--- /dev/null
+#!/bin/bash
+
+#
+# template script for generating fedora container for LXC
+#
+
+#
+# lxc: linux Container library
+
+# Authors:
+# Daniel Lezcano <daniel.lezcano@free.fr>
+# Ramez Hanna <rhanna@informatiq.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=$(arch)
+cache_base=/var/cache/lxc/fedora/$arch
+default_path=/var/lib/lxc
+root_password=root
+
+# is this fedora?
+[ -f /etc/fedora-release ] && is_fedora=true
+
+if [ "$arch" = "i686" ]; then
+ arch=i386
+fi
+
+configure_fedora()
+{
+
+ # disable selinux in fedora
+ mkdir -p $rootfs_path/selinux
+ echo 0 > $rootfs_path/selinux/enforce
+
+ # configure the network using the dhcp
+ cat <<EOF > ${rootfs_path}/etc/sysconfig/network-scripts/ifcfg-eth0
+DEVICE=eth0
+BOOTPROTO=dhcp
+ONBOOT=yes
+HOSTNAME=${name}
+NM_CONTROLLED=no
+TYPE=Ethernet
+MTU=${MTU}
+EOF
+
+ # set the hostname
+ cat <<EOF > ${rootfs_path}/etc/sysconfig/network
+NETWORKING=yes
+HOSTNAME=${name}
+EOF
+
+ # set minimal hosts
+ cat <<EOF > $rootfs_path/etc/hosts
+127.0.0.1 localhost $name
+EOF
+
+ sed -i 's|.sbin.start_udev||' ${rootfs_path}/etc/rc.sysinit
+ sed -i 's|.sbin.start_udev||' ${rootfs_path}/etc/rc.d/rc.sysinit
+ # don't mount devpts, for pete's sake
+ sed -i 's/^.*dev.pts.*$/#\0/' ${rootfs_path}/etc/rc.sysinit
+ sed -i 's/^.*dev.pts.*$/#\0/' ${rootfs_path}/etc/rc.d/rc.sysinit
+
+ chroot ${rootfs_path} chkconfig udev-post off
+ chroot ${rootfs_path} chkconfig network on
+
+ dev_path="${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 666 ${dev_path}/random c 1 8
+ mknod -m 666 ${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
+
+ # specifying this in the initial packages doesn't always work.
+ echo "installing fedora-release package"
+ chroot ${rootfs_path} yum --releasever=${release} -y install fedora-release
+
+ # silence some needless startup errors
+ touch ${rootfs_path}/etc/fstab
+
+ # give us a console on /dev/console
+ sed -i 's/ACTIVE_CONSOLES=.*$/ACTIVE_CONSOLES="\/dev\/console \/dev\/tty[1-4]"/' \
+ ${rootfs_path}/etc/sysconfig/init
+
+ return 0
+}
+
+download_fedora()
+{
+
+ # check the mini fedora was not already downloaded
+ INSTALL_ROOT=$cache/partial
+ mkdir -p $INSTALL_ROOT
+ if [ $? -ne 0 ]; then
+ echo "Failed to create '$INSTALL_ROOT' directory"
+ return 1
+ fi
+
+ # download a mini fedora into a cache
+ echo "Downloading fedora minimal ..."
+ YUM="yum --installroot $INSTALL_ROOT -y --nogpgcheck"
+ PKG_LIST="yum initscripts passwd rsyslog vim-minimal dhclient chkconfig rootfiles policycoreutils fedora-release"
+ MIRRORLIST_URL="http://mirrors.fedoraproject.org/mirrorlist?repo=fedora-$release&arch=$arch"
+
+ DOWNLOAD_OK=no
+ for trynumber in 1 2 3; do
+ [ $trynumber != 1 ] && echo "Trying again..."
+ MIRROR_URL=$(curl -s -S -f "$MIRRORLIST_URL" | head -n2 | tail -n1)
+ if [ $? -ne 0 ] || [ -z "$MIRROR_URL" ]; then
+ echo "Failed to get a mirror"
+ continue
+ fi
+ RELEASE_URL="$MIRROR_URL/Packages/fedora-release-$release-1.noarch.rpm"
+ echo "Fetching from $RELEASE_URL"
+ curl -f "$RELEASE_URL" > $INSTALL_ROOT/fedora-release-$release.noarch.rpm
+ if [ $? -ne 0 ]; then
+ echo "Failed to download fedora release rpm"
+ continue
+ fi
+ DOWNLOAD_OK=yes
+ break
+ done
+ if [ $DOWNLOAD_OK != yes ]; then
+ echo "Aborting"
+ return 1
+ fi
+
+ mkdir -p $INSTALL_ROOT/var/lib/rpm
+ rpm --root $INSTALL_ROOT --initdb
+ rpm --root $INSTALL_ROOT -ivh $INSTALL_ROOT/fedora-release-$release.noarch.rpm
+ $YUM 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_fedora()
+{
+
+ # make a local copy of the minifedora
+ 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_fedora()
+{
+ chroot $cache/rootfs yum -y update
+}
+
+install_fedora()
+{
+ mkdir -p /var/lock/subsys/
+ (
+ flock -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_fedora
+ if [ $? -ne 0 ]; then
+ echo "Failed to download 'fedora base'"
+ return 1
+ fi
+ else
+ echo "Cache found. Updating..."
+ update_fedora
+ if [ $? -ne 0 ]; then
+ echo "Failed to update 'fedora base', continuing with last known good cache"
+ else
+ echo "Update finished"
+ fi
+ fi
+
+ echo "Copy $cache/rootfs to $rootfs_path ... "
+ copy_fedora
+ 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
+ grep -q "^lxc.rootfs" $config_path/config 2>/dev/null || echo "lxc.rootfs = $rootfs_path" >> $config_path/config
+ cat <<EOF >> $config_path/config
+lxc.utsname = $name
+lxc.tty = 4
+lxc.pts = 1024
+lxc.mount = $config_path/fstab
+
+# uncomment the next line to run the container unconfined:
+#lxc.aa_profile = unconfined
+
+#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 proc proc nodev,noexec,nosuid 0 0
+sysfs 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 -x 200
+ if [ $? != 0 ]; then
+ echo "Cache repository is busy."
+ exit 1
+ fi
+
+ echo -n "Purging the download cache for Fedora-$release..."
+ rm --preserve-root --one-file-system -rf $cache && echo "Done." || exit 1
+ exit 0
+
+ ) 200>/var/lock/subsys/lxc
+}
+
+usage()
+{
+ cat <<EOF
+usage:
+ $1 -n|--name=<container_name>
+ [-p|--path=<path>] [-c|--clean] [-R|--release=<Fedora_release>] [-A|--arch=<arch of the container>]
+ [-h|--help]
+Mandatory args:
+ -n,--name container name, used to as an identifier for that container from now on
+Optional args:
+ -p,--path path to where the container rootfs will be created, defaults to /var/lib/lxc. The container config will go under /var/lib/lxc in that case
+ -c,--clean clean the cache
+ -R,--release Fedora release for the new container. if the host is Fedora, then it will defaultto the host's release.
+ -A,--arch NOT USED YET. Define what arch the container will be [i686,x86_64]
+ -h,--help print this help
+EOF
+ return 0
+}
+
+options=$(getopt -o hp:n:cR: -l help,path:,name:,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;;
+ -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
+
+needed_pkgs=""
+type yum >/dev/null 2>&1
+if [ $? -ne 0 ]; then
+ needed_pkgs="yum $needed_pkgs"
+fi
+
+type curl >/dev/null 2>&1
+if [ $? -ne 0 ]; then
+ needed_pkgs="curl $needed_pkgs"
+fi
+
+if [ -n "$needed_pkgs" ]; then
+ echo "Missing commands: $needed_pkgs"
+ echo "Please install these using \"sudo apt-get install $needed_pkgs\""
+ exit 1
+fi
+
+if [ -z "$path" ]; then
+ path=$default_path
+fi
+
+if [ -z "$release" ]; then
+ if [ "$is_fedora" ]; then
+ release=$(cat /etc/fedora-release |awk '/^Fedora/ {print $3}')
+ else
+ echo "This is not a fedora host and release missing, defaulting to 14. use -R|--release to specify release"
+ release=14
+ fi
+fi
+
+if [ "$(id -u)" != "0" ]; then
+ echo "This script should be run as 'root'"
+ exit 1
+fi
+
+
+rootfs_path=$path/rootfs
+# check for 'lxc.rootfs' passed in through default config by lxc-create
+if grep -q '^lxc.rootfs' $path/config 2>/dev/null ; then
+ rootfs_path=`grep 'lxc.rootfs =' $path/config | awk -F= '{ print $2 }'`
+fi
+config_path=$default_path/$name
+cache=$cache_base/$release
+
+revert()
+{
+ echo "Interrupted, so cleaning up"
+ lxc-destroy -n $name
+ # maybe was interrupted before copy config
+ rm -rf $path/$name
+ rm -rf $default_path/$name
+ echo "exiting..."
+ exit 1
+}
+
+trap revert SIGHUP SIGINT SIGTERM
+
+copy_configuration
+if [ $? -ne 0 ]; then
+ echo "failed write configuration file"
+ exit 1
+fi
+
+install_fedora
+if [ $? -ne 0 ]; then
+ echo "failed to install fedora"
+ exit 1
+fi
+
+configure_fedora
+if [ $? -ne 0 ]; then
+ echo "failed to configure fedora for a container"
+ exit 1
+fi
+
+
+if [ ! -z $clean ]; then
+ clean || exit 1
+ exit 0
+fi
+echo "container rootfs and config created"
projects / lab.git / blobdiff