[lxc-devel] [PATCH 2/2] Add initial oneiric template
Stéphane Graber
stgraber at ubuntu.com
Tue May 24 18:19:09 UTC 2011
---
.gitignore | 1 +
configure.ac | 1 +
templates/Makefile.am | 1 +
templates/lxc-oneiric.in | 285 ++++++++++++++++++++++++++++++++++++++++++++++
4 files changed, 288 insertions(+), 0 deletions(-)
create mode 100644 templates/lxc-oneiric.in
diff --git a/.gitignore b/.gitignore
index 777e757..962ecea 100644
--- a/.gitignore
+++ b/.gitignore
@@ -28,6 +28,7 @@ templates/lxc-debian
templates/lxc-lucid
templates/lxc-maverick
templates/lxc-natty
+templates/lxc-oneiric
templates/lxc-fedora
templates/lxc-sshd
templates/lxc-busybox
diff --git a/configure.ac b/configure.ac
index 9e65486..6cce1b4 100644
--- a/configure.ac
+++ b/configure.ac
@@ -142,6 +142,7 @@ AC_CONFIG_FILES([
templates/lxc-lucid
templates/lxc-maverick
templates/lxc-natty
+ templates/lxc-oneiric
templates/lxc-busybox
templates/lxc-fedora
templates/lxc-sshd
diff --git a/templates/Makefile.am b/templates/Makefile.am
index f0750e6..cfdf8f9 100644
--- a/templates/Makefile.am
+++ b/templates/Makefile.am
@@ -6,6 +6,7 @@ templates_SCRIPTS = \
lxc-lucid \
lxc-maverick \
lxc-natty \
+ lxc-oneiric \
lxc-fedora \
lxc-busybox \
lxc-sshd
diff --git a/templates/lxc-oneiric.in b/templates/lxc-oneiric.in
new file mode 100644
index 0000000..3b08a0e
--- /dev/null
+++ b/templates/lxc-oneiric.in
@@ -0,0 +1,285 @@
+#!/bin/bash
+
+#
+# template script for generating ubuntu/oneiric container for LXC
+#
+# This script is based on lxc-debian (Daniel Lezcano <daniel.lezcano at free.fr>)
+#
+
+# Copyright © 2010 Wilhelm Meier
+# Author: Wilhelm Meier <wilhelm.meier at fh-kl.de>
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License version 2, as
+# published by the Free Software Foundation.
+
+# This program 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 General Public License for more details.
+
+# You should have received a copy of the GNU General Public License along
+# with this program; if not, write to the Free Software Foundation, Inc.,
+# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+#
+
+configure_ubuntu()
+{
+ rootfs=$1
+ hostname=$2
+
+ # configure the network using the dhcp
+ cat <<EOF > $rootfs/etc/network/interfaces
+auto lo
+iface lo inet loopback
+
+auto eth0
+iface eth0 inet dhcp
+EOF
+
+ # so you can 'ssh $hostname.' or 'ssh $hostname.local'
+ sed -i "s/<hostname>/$hostname/" $rootfs/etc/dhcp/dhclient.conf
+
+ # set the hostname
+ cat <<EOF > $rootfs/etc/hostname
+$hostname
+EOF
+ # set minimal hosts
+ cat <<EOF > $rootfs/etc/hosts
+127.0.0.1 localhost $hostname
+EOF
+
+ # suppress log level output for udev
+ sed -i "s/=\"err\"/=0/" $rootfs/etc/udev/udev.conf
+
+ # tweak consoles
+ rm -f $rootfs/etc/init/tty{5,6}.conf
+ cp $rootfs/etc/init/tty1.conf $rootfs/etc/init/console.conf
+ sed -i 's/tty1/\/dev\/console/' $rootfs/etc/init/console.conf
+
+ # don't let upstart mount anything from its builtin fs
+ echo "#Emptied out by lxc-oneiric template" > $rootfs/lib/init/fstab
+
+ echo "Please change root-password !"
+ echo "root:root" | chroot $rootfs chpasswd
+
+ return 0
+}
+
+download_ubuntu()
+{
+ packages=dialog,apt,apt-utils,resolvconf,iproute,inetutils-ping,vim,isc-dhcp-client,isc-dhcp-common,ssh,lsb-release,gnupg
+
+ cache=$1
+ arch=$2
+
+ # check the mini ubuntu was not already downloaded
+ mkdir -p "$cache/partial-$arch"
+ if [ $? -ne 0 ]; then
+ echo "Failed to create '$cache/partial-$arch' directory"
+ return 1
+ fi
+
+ # download a mini ubuntu into a cache
+ echo "Downloading ubuntu oneiric minimal ..."
+ debootstrap --verbose --variant=minbase --components=main,universe --arch=$arch --include=$packages oneiric $cache/partial-$arch
+ if [ $? -ne 0 ]; then
+ echo "Failed to download the rootfs, aborting."
+ return 1
+ fi
+
+ mv "$1/partial-$arch" "$1/rootfs-$arch"
+ echo "Download complete."
+
+ return 0
+}
+
+copy_ubuntu()
+{
+ cache=$1
+ arch=$2
+ rootfs=$3
+
+ # make a local copy of the miniubuntu
+ echo -n "Copying rootfs to $rootfs ..."
+ cp -a $cache/rootfs-$arch $rootfs || return 1
+ return 0
+}
+
+install_ubuntu()
+{
+ cache="/var/cache/lxc/oneiric"
+ rootfs=$1
+ mkdir -p /var/lock/subsys/
+ (
+ flock -n -x 200
+ if [ $? -ne 0 ]; then
+ echo "Cache repository is busy."
+ return 1
+ fi
+
+ arch=$(dpkg --print-architecture)
+
+ echo "Checking cache download in $cache/rootfs-$arch ... "
+ if [ ! -e "$cache/rootfs-$arch" ]; then
+ download_ubuntu $cache $arch
+ if [ $? -ne 0 ]; then
+ echo "Failed to download 'ubuntu oneiric base'"
+ return 1
+ fi
+ fi
+
+ echo "Copy $cache/rootfs-$arch to $rootfs ... "
+ copy_ubuntu $cache $arch $rootfs
+ if [ $? -ne 0 ]; then
+ echo "Failed to copy rootfs"
+ return 1
+ fi
+
+ return 0
+
+ ) 200>/var/lock/subsys/lxc
+
+ return $?
+}
+
+copy_configuration()
+{
+ path=$1
+ rootfs=$2
+ name=$3
+
+ cat <<EOF >> $path/config
+lxc.utsname = $name
+
+lxc.tty = 4
+lxc.pts = 1024
+lxc.rootfs = $rootfs
+lxc.mount = $path/fstab
+
+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 > $path/fstab
+proc $rootfs/proc proc nodev,noexec,nosuid 0 0
+sysfs $rootfs/sys sysfs defaults 0 0
+EOF
+
+ if [ $? -ne 0 ]; then
+ echo "Failed to add configuration"
+ return 1
+ fi
+
+ return 0
+}
+
+clean()
+{
+ cache="/var/cache/lxc/oneiric"
+
+ 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..."
+ rm --preserve-root --one-file-system -rf $cache && echo "Done." || exit 1
+ exit 0
+
+ ) 200>/var/lock/subsys/lxc
+}
+
+usage()
+{
+ cat <<EOF
+$1 -h|--help -p|--path=<path> --clean
+EOF
+ return 0
+}
+
+options=$(getopt -o hp:n:c -l help,path:,name:,clean -- "$@")
+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;;
+ -c|--clean) clean=$2; shift 2;;
+ --) shift 1; break ;;
+ *) break ;;
+ esac
+done
+
+if [ ! -z "$clean" -a -z "$path" ]; then
+ clean || exit 1
+ exit 0
+fi
+
+type debootstrap
+if [ $? -ne 0 ]; then
+ echo "'debootstrap' command is missing"
+ exit 1
+fi
+
+if [ -z "$path" ]; then
+ echo "'path' parameter is required"
+ exit 1
+fi
+
+if [ "$(id -u)" != "0" ]; then
+ echo "This script should be run as 'root'"
+ exit 1
+fi
+
+rootfs=$path/rootfs
+
+install_ubuntu $rootfs
+if [ $? -ne 0 ]; then
+ echo "failed to install ubuntu oneiric"
+ exit 1
+fi
+
+configure_ubuntu $rootfs $name
+if [ $? -ne 0 ]; then
+ echo "failed to configure ubuntu oneiric for a container"
+ exit 1
+fi
+
+copy_configuration $path $rootfs $name
+if [ $? -ne 0 ]; then
+ echo "failed write configuration file"
+ exit 1
+fi
+
+if [ ! -z $clean ]; then
+ clean || exit 1
+ exit 0
+fi
--
1.7.5.1
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