}/shm
122 mknod -m 666 ${dev_path}/tty c 5 0
123 chown root:tty ${dev_path}/tty
124 mknod -m 600 ${dev_path}/tty0 c 4 0
125 mknod -m 600 ${dev_path}/tty1 c 4 1
126 mknod -m 600 ${dev_path}/tty2 c 4 2
127 mknod -m 600 ${dev_path}/tty3 c 4 3
128 mknod -m 600 ${dev_path}/tty4 c 4 4
129 mknod -m 600 ${dev_path}/console c 5 1
130 mknod -m 666 ${dev_path}/full c 1 7
131 mknod -m 600 ${dev_path}/initctl p
132 mknod -m 666 ${dev_path}/ptmx c 5 2
133 chown root:tty ${dev_path}/ptmx
134 ln -s /proc/self/fd ${dev_path}/fd
135 ln -s /proc/kcore ${dev_path}/core
136 mkdir -m 755 ${dev_path}/mapper
137 mknod -m 600 ${dev_path}/mapper/control c 10 236
138 mkdir -m 755 ${dev_path}/net
139 mknod -m 666 ${dev_path}/net/tun c 10 200
141 echo "setting root passwd to $root_password"
142 echo "root:$root_password" | chroot $rootfs_path chpasswd
150 # check the mini altlinux was not already downloaded
151 INSTALL_ROOT=$cache/partial
152 mkdir -p $INSTALL_ROOT
153 if [ $? -ne 0 ]; then
154 echo "Failed to create '$INSTALL_ROOT' directory"
158 # download a mini altlinux into a cache
159 echo "Downloading altlinux minimal ..."
160 APT_GET="apt-get -o RPM::RootDir=$INSTALL_ROOT -y"
161 PKG_LIST="$(grep -hs '^[^#]' "$profile_dir/$profile")"
162 # PKG_LIST="basesystem apt apt-conf-sisyphus etcnet openssh-server passwd sysklogd net-tools e2fsprogs"
164 mkdir -p $INSTALL_ROOT/var/lib/rpm
165 rpm --root $INSTALL_ROOT --initdb
166 $APT_GET install $PKG_LIST
168 if [ $? -ne 0 ]; then
169 echo "Failed to download the rootfs, aborting."
173 mv "$INSTALL_ROOT" "$cache/rootfs"
174 echo "Download complete."
182 # make a local copy of the minialtlinux
183 echo -n "Copying rootfs to $rootfs_path ..."
184 #cp -a $cache/rootfs-$arch $rootfs_path || return 1
185 # i prefer rsync (no reason really)
186 mkdir -p $rootfs_path
187 rsync -a $cache/rootfs/ $rootfs_path/
193 chroot $cache/rootfs apt-get update
194 chroot $cache/rootfs apt-get -y dist-upgrade
199 mkdir -p /var/lock/subsys/
202 if [ $? -ne 0 ]; then
203 echo "Cache repository is busy."
207 echo "Checking cache download in $cache/rootfs ... "
208 if [ ! -e "$cache/rootfs" ]; then
210 if [ $? -ne 0 ]; then
211 echo "Failed to download 'altlinux base'"
215 echo "Cache found. Updating..."
217 if [ $? -ne 0 ]; then
218 echo "Failed to update 'altlinux base', continuing with last known good cache"
220 echo "Update finished"
224 echo "Copy $cache/rootfs to $rootfs_path ... "
226 if [ $? -ne 0 ]; then
227 echo "Failed to copy rootfs"
233 ) 200>/var/lock/subsys/lxc
241 mkdir -p $config_path
242 grep -q "^lxc.rootfs" $config_path/config 2>/dev/null || echo "lxc.rootfs = $rootfs_path" >> $config_path/config
243 cat <<EOF >> $config_path/config
247 lxc.mount = $config_path/fstab
249 lxc.network.type = $lxc_network_type
250 lxc.network.flags = up
251 lxc.network.link = $lxc_network_link
252 lxc.network.name = veth0
253 lxc.network.mtu = 1500
255 if [ ! -z ${ipv4} ]; then
256 cat <<EOF >> $config_path/config
257 lxc.network.ipv4 = $ipv4
260 if [ ! -z ${gw} ]; then
261 cat <<EOF >> $config_path/config
262 lxc.network.ipv4.gateway = $gw
265 if [ ! -z ${ipv6} ]; then
266 cat <<EOF >> $config_path/config
267 lxc.network.ipv6 = $ipv6
270 if [ ! -z ${gw6} ]; then
271 cat <<EOF >> $config_path/config
272 lxc.network.ipv6.gateway = $gw6
275 cat <<EOF >> $config_path/config
277 lxc.cgroup.devices.deny = a
279 lxc.cgroup.devices.allow = c 1:3 rwm
280 lxc.cgroup.devices.allow = c 1:5 rwm
282 lxc.cgroup.devices.allow = c 5:1 rwm
283 lxc.cgroup.devices.allow = c 5:0 rwm
284 lxc.cgroup.devices.allow = c 4:0 rwm
285 lxc.cgroup.devices.allow = c 4:1 rwm
287 lxc.cgroup.devices.allow = c 1:9 rwm
288 lxc.cgroup.devices.allow = c 1:8 rwm
289 lxc.cgroup.devices.allow = c 136:* rwm
290 lxc.cgroup.devices.allow = c 5:2 rwm
292 lxc.cgroup.devices.allow = c 10:135 rwm
295 cat <<EOF > $config_path/fstab
296 proc $rootfs_path/proc proc nodev,noexec,nosuid 0 0
297 sysfs $rootfs_path/sys sysfs defaults 0 0
300 if [ $? -ne 0 ]; then
301 echo "Failed to add configuration"
311 if [ ! -e $cache ]; then
315 # lock, so we won't purge while someone is creating a repository
319 echo "Cache repository is busy."
323 echo -n "Purging the download cache for ALTLinux-$release..."
324 rm --preserve-root --one-file-system -rf $cache && echo "Done." || exit 1
327 ) 200>/var/lock/subsys/lxc
334 $1 -n|--name=<container_name>
335 [-p|--path=<path>] [-c|--clean] [-R|--release=<ALTLinux_release>]
336 [-4|--ipv4=<ipv4 address>] [-6|--ipv6=<ipv6 address>]
337 [-g|--gw=<gw address>] [-d|--dns=<dns address>]
338 [-P|--profile=<name of the profile>]
339 [-A|--arch=<arch of the container>]
342 -n,--name container name, used to as an identifier for that container from now on
344 -p,--path path to where the container rootfs will be created, defaults to /var/lib/lxc. The container config will go under /var/lib/lxc in and case
345 -c,--clean clean the cache
346 -R,--release ALTLinux release for the new container. if the host is ALTLinux, then it will defaultto the host's release.
347 -4,--ipv4 specify the ipv4 address to assign to the virtualized interface, eg. 192.168.1.123/24
348 -6,--ipv6 specify the ipv6 address to assign to the virtualized interface, eg. 2003:db8:1:0:214:1234:fe0b:3596/64
349 -g,--gw specify the default gw, eg. 192.168.1.1
350 -G,--gw6 specify the default gw, eg. 2003:db8:1:0:214:1234:fe0b:3596
351 -d,--dns specify the DNS server, eg. 192.168.1.2
352 -P,--profile Profile name is the file name in /etc/lxc/profiles contained packages name for install to cache.
353 -A,--arch NOT USED YET. Define what arch the container will be [i686,x86_64]
354 -h,--help print this help
359 options=$(getopt -o hp:n:P:cR:4:6:g:d: -l help,path:,name:,profile:,clean,release:ipv4:ipv6:gw:dns: -- "$@")
360 if [ $? -ne 0 ]; then
364 eval set -- "$options"
369 -h|--help) usage $0 && exit 0;;
370 -p|--path) path=$2; shift 2;;
371 -n|--name) name=$2; shift 2;;
372 -P|--profile) profile=$2; shift 2;;
373 -c|--clean) clean=$2; shift 2;;
374 -R|--release) release=$2; shift 2;;
375 -4|--ipv4) ipv4=$2; shift 2;;
376 -6|--ipv6) ipv6=$2; shift 2;;
377 -g|--gw) gw=$2; shift 2;;
378 -d|--dns) dns=$2; shift 2;;
379 --) shift 1; break ;;
384 if [ ! -z "$clean" -a -z "$path" ]; then
389 type apt-get >/dev/null 2>&1
390 if [ $? -ne 0 ]; then
391 echo "'apt-get' command is missing"
395 if [ -z "$path" ]; then
399 if [ -z "$profile" ]; then
400 profile=$default_profile
403 if [ -z "$release" ]; then
404 if [ "$is_altlinux" ]; then
405 release=$(cat /etc/altlinux-release |awk '/^ALT/ {print $3}')
407 echo "This is not a ALTLinux host and release missing, use -R|--release to specify release"
412 if [ -z "$ipv4" -a -z "$ipv6" ]; then
418 if [ "$(id -u)" != "0" ]; then
419 echo "This script should be run as 'root'"
423 rootfs_path=$path/$name/rootfs
424 config_path=$default_path/$name
425 cache=$cache_base/$release/$profile
427 if [ -f $config_path/config ]; then
428 echo "A container with that name exists, chose a different name"
432 # check for 'lxc.rootfs' passed in through default config by lxc-create
433 if grep -q '^lxc.rootfs' $path/config 2>/dev/null ; then
434 rootfs_path=`grep 'lxc.rootfs =' $path/config | awk -F= '{ print $2 }'`
438 if [ $? -ne 0 ]; then
439 echo "failed to install altlinux"
444 if [ $? -ne 0 ]; then
445 echo "failed to configure altlinux for a container"
450 if [ $? -ne 0 ]; then
451 echo "failed write configuration file"
455 if [ ! -z $clean ]; then
459 echo "container rootfs and config created"
460 echo "container is configured for lxc.network.type=veth and lxc.network.link=virbr0 (which is default if you have libvirt runnig)"