--- /dev/null
+#!/bin/bash
+
+#
+# template script for generating altlinux container for LXC
+#
+
+#
+# lxc: linux Container library
+
+# Authors:
+# Alexey Shabalin <shaba@altlinux.org>
+
+# 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
+
+#Configurations
+arch=$(arch)
+cache_base=/var/cache/lxc/altlinux/$arch
+default_path=/var/lib/lxc
+default_profile=default
+profile_dir=/etc/lxc/profiles
+root_password=rooter
+lxc_network_type=veth
+lxc_network_link=virbr0
+
+# is this altlinux?
+[ -f /etc/altlinux-release ] && is_altlinux=true
+
+configure_altlinux()
+{
+
+ # disable selinux in altlinux
+ mkdir -p $rootfs_path/selinux
+ echo 0 > $rootfs_path/selinux/enforce
+
+ # configure the network using the dhcp
+ mkdir -p ${rootfs_path}/etc/net/ifaces/eth0
+ cat <<EOF > ${rootfs_path}/etc/net/ifaces/eth0/options
+BOOTPROTO=dhcp
+ONBOOT=yes
+NM_CONTROLLED=no
+TYPE=eth
+EOF
+
+ # set the hostname
+ cat <<EOF > ${rootfs_path}/etc/sysconfig/network
+NETWORKING=yes
+CONFMETHOD=etcnet
+HOSTNAME=${UTSNAME}
+RESOLV_MODS=yes
+EOF
+
+ # set minimal hosts
+ cat <<EOF > $rootfs_path/etc/hosts
+127.0.0.1 localhost.localdomain localhost $name
+EOF
+ # Allow to login at virsh console. loginuid.so doen't work in the absence of auditd.
+ sed -i 's/^.*loginuid.so.*$/\#&/' ${rootfs_path}/etc/pam.d/common-login
+
+ # Allow root to login at virsh console
+ echo "pts/0" >> ${rootfs_path}/etc/securetty
+
+ chroot ${rootfs_path} chkconfig network on
+ chroot ${rootfs_path} chkconfig syslogd on
+ chroot ${rootfs_path} chkconfig random on
+ chroot ${rootfs_path} chkconfig rawdevices off
+ chroot ${rootfs_path} chkconfig fbsetfont off
+# chroot ${rootfs_path} chkconfig keytable off
+
+ subst 's/^\([0-9]\+:[0-9]\+:respawn:\/sbin\/mingetty.*\)/#\1/' ${rootfs_path}/etc/inittab
+ subst 's,\/dev\/tty12,/var/log/syslog/console,' ${rootfs_path}/etc/syslog.conf
+
+ dev_path="${rootfs_path}/dev"
+ rm -rf $dev_path
+ mkdir -p $dev_path
+ mknod -m 666 ${dev_path}/null c 1 3
+ mknod -m 666 ${dev_path}/zero c 1 5
+ mknod -m 644 ${dev_path}/random c 1 8
+ mknod -m 644 ${dev_path}/urandom c 1 9
+ mkdir -m 755 ${dev_path}/pts
+ mkdir -m 1777 ${dev_path}/shm
+ mknod -m 666 ${dev_path}/tty c 5 0
+ mknod -m 666 ${dev_path}/tty0 c 4 0
+ mknod -m 666 ${dev_path}/tty1 c 4 1
+ mknod -m 666 ${dev_path}/tty2 c 4 2
+ mknod -m 666 ${dev_path}/tty3 c 4 3
+ mknod -m 666 ${dev_path}/tty4 c 4 4
+ mknod -m 600 ${dev_path}/console c 5 1
+ mknod -m 666 ${dev_path}/full c 1 7
+ mknod -m 600 ${dev_path}/initctl p
+ mknod -m 666 ${dev_path}/ptmx c 5 2
+
+ echo "setting root passwd to $root_password"
+ echo "root:$root_password" | chroot $rootfs_path chpasswd
+
+ return 0
+}
+
+download_altlinux()
+{
+
+ # check the mini altlinux was not already downloaded
+ INSTALL_ROOT=$cache/partial
+ mkdir -p $INSTALL_ROOT
+ if [ $? -ne 0 ]; then
+ echo "Failed to create '$INSTALL_ROOT' directory"
+ return 1
+ fi
+
+ # download a mini altlinux into a cache
+ echo "Downloading altlinux minimal ..."
+ APT_GET="apt-get -o RPM::RootDir=$INSTALL_ROOT -y"
+ PKG_LIST="$(grep -hs '^[^#]' "$profile_dir/$profile")"
+# PKG_LIST="basesystem apt apt-conf-sisyphus etcnet openssh-server passwd sysklogd net-tools e2fsprogs"
+
+ mkdir -p $INSTALL_ROOT/var/lib/rpm
+ rpm --root $INSTALL_ROOT --initdb
+ $APT_GET install $PKG_LIST
+
+ if [ $? -ne 0 ]; then
+ echo "Failed to download the rootfs, aborting."
+ return 1
+ fi
+
+ mv "$INSTALL_ROOT" "$cache/rootfs"
+ echo "Download complete."
+
+ return 0
+}
+
+copy_altlinux()
+{
+
+ # make a local copy of the minialtlinux
+ echo -n "Copying rootfs to $rootfs_path ..."
+ #cp -a $cache/rootfs-$arch $rootfs_path || return 1
+ # i prefer rsync (no reason really)
+ mkdir -p $rootfs_path
+ rsync -a $cache/rootfs/ $rootfs_path/
+ return 0
+}
+
+update_altlinux()
+{
+ chroot $cache/rootfs apt-get update
+ chroot $cache/rootfs apt-get -y dist-upgrade
+}
+
+install_altlinux()
+{
+ mkdir -p /var/lock/subsys/
+ (
+ flock -n -x 200
+ if [ $? -ne 0 ]; then
+ echo "Cache repository is busy."
+ return 1
+ fi
+
+ echo "Checking cache download in $cache/rootfs ... "
+ if [ ! -e "$cache/rootfs" ]; then
+ download_altlinux
+ if [ $? -ne 0 ]; then
+ echo "Failed to download 'altlinux base'"
+ return 1
+ fi
+ else
+ echo "Cache found. Updating..."
+ update_altlinux
+ if [ $? -ne 0 ]; then
+ echo "Failed to update 'altlinux base', continuing with last known good cache"
+ else
+ echo "Update finished"
+ fi
+ fi
+
+ echo "Copy $cache/rootfs to $rootfs_path ... "
+ copy_altlinux
+ if [ $? -ne 0 ]; then
+ echo "Failed to copy rootfs"
+ return 1
+ fi
+
+ return 0
+
+ ) 200>/var/lock/subsys/lxc
+
+ return $?
+}
+
+copy_configuration()
+{
+
+ mkdir -p $config_path
+ cat <<EOF >> $config_path/config
+lxc.utsname = $name
+lxc.tty = 4
+lxc.pts = 1024
+lxc.rootfs = $rootfs_path
+lxc.mount = $config_path/fstab
+#networking
+lxc.network.type = $lxc_network_type
+lxc.network.flags = up
+lxc.network.link = $lxc_network_link
+lxc.network.name = eth0
+lxc.network.mtu = 1500
+#cgroups
+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 > $config_path/fstab
+proc $rootfs_path/proc proc nodev,noexec,nosuid 0 0
+devpts $rootfs_path/dev/pts devpts defaults 0 0
+sysfs $rootfs_path/sys sysfs defaults 0 0
+EOF
+
+ if [ $? -ne 0 ]; then
+ echo "Failed to add configuration"
+ return 1
+ fi
+
+ return 0
+}
+
+clean()
+{
+
+ if [ ! -e $cache ]; then
+ exit 0
+ fi
+
+ # lock, so we won't purge while someone is creating a repository
+ (
+ flock -n -x 200
+ if [ $? != 0 ]; then
+ echo "Cache repository is busy."
+ exit 1
+ fi
+
+ echo -n "Purging the download cache for ALTLinux-$release..."
+ rm --preserve-root --one-file-system -rf $cache && echo "Done." || exit 1
+ exit 0
+
+ ) 200>/var/lock/subsys/lxc
+}
+
+usage()
+{
+ cat <<EOF
+usage:
+ $1 -n|--name=<container_name>
+ [-p|--path=<path>] [-c|--clean] [-R|--release=<ALTLinux_release>]
+ [-P|--profile=<name of the profile>]
+ [-A|--arch=<arch of the container>]
+ [-h|--help]
+Mandatory args:
+ -n,--name container name, used to as an identifier for that container from now on
+Optional args:
+ -p,--path path to where the container rootfs will be created, defaults to /var/lib/lxc. The container config will go under /var/lib/lxc in and case
+ -c,--clean clean the cache
+ -R,--release ALTLinux release for the new container. if the host is ALTLinux, then it will defaultto the host's release.
+ -P,--profile Profile name is the file name in /etc/lxc/profiles contained packages name for install to cache.
+ -A,--arch NOT USED YET. Define what arch the container will be [i686,x86_64]
+ -h,--help print this help
+EOF
+ return 0
+}
+
+options=$(getopt -o hp:n:P:cR: -l help,path:,name:,profile:,clean,release: -- "$@")
+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;;
+ -P|--profile) profile=$2; shift 2;;
+ -c|--clean) clean=$2; shift 2;;
+ -R|--release) release=$2; shift 2;;
+ --) shift 1; break ;;
+ *) break ;;
+ esac
+done
+
+if [ ! -z "$clean" -a -z "$path" ]; then
+ clean || exit 1
+ exit 0
+fi
+
+type apt-get >/dev/null 2>&1
+if [ $? -ne 0 ]; then
+ echo "'apt-get' command is missing"
+ exit 1
+fi
+
+if [ -z "$path" ]; then
+ path=$default_path
+fi
+
+if [ -z "$profile" ]; then
+ profile=$default_profile
+fi
+
+if [ -z "$release" ]; then
+ if [ "$is_altlinux" ]; then
+ release=$(cat /etc/altlinux-release |awk '/^ALT/ {print $3}')
+ else
+ echo "This is not a ALTLinux host and release missing, use -R|--release to specify release"
+ exit 1
+ fi
+fi
+
+if [ "$(id -u)" != "0" ]; then
+ echo "This script should be run as 'root'"
+ exit 1
+fi
+
+rootfs_path=$path/$name/rootfs
+config_path=$default_path/$name
+cache=$cache_base/$release/$profile
+
+if [ -f $config_path/config ]; then
+ echo "A container with that name exists, chose a different name"
+ exit 1
+fi
+
+install_altlinux
+if [ $? -ne 0 ]; then
+ echo "failed to install altlinux"
+ exit 1
+fi
+
+configure_altlinux
+if [ $? -ne 0 ]; then
+ echo "failed to configure altlinux for a container"
+ exit 1
+fi
+
+copy_configuration
+if [ $? -ne 0 ]; then
+ echo "failed write configuration file"
+ exit 1
+fi
+
+if [ ! -z $clean ]; then
+ clean || exit 1
+ exit 0
+fi
+echo "container rootfs and config created"
+echo "container is configured for lxc.network.type=veth and lxc.network.link=virbr0 (which is default if you have libvirt runnig)"
projects / mirror_lxc.git / commitdiff