# 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 along with this library; if not, write to the Free Software
# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
-DISTRO=fedora-10
+#Configurations
+arch=$(arch)
+cache_base=/var/cache/lxc/fedora/$arch
+default_path=/var/lib/lxc
+root_password=rooter
+lxc_network_type=veth
+lxc_network_link=virbr0
+
+# is this fedora?
+[ -f /etc/fedora-release ] && is_fedora=true
configure_fedora()
{
- rootfs=$1
- hostname=$2
# disable selinux in fedora
- mkdir -p $rootfs/selinux
- echo 0 > $rootfs/selinux/enforce
+ mkdir -p $rootfs_path/selinux
+ echo 0 > $rootfs_path/selinux/enforce
# configure the network using the dhcp
- cat <<EOF > $rootfs/etc/network/interfaces
-auto lo
-iface lo inet loopback
-
-auto eth0
-iface eth0 inet dhcp
+ cat <<EOF > ${rootfs_path}/etc/sysconfig/network-scripts/ifcfg-eth0
+DEVICE=eth0
+BOOTPROTO=dhcp
+ONBOOT=yes
+HOSTNAME=${UTSNAME}
+NM_CONTROLLED=no
+TYPE=Ethernet
+MTU=${MTU}
EOF
# 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
-
- # provide the lxc service
- cat <<EOF > $rootfs/etc/init/lxc.conf
-# fake some events needed for correct startup other services
-
-description "Container Upstart"
-
-start on startup
-
-script
- rm -rf /var/run/*.pid
- rm -rf /var/run/network/*
- /sbin/initctl emit stopped JOB=udevtrigger --no-wait
- /sbin/initctl emit started JOB=udev --no-wait
-end script
-EOF
-
- cat <<EOF > $rootfs/etc/init/console.conf
-# console - getty
-#
-# This service maintains a console on tty1 from the point the system is
-# started until it is shut down again.
-
-start on stopped rc RUNLEVEL=[2345]
-stop on runlevel [!2345]
-
-respawn
-exec /sbin/getty -8 38400 /dev/console
+ cat <<EOF > ${rootfs_path}/etc/sysconfig/network
+NETWORKING=yes
+HOSTNAME=${UTSNAME}
EOF
- cat <<EOF > $rootfs/lib/init/fstab
-# /lib/init/fstab: lxc system fstab
-none /spu spufs gid=spu,optional 0 0
-none /tmp none defaults 0 0
-none /var/lock tmpfs nodev,noexec,nosuid,showthrough 0 0
-none /lib/init/rw tmpfs mode=0755,nosuid,optional 0 0
+ # set minimal hosts
+ cat <<EOF > $rootfs_path/etc/hosts
+127.0.0.1 localhost $name
EOF
- # reconfigure some services
- if [ -z "$LANG" ]; then
- chroot $rootfs locale-gen en_US.UTF-8
- chroot $rootfs update-locale LANG=en_US.UTF-8
- else
- chroot $rootfs locale-gen $LANG
- chroot $rootfs update-locale LANG=$LANG
- fi
-
- # remove pointless services in a container
- chroot $rootfs /usr/sbin/update-rc.d -f ondemand remove
-
- chroot $rootfs /bin/bash -c 'cd /etc/init; for f in $(ls u*.conf); do mv $f $f.orig; done'
- chroot $rootfs /bin/bash -c 'cd /etc/init; for f in $(ls tty[2-9].conf); do mv $f $f.orig; done'
- chroot $rootfs /bin/bash -c 'cd /etc/init; for f in $(ls plymouth*.conf); do mv $f $f.orig; done'
- chroot $rootfs /bin/bash -c 'cd /etc/init; for f in $(ls hwclock*.conf); do mv $f $f.orig; done'
- chroot $rootfs /bin/bash -c 'cd /etc/init; for f in $(ls module*.conf); do mv $f $f.orig; done'
-
- echo "Please change root-password !"
- echo "root:root" | chroot $rootfs chpasswd
+ sed -i 's|.sbin.start_udev||' ${rootfs_path}/etc/rc.sysinit
+ sed -i 's|.sbin.start_udev||' ${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
return 0
}
download_fedora()
{
- cache=$1
- arch=$2
# check the mini fedora was not already downloaded
- mkdir -p "$cache/partial-$arch"
+ INSTALL_ROOT=$cache/partial
+ mkdir -p $INSTALL_ROOT
if [ $? -ne 0 ]; then
- echo "Failed to create '$cache/partial-$arch' directory"
+ echo "Failed to create '$INSTALL_ROOT' directory"
return 1
fi
# download a mini fedora into a cache
echo "Downloading fedora minimal ..."
- febootstrap $DISTRO $cache/partial-$arch
+ YUM="yum --installroot $INSTALL_ROOT -y --nogpgcheck"
+ PKG_LIST="yum initscripts passwd rsyslog vim-minimal dhclient chkconfig rootfiles policycoreutils"
+ RELEASE_URL="http://ftp.funet.fi/pub/mirrors/fedora.redhat.com/pub/fedora/linux/releases/$release/Everything/x86_64/os/Packages/fedora-release-$release-1.noarch.rpm"
+ curl $RELEASE_URL > $INSTALL_ROOT/fedora-release-$release.noarch.rpm
+
+ 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 "$1/partial-$arch" "$1/rootfs-$arch"
+ mv "$INSTALL_ROOT" "$cache/rootfs"
echo "Download complete."
return 0
copy_fedora()
{
- cache=$1
- arch=$2
- rootfs=$3
# make a local copy of the minifedora
- echo -n "Copying rootfs to $rootfs ..."
- cp -a $cache/rootfs-$arch $rootfs || return 1
+ 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()
{
- cache="/var/cache/lxc/fedora"
- rootfs=$1
mkdir -p /var/lock/subsys/
(
flock -n -x 200
return 1
fi
- arch=$(arch)
-
- echo "Checking cache download in $cache/rootfs-$arch ... "
- if [ ! -e "$cache/rootfs-$arch" ]; then
- download_fedora $cache $arch
+ 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 $cache/rootfs-$arch to $rootfs ... "
- copy_fedora $cache $arch $rootfs
+ echo "Copy $cache/rootfs to $rootfs_path ... "
+ copy_fedora
if [ $? -ne 0 ]; then
echo "Failed to copy rootfs"
return 1
copy_configuration()
{
- path=$1
- rootfs=$2
- name=$3
- cat <<EOF >> $path/config
+ mkdir -p $config_path
+ cat <<EOF >> $config_path/config
lxc.utsname = $name
-
lxc.tty = 4
lxc.pts = 1024
-lxc.rootfs = $rootfs
-lxc.mount = $path/fstab
-
-lxc.console = /dev/console
-
+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 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
+ 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
if [ $? -ne 0 ]; then
echo "Failed to add configuration"
clean()
{
- cache="/var/cache/lxc/fedora"
if [ ! -e $cache ]; then
exit 0
exit 1
fi
- echo -n "Purging the download cache..."
+ echo -n "Purging the download cache for Fedora-$release..."
rm --preserve-root --one-file-system -rf $cache && echo "Done." || exit 1
exit 0
usage()
{
cat <<EOF
-$1 -h|--help -p|--path=<path> --clean
+usage:
+ $1 -n|--name=<container_name>
+ [-p|--path=<path>] [-c|--clean] [-R|--release=<Fedora_release>] [-A|--arch=<arch of the container>]
+ [-h|--help]
+Mandatory args:
+ -n,--name container name, used to as an identifier for that container from now on
+Optional args:
+ -p,--path path to where the container rootfs will be created, defaults to /var/lib/lxc. The container config will go under /var/lib/lxc in and case
+ -c,--clean clean the cache
+ -R,--release Fedora release for the new container. if the host is Fedora, then it will defaultto the host's release.
+ -A,--arch NOT USED YET. Define what arch the container will be [i686,x86_64]
+ -h,--help print this help
EOF
return 0
}
-options=$(getopt -o hp:n:c -l help,path:,name:,clean -- "$@")
+options=$(getopt -o hp:n:cR: -l help,path:,name:,clean,release: -- "$@")
if [ $? -ne 0 ]; then
usage $(basename $0)
exit 1
-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
exit 0
fi
-type febootstrap
+type yum >/dev/null 2>&1
if [ $? -ne 0 ]; then
- echo "'febootstrap' command is missing"
+ echo "'yum' command is missing"
exit 1
fi
if [ -z "$path" ]; then
- echo "'path' parameter is required"
- exit 1
+ path=$default_path
+fi
+
+if [ -z "$release" ]; then
+ if [ "$is_fedora" ]; then
+ release=$(cat /etc/fedora-release |awk '/^Fedora/ {print $3}')
+ else
+ echo "This is not a fedora host and release missing, use -R|--release to specify release"
+ exit 1
+ fi
fi
if [ "$(id -u)" != "0" ]; then
exit 1
fi
-rootfs=$path/rootfs
+rootfs_path=$path/$name/rootfs
+config_path=$default_path/$name
+cache=$cache_base/$release
+
+if [ -f $config_path/config ]; then
+ echo "A container with that name exists, chose a different name"
+ exit 1
+fi
-install_fedora $rootfs
+install_fedora
if [ $? -ne 0 ]; then
echo "failed to install fedora"
exit 1
fi
-configure_fedora $rootfs $name
+configure_fedora
if [ $? -ne 0 ]; then
echo "failed to configure fedora for a container"
exit 1
fi
-copy_configuration $path $rootfs $name
+copy_configuration
if [ $? -ne 0 ]; then
echo "failed write configuration file"
exit 1
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 / thirdparty / lxc.git / commitdiff
