# This script consolidates and extends the existing lxc ubuntu scripts
#
-# XXX todo: add -lvm option
-
-# Copyright © 2011 Serge Hallyn <serge.hallyn@canonical.com>
-# Copyright © 2010 Wilhelm Meier
+# Copyright © 2011 Serge Hallyn <serge.hallyn@canonical.com>
+# Copyright © 2010 Wilhelm Meier
# Author: Wilhelm Meier <wilhelm.meier@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.
-#
+# 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+
+set -e
+
+LOCALSTATEDIR="@LOCALSTATEDIR@"
+LXC_TEMPLATE_CONFIG="@LXCTEMPLATECONFIG@"
if [ -r /etc/default/lxc ]; then
. /etc/default/lxc
{
rootfs=$1
hostname=$2
+ release=$3
+ user=$4
+ password=$5
- # configure the network using the dhcp
+ # configure the network using the dhcp
cat <<EOF > $rootfs/etc/network/interfaces
+# This file describes the network interfaces available on your system
+# and how to activate them. For more information, see interfaces(5).
+
+# The loopback network interface
auto lo
iface lo inet loopback
iface eth0 inet dhcp
EOF
- # so you can 'ssh $hostname.' or 'ssh $hostname.local'
- if [ -f $rootfs/etc/dhcp/dhclient.conf ]; then
- sed -i "s/<hostname>/$hostname/" $rootfs/etc/dhcp/dhclient.conf
- elif [ -f $rootfs/etc/dhcp3/dhclient.conf ]; then
- sed -i "s/<hostname>/$hostname/" $rootfs/etc/dhcp3/dhclient.conf
- fi
-
# set the hostname
cat <<EOF > $rootfs/etc/hostname
$hostname
EOF
# set minimal hosts
cat <<EOF > $rootfs/etc/hosts
-127.0.0.1 localhost $hostname
+127.0.0.1 localhost
+127.0.1.1 $hostname
+
+# The following lines are desirable for IPv6 capable hosts
+::1 ip6-localhost ip6-loopback
+fe00::0 ip6-localnet
+ff00::0 ip6-mcastprefix
+ff02::1 ip6-allnodes
+ff02::2 ip6-allrouters
+EOF
+
+ if [ ! -f $rootfs/etc/init/container-detect.conf ]; then
+ # suppress log level output for udev
+ sed -i "s/=\"err\"/=0/" $rootfs/etc/udev/udev.conf
+
+ # remove jobs for consoles 5 and 6 since we only create 4 consoles in
+ # this template
+ rm -f $rootfs/etc/init/tty{5,6}.conf
+ fi
+
+ if [ -z "$bindhome" ]; then
+ chroot $rootfs useradd --create-home -s /bin/bash $user
+ echo "$user:$password" | chroot $rootfs chpasswd
+ fi
+
+ # make sure we have the current locale defined in the container
+ if [ -z "$LANG" ] || echo $LANG | grep -E -q "^C(\..+)*$"; 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
+
+ # generate new SSH keys
+ if [ -x $rootfs$LOCALSTATEDIR/lib/dpkg/info/openssh-server.postinst ]; then
+ cat > $rootfs/usr/sbin/policy-rc.d << EOF
+#!/bin/sh
+exit 101
EOF
+ chmod +x $rootfs/usr/sbin/policy-rc.d
- # suppress log level output for udev
- sed -i "s/=\"err\"/=0/" $rootfs/etc/udev/udev.conf
+ rm -f $rootfs/etc/ssh/ssh_host_*key*
+ mv $rootfs/etc/init/ssh.conf $rootfs/etc/init/ssh.conf.disabled
+ DPKG_MAINTSCRIPT_PACKAGE=openssh DPKG_MAINTSCRIPT_NAME=postinst chroot $rootfs $LOCALSTATEDIR/lib/dpkg/info/openssh-server.postinst configure
+ mv $rootfs/etc/init/ssh.conf.disabled $rootfs/etc/init/ssh.conf
- # remove jobs for consoles 5 and 6 since we only create 4 consoles in
- # this template
- rm -f $rootfs/etc/init/tty{5,6}.conf
+ sed -i "s/root@$(hostname)/root@$hostname/g" $rootfs/etc/ssh/ssh_host_*.pub
- echo "Please change root-password !"
- echo "root:root" | chroot $rootfs chpasswd
+ rm -f $rootfs/usr/sbin/policy-rc.d
+ fi
return 0
}
+# finish setting up the user in the container by injecting ssh key and
+# adding sudo group membership.
+# passed-in user is either 'ubuntu' or the user to bind in from host.
+finalize_user()
+{
+ user=$1
+
+ sudo_version=$(chroot $rootfs dpkg-query -W -f='${Version}' sudo)
+
+ if chroot $rootfs dpkg --compare-versions $sudo_version gt "1.8.3p1-1"; then
+ groups="sudo"
+ else
+ groups="sudo admin"
+ fi
+
+ for group in $groups; do
+ chroot $rootfs groupadd --system $group >/dev/null 2>&1 || true
+ chroot $rootfs adduser ${user} $group >/dev/null 2>&1 || true
+ done
+
+ if [ -n "$auth_key" -a -f "$auth_key" ]; then
+ u_path="/home/${user}/.ssh"
+ root_u_path="$rootfs/$u_path"
+ mkdir -p $root_u_path
+ cp $auth_key "$root_u_path/authorized_keys"
+ chroot $rootfs chown -R ${user}: "$u_path"
+
+ echo "Inserted SSH public key from $auth_key into /home/${user}/.ssh/authorized_keys"
+ fi
+ return 0
+}
+
+# A function to try and autodetect squid-deb-proxy servers on the local network
+# if either the squid-deb-proxy-client package is installed on the host or
+# a parent container set the 50squid-deb-proxy-client file.
+squid_deb_proxy_autodetect()
+{
+ local apt_discover=/usr/share/squid-deb-proxy-client/apt-avahi-discover
+ local proxy_file=/etc/apt/apt.conf.d/50squid-deb-proxy-client
+ squid_proxy_line= # That's a global :/
+
+ # Maybe the host is aware of a squid-deb-proxy?
+ if [ -f $apt_discover ]; then
+ echo -n "Discovering squid-deb-proxy..."
+ squid_proxy_line=$($apt_discover)
+ if [ -n "$squid_proxy_line" ]; then
+ echo "found squid-deb-proxy: $squid_proxy_line"
+ else
+ echo "no squid-deb-proxy found"
+ fi
+ fi
+
+ # Are we in a nested container, and the parent already knows of a proxy?
+ if [ -f $proxy_file ]; then
+ # Extract the squid URL from the file (whatever is between "")
+ squid_proxy_line=`cat $proxy_file | sed "s/.*\"\(.*\)\".*/\1/"`
+ fi
+}
+
+#
+# Choose proxies for container
+# http_proxy will be used by debootstrap on the host.
+# APT_PROXY will be used to set /etc/apt/apt.conf.d/70proxy in the container.
+#
+choose_container_proxy()
+{
+ local rootfs=$1
+ local arch=$2
+
+ if [ -z "$HTTP_PROXY" ]; then
+ HTTP_PROXY="none"
+ fi
+ case "$HTTP_PROXY" in
+ none)
+ squid_deb_proxy_autodetect
+ if [ -n "$squid_proxy_line" ]; then
+ APT_PROXY=$squid_proxy_line
+ export http_proxy=$squid_proxy_line
+ else
+ APT_PROXY=
+ fi
+ ;;
+ apt)
+ RES=`apt-config shell APT_PROXY Acquire::http::Proxy`
+ eval $RES
+ [ -z "$APT_PROXY" ] || export http_proxy=$APT_PROXY
+ ;;
+ *)
+ APT_PROXY=$HTTP_PROXY
+ export http_proxy=$HTTP_PROXY
+ ;;
+ esac
+}
+
+write_sourceslist()
+{
+ # $1 => path to the rootfs
+ # $2 => architecture we want to add
+ # $3 => whether to use the multi-arch syntax or not
+
+ if [ -n "$APT_PROXY" ]; then
+ mkdir -p $rootfs/etc/apt/apt.conf.d
+ cat > $rootfs/etc/apt/apt.conf.d/70proxy << EOF
+Acquire::http::Proxy "$APT_PROXY" ;
+EOF
+ fi
+
+ case $2 in
+ amd64|i386)
+ MIRROR=${MIRROR:-http://archive.ubuntu.com/ubuntu}
+ SECURITY_MIRROR=${SECURITY_MIRROR:-http://security.ubuntu.com/ubuntu}
+ ;;
+ *)
+ MIRROR=${MIRROR:-http://ports.ubuntu.com/ubuntu-ports}
+ SECURITY_MIRROR=${SECURITY_MIRROR:-http://ports.ubuntu.com/ubuntu-ports}
+ ;;
+ esac
+ if [ -n "$3" ]; then
+ cat >> "$1/etc/apt/sources.list" << EOF
+deb [arch=$2] $MIRROR ${release} main restricted universe multiverse
+deb [arch=$2] $MIRROR ${release}-updates main restricted universe multiverse
+deb [arch=$2] $SECURITY_MIRROR ${release}-security main restricted universe multiverse
+EOF
+ else
+ cat >> "$1/etc/apt/sources.list" << EOF
+deb $MIRROR ${release} main restricted universe multiverse
+deb $MIRROR ${release}-updates main restricted universe multiverse
+deb $SECURITY_MIRROR ${release}-security main restricted universe multiverse
+EOF
+ fi
+}
+
+install_packages()
+{
+ local rootfs="$1"
+ shift
+ local packages="$*"
+ if [ -z $update ]
+ then
+ chroot $rootfs apt-get update
+ update=true
+ fi
+ if [ -n "${packages}" ]
+ then
+ chroot $rootfs apt-get install --force-yes -y --no-install-recommends ${packages}
+ fi
+}
+
+cleanup()
+{
+ rm -rf $cache/partial-$arch
+ rm -rf $cache/rootfs-$arch
+}
+
+suggest_flush()
+{
+ echo "Container upgrade failed. The container cache may be out of date,"
+ echo "in which case flushing the cache (see -F in the help output) may help."
+}
+
download_ubuntu()
{
cache=$1
arch=$2
release=$3
- if [ $release = "lucid" ]; then
- packages=dialog,apt,apt-utils,resolvconf,iproute,inetutils-ping,vim,dhcp3-client,ssh,lsb-release,gnupg
- elif [ $release = "maverick" ]; then
- packages=dialog,apt,apt-utils,resolvconf,iproute,inetutils-ping,vim,dhcp3-client,ssh,lsb-release,gnupg,netbase
- elif [ $release = "natty" ]; then
- packages=dialog,apt,apt-utils,resolvconf,iproute,inetutils-ping,vim,isc-dhcp-client,isc-dhcp-common,ssh,lsb-release,gnupg,netbase
- else
- packages=dialog,apt,apt-utils,iproute,inetutils-ping,vim,isc-dhcp-client,isc-dhcp-common,ssh,lsb-release,gnupg,netbase,ubuntu-keyring
+ packages_template=${packages_template:-"ssh,vim"}
+
+ # Try to guess a list of langpacks to install
+ langpacks="language-pack-en"
+
+ if which dpkg >/dev/null 2>&1; then
+ langpacks=`(echo $langpacks &&
+ dpkg -l | grep -E "^ii language-pack-[a-z]* " |
+ cut -d ' ' -f3) | sort -u`
fi
- echo "installing packages: $packages"
+ packages_template="${packages_template},$(echo $langpacks | sed 's/ /,/g')"
+
+
+ echo "Installing packages in template: ${packages_template}"
+ trap cleanup EXIT SIGHUP SIGINT SIGTERM
# check the mini ubuntu was not already downloaded
mkdir -p "$cache/partial-$arch"
if [ $? -ne 0 ]; then
return 1
fi
+ choose_container_proxy $cache/partial-$arch/ $arch
# download a mini ubuntu into a cache
echo "Downloading ubuntu $release minimal ..."
- debootstrap --verbose --components=main,universe --arch=$arch --include=$packages $release $cache/partial-$arch $MIRROR
- if [ $? -ne 0 ]; then
- echo "Failed to download the rootfs, aborting."
- return 1
+ if [ -n "$(which qemu-debootstrap)" ]; then
+ qemu-debootstrap --verbose --components=main,universe --arch=$arch --include=${packages_template} $release $cache/partial-$arch $MIRROR
+ else
+ debootstrap --verbose --components=main,universe --arch=$arch --include=${packages_template} $release $cache/partial-$arch $MIRROR
fi
- echo "Installing updates"
- if [ -z "$MIRROR" ]; then
- MIRROR="http://archive.ubuntu.com/ubuntu"
- fi
- cat >> "$1/partial-${arch}/etc/apt/sources.list" << EOF
-deb $MIRROR ${release}-updates main universe
-deb http://security.ubuntu.com/ubuntu ${release}-security main universe
-EOF
- chroot "$1/partial-${arch}" apt-get update
if [ $? -ne 0 ]; then
- echo "Failed to update the apt cache"
- return 1
- fi
- cat > "$1/partial-${arch}"/usr/sbin/policy-rc.d << EOF
-#!/bin/sh
-exit 101
-EOF
- chmod +x "$1/partial-${arch}"/usr/sbin/policy-rc.d
-
- chroot "$1/partial-${arch}" apt-get dist-upgrade -y
- ret=$?
-
- rm -f "$1/partial-${arch}"/usr/sbin/policy-rc.d
- if [ $ret -ne 0 ]; then
- echo "Failed to upgrade the cache"
- return 1
+ echo "Failed to download the rootfs, aborting."
+ return 1
fi
# Serge isn't sure whether we should avoid doing this when
# $release == `distro-info -d`
echo "Installing updates"
- case $arch in
- amd64|i386)
- MIRROR=${MIRROR:-http://archive.ubuntu.com/ubuntu}
- SECURITY_MIRROR=${SECURITY_MIRROR:-http://security.ubuntu.com/ubuntu}
- ;;
- sparc)
- case $SUITE in
- gutsy)
- MIRROR=${MIRROR:-http://archive.ubuntu.com/ubuntu}
- SECURITY_MIRROR=${SECURITY_MIRRORMIRROR:-http://security.ubuntu.com/ubuntu}
- ;;
- *)
- MIRROR=${MIRROR:-http://ports.ubuntu.com/ubuntu-ports}
- SECURITY_MIRROR=${SECURITY_MIRROR:-http://ports.ubuntu.com/ubuntu-ports}
- ;;
- esac
- ;;
- *)
- MIRROR=${MIRROR:-http://ports.ubuntu.com/ubuntu-ports}
- SECURITY_MIRROR=${SECURITY_MIRROR:-http://ports.ubuntu.com/ubuntu-ports}
- ;;
- esac
- cat >> "$1/partial-${arch}/etc/apt/sources.list" << EOF
-deb $MIRROR ${release}-updates main universe
-deb $SECURITY_MIRROR ${release}-security main universe
-EOF
+ > $cache/partial-$arch/etc/apt/sources.list
+ write_sourceslist $cache/partial-$arch/ $arch
+
chroot "$1/partial-${arch}" apt-get update
if [ $? -ne 0 ]; then
echo "Failed to update the apt cache"
EOF
chmod +x "$1/partial-${arch}"/usr/sbin/policy-rc.d
- lxc-unshare -s MOUNT -- chroot "$1/partial-${arch}" apt-get dist-upgrade -y
- ret=$?
+ lxc-unshare -s MOUNT -- chroot "$1/partial-${arch}" apt-get dist-upgrade -y || { suggest_flush; false; }
rm -f "$1/partial-${arch}"/usr/sbin/policy-rc.d
- if [ $ret -ne 0 ]; then
- echo "Failed to upgrade the cache"
- return 1
- fi
+ chroot "$1/partial-${arch}" apt-get clean
mv "$1/partial-$arch" "$1/rootfs-$arch"
+ trap EXIT
+ trap SIGINT
+ trap SIGTERM
+ trap SIGHUP
echo "Download complete"
return 0
}
rootfs=$3
# make a local copy of the miniubuntu
- echo -n "Copying rootfs to $rootfs ..."
- cp -a $cache/rootfs-$arch $rootfs || return 1
+ echo "Copying rootfs to $rootfs ..."
+ mkdir -p $rootfs
+ rsync -Ha $cache/rootfs-$arch/ $rootfs/ || return 1
return 0
}
{
rootfs=$1
release=$2
- cache="/var/cache/lxc/$release"
- mkdir -p /var/lock/subsys/
+ flushcache=$3
+ cache="$LOCALSTATEDIR/cache/lxc/$release"
+ mkdir -p $LOCALSTATEDIR/lock/subsys/
+
(
- flock -n -x 200
- if [ $? -ne 0 ]; then
- echo "Cache repository is busy."
- return 1
- fi
+ flock -x 9
+ if [ $? -ne 0 ]; then
+ echo "Cache repository is busy."
+ return 1
+ fi
- echo "Checking cache download in $cache/rootfs-$arch ... "
- if [ ! -e "$cache/rootfs-$arch" ]; then
- download_ubuntu $cache $arch $release
- if [ $? -ne 0 ]; then
- echo "Failed to download 'ubuntu $release base'"
- return 1
- fi
- fi
+ if [ $flushcache -eq 1 ]; then
+ echo "Flushing cache..."
+ rm -rf "$cache/partial-$arch"
+ rm -rf "$cache/rootfs-$arch"
+ 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
+ echo "Checking cache download in $cache/rootfs-$arch ... "
+ if [ ! -e "$cache/rootfs-$arch" ]; then
+ download_ubuntu $cache $arch $release
+ if [ $? -ne 0 ]; then
+ echo "Failed to download 'ubuntu $release base'"
+ return 1
+ fi
+ fi
- return 0
+ echo "Copy $cache/rootfs-$arch to $rootfs ... "
+ copy_ubuntu $cache $arch $rootfs
+ if [ $? -ne 0 ]; then
+ echo "Failed to copy rootfs"
+ return 1
+ fi
- ) 200>/var/lock/subsys/lxc
+ return 0
+
+ ) 9>$LOCALSTATEDIR/lock/subsys/lxc-ubuntu$release
return $?
}
rootfs=$2
name=$3
arch=$4
+ release=$5
if [ $arch = "i386" ]; then
arch="i686"
fi
+ # if there is exactly one veth network entry, make sure it has an
+ # associated hwaddr.
+ nics=`grep -e '^lxc\.network\.type[ \t]*=[ \t]*veth' $path/config | wc -l`
+ if [ $nics -eq 1 ]; then
+ grep -q "^lxc.network.hwaddr" $path/config || sed -i -e "/^lxc\.network\.type[ \t]*=[ \t]*veth/a lxc.network.hwaddr = 00:16:3e:$(openssl rand -hex 3| sed 's/\(..\)/\1:/g; s/.$//')" $path/config
+ fi
+
+ # Generate the configuration file
+ ## Create the fstab (empty by default)
+ touch $path/fstab
+
+ ## Relocate all the network config entries
+ sed -i -e "/lxc.network/{w ${path}/config-network" -e "d}" $path/config
+
+ ## Relocate any other config entries
+ sed -i -e "/lxc./{w ${path}/config-auto" -e "d}" $path/config
+
+ ## Add all the includes
+ echo "" >> $path/config
+ echo "# Common configuration" >> $path/config
+ if [ -e "${LXC_TEMPLATE_CONFIG}/ubuntu.common.conf" ]; then
+ echo "lxc.include = ${LXC_TEMPLATE_CONFIG}/ubuntu.common.conf" >> $path/config
+ fi
+ if [ -e "${LXC_TEMPLATE_CONFIG}/ubuntu.${release}.conf" ]; then
+ echo "lxc.include = ${LXC_TEMPLATE_CONFIG}/ubuntu.${release}.conf" >> $path/config
+ fi
+
+ ## Add the container-specific config
+ echo "" >> $path/config
+ echo "# Container specific configuration" >> $path/config
+ [ -e "$path/config-auto" ] && cat $path/config-auto >> $path/config && rm $path/config-auto
+ grep -q "^lxc.rootfs" $path/config 2>/dev/null || echo "lxc.rootfs = $rootfs" >> $path/config
cat <<EOF >> $path/config
+lxc.mount = $path/fstab
lxc.utsname = $name
-
-lxc.tty = 4
-lxc.pts = 1024
-lxc.rootfs = $rootfs
-lxc.mount = $path/fstab
lxc.arch = $arch
-lxc.cap.drop = sys_module mac_admin mac_override
-
-lxc.cgroup.devices.deny = a
-# Allow any mknod (but not using the node)
-lxc.cgroup.devices.allow = c *:* m
-lxc.cgroup.devices.allow = b *:* m
-# /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
-#fuse
-lxc.cgroup.devices.allow = c 10:229 rwm
-#tun
-lxc.cgroup.devices.allow = c 10:200 rwm
-#full
-lxc.cgroup.devices.allow = c 1:7 rwm
-#hpet
-lxc.cgroup.devices.allow = c 10:228 rwm
-#kvm
-lxc.cgroup.devices.allow = c 10:232 rwm
EOF
- cat <<EOF > $path/fstab
-proc $rootfs/proc proc nodev,noexec,nosuid 0 0
-sysfs $rootfs/sys sysfs defaults 0 0
-EOF
+ ## Re-add the previously removed network config
+ echo "" >> $path/config
+ echo "# Network configuration" >> $path/config
+ cat $path/config-network >> $path/config
+ rm $path/config-network
if [ $? -ne 0 ]; then
- echo "Failed to add configuration"
- return 1
+ echo "Failed to add configuration"
+ return 1
fi
return 0
}
-trim()
+post_process()
{
rootfs=$1
release=$2
+ packages=$3
- # 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
+ # Disable service startup
+ cat > $rootfs/usr/sbin/policy-rc.d << EOF
+#!/bin/sh
+exit 101
EOF
+ chmod +x $rootfs/usr/sbin/policy-rc.d
- # fix buggus runlevel with sshd
- cat <<EOF > $rootfs/etc/init/ssh.conf
-# ssh - OpenBSD Secure Shell server
-#
-# The OpenSSH server provides secure shell access to the system.
+ if [ ! -f $rootfs/etc/init/container-detect.conf ]; then
+ # Make sure we have a working resolv.conf
+ cresolvonf="${rootfs}/etc/resolv.conf"
+ mv $cresolvonf ${cresolvonf}.lxcbak
+ cat /etc/resolv.conf > ${cresolvonf}
-description "OpenSSH server"
+ # for lucid, if not trimming, then add the ubuntu-virt
+ # ppa and install lxcguest
+ if [ $release = "lucid" ]; then
+ chroot $rootfs apt-get update
+ install_packages $rootfs "python-software-properties"
+ chroot $rootfs add-apt-repository ppa:ubuntu-virt/ppa
+ fi
-start on filesystem
-stop on runlevel [!2345]
+ chroot $rootfs apt-get update
+ chroot $rootfs apt-get install --force-yes -y lxcguest
-expect fork
-respawn
-respawn limit 10 5
-umask 022
-# replaces SSHD_OOM_ADJUST in /etc/default/ssh
-oom never
+ # Restore old resolv.conf
+ rm -f ${cresolvonf}
+ mv ${cresolvonf}.lxcbak ${cresolvonf}
+ fi
-pre-start script
- test -x /usr/sbin/sshd || { stop; exit 0; }
- test -e /etc/ssh/sshd_not_to_be_run && { stop; exit 0; }
- test -c /dev/null || { stop; exit 0; }
+ # If the container isn't running a native architecture, setup multiarch
+ if [ -x "$(ls -1 ${rootfs}/usr/bin/qemu-*-static 2>/dev/null)" ]; then
+ dpkg_version=$(chroot $rootfs dpkg-query -W -f='${Version}' dpkg)
+ if chroot $rootfs dpkg --compare-versions $dpkg_version ge "1.16.2"; then
+ chroot $rootfs dpkg --add-architecture ${hostarch}
+ else
+ mkdir -p ${rootfs}/etc/dpkg/dpkg.cfg.d
+ echo "foreign-architecture ${hostarch}" > ${rootfs}/etc/dpkg/dpkg.cfg.d/lxc-multiarch
+ fi
- mkdir -p -m0755 /var/run/sshd
-end script
+ # Save existing value of MIRROR and SECURITY_MIRROR
+ DEFAULT_MIRROR=$MIRROR
+ DEFAULT_SECURITY_MIRROR=$SECURITY_MIRROR
-# if you used to set SSHD_OPTS in /etc/default/ssh, you can change the
-# 'exec' line here instead
-exec /usr/sbin/sshd
-EOF
+ # Write a new sources.list containing both native and multiarch entries
+ > ${rootfs}/etc/apt/sources.list
+ write_sourceslist $rootfs $arch "native"
- cat <<EOF > $rootfs/etc/init/console.conf
-# console - getty
-#
-# This service maintains a console on tty1 from the point the system is
-# started until it is shut down again.
-
-start on stopped rc RUNLEVEL=[2345]
-stop on runlevel [!2345]
+ MIRROR=$DEFAULT_MIRROR
+ SECURITY_MIRROR=$DEFAULT_SECURITY_MIRROR
+ write_sourceslist $rootfs $hostarch "multiarch"
-respawn
-exec /sbin/getty -8 38400 /dev/console
-EOF
+ # Finally update the lists and install upstart using the host architecture
+ HOST_PACKAGES="upstart:${hostarch} mountall:${hostarch} isc-dhcp-client:${hostarch}"
+ chroot $rootfs apt-get update
+ if chroot $rootfs dpkg -l iproute2 | grep -q ^ii; then
+ HOST_PACKAGES="$HOST_PACKAGES iproute2:${hostarch}"
+ else
+ HOST_PACKAGES="$HOST_PACKAGES iproute:${hostarch}"
+ fi
+ install_packages $rootfs $HOST_PACKAGES
+ fi
- cat <<EOF > $rootfs/lib/init/fstab
-# /lib/init/fstab: cleared out for bare-bones lxc
-EOF
+ # Install Packages in container
+ if [ -n "$packages" ]
+ then
+ local packages="`echo $packages | sed 's/,/ /g'`"
+ echo "Installing packages: ${packages}"
+ install_packages $rootfs $packages
+ fi
- # reconfigure some services
- if [ -z "$LANG" ]; then
- chroot $rootfs locale-gen en_US.UTF-8
- chroot $rootfs update-locale LANG=en_US.UTF-8
+ # Set initial timezone as on host
+ if [ -f /etc/timezone ]; then
+ cat /etc/timezone > $rootfs/etc/timezone
+ chroot $rootfs dpkg-reconfigure -f noninteractive tzdata
+ elif [ -f /etc/sysconfig/clock ]; then
+ . /etc/sysconfig/clock
+ echo $ZONE > $rootfs/etc/timezone
+ chroot $rootfs dpkg-reconfigure -f noninteractive tzdata
else
- chroot $rootfs locale-gen $LANG
- chroot $rootfs update-locale LANG=$LANG
+ echo "Timezone in container is not configured. Adjust it manually."
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'
-
- # if this isn't lucid, then we need to twiddle the network upstart bits :(
- if [ $release != "lucid" ]; then
- sed -i 's/^.*emission handled.*$/echo Emitting lo/' $rootfs/etc/network/if-up.d/upstart
+ # rmdir /dev/shm for containers that have /run/shm
+ # I'm afraid of doing rm -rf $rootfs/dev/shm, in case it did
+ # get bind mounted to the host's /run/shm. So try to rmdir
+ # it, and in case that fails move it out of the way.
+ # NOTE: This can only be removed once 12.04 goes out of support
+ if [ ! -L $rootfs/dev/shm ] && [ -d $rootfs/run/shm ] && [ -e $rootfs/dev/shm ]; then
+ rmdir $rootfs/dev/shm 2>/dev/null || mv $rootfs/dev/shm $rootfs/dev/shm.bak
+ ln -s /run/shm $rootfs/dev/shm
fi
-}
-post_process()
-{
- rootfs=$1
- release=$2
- trim_container=$3
-
- if [ $trim_container -eq 1 ]; then
- trim $rootfs $release
- else
- # for lucid and maverick, if not trimming, then add the ubuntu-virt
- # ppa and install lxcguest
- if [ $release = "lucid" -o $release = "maverick" ]; then
- chroot $rootfs apt-get install --force-yes -y python-software-properties
- chroot $rootfs add-apt-repository ppa:ubuntu-virt/ppa
- fi
- cp /etc/resolv.conf "${rootfs}/etc"
- chroot $rootfs apt-get update
- chroot $rootfs apt-get install --force-yes -y lxcguest
- fi
+ # Re-enable service startup
+ rm $rootfs/usr/sbin/policy-rc.d
}
do_bindhome()
user=$2
# copy /etc/passwd, /etc/shadow, and /etc/group entries into container
- pwd=`getent passwd $user`
- if [ $? -ne 0 ]; then
- echo 'Warning: failed to copy password entry for $user'
- return
- else
- echo $pwd >> $rootfs/etc/passwd
+ pwd=`getent passwd $user` || { echo "Failed to copy password entry for $user"; false; }
+ echo $pwd >> $rootfs/etc/passwd
+
+ # make sure user's shell exists in the container
+ shell=`echo $pwd | cut -d: -f 7`
+ if [ ! -x $rootfs/$shell ]; then
+ echo "shell $shell for user $user was not found in the container."
+ pkg=`dpkg -S $(readlink -m $shell) | cut -d ':' -f1`
+ echo "Installing $pkg"
+ install_packages $rootfs $pkg
fi
+
shad=`getent shadow $user`
- echo $shad >> $rootfs/etc/shadow
+ echo "$shad" >> $rootfs/etc/shadow
# bind-mount the user's path into the container's /home
h=`getent passwd $user | cut -d: -f 6`
mkdir -p $rootfs/$h
- echo "$h $rootfs/$h none bind 0 0" >> $path/fstab
-}
-clean()
-{
- release=$1
- cache="/var/cache/lxc/$release"
-
- 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 $cache && echo "Done." || exit 1
- exit 0
-
- ) 200>/var/lock/subsys/lxc
+ # use relative path in container
+ h2=${h#/}
+ while [ ${h2:0:1} = "/" ]; do
+ h2=${h2#/}
+ done
+ echo "$h $h2 none bind 0 0" >> $path/fstab
+
+ # Make sure the group exists in container
+ grp=`echo $pwd | cut -d: -f 4` # group number for $user
+ grpe=`getent group $grp` || return 0 # if host doesn't define grp, ignore in container
+ chroot $rootfs getent group "$grpe" || echo "$grpe" >> $rootfs/etc/group
}
usage()
{
cat <<EOF
-$1 -h|--help -p|--path=<path> --clean [-a|--arch] [-b|--bindhome <user>] [--trim] [-r|--release]
-release: lucid | maverick | natty | oneiric | precise
-trim: make a minimal (faster, but not upgrade-safe) container
+$1 -h|--help [-a|--arch] [-b|--bindhome <user>] [-d|--debug]
+ [-F | --flush-cache] [-r|--release <release>] [ -S | --auth-key <keyfile>]
+ [--rootfs <rootfs>] [--packages <packages>] [-u|--user <user>] [--password <password>]
+release: the ubuntu release (e.g. precise): defaults to host release on ubuntu, otherwise uses latest LTS
bindhome: bind <user>'s home into the container
-arch: amd64 or i386: defaults to host arch
+ The ubuntu user will not be created, and <user> will have
+ sudo access.
+arch: the container architecture (e.g. amd64): defaults to host arch
+auth-key: SSH Public key file to inject into container
+packages: list of packages to add comma separated
EOF
return 0
}
-options=$(getopt -o a:b:hp:r:xn:c -l arch:,bindhome:,help,path:,release:,trim,name:,clean -- "$@")
+options=$(getopt -o a:b:hp:r:n:FS:du: -l arch:,bindhome:,help,path:,release:,name:,flush-cache,auth-key:,debug,rootfs:,packages:,user:,password:,mirror:,security-mirror: -- "$@")
if [ $? -ne 0 ]; then
usage $(basename $0)
exit 1
fi
eval set -- "$options"
-release=lucid
+release=precise # Default to the last Ubuntu LTS release for non-Ubuntu systems
if [ -f /etc/lsb-release ]; then
. /etc/lsb-release
- case "$DISTRIB_CODENAME" in
- lucid|maverick|natty|oneiric|precise)
- release=$DISTRIB_CODENAME
- ;;
- esac
+ if [ "$DISTRIB_ID" = "Ubuntu" ]; then
+ release=$DISTRIB_CODENAME
+ fi
fi
bindhome=
-arch=$(arch)
# Code taken from debootstrap
if [ -x /usr/bin/dpkg ] && /usr/bin/dpkg --print-architecture >/dev/null 2>&1; then
arch=`/usr/bin/dpkg --print-architecture`
-elif type udpkg >/dev/null 2>&1 && udpkg --print-architecture >/dev/null 2>&1; then
+elif which udpkg >/dev/null 2>&1 && udpkg --print-architecture >/dev/null 2>&1; then
arch=`/usr/bin/udpkg --print-architecture`
else
- arch=$(arch)
+ arch=$(uname -m)
if [ "$arch" = "i686" ]; then
arch="i386"
elif [ "$arch" = "x86_64" ]; then
arch="amd64"
elif [ "$arch" = "armv7l" ]; then
- arch="armel"
+ arch="armhf"
fi
fi
-trim_container=0
+debug=0
hostarch=$arch
+flushcache=0
+packages=""
+user="ubuntu"
+password="ubuntu"
while true
do
case "$1" in
-h|--help) usage $0 && exit 0;;
+ --rootfs) rootfs=$2; shift 2;;
-p|--path) path=$2; shift 2;;
-n|--name) name=$2; shift 2;;
- -c|--clean) clean=$2; shift 2;;
+ -u|--user) user=$2; shift 2;;
+ --password) password=$2; shift 2;;
+ -F|--flush-cache) flushcache=1; shift 1;;
-r|--release) release=$2; shift 2;;
+ --packages) packages=$2; shift 2;;
-b|--bindhome) bindhome=$2; shift 2;;
-a|--arch) arch=$2; shift 2;;
- -x|--trim) trim_container=1; shift 1;;
+ -S|--auth-key) auth_key=$2; shift 2;;
+ -d|--debug) debug=1; shift 1;;
+ --mirror) MIRROR=$2; shift 2;;
+ --security-mirror) SECURITY_MIRROR=$2; shift 2;;
--) shift 1; break ;;
*) break ;;
esac
done
-pwd=`getent passwd $bindhome`
-if [ $? -ne 0 ]; then
- echo "Error: no password entry found for $bindhome"
- exit 1
+if [ $debug -eq 1 ]; then
+ set -x
+fi
+
+if [ -n "$bindhome" ]; then
+ pwd=`getent passwd $bindhome`
+ if [ $? -ne 0 ]; then
+ echo "Error: no password entry found for $bindhome"
+ exit 1
+ fi
fi
-if [ "$arch" == "i686" ]; then
+if [ "$arch" = "i686" ]; then
arch=i386
fi
-if [ ! -z "$clean" -a -z "$path" ]; then
- clean || exit 1
- exit 0
+if [ $hostarch = "i386" -a $arch = "amd64" ]; then
+ echo "can't create $arch container on $hostarch"
+ exit 1
fi
-if [ $hostarch = "i386" -a $arch = "amd64" ]; then
- echo "can't create amd64 container on i386"
+if [ $hostarch = "armhf" -o $hostarch = "armel" ] && \
+ [ $arch != "armhf" -a $arch != "armel" ]; then
+ echo "can't create $arch container on $hostarch"
exit 1
fi
-type debootstrap
-if [ $? -ne 0 ]; then
- echo "'debootstrap' command is missing"
+if [ $hostarch = "powerpc" -a $arch != "powerpc" ]; then
+ echo "can't create $arch container on $hostarch"
exit 1
fi
+which debootstrap >/dev/null 2>&1 || { echo "'debootstrap' command is missing" >&2; false; }
+
if [ -z "$path" ]; then
echo "'path' parameter is required"
exit 1
exit 1
fi
-rootfs=$path/rootfs
+# detect rootfs
+config="$path/config"
+# if $rootfs exists here, it was passed in with --rootfs
+if [ -z "$rootfs" ]; then
+ if grep -q '^lxc.rootfs' $config 2>/dev/null ; then
+ rootfs=$(awk -F= '/^lxc.rootfs =/{ print $2 }' $config)
+ else
+ rootfs=$path/rootfs
+ fi
+fi
-install_ubuntu $rootfs $release
+install_ubuntu $rootfs $release $flushcache
if [ $? -ne 0 ]; then
echo "failed to install ubuntu $release"
exit 1
fi
-configure_ubuntu $rootfs $name
+configure_ubuntu $rootfs $name $release $user $password
if [ $? -ne 0 ]; then
echo "failed to configure ubuntu $release for a container"
exit 1
fi
-copy_configuration $path $rootfs $name $arch
+copy_configuration $path $rootfs $name $arch $release
if [ $? -ne 0 ]; then
echo "failed write configuration file"
exit 1
fi
-post_process $rootfs $release $trim_container
-if [ ! -z $bindhome ]; then
- do_bindhome $rootfs $bindhome
+post_process $rootfs $release $trim_container $packages
+
+if [ -n "$bindhome" ]; then
+ do_bindhome $rootfs $bindhome
+ finalize_user $bindhome
+else
+ finalize_user $user
fi
-if [ ! -z $clean ]; then
- clean $release || exit 1
- exit 0
+echo ""
+echo "##"
+if [ -n "$bindhome" ]; then
+ echo "# Log in as user $bindhome"
+else
+ echo "# The default user is '$user' with password '$password'!"
+ echo "# Use the 'sudo' command to run tasks as root in the container."
fi
+echo "##"
+echo ""
projects / mirror_lxc.git / blobdiff