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Add ubuntu-cloud template
This is a new template to create containers based on the ubuntu cloud images, rather than using debootstrap. Signed-off-by: Serge Hallyn <serge.hallyn@canonical.com> Signed-off-by: Daniel Lezcano <dlezcano@fr.ibm.com>
This commit is contained in:
Serge Hallyn
Daniel Lezcano
parent
6880563d9d
commit
d1458ac8d1
@ -141,6 +141,7 @@ AC_CONFIG_FILES([
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templates/lxc-lenny
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templates/lxc-debian
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templates/lxc-ubuntu
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templates/lxc-ubuntu-cloud
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templates/lxc-opensuse
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templates/lxc-busybox
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templates/lxc-fedora
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@ -4,6 +4,7 @@ templates_SCRIPTS = \
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lxc-debian \
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lxc-lenny \
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lxc-ubuntu \
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lxc-ubuntu-cloud \
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lxc-opensuse \
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lxc-fedora \
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lxc-altlinux \
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250
templates/lxc-ubuntu-cloud.in
Normal file
250
templates/lxc-ubuntu-cloud.in
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@ -0,0 +1,250 @@
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#!/bin/bash
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# template script for generating ubuntu container for LXC based on daily cloud
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# images
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#
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# Copyright © 2012 Serge Hallyn <serge.hallyn@canonical.com>
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#
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License version 2, as
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# published by the Free Software Foundation.
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# This program 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
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# GNU General Public License for more details.
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# You should have received a copy of the GNU General Public License along
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# with this program; if not, write to the Free Software Foundation, Inc.,
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# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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#
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set -e
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if [ -r /etc/default/lxc ]; then
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. /etc/default/lxc
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fi
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copy_configuration()
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{
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path=$1
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rootfs=$2
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name=$3
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arch=$4
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if [ $arch = "i386" ]; then
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arch="i686"
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fi
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cat <<EOF >> $path/config
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lxc.utsname = $name
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lxc.tty = 4
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lxc.pts = 1024
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lxc.rootfs = $rootfs
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lxc.mount = $path/fstab
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lxc.arch = $arch
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lxc.cap.drop = sys_module mac_admin
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lxc.cgroup.devices.deny = a
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# Allow any mknod (but not using the node)
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lxc.cgroup.devices.allow = c *:* m
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lxc.cgroup.devices.allow = b *:* m
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# /dev/null and zero
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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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# consoles
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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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# /dev/{,u}random
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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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# rtc
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lxc.cgroup.devices.allow = c 254:0 rwm
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#fuse
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lxc.cgroup.devices.allow = c 10:229 rwm
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#tun
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lxc.cgroup.devices.allow = c 10:200 rwm
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#full
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lxc.cgroup.devices.allow = c 1:7 rwm
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#hpet
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lxc.cgroup.devices.allow = c 10:228 rwm
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#kvm
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lxc.cgroup.devices.allow = c 10:232 rwm
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EOF
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cat <<EOF > $path/fstab
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proc $rootfs/proc proc nodev,noexec,nosuid 0 0
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sysfs $rootfs/sys sysfs defaults 0 0
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EOF
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return 0
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}
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usage()
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{
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cat <<EOF
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$1 -h|--help [-a|--arch] [-F | --flush-cache] [-r|--release <release>]
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release: lucid | maverick | natty | oneiric | precise
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arch: amd64 or i386: defaults to host arch
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EOF
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return 0
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}
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options=$(getopt -o a:hp:r:n:Fi:C -l arch:,help,path:,release:,name:,flush-cache,hostid:,cloud -- "$@")
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if [ $? -ne 0 ]; then
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usage $(basename $0)
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exit 1
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fi
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eval set -- "$options"
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release=lucid
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if [ -f /etc/lsb-release ]; then
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. /etc/lsb-release
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case "$DISTRIB_CODENAME" in
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lucid|maverick|natty|oneiric|precise)
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release=$DISTRIB_CODENAME
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;;
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esac
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fi
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arch=$(arch)
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# Code taken from debootstrap
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if [ -x /usr/bin/dpkg ] && /usr/bin/dpkg --print-architecture >/dev/null 2>&1; then
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arch=`/usr/bin/dpkg --print-architecture`
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elif type udpkg >/dev/null 2>&1 && udpkg --print-architecture >/dev/null 2>&1; then
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arch=`/usr/bin/udpkg --print-architecture`
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else
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arch=$(arch)
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if [ "$arch" = "i686" ]; then
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arch="i386"
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elif [ "$arch" = "x86_64" ]; then
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arch="amd64"
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elif [ "$arch" = "armv7l" ]; then
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arch="armel"
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fi
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fi
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hostarch=$arch
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cloud=0
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flushcache=0
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while true
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do
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case "$1" in
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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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-F|--flush-cache) flushcache=1; shift 1;;
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-r|--release) release=$2; shift 2;;
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-a|--arch) arch=$2; shift 2;;
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-i|--hostid) host_id=$2; shift 2;;
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-u|--userdata) userdata=$2; shift 2;;
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-C|--cloud) cloud=1; shift 1;;
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--) shift 1; break ;;
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*) break ;;
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esac
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done
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if [ "$arch" == "i686" ]; then
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arch=i386
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fi
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if [ $hostarch = "i386" -a $arch = "amd64" ]; then
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echo "can't create amd64 container on i386"
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exit 1
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fi
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if [ $arch != "i386" -a $arch != "amd64" ]; then
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echo "Only i386 and amd64 are supported by the ubuntu cloud template."
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exit 1
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fi
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if [ -z "$path" ]; then
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echo "'path' parameter is required"
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exit 1
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fi
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if [ "$(id -u)" != "0" ]; then
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echo "This script should be run as 'root'"
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exit 1
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fi
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rootfs=$path/rootfs
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type ubuntu-cloudimg-query
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type wget
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# determine the url, tarball, and directory names
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# download if needed
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cache="/var/cache/lxc/cloud-$release"
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mkdir -p $cache
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url1=`ubuntu-cloudimg-query precise daily $arch --format "%{url}\n"`
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url2=`echo $url1 | sed -e 's/.tar.gz/-root\0/'`
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filename=`basename $url2`
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mkdir -p /var/lock/subsys/
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(
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flock -n -x 200
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cd $cache
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if [ $flushcache -eq 1 ]; then
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echo "Clearing the cached images"
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rm -f $filename
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fi
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if [ ! -f $filename ]; then
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wget $url2
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fi
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echo "Extracting rootfs"
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mkdir -p $rootfs
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cd $rootfs
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tar -zxf $cache/$filename
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if [ $cloud -eq 0 ]; then
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echo "Configuring for running outside of a cloud environment"
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echo "If you want to configure for a cloud evironment, please use '-- -C' to create the container"
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seed_d=$rootfs/var/lib/cloud/seed/nocloud-net
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rhostid=$(uuidgen | cut -c -8)
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host_id=${hostid:-$rhostid}
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mkdir -p $seed_d
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cat > "$seed_d/meta-data" <<EOF
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instance_id: lxc-$host_id
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EOF
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if [ ! -f $userdata ]; then
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cp $userdata $seed_d/user-data
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else
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echo "#cloud-config" > $seed_d/user-data
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if [ -z "$MIRROR" ]; then
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MIRROR="http://archive.ubuntu.com/ubuntu"
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fi
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echo "apt-mirror: $MIRROR" >> $seed_d/user-data
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fi
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chroot $rootfs /usr/sbin/usermod -U ubuntu
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echo "Please login as user ubuntu with password ubuntu."
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else
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echo "Configured for running in a cloud environment."
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echo "If you do not have a meta-data service, this container will likely be useless."
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fi
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) 200>/var/lock/subsys/lxc-ubucloud
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copy_configuration $path $rootfs $name $arch
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echo "Container $name created."
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exit 0
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