templates/lxc-ubuntu.in

   1 #!/bin/bash
   2
   3 #
   4 # template script for generating ubuntu container for LXC
   5 #
   6 # This script consolidates and extends the existing lxc ubuntu scripts
   7 #
   8
   9 # Copyright © 2011 Serge Hallyn <serge.hallyn@canonical.com>
  10 # Copyright © 2010 Wilhelm Meier
  11 # Author: Wilhelm Meier <wilhelm.meier@fh-kl.de>
  12 #
  13 # This program is free software; you can redistribute it and/or modify
  14 # it under the terms of the GNU General Public License version 2, as
  15 # published by the Free Software Foundation.
  16
  17 # This program is distributed in the hope that it will be useful,
  18 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  19 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  20 # GNU General Public License for more details.
  21
  22 # You should have received a copy of the GNU General Public License along
  23 # with this program; if not, write to the Free Software Foundation, Inc.,
  24 # 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  25 #
  26
  27 set -e
  28
  29 if [ -r /etc/default/lxc ]; then
  30     . /etc/default/lxc
  31 fi
  32
  33 configure_ubuntu()
  34 {
  35     rootfs=$1
  36     hostname=$2
  37     release=$3
  38
  39    # configure the network using the dhcp
  40     cat <<EOF > $rootfs/etc/network/interfaces
  41 auto lo
  42 iface lo inet loopback
  43
  44 auto eth0
  45 iface eth0 inet dhcp
  46 EOF
  47
  48     # set the hostname
  49     cat <<EOF > $rootfs/etc/hostname
  50 $hostname
  51 EOF
  52     # set minimal hosts
  53     cat <<EOF > $rootfs/etc/hosts
  54 127.0.0.1 localhost $hostname
  55 EOF
  56
  57     if [ "$release" != "precise" ] && [ "$release" != "quantal" ]; then
  58         # suppress log level output for udev
  59         sed -i "s/=\"err\"/=0/" $rootfs/etc/udev/udev.conf
  60
  61         # remove jobs for consoles 5 and 6 since we only create 4 consoles in
  62         # this template
  63         rm -f $rootfs/etc/init/tty{5,6}.conf
  64     fi
  65
  66     if [ -z "$bindhome" ]; then
  67         chroot $rootfs useradd --create-home -s /bin/bash ubuntu
  68         echo "ubuntu:ubuntu" | chroot $rootfs chpasswd
  69     fi
  70
  71     return 0
  72 }
  73
  74 # finish setting up the user in the container by injecting ssh key and
  75 # adding sudo group membership.
  76 # passed-in user is either 'ubuntu' or the user to bind in from host.
  77 finalize_user()
  78 {
  79     user=$1
  80
  81     if [ "$release" = "precise" ] || [ "$release" = "quantal" ]; then
  82         groups="sudo"
  83     else
  84         groups="sudo admin"
  85     fi
  86
  87     for group in $groups; do
  88         chroot $rootfs groupadd --system $group >/dev/null 2>&1 || true
  89         chroot $rootfs adduser ${user} $group >/dev/null 2>&1 || true
  90     done
  91
  92     if [ -n "$auth_key" -a -f "$auth_key" ]; then
  93         u_path="/home/${user}/.ssh"
  94         root_u_path="$rootfs/$u_path"
  95         mkdir -p $root_u_path
  96         cp $auth_key "$root_u_path/authorized_keys"
  97         chroot $rootfs chown -R ${user}: "$u_path"
  98
  99         echo "Inserted SSH public key from $auth_key into /home/${user}/.ssh/authorized_keys"
 100     fi
 101     return 0
 102 }
 103
 104 write_sourceslist()
 105 {
 106     # $1 => path to the rootfs
 107     # $2 => architecture we want to add
 108     # $3 => whether to use the multi-arch syntax or not
 109
 110     case $2 in
 111       amd64|i386)
 112             MIRROR=${MIRROR:-http://archive.ubuntu.com/ubuntu}
 113             SECURITY_MIRROR=${SECURITY_MIRROR:-http://security.ubuntu.com/ubuntu}
 114             ;;
 115       sparc)
 116             case $SUITE in
 117               gutsy)
 118             MIRROR=${MIRROR:-http://archive.ubuntu.com/ubuntu}
 119             SECURITY_MIRROR=${SECURITY_MIRRORMIRROR:-http://security.ubuntu.com/ubuntu}
 120             ;;
 121               *)
 122             MIRROR=${MIRROR:-http://ports.ubuntu.com/ubuntu-ports}
 123             SECURITY_MIRROR=${SECURITY_MIRROR:-http://ports.ubuntu.com/ubuntu-ports}
 124             ;;
 125             esac
 126             ;;
 127       *)
 128             MIRROR=${MIRROR:-http://ports.ubuntu.com/ubuntu-ports}
 129             SECURITY_MIRROR=${SECURITY_MIRROR:-http://ports.ubuntu.com/ubuntu-ports}
 130             ;;
 131     esac
 132     if [ -n "$3" ]; then
 133         cat >> "$1/etc/apt/sources.list" << EOF
 134 deb [arch=$2] $MIRROR ${release} main restricted universe multiverse
 135 deb [arch=$2] $MIRROR ${release}-updates main restricted universe multiverse
 136 deb [arch=$2] $SECURITY_MIRROR ${release}-security main restricted universe multiverse
 137 EOF
 138     else
 139         cat >> "$1/etc/apt/sources.list" << EOF
 140 deb $MIRROR ${release} main restricted universe multiverse
 141 deb $MIRROR ${release}-updates main restricted universe multiverse
 142 deb $SECURITY_MIRROR ${release}-security main restricted universe multiverse
 143 EOF
 144     fi
 145 }
 146
 147 download_ubuntu()
 148 {
 149     cache=$1
 150     arch=$2
 151     release=$3
 152
 153     if [ $release = "lucid" ]; then
 154         packages=dialog,apt,apt-utils,resolvconf,iproute,inetutils-ping,vim,dhcp3-client,ssh,lsb-release,gnupg
 155     elif [ $release = "maverick" ]; then
 156         packages=dialog,apt,apt-utils,resolvconf,iproute,inetutils-ping,vim,dhcp3-client,ssh,lsb-release,gnupg,netbase
 157     elif [ $release = "natty" ]; then
 158         packages=dialog,apt,apt-utils,resolvconf,iproute,inetutils-ping,vim,isc-dhcp-client,isc-dhcp-common,ssh,lsb-release,gnupg,netbase
 159     else
 160         packages=dialog,apt,apt-utils,iproute,inetutils-ping,vim,isc-dhcp-client,isc-dhcp-common,ssh,lsb-release,gnupg,netbase,ubuntu-keyring
 161     fi
 162     echo "installing packages: $packages"
 163
 164     # check the mini ubuntu was not already downloaded
 165     mkdir -p "$cache/partial-$arch"
 166     if [ $? -ne 0 ]; then
 167         echo "Failed to create '$cache/partial-$arch' directory"
 168         return 1
 169     fi
 170
 171     # download a mini ubuntu into a cache
 172     echo "Downloading ubuntu $release minimal ..."
 173     if [ -n "$(which qemu-debootstrap)" ]; then
 174         qemu-debootstrap --verbose --components=main,universe --arch=$arch --include=$packages $release $cache/partial-$arch $MIRROR
 175     else
 176         debootstrap --verbose --components=main,universe --arch=$arch --include=$packages $release $cache/partial-$arch $MIRROR
 177     fi
 178
 179     if [ $? -ne 0 ]; then
 180         echo "Failed to download the rootfs, aborting."
 181             return 1
 182     fi
 183
 184     echo "Installing updates"
 185     if [ -z "$MIRROR" ]; then
 186         MIRROR="http://archive.ubuntu.com/ubuntu"
 187     fi
 188     cat >> "$1/partial-${arch}/etc/apt/sources.list" << EOF
 189 deb $MIRROR ${release}-updates main universe
 190 deb http://security.ubuntu.com/ubuntu ${release}-security main universe
 191 EOF
 192     chroot "$1/partial-${arch}" apt-get update
 193     if [ $? -ne 0 ]; then
 194         echo "Failed to update the apt cache"
 195         return 1
 196     fi
 197     cat > "$1/partial-${arch}"/usr/sbin/policy-rc.d << EOF
 198 #!/bin/sh
 199 exit 101
 200 EOF
 201     chmod +x "$1/partial-${arch}"/usr/sbin/policy-rc.d
 202
 203     chroot "$1/partial-${arch}" apt-get dist-upgrade -y
 204     ret=$?
 205
 206     rm -f "$1/partial-${arch}"/usr/sbin/policy-rc.d
 207     if [ $ret -ne 0 ]; then
 208         echo "Failed to upgrade the cache"
 209         return 1
 210     fi
 211
 212     # Serge isn't sure whether we should avoid doing this when
 213     # $release == `distro-info -d`
 214     echo "Installing updates"
 215     > $cache/partial-$arch/etc/apt/sources.list
 216     write_sourceslist $cache/partial-$arch/ $arch
 217
 218     chroot "$1/partial-${arch}" apt-get update
 219     if [ $? -ne 0 ]; then
 220         echo "Failed to update the apt cache"
 221         return 1
 222     fi
 223     cat > "$1/partial-${arch}"/usr/sbin/policy-rc.d << EOF
 224 #!/bin/sh
 225 exit 101
 226 EOF
 227     chmod +x "$1/partial-${arch}"/usr/sbin/policy-rc.d
 228
 229     lxc-unshare -s MOUNT -- chroot "$1/partial-${arch}" apt-get dist-upgrade -y
 230     ret=$?
 231     rm -f "$1/partial-${arch}"/usr/sbin/policy-rc.d
 232
 233     if [ $ret -ne 0 ]; then
 234         echo "Failed to upgrade the cache"
 235         return 1
 236     fi
 237
 238     mv "$1/partial-$arch" "$1/rootfs-$arch"
 239     echo "Download complete"
 240     return 0
 241 }
 242
 243 copy_ubuntu()
 244 {
 245     cache=$1
 246     arch=$2
 247     rootfs=$3
 248
 249     # make a local copy of the miniubuntu
 250     echo "Copying rootfs to $rootfs ..."
 251     mkdir -p $rootfs
 252     rsync -a $cache/rootfs-$arch/ $rootfs/ || return 1
 253     return 0
 254 }
 255
 256 install_ubuntu()
 257 {
 258     rootfs=$1
 259     release=$2
 260     flushcache=$3
 261     cache="/var/cache/lxc/$release"
 262     mkdir -p /var/lock/subsys/
 263     (
 264         flock -n -x 200
 265         if [ $? -ne 0 ]; then
 266             echo "Cache repository is busy."
 267             return 1
 268         fi
 269
 270
 271     if [ $flushcache -eq 1 ]; then
 272         echo "Flushing cache..."
 273         rm -rf "$cache/partial-$arch"
 274         rm -rf "$cache/rootfs-$arch"
 275     fi
 276
 277         echo "Checking cache download in $cache/rootfs-$arch ... "
 278         if [ ! -e "$cache/rootfs-$arch" ]; then
 279             download_ubuntu $cache $arch $release
 280             if [ $? -ne 0 ]; then
 281                 echo "Failed to download 'ubuntu $release base'"
 282                 return 1
 283             fi
 284         fi
 285
 286         echo "Copy $cache/rootfs-$arch to $rootfs ... "
 287         copy_ubuntu $cache $arch $rootfs
 288         if [ $? -ne 0 ]; then
 289             echo "Failed to copy rootfs"
 290             return 1
 291         fi
 292
 293         return 0
 294
 295         ) 200>/var/lock/subsys/lxc
 296
 297     return $?
 298 }
 299
 300 copy_configuration()
 301 {
 302     path=$1
 303     rootfs=$2
 304     name=$3
 305     arch=$4
 306     release=$5
 307
 308     if [ $arch = "i386" ]; then
 309         arch="i686"
 310     fi
 311
 312     ttydir=""
 313     if [ $release = "precise" ] || [ $release = "quantal" ]; then
 314         ttydir=" lxc"
 315     fi
 316
 317     # if there is exactly one veth network entry, make sure it has an
 318     # associated hwaddr.
 319     nics=`grep -e '^lxc\.network\.type[ \t]*=[ \t]*veth' $path/config | wc -l`
 320     if [ $nics -eq 1 ]; then
 321         grep -q "^lxc.network.hwaddr" $path/config || cat <<EOF >> $path/config
 322 lxc.network.hwaddr = 00:16:3e:$(openssl rand -hex 3| sed 's/\(..\)/\1:/g; s/.$//')
 323 EOF
 324     fi
 325
 326     cat <<EOF >> $path/config
 327 lxc.utsname = $name
 328
 329 lxc.devttydir =$ttydir
 330 lxc.tty = 4
 331 lxc.pts = 1024
 332 lxc.rootfs = $rootfs
 333 lxc.mount  = $path/fstab
 334 lxc.arch = $arch
 335 lxc.cap.drop = sys_module mac_admin mac_override
 336
 337 lxc.cgroup.devices.deny = a
 338 # Allow any mknod (but not using the node)
 339 lxc.cgroup.devices.allow = c *:* m
 340 lxc.cgroup.devices.allow = b *:* m
 341 # /dev/null and zero
 342 lxc.cgroup.devices.allow = c 1:3 rwm
 343 lxc.cgroup.devices.allow = c 1:5 rwm
 344 # consoles
 345 lxc.cgroup.devices.allow = c 5:1 rwm
 346 lxc.cgroup.devices.allow = c 5:0 rwm
 347 #lxc.cgroup.devices.allow = c 4:0 rwm
 348 #lxc.cgroup.devices.allow = c 4:1 rwm
 349 # /dev/{,u}random
 350 lxc.cgroup.devices.allow = c 1:9 rwm
 351 lxc.cgroup.devices.allow = c 1:8 rwm
 352 lxc.cgroup.devices.allow = c 136:* rwm
 353 lxc.cgroup.devices.allow = c 5:2 rwm
 354 # rtc
 355 lxc.cgroup.devices.allow = c 254:0 rwm
 356 #fuse
 357 lxc.cgroup.devices.allow = c 10:229 rwm
 358 #tun
 359 lxc.cgroup.devices.allow = c 10:200 rwm
 360 #full
 361 lxc.cgroup.devices.allow = c 1:7 rwm
 362 #hpet
 363 lxc.cgroup.devices.allow = c 10:228 rwm
 364 #kvm
 365 lxc.cgroup.devices.allow = c 10:232 rwm
 366 EOF
 367
 368     cat <<EOF > $path/fstab
 369 proc            proc         proc    nodev,noexec,nosuid 0 0
 370 sysfs           sys          sysfs defaults  0 0
 371 EOF
 372
 373     if [ $? -ne 0 ]; then
 374         echo "Failed to add configuration"
 375         return 1
 376     fi
 377
 378     return 0
 379 }
 380
 381 trim()
 382 {
 383     rootfs=$1
 384     release=$2
 385
 386     # provide the lxc service
 387     cat <<EOF > $rootfs/etc/init/lxc.conf
 388 # fake some events needed for correct startup other services
 389
 390 description     "Container Upstart"
 391
 392 start on startup
 393
 394 script
 395         rm -rf /var/run/*.pid
 396         rm -rf /var/run/network/*
 397         /sbin/initctl emit stopped JOB=udevtrigger --no-wait
 398         /sbin/initctl emit started JOB=udev --no-wait
 399 end script
 400 EOF
 401
 402     # fix buggus runlevel with sshd
 403     cat <<EOF > $rootfs/etc/init/ssh.conf
 404 # ssh - OpenBSD Secure Shell server
 405 #
 406 # The OpenSSH server provides secure shell access to the system.
 407
 408 description     "OpenSSH server"
 409
 410 start on filesystem
 411 stop on runlevel [!2345]
 412
 413 expect fork
 414 respawn
 415 respawn limit 10 5
 416 umask 022
 417 # replaces SSHD_OOM_ADJUST in /etc/default/ssh
 418 oom never
 419
 420 pre-start script
 421     test -x /usr/sbin/sshd || { stop; exit 0; }
 422     test -e /etc/ssh/sshd_not_to_be_run && { stop; exit 0; }
 423     test -c /dev/null || { stop; exit 0; }
 424
 425     mkdir -p -m0755 /var/run/sshd
 426 end script
 427
 428 # if you used to set SSHD_OPTS in /etc/default/ssh, you can change the
 429 # 'exec' line here instead
 430 exec /usr/sbin/sshd
 431 EOF
 432
 433     cat <<EOF > $rootfs/etc/init/console.conf
 434 # console - getty
 435 #
 436 # This service maintains a console on tty1 from the point the system is
 437 # started until it is shut down again.
 438
 439 start on stopped rc RUNLEVEL=[2345]
 440 stop on runlevel [!2345]
 441
 442 respawn
 443 exec /sbin/getty -8 38400 /dev/console
 444 EOF
 445
 446     cat <<EOF > $rootfs/lib/init/fstab
 447 # /lib/init/fstab: cleared out for bare-bones lxc
 448 EOF
 449
 450     # reconfigure some services
 451     if [ -z "$LANG" ]; then
 452         chroot $rootfs locale-gen en_US.UTF-8
 453         chroot $rootfs update-locale LANG=en_US.UTF-8
 454     else
 455         chroot $rootfs locale-gen $LANG
 456         chroot $rootfs update-locale LANG=$LANG
 457     fi
 458
 459     # remove pointless services in a container
 460     chroot $rootfs /usr/sbin/update-rc.d -f ondemand remove
 461
 462     chroot $rootfs /bin/bash -c 'cd /etc/init; for f in $(ls u*.conf); do mv $f $f.orig; done'
 463     chroot $rootfs /bin/bash -c 'cd /etc/init; for f in $(ls tty[2-9].conf); do mv $f $f.orig; done'
 464     chroot $rootfs /bin/bash -c 'cd /etc/init; for f in $(ls plymouth*.conf); do mv $f $f.orig; done'
 465     chroot $rootfs /bin/bash -c 'cd /etc/init; for f in $(ls hwclock*.conf); do mv $f $f.orig; done'
 466     chroot $rootfs /bin/bash -c 'cd /etc/init; for f in $(ls module*.conf); do mv $f $f.orig; done'
 467
 468     # if this isn't lucid, then we need to twiddle the network upstart bits :(
 469     if [ $release != "lucid" ]; then
 470         sed -i 's/^.*emission handled.*$/echo Emitting lo/' $rootfs/etc/network/if-up.d/upstart
 471     fi
 472 }
 473
 474 post_process()
 475 {
 476     rootfs=$1
 477     release=$2
 478     trim_container=$3
 479
 480     if [ $trim_container -eq 1 ]; then
 481         trim $rootfs $release
 482     elif [ $release = "lucid" -o $release = "maverick" -o $release = "natty" \
 483                -o $release = "oneiric" ]; then
 484         # for lucid and maverick, if not trimming, then add the ubuntu-virt
 485         # ppa and install lxcguest
 486         if [ $release = "lucid" -o $release = "maverick" ]; then
 487             chroot $rootfs apt-get install --force-yes -y python-software-properties
 488             chroot $rootfs add-apt-repository ppa:ubuntu-virt/ppa
 489         fi
 490         cresolvonf="${rootfs}/etc/resolv.conf"
 491         mv $cresolvonf ${cresolvonf}.lxcbak
 492         cat /etc/resolv.conf > ${cresolvonf}
 493         chroot $rootfs apt-get update
 494         chroot $rootfs apt-get install --force-yes -y lxcguest
 495         rm -f ${cresolvonf}
 496         mv ${cresolvonf}.lxcbak ${cresolvonf}
 497     fi
 498
 499     # If the container isn't running a native architecture, setup multiarch
 500     if [ -x "$(ls -1 ${rootfs}/usr/bin/qemu-*-static 2>/dev/null)" ]; then
 501         mkdir -p ${rootfs}/etc/dpkg/dpkg.cfg.d
 502         echo "foreign-architecture ${hostarch}" > ${rootfs}/etc/dpkg/dpkg.cfg.d/lxc-multiarch
 503
 504         # Save existing value of MIRROR and SECURITY_MIRROR
 505         DEFAULT_MIRROR=$MIRROR
 506         DEFAULT_SECURITY_MIRROR=$SECURITY_MIRROR
 507
 508         # Write a new sources.list containing both native and multiarch entries
 509         > ${rootfs}/etc/apt/sources.list
 510         write_sourceslist $rootfs $arch "native"
 511
 512         MIRROR=$DEFAULT_MIRROR
 513         SECURITY_MIRROR=$DEFAULT_SECURITY_MIRROR
 514         write_sourceslist $rootfs $hostarch "multiarch"
 515
 516         # Finally update the lists and install upstart using the host architecture
 517         chroot $rootfs apt-get update
 518         chroot $rootfs apt-get install --force-yes -y --no-install-recommends upstart:${hostarch} mountall:amd64 iproute:amd64 isc-dhcp-client:amd64
 519     fi
 520
 521     # rmdir /dev/shm in precise and quantal containers.
 522     # I'm afraid of doing rm -rf $rootfs/dev/shm, in case it did
 523     # get bind mounted to the host's /run/shm.  So try to rmdir
 524     # it, and in case that fails move it out of the way.
 525     if [ $release = "precise" ] || [ $release = "quantal" ]; then
 526         [ -d "$rootfs/dev/shm" ] && rmdir $rootfs/dev/shm
 527         [ -e "$rootfs/dev/shm" ] && mv $rootfs/dev/shm $rootfs/dev/shm.bak
 528         ln -s /run/shm $rootfs/dev/shm
 529     fi
 530 }
 531
 532 do_bindhome()
 533 {
 534     rootfs=$1
 535     user=$2
 536
 537     # copy /etc/passwd, /etc/shadow, and /etc/group entries into container
 538     pwd=`getent passwd $user` || { echo "Failed to copy password entry for $user"; false; }
 539     echo $pwd >> $rootfs/etc/passwd
 540
 541     # make sure user's shell exists in the container
 542     shell=`echo $pwd | cut -d: -f 7`
 543     if [ ! -x $rootfs/$shell ]; then
 544         echo "shell $shell for user $user was not found in the container."
 545         pkg=`dpkg -S $(readlink -m $shell) | cut -d ':' -f1`
 546         echo "Installing $pkg"
 547         chroot $rootfs apt-get --force-yes -y install $pkg
 548     fi
 549
 550     shad=`getent shadow $user`
 551     echo "$shad" >> $rootfs/etc/shadow
 552
 553     # bind-mount the user's path into the container's /home
 554     h=`getent passwd $user | cut -d: -f 6`
 555     mkdir -p $rootfs/$h
 556         # use relative path in container
 557         h2=${h#/}
 558         while [ ${h2:0:1} = "/" ]; do
 559                 h2=${h2#/}
 560         done
 561     echo "$h $h2 none bind 0 0" >> $path/fstab
 562
 563     # Make sure the group exists in container
 564     grp=`echo $pwd | cut -d: -f 4`  # group number for $user
 565     grpe=`getent group $grp` || return 0  # if host doesn't define grp, ignore in container
 566     chroot $rootfs getent group "$grpe" || echo "$grpe" >> $rootfs/etc/group
 567 }
 568
 569 usage()
 570 {
 571     cat <<EOF
 572 $1 -h|--help [-a|--arch] [-b|--bindhome <user>] [--trim] [-d|--debug]
 573    [-F | --flush-cache] [-r|--release <release>] [ -S | --auth-key <keyfile>]
 574 release: lucid | maverick | natty | oneiric | precise | quantal
 575 trim: make a minimal (faster, but not upgrade-safe) container
 576 bindhome: bind <user>'s home into the container
 577           The ubuntu user will not be created, and <user> will have
 578           sudo access.
 579 arch: amd64 or i386: defaults to host arch
 580 auth-key: SSH Public key file to inject into container
 581 EOF
 582     return 0
 583 }
 584
 585 options=$(getopt -o a:b:hp:r:xn:FS:d -l arch:,bindhome:,help,path:,release:,trim,name:,flush-cache,auth-key:,debug -- "$@")
 586 if [ $? -ne 0 ]; then
 587     usage $(basename $0)
 588     exit 1
 589 fi
 590 eval set -- "$options"
 591
 592 release=lucid
 593 if [ -f /etc/lsb-release ]; then
 594     . /etc/lsb-release
 595     case "$DISTRIB_CODENAME" in
 596         lucid|maverick|natty|oneiric|precise|quantal)
 597             release=$DISTRIB_CODENAME
 598         ;;
 599     esac
 600 fi
 601
 602 bindhome=
 603 arch=$(arch)
 604
 605 # Code taken from debootstrap
 606 if [ -x /usr/bin/dpkg ] && /usr/bin/dpkg --print-architecture >/dev/null 2>&1; then
 607     arch=`/usr/bin/dpkg --print-architecture`
 608 elif type udpkg >/dev/null 2>&1 && udpkg --print-architecture >/dev/null 2>&1; then
 609     arch=`/usr/bin/udpkg --print-architecture`
 610 else
 611     arch=$(arch)
 612     if [ "$arch" = "i686" ]; then
 613         arch="i386"
 614     elif [ "$arch" = "x86_64" ]; then
 615         arch="amd64"
 616     elif [ "$arch" = "armv7l" ]; then
 617         arch="armel"
 618     fi
 619 fi
 620
 621 debug=0
 622 trim_container=0
 623 hostarch=$arch
 624 flushcache=0
 625 while true
 626 do
 627     case "$1" in
 628     -h|--help)      usage $0 && exit 0;;
 629     -p|--path)      path=$2; shift 2;;
 630     -n|--name)      name=$2; shift 2;;
 631     -F|--flush-cache) flushcache=1; shift 1;;
 632     -r|--release)   release=$2; shift 2;;
 633     -b|--bindhome)  bindhome=$2; shift 2;;
 634     -a|--arch)      arch=$2; shift 2;;
 635     -x|--trim)      trim_container=1; shift 1;;
 636     -S|--auth-key)  auth_key=$2; shift 2;;
 637     -d|--debug)     debug=1; shift 1;;
 638     --)             shift 1; break ;;
 639         *)              break ;;
 640     esac
 641 done
 642
 643 if [ $debug -eq 1 ]; then
 644     set -x
 645 fi
 646
 647 if [ -n "$bindhome" ]; then
 648     pwd=`getent passwd $bindhome`
 649     if [ $? -ne 0 ]; then
 650         echo "Error: no password entry found for $bindhome"
 651         exit 1
 652     fi
 653 fi
 654
 655
 656 if [ "$arch" == "i686" ]; then
 657     arch=i386
 658 fi
 659
 660 if [ $hostarch = "i386" -a $arch = "amd64" ]; then
 661     echo "can't create amd64 container on i386"
 662     exit 1
 663 fi
 664
 665 type debootstrap
 666 if [ $? -ne 0 ]; then
 667     echo "'debootstrap' command is missing"
 668     exit 1
 669 fi
 670
 671 if [ -z "$path" ]; then
 672     echo "'path' parameter is required"
 673     exit 1
 674 fi
 675
 676 if [ "$(id -u)" != "0" ]; then
 677     echo "This script should be run as 'root'"
 678     exit 1
 679 fi
 680
 681 rootfs=$path/rootfs
 682
 683 install_ubuntu $rootfs $release $flushcache
 684 if [ $? -ne 0 ]; then
 685     echo "failed to install ubuntu $release"
 686     exit 1
 687 fi
 688
 689 configure_ubuntu $rootfs $name $release
 690 if [ $? -ne 0 ]; then
 691     echo "failed to configure ubuntu $release for a container"
 692     exit 1
 693 fi
 694
 695 copy_configuration $path $rootfs $name $arch $release
 696 if [ $? -ne 0 ]; then
 697     echo "failed write configuration file"
 698     exit 1
 699 fi
 700
 701 post_process $rootfs $release $trim_container
 702
 703 if [ -n "$bindhome" ]; then
 704     do_bindhome $rootfs $bindhome
 705     finalize_user $bindhome
 706 else
 707     finalize_user ubuntu
 708 fi
 709
 710 echo ""
 711 echo "##"
 712 echo "# The default user is 'ubuntu' with password 'ubuntu'!"
 713 echo "# Use the 'sudo' command to run tasks as root in the container."
 714 echo "##"
 715 echo ""