templates/lxc-oracle.in

   1 #!/bin/sh
   2 #
   3 # Template script for generating Oracle Enterprise Linux container for LXC
   4 # based on lxc-fedora, lxc-ubuntu
   5 #
   6 # Copyright © 2011 Wim Coekaerts <wim.coekaerts@oracle.com>
   7 # Copyright © 2012 Dwight Engen <dwight.engen@oracle.com>
   8 #
   9 # Modified for Oracle Linux 5
  10 # Wim Coekaerts <wim.coekaerts@oracle.com>
  11 #
  12 # Modified for Oracle Linux 6,7 combined OL4,5,6 into one template script
  13 # Dwight Engen <dwight.engen@oracle.com>
  14 #
  15 # This library is free software; you can redistribute it and/or
  16 # modify it under the terms of the GNU Lesser General Public
  17 # License as published by the Free Software Foundation; either
  18 # version 2.1 of the License, or (at your option) any later version.
  19 #
  20 # This library is distributed in the hope that it will be useful,
  21 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  22 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  23 # Lesser General Public License for more details.
  24 #
  25 # You should have received a copy of the GNU Lesser General Public
  26 # License along with this library; if not, write to the Free Software
  27 # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  28 #
  29
  30 # Detect use under userns (unsupported)
  31 for arg in "$@"; do
  32     [ "$arg" = "--" ] && break
  33     if [ "$arg" = "--mapped-uid" -o "$arg" = "--mapped-gid" ]; then
  34         echo "This template can't be used for unprivileged containers." 1>&2
  35         echo "You may want to try the \"download\" template instead." 1>&2
  36         exit 1
  37     fi
  38 done
  39
  40 # Make sure the usual locations are in PATH
  41 export PATH=$PATH:/usr/sbin:/usr/bin:/sbin:/bin
  42
  43 # use virbr0 that is setup by default by libvirtd
  44 lxc_network_type=veth
  45 lxc_network_link=virbr0
  46
  47 die()
  48 {
  49     echo "failed: $1"
  50     exit 1
  51 }
  52
  53 is_btrfs_subvolume()
  54 {
  55     if which btrfs >/dev/null 2>&1 && \
  56        btrfs subvolume list "$1" >/dev/null 2>&1; then
  57         return 0
  58     fi
  59     return 1
  60 }
  61
  62 can_chcon()
  63 {
  64     if which chcon >/dev/null 2>&1; then
  65         selinuxenabled >/dev/null 2>&1
  66         return $?
  67     fi
  68     return 1
  69 }
  70
  71 # fix up the container_rootfs
  72 container_rootfs_patch()
  73 {
  74     echo "Patching container rootfs $container_rootfs for Oracle Linux $container_release_major.$container_release_minor"
  75
  76     # copy ourself into the container to be used to --patch the rootfs when
  77     # yum update on certain packages is done. we do this here instead of in
  78     # container_rootfs_configure() in case the patching done in this function
  79     # is updated in the future, we can inject the updated version of ourself
  80     # into older containers.
  81     if [ $container_rootfs != "/" ]; then
  82         cp -f `readlink -f $0` $container_rootfs/usr/bin/lxc-patch
  83         if [ $container_release_major -lt "6" ]; then
  84             mkdir -p $container_rootfs/usr/lib/yum-plugins
  85             cp @DATADIR@/lxc/lxc-patch.py $container_rootfs/usr/lib/yum-plugins
  86         fi
  87         if [ $container_release_major -ge "6" ]; then
  88             mkdir -p $container_rootfs/usr/share/yum-plugins
  89             cp @DATADIR@/lxc/lxc-patch.py $container_rootfs/usr/share/yum-plugins
  90         fi
  91         mkdir -p $container_rootfs/etc/yum/pluginconf.d
  92         cat <<EOF > $container_rootfs/etc/yum/pluginconf.d/lxc-patch.conf
  93 [main]
  94 enabled=1
  95 packages=dbus,initscripts,iptables,openssh-server,setup,selinux-policy,readahead,udev,util-linux,util-linux-ng
  96 EOF
  97     fi
  98
  99     if [ $container_release_major = "4" ]; then
 100         # yum plugin type of TYPE_INTERFACE works in all releases but gives a
 101         # deprecation warning on major > 4, so we default to TYPE_INTERACTIVE
 102         # and fix it up here
 103         sed -i 's|TYPE_INTERACTIVE|TYPE_INTERFACE|' $container_rootfs/usr/lib/yum-plugins/lxc-patch.py
 104         if [ -f $container_rootfs/etc/yum.repos.d/ULN-Base.repo ]; then
 105             mv $container_rootfs/etc/yum.repos.d/ULN-Base.repo \
 106                $container_rootfs/etc/yum.repos.d/ULN-Base.repo.lxc-disabled
 107         fi
 108         echo "plugins = 1" >>$container_rootfs/etc/yum.conf
 109     fi
 110
 111     # "disable" selinux in the guest. The policy in the container isn't
 112     # likely to match the hosts (unless host == guest exactly) and the
 113     # kernel can only be enforcing one policy.
 114     #
 115     # The OL 5 init honors /etc/selinux/config, but note that
 116     # this doesnt actually disable it if it's enabled in the host, since
 117     # libselinux::is_selinux_enabled() in the guest will check
 118     # /proc/filesystems and see selinuxfs, thus reporting that it is on
 119     # (ie. check the output of sestatus in the guest). We also replace
 120     # /usr/sbin/selinuxenabled with a symlink to /bin/false so that init
 121     # scripts (ie. mcstransd) that call that think selinux is disabled.
 122     mkdir -p $container_rootfs/selinux
 123     echo 0 > $container_rootfs/selinux/enforce
 124     if [ -e $container_rootfs/etc/selinux/config ]; then
 125         sed -i 's|SELINUX=enforcing|SELINUX=disabled|' $container_rootfs/etc/selinux/config
 126     else
 127         mkdir -p $container_rootfs/etc/selinux
 128         echo "SELINUX=disabled" >$container_rootfs/etc/selinux/config
 129     fi
 130     sed -i 's|session[ \t]*required[ \t]*pam_selinux.so[ \t]*close|#session required pam_selinux.so close|' $container_rootfs/etc/pam.d/login
 131     sed -i 's|session[ \t]*required[ \t]*pam_selinux.so[ \t]*open|#session required pam_selinux.so open|' $container_rootfs/etc/pam.d/login
 132
 133     # setting /proc/$$/loginuid doesn't work under user namespace, which
 134     # prevents logins from working
 135     sed -i 's|session[ \t]*required[ \t]*pam_loginuid.so|#session required pam_loginuid.so|' $container_rootfs/etc/pam.d/sshd
 136     sed -i 's|session[ \t]*required[ \t]*pam_loginuid.so|#session required pam_loginuid.so|' $container_rootfs/etc/pam.d/login
 137
 138     if [ -f $container_rootfs/usr/sbin/selinuxenabled ]; then
 139         mv $container_rootfs/usr/sbin/selinuxenabled $container_rootfs/usr/sbin/selinuxenabled.lxcorig
 140         ln -s /bin/false $container_rootfs/usr/sbin/selinuxenabled
 141     fi
 142
 143     # ensure /dev/ptmx refers to the newinstance devpts of the container, or
 144     # pty's will get crossed up with the hosts (https://lkml.org/lkml/2012/1/23/512)
 145     rm -f $container_rootfs/dev/ptmx
 146     ln -s pts/ptmx $container_rootfs/dev/ptmx
 147
 148     # OL7 has systemd, no rc.sysinit
 149     if [ $container_release_major = "7" ]; then
 150         # from mhw in the fedora template: We do need to disable the
 151         # "ConditionalPathExists=/dev/tty0" line or no gettys are started on
 152         # the ttys in the container. Lets do it in an override copy of the
 153         # service so it can still pass rpm verifies and not be automatically
 154         # updated by a new systemd version.
 155         sed -e 's/^ConditionPathExists=/#LXC ConditionPathExists=/' \
 156             < $container_rootfs/usr/lib/systemd/system/getty\@.service \
 157             > $container_rootfs/etc/systemd/system/getty\@.service
 158         # Setup getty service on the 4 ttys we are going to allow in the
 159         # default config.  Number should match lxc.tty
 160         ( cd $container_rootfs/etc/systemd/system/getty.target.wants
 161             for i in 1 2 3 4 ; do ln -sf ../getty\@.service getty@tty${i}.service; done )
 162         # We only want to spawn a getty on /dev/console in lxc, libvirt-lxc
 163         # symlinks /dev/console to /dev/tty1
 164         sed -i '/Before=getty.target/a ConditionVirtualization=lxc' $container_rootfs/usr/lib/systemd/system/console-getty.service
 165
 166         # disable some systemd services, set default boot, sigpwr target
 167         rm -f $container_rootfs/usr/lib/systemd/system/sysinit.target.wants/kmod-static-nodes.service
 168         chroot $container_rootfs systemctl -q disable graphical.target
 169         chroot $container_rootfs systemctl -q enable multi-user.target
 170         if [ ! -e $container_rootfs/etc/systemd/system/sigpwr.target ]; then
 171             chroot $container_rootfs ln -s /usr/lib/systemd/system/halt.target /etc/systemd/system/sigpwr.target
 172         fi
 173
 174         # systemd in userns won't be able to set /proc/self/oom_score_adj which
 175         # prevents the dbus service from starting
 176         sed -i 's|^OOMScoreAdjust|#LXC OOMScoreAdjust|' $container_rootfs/usr/lib/systemd/system/dbus.service
 177         return
 178     fi
 179
 180     # silence error in checking for selinux
 181     sed -i 's|cat /proc/self/attr/current|cat /proc/self/attr/current 2>/dev/null|' $container_rootfs/etc/rc.sysinit
 182     sed -i 's|cat /proc/self/attr/current|cat /proc/self/attr/current 2>/dev/null|' $container_rootfs/etc/rc.d/rc.sysinit
 183
 184     # on ol4 pam_limits prevents logins when using user namespaces
 185     if [ $container_release_major = "4" ]; then
 186         sed -i 's|session[ \t]*required[ \t]*/lib/security/\$ISA/pam_limits.so|#session required /lib/security/$ISA/pam_limits.so|' $container_rootfs/etc/pam.d/system-auth
 187     fi
 188
 189     # avoid error in ol5 attempting to copy non-existent resolv.conf
 190     if [ $container_release_major = "5" ]; then
 191         sed -i 's|resolv.conf.predhclient|resolv.conf.predhclient 2>/dev/null|' $container_rootfs/sbin/dhclient-script
 192     fi
 193
 194     # disable interactive ovmd asking questions
 195     if [ -f $container_rootfs/etc/sysconfig/ovmd ]; then
 196         sed -i 's|INITIAL_CONFIG=yes|INITIAL_CONFIG=no|' $container_rootfs/etc/sysconfig/ovmd
 197     fi
 198
 199     # disable disabling of ipv4 forwarding and defrag on shutdown since
 200     # we mount /proc/sys ro
 201     if [ $container_release_major = "5" ]; then
 202         sed -i 's|-f /proc/sys/net/ipv4/ip_forward|-w /proc/sys/net/ipv4/ip_forward|' $container_rootfs/etc/rc.d/init.d/network
 203         sed -i 's|-f /proc/sys/net/ipv4/ip_always_defrag|-w /proc/sys/net/ipv4/ip_always_defrag|' $container_rootfs/etc/rc.d/init.d/network
 204     fi
 205
 206     # disable ipv6 on ol6
 207     rm -f $container_rootfs/etc/sysconfig/network-scripts/init.ipv6-global
 208
 209     # remove module stuff for iptables it just shows errors that are not
 210     # relevant in a container
 211     if [ -f "$container_rootfs/etc/sysconfig/iptables-config" ]; then
 212         sed -i 's|IPTABLES_MODULES=".*|IPTABLES_MODULES=""|' $container_rootfs/etc/sysconfig/iptables-config
 213         sed -i 's|IPTABLES_MODULES_UNLOAD=".*|IPTABLES_MODULES_UNLOAD="no"|' $container_rootfs/etc/sysconfig/iptables-config
 214     fi
 215
 216     # disable readahead in the container
 217     if [ $container_release_major = "6" -a -e $container_rootfs/etc/sysconfig/readahead ]; then
 218         rm -f $container_rootfs/etc/init/readahead-collector.conf
 219         rm -f $container_rootfs/etc/init/readahead-disable-services.conf
 220         sed -i 's|READAHEAD="yes"|READAHEAD="no"|' $container_rootfs/etc/sysconfig/readahead
 221     fi
 222
 223     if [ $container_release_major = "4" ]; then
 224         # enable fastboot always
 225         sed -i 's|\[ -f /fastboot \]|/bin/true|' $container_rootfs/etc/rc.sysinit
 226         sed -i 's|\[ -f /fastboot \]|/bin/true|' $container_rootfs/etc/rc.d/rc.sysinit
 227
 228         # dont attempt to set kernel parameters
 229         sed -i 's|action $"Configuring kernel parameters|# LXC action $"Configuring kernel parameters|' $container_rootfs/etc/rc.sysinit
 230         sed -i 's|action $"Configuring kernel parameters|# LXC action $"Configuring kernel parameters|' $container_rootfs/etc/rc.d/rc.sysinit
 231         sed -i 's|action $"Setting network parameters|# LXC action $"Setting network parameters|' $container_rootfs/etc/init.d/network 2>/dev/null
 232         sed -i 's|action $"Setting network parameters|# LXC action $"Setting network parameters|' $container_rootfs/etc/init.d/NetworkManager 2>/dev/null
 233     fi
 234
 235     # no need to attempt to mount /
 236     sed -i 's|mount -f /$|# LXC mount -f /|' $container_rootfs/etc/rc.sysinit
 237     sed -i 's|mount -f /$|# LXC mount -f /|' $container_rootfs/etc/rc.d/rc.sysinit
 238     sed -i 's|action \$"Remounting root filesystem|/bin/true # LXC action $"Remounting root filesystem|' $container_rootfs/etc/rc.sysinit
 239     sed -i 's|action \$"Remounting root filesystem|/bin/true # LXC action $"Remounting root filesystem|' $container_rootfs/etc/rc.d/rc.sysinit
 240
 241     # disable udev in the container
 242     if [ $container_release_major = "4" ]; then
 243         sed -i 's|\[ -x /sbin/start_udev \]|# LXC no udev|' $container_rootfs/etc/rc.sysinit
 244         sed -i 's|\[ -x /sbin/start_udev \]|# LXC no udev|' $container_rootfs/etc/rc.d/rc.sysinit
 245     else
 246         sed -i 's|.sbin.start_udev||' $container_rootfs/etc/rc.sysinit
 247         sed -i 's|.sbin.start_udev||' $container_rootfs/etc/rc.d/rc.sysinit
 248     fi
 249
 250     # disable nash raidautorun in the container since no /dev/md*
 251     if [ $container_release_major = "4" -o $container_release_major = "5" ]; then
 252         sed -i 's|echo "raidautorun /dev/md0"|echo ""|' $container_rootfs/etc/rc.sysinit
 253         sed -i 's|echo "raidautorun /dev/md0"|echo ""|' $container_rootfs/etc/rc.d/rc.sysinit
 254     fi
 255
 256     # prevent rc.sysinit from attempting to loadkeys
 257     if [ \( $container_release_major = "4" -o $container_release_major = "5" \) -a -e $container_rootfs/etc/sysconfig/keyboard ]; then
 258         rm $container_rootfs/etc/sysconfig/keyboard
 259     fi
 260
 261     # dont use the hwclock, it messes up the host's time
 262     if [ $container_release_major = "4" ]; then
 263         sed -i 's|runcmd $"Syncing hardware clock|# LXC no hwclock runcmd $"Syncing hardware clock|' $container_rootfs/etc/rc.d/init.d/halt
 264     else
 265         sed -i 's|\[ -x /sbin/hwclock|\[ 0 -eq 1|' $container_rootfs/etc/rc.d/init.d/halt
 266     fi
 267     sed -i 's|^\[ -x /sbin/hwclock|\[ 0 -eq 1|' $container_rootfs/etc/rc.sysinit
 268     sed -i 's|^\[ -x /sbin/hwclock|\[ 0 -eq 1|' $container_rootfs/etc/rc.d/rc.sysinit
 269     sed -i 's|^/sbin/hwclock|# LXC /sbin/nohwclock|' $container_rootfs/etc/rc.sysinit
 270     sed -i 's|^/sbin/hwclock|# LXC /sbin/nohwclock|' $container_rootfs/etc/rc.d/rc.sysinit
 271
 272     # dont start lvm
 273     if [ $container_release_major -lt "6" -a -f $container_rootfs/sbin/lvm.static ]; then
 274         mv $container_rootfs/sbin/lvm.static $container_rootfs/sbin/lvm.static.lxc-disabled
 275     fi
 276     if [ $container_release_major = "6" ]; then
 277         touch $container_rootfs/.nolvm
 278     fi
 279
 280     # fix assumptions that plymouth is available
 281     sed -i 's|\[ "$PROMPT" != no \] && plymouth|[ "$PROMPT" != no ] \&\& [ -n "$PLYMOUTH" ] \&\& plymouth|' $container_rootfs/etc/rc.sysinit
 282     sed -i 's|\[ "$PROMPT" != no \] && plymouth|[ "$PROMPT" != no ] \&\& [ -n "$PLYMOUTH" ] \&\& plymouth|' $container_rootfs/etc/rc.d/rc.sysinit
 283     rm -f $container_rootfs/etc/init/plymouth-shutdown.conf
 284     rm -f $container_rootfs/etc/init/quit-plymouth.conf
 285     rm -f $container_rootfs/etc/init/splash-manager.conf
 286
 287     # dont try to unmount /dev/lxc devices
 288     sed -i 's|&& $1 !~ /^\\/dev\\/ram/|\&\& $2 !~ /^\\/dev\\/lxc/ \&\& $1 !~ /^\\/dev\\/ram/|' $container_rootfs/etc/init.d/halt
 289
 290     # don't try to unmount swap
 291     sed -i 's|\[ -f /proc/swaps \]|# LXC [ -f /proc/swaps ]|' $container_rootfs/etc/init.d/halt
 292
 293     # sem_open(3) checks that /dev/shm is SHMFS_SUPER_MAGIC, so make sure to
 294     # mount /dev/shm (normally done by dracut initrd) as tmpfs
 295     if [ $container_release_major = "4" -o $container_release_major = "5" ]; then
 296         grep -q "mount -t tmpfs tmpfs /dev/shm" $container_rootfs/etc/rc.sysinit
 297         if [ $? -eq 1 ]; then
 298             echo "mount -t tmpfs tmpfs /dev/shm" >>$container_rootfs/etc/rc.sysinit
 299             echo "mount -t tmpfs tmpfs /dev/shm" >>$container_rootfs/etc/rc.d/rc.sysinit
 300         fi
 301     fi
 302     if [ $container_release_major = "6" ]; then
 303         sed -i 's|mount -n -o remount /dev/shm >/dev/null 2>&1$|mount -t tmpfs tmpfs /dev/shm # LXC|' $container_rootfs/etc/rc.sysinit
 304         sed -i 's|mount -n -o remount /dev/shm >/dev/null 2>&1$|mount -t tmpfs tmpfs /dev/shm # LXC|' $container_rootfs/etc/rc.d/rc.sysinit
 305     fi
 306
 307     # there might be other services that are useless but the below set is a good start
 308     # some of these might not exist in the image, so we silence chkconfig complaining
 309     # about the service file not being found
 310     for service in \
 311         acpid apmd auditd autofs cpuspeed dund gpm haldaemon hidd       \
 312         ip6tables irqbalance iscsi iscsid isdn kdump kudzu              \
 313         lm_sensors lvm2-monitor mdmonitor microcode_ctl                 \
 314         ntpd pcmcia postfix sendmail udev-post xfs ;
 315     do
 316         chroot $container_rootfs chkconfig 2>/dev/null $service off
 317     done
 318
 319     for service in rsyslog ;
 320     do
 321         chroot $container_rootfs chkconfig 2>/dev/null $service on
 322     done
 323 }
 324
 325 container_rootfs_configure()
 326 {
 327     container_rootfs_patch
 328     echo "Configuring container for Oracle Linux $container_release_major.$container_release_minor"
 329
 330     # configure the network to use dhcp. we set DHCP_HOSTNAME so the guest
 331     # will report its name and be resolv'able by the hosts dnsmasq
 332     cat <<EOF > $container_rootfs/etc/sysconfig/network-scripts/ifcfg-eth0
 333 DEVICE=eth0
 334 BOOTPROTO=dhcp
 335 ONBOOT=yes
 336 HOSTNAME=$name
 337 DHCP_HOSTNAME=$name
 338 NM_CONTROLLED=no
 339 TYPE=Ethernet
 340 EOF
 341
 342     # set the hostname
 343     cat <<EOF > $container_rootfs/etc/sysconfig/network
 344 NETWORKING=yes
 345 NETWORKING_IPV6=no
 346 HOSTNAME=$name
 347 EOF
 348
 349     # set minimal hosts
 350     echo "127.0.0.1 localhost $name" > $container_rootfs/etc/hosts
 351
 352     # this file has to exist for libvirt/Virtual machine monitor to boot the container
 353     touch $container_rootfs/etc/mtab
 354
 355     # setup console and tty[1-4] for login. note that /dev/console and
 356     # /dev/tty[1-4] will be symlinks to the ptys /dev/lxc/console and
 357     # /dev/lxc/tty[1-4] so that package updates can overwrite the symlinks.
 358     # lxc will maintain these links and bind mount ptys over /dev/lxc/*
 359     # since lxc.devttydir is specified in the config.
 360
 361     # allow root login on console, tty[1-4], and pts/0 for libvirt
 362     echo "# LXC (Linux Containers)" >>$container_rootfs/etc/securetty
 363     echo "lxc/console"  >>$container_rootfs/etc/securetty
 364     for i in 1 2 3 4; do
 365         echo "lxc/tty$i"        >>$container_rootfs/etc/securetty
 366     done
 367     echo "# For libvirt/Virtual Machine Monitor" >>$container_rootfs/etc/securetty
 368     for i in 0 1 2 3 4; do
 369         echo "pts/$i"        >>$container_rootfs/etc/securetty
 370     done
 371
 372     # prevent mingetty from calling vhangup(2) since it fails with userns
 373     if [ -f $container_rootfs/etc/init/tty.conf ]; then
 374         sed -i 's|mingetty|mingetty --nohangup|' $container_rootfs/etc/init/tty.conf
 375     fi
 376
 377     # create maygetty which only spawns a getty on the console when running
 378     # under lxc, not libvirt-lxc which symlinks /dev/console to the same pty
 379     # as /dev/tty1
 380     cat <<EOF >$container_rootfs/sbin/maygetty
 381 #!/bin/sh
 382 if [ "\$container" = "lxc" ]; then
 383     exec /sbin/mingetty \$@
 384 fi
 385 exec sleep infinity
 386 EOF
 387     chmod 755 $container_rootfs/sbin/maygetty
 388
 389     # start a getty on /dev/console, /dev/tty[1-4]
 390     if [ $container_release_major = "4" -o $container_release_major = "5" ]; then
 391         sed -i 's|mingetty|mingetty --nohangup|' $container_rootfs/etc/inittab
 392         sed -i '/1:2345:respawn/i cns:2345:respawn:/sbin/maygetty --nohangup --noclear console' $container_rootfs/etc/inittab
 393         sed -i '/5:2345:respawn/d' $container_rootfs/etc/inittab
 394         sed -i '/6:2345:respawn/d' $container_rootfs/etc/inittab
 395     fi
 396
 397     if [ $container_release_major = "6" ]; then
 398         cat <<EOF > $container_rootfs/etc/init/console.conf
 399 # console - getty
 400 #
 401 # This service maintains a getty on the console from the point the system is
 402 # started until it is shut down again.
 403
 404 start on stopped rc RUNLEVEL=[2345]
 405 stop on runlevel [!2345]
 406
 407 respawn
 408 exec /sbin/maygetty --nohangup --noclear /dev/console
 409 EOF
 410     fi
 411
 412     # lxc-shutdown sends SIGPWR to init, OL4 and OL5 have SysVInit, just
 413     # make it do shutdown now instead of delaying 2 minutes.  OL6 uses
 414     # upstart, so we create an upstart job to handle SIGPWR to shut down
 415     # cleanly.  We use "init 0" instead of shutdown -h now to avoid SELinux
 416     # permission denied when upstart's shutdown tries to connect to the
 417     # /com/ubuntu/upstart socket.
 418     if [ $container_release_major = "4" -o $container_release_major = "5" ]; then
 419         sed -i 's|pf::powerfail:/sbin/shutdown -f -h +2 "Power Failure; |pf::powerfail:/sbin/shutdown -f -h now "|' $container_rootfs/etc/inittab
 420     elif [ $container_release_major = "6" ]; then
 421         cat <<EOF > $container_rootfs/etc/init/power-status-changed.conf
 422 # power-status-changed - used to cleanly shut down the container
 423 #
 424 # This task is run whenever init receives SIGPWR
 425 # Used to shut down the machine.
 426
 427 start on power-status-changed
 428
 429 exec init 0
 430 EOF
 431     fi
 432
 433     # start with a clean /var/log/messages
 434     rm -f $container_rootfs/var/log/messages
 435
 436     # add oracle user, set root password
 437     chroot $container_rootfs useradd -m -s /bin/bash oracle
 438     echo "oracle:oracle" | chroot $container_rootfs chpasswd
 439     echo "root:root" | chroot $container_rootfs chpasswd
 440     printf "Added container user:\033[1moracle\033[0m password:\033[1moracle\033[0m\n"
 441     printf "Added container user:\033[1mroot\033[0m password:\033[1mroot\033[0m\n"
 442 }
 443
 444 # create the container's lxc config file
 445 container_config_create()
 446 {
 447     echo "Create configuration file $cfg_dir/config"
 448     mkdir -p $cfg_dir || die "unable to create config dir $cfg_dir"
 449
 450     echo "# Common configuration" >> $cfg_dir/config
 451     if [ -e "@LXCTEMPLATECONFIG@/oracle.common.conf" ]; then
 452         echo "lxc.include = @LXCTEMPLATECONFIG@/oracle.common.conf" >> $cfg_dir/config
 453     fi
 454
 455     # generate a hwaddr for the container with a high mac address
 456     # see http://sourceforge.net/tracker/?func=detail&aid=3411497&group_id=163076&atid=826303
 457     local hwaddr="fe:`dd if=/dev/urandom bs=8 count=1 2>/dev/null |od -t x8 | \
 458                       head -n 1 |awk '{print $2}' | cut -c1-10 |\
 459                       sed 's/\(..\)/\1:/g; s/.$//'`"
 460     cat <<EOF >> $cfg_dir/config || die "unable to create $cfg_dir/config"
 461 # Container configuration for Oracle Linux $container_release_major.$container_release_minor
 462 lxc.arch = $arch
 463 lxc.utsname = $name
 464 EOF
 465     grep -q "^lxc.rootfs" $cfg_dir/config 2>/dev/null || echo "lxc.rootfs = $container_rootfs" >> $cfg_dir/config
 466
 467     if [ $container_release_major != "4" ]; then
 468         echo "lxc.cap.drop = sys_resource" >>$cfg_dir/config
 469     fi
 470
 471     # systemd services like logind and journald need these
 472     if [ $container_release_major != "7" ]; then
 473         echo "lxc.cap.drop = setfcap setpcap" >>$cfg_dir/config
 474     fi
 475
 476     # don't create kmsg symlink as it causes journald to use 100% cpu
 477     if [ $container_release_major = "7" ]; then
 478         echo "lxc.autodev = 1" >>$cfg_dir/config
 479         echo "lxc.kmsg = 0" >>$cfg_dir/config
 480     fi
 481
 482     echo "# Networking" >>$cfg_dir/config
 483     # see if the network settings were already specified
 484     lxc_network_type=`grep '^lxc.network.type' $cfg_dir/config | awk -F'[= \t]+' '{ print $2 }'`
 485     if [ -z "$lxc_network_type" -a                      \
 486         \( $host_distribution = "OracleServer" -o       \
 487            $host_distribution = "Fedora" \) ]; then
 488             echo "lxc.network.type = veth" >>$cfg_dir/config
 489             echo "lxc.network.flags = up" >>$cfg_dir/config
 490             echo "lxc.network.link = virbr0" >>$cfg_dir/config
 491     fi
 492
 493     cat <<EOF >> $cfg_dir/config || die "unable to create $cfg_dir/config"
 494 lxc.network.name = eth0
 495 lxc.network.mtu = 1500
 496 lxc.network.hwaddr = $hwaddr
 497 EOF
 498 }
 499
 500 container_rootfs_clone()
 501 {
 502     if is_btrfs_subvolume $template_rootfs; then
 503         # lxc-create already made $container_rootfs a btrfs subvolume, but
 504         # in this case we want to snapshot the original subvolume so we we
 505         # have to delete the one that lxc-create made
 506         btrfs subvolume delete $container_rootfs
 507         btrfs subvolume snapshot $template_rootfs $container_rootfs || die "btrfs clone template"
 508     else
 509         echo "Copying rootfs ..."
 510         cp -axT $template_rootfs $container_rootfs || die "copy template"
 511     fi
 512 }
 513
 514 container_rootfs_repo_create()
 515 {
 516     echo "# LXC generated .repo file" >$1
 517     echo "[$2]" >>$1
 518     echo "name=Oracle Linux $container_release_major.$container_release_minor ($basearch)" >>$1
 519     echo "baseurl=$3/" >>$1
 520     echo "enabled=1" >>$1
 521     echo "skip_if_unavailable=1" >>$1
 522
 523     if [ "$4" != "" ]; then
 524         echo "gpgkey=$yum_url/RPM-GPG-KEY-oracle-ol$container_release_major" >>$1
 525         echo "gpgcheck=1" >>$1
 526     else
 527         echo "gpgcheck=0" >>$1
 528     fi
 529 }
 530
 531 container_rootfs_dev_create()
 532 {
 533     # create required devices. note that /dev/console will be created by lxc
 534     # or libvirt itself to be a symlink to the right pty.
 535     # take care to not nuke /dev in case $container_rootfs isn't set
 536     dev_path="$container_rootfs/dev"
 537     if [ $container_rootfs != "/" -a -d $dev_path ]; then
 538         rm -rf $dev_path
 539     fi
 540     mkdir -p $dev_path
 541     if can_chcon; then
 542         # ensure symlinks created in /dev have the right context
 543         chcon -t device_t $dev_path
 544     fi
 545     mknod -m 666  $dev_path/null c 1 3
 546     mknod -m 666  $dev_path/zero c 1 5
 547     mknod -m 666  $dev_path/random c 1 8
 548     mknod -m 666  $dev_path/urandom c 1 9
 549     mkdir -m 755  $dev_path/pts
 550     mkdir -m 1777 $dev_path/shm
 551     mknod -m 666  $dev_path/tty c 5 0
 552     mknod -m 666  $dev_path/tty1 c 4 1
 553     mknod -m 666  $dev_path/tty2 c 4 2
 554     mknod -m 666  $dev_path/tty3 c 4 3
 555     mknod -m 666  $dev_path/tty4 c 4 4
 556     mknod -m 666  $dev_path/full c 1 7
 557     mknod -m 600  $dev_path/initctl p
 558
 559     # set selinux labels same as host
 560     if can_chcon; then
 561         for node in null zero random urandom pts shm \
 562                     tty tty0 tty1 tty2 tty3 tty4 full ;
 563         do
 564             chcon --reference /dev/$node $dev_path/$node 2>/dev/null
 565         done
 566     fi
 567 }
 568
 569 container_rootfs_create()
 570 {
 571     if can_chcon; then
 572         chcon --reference / $container_rootfs 2>/dev/null
 573     fi
 574
 575     cmds="rpm wget yum"
 576     if [ $container_release_major -lt "6" ]; then
 577         if [ $host_distribution = "Ubuntu" -o $host_distribution = "Debian" ]; then
 578             db_dump_cmd="db5.1_dump"
 579         fi
 580         if [ $host_distribution = "OracleServer" -o \
 581              $host_distribution = "Fedora" ]; then
 582             db_dump_cmd="db_dump"
 583         fi
 584
 585         cmds="$cmds $db_dump_cmd file"
 586     fi
 587     for cmd in $cmds; do
 588         which $cmd >/dev/null 2>&1
 589         if [ $? -ne 0 ]; then
 590             die "The $cmd command is required, please install it"
 591         fi
 592     done
 593
 594     mkdir -p @LOCALSTATEDIR@/lock/subsys/lxc
 595     (
 596         flock -x 9
 597         if [ $? -ne 0 ]; then
 598             die "The template is busy."
 599         fi
 600
 601         echo "Yum installing release $container_release_major.$container_release_minor for $basearch"
 602
 603         if [ -n "$repourl" ]; then
 604             yum_url=$repourl
 605         else
 606             yum_url=http://public-yum.oracle.com
 607         fi
 608         if [ $container_release_major = "4" -o $container_release_major = "5" ]; then
 609             latest_L="el"
 610             latest_U="EL"
 611         else
 612             latest_L="ol"
 613             latest_U="OL"
 614         fi
 615
 616         if [ -n "$baseurl" ]; then
 617             # create .repo pointing at baseurl
 618             repo="lxc-install"
 619             mkdir -p $container_rootfs/etc/yum.repos.d
 620             container_rootfs_repo_create \
 621                 $container_rootfs/etc/yum.repos.d/lxc-install.repo $repo $baseurl
 622         else
 623             # get public-yum repo file
 624             if   [ $container_release_major = "4" ]; then
 625                 repofile=public-yum-el4.repo
 626             elif [ $container_release_major = "5" ]; then
 627                 repofile=public-yum-el5.repo
 628             elif [ $container_release_major = "6" ]; then
 629                 repofile=public-yum-ol6.repo
 630             elif [ $container_release_major = "7" ]; then
 631                 repofile=public-yum-ol7.repo
 632             else
 633                 die "Unsupported release $container_release_major"
 634             fi
 635
 636             mkdir -p $container_rootfs/etc/yum.repos.d
 637             wget -q $yum_url/$repofile -O $container_rootfs/etc/yum.repos.d/$repofile
 638             if [ $? -ne 0 ]; then
 639                 die "Unable to download repo file $yum_url/$repofile, release unavailable"
 640             fi
 641
 642             # yum will take $basearch from host, so force the arch we want
 643             sed -i "s|\$basearch|$basearch|" $container_rootfs/etc/yum.repos.d/$repofile
 644
 645             # replace url if they specified one
 646             if [ -n "$repourl" ]; then
 647                 sed -i "s|baseurl=http://public-yum.oracle.com/repo|baseurl=$repourl/repo|" $container_rootfs/etc/yum.repos.d/$repofile
 648                 sed -i "s|gpgkey=http://public-yum.oracle.com|gpgkey=$repourl|" $container_rootfs/etc/yum.repos.d/$repofile
 649             fi
 650
 651             # disable all repos, then enable the repo for the version we are installing.
 652             if [ $container_release_minor = "latest" ]; then
 653                 repo=$latest_L""$container_release_major"_"$container_release_minor
 654             elif [ $container_release_major = "6" -o  $container_release_major = "7" ]; then
 655                 if   [ $container_release_minor = "0" ]; then
 656                     repo="ol"$container_release_major"_ga_base"
 657                 else
 658                     repo="ol"$container_release_major"_u"$container_release_minor"_base"
 659                 fi
 660             elif [ $container_release_major = "5" ]; then
 661                 if   [ $container_release_minor = "0" ]; then
 662                     repo="el"$container_release_major"_ga_base"
 663                 elif [ $container_release_minor -lt "6" ]; then
 664                     repo="el"$container_release_major"_u"$container_release_minor"_base"
 665                 else
 666                     repo="ol"$container_release_major"_u"$container_release_minor"_base"
 667                 fi
 668             elif [ $container_release_major = "4" -a $container_release_minor -gt "5" ]; then
 669                 repo="el"$container_release_major"_u"$container_release_minor"_base"
 670             else
 671                 die "Unsupported release $container_release_major.$container_release_minor"
 672             fi
 673             sed -i "s|enabled=1|enabled=0|" $container_rootfs/etc/yum.repos.d/$repofile
 674             sed -i "/\[$repo\]/,/\[/ s/enabled=0/enabled=1/" $container_rootfs/etc/yum.repos.d/$repofile
 675         fi
 676
 677         container_rootfs_dev_create
 678
 679         # don't put devpts,proc, nor sysfs in here, it will already be mounted for us by lxc/libvirt
 680         echo "" >$container_rootfs/etc/fstab
 681
 682         # create rpm db, download and yum install minimal packages
 683         mkdir -p $container_rootfs/var/lib/rpm
 684         rpm --root $container_rootfs --initdb
 685         yum_args="--installroot $container_rootfs --disablerepo=* --enablerepo=$repo -y --nogpgcheck"
 686         min_pkgs="yum initscripts passwd rsyslog vim-minimal openssh-server openssh-clients dhclient chkconfig rootfiles policycoreutils oraclelinux-release"
 687         if [ $container_release_major -lt "6" ]; then
 688             min_pkgs="$min_pkgs db4-utils"
 689         fi
 690
 691         # we unshare the mount namespace because yum installing the ol4
 692         # packages causes $rootfs/proc to be mounted on
 693         lxc-unshare -s MOUNT yum -- $yum_args install $min_pkgs $user_pkgs
 694         if [ $? -ne 0 ]; then
 695             die "Failed to download and install the rootfs, aborting."
 696         fi
 697
 698         # rsyslog and pam depend on coreutils for some common commands in
 699         # their POSTIN scriptlets, but coreutils wasn't installed yet. now
 700         # that coreutils is installed, reinstall the packages so their POSTIN
 701         # runs right. similarly, libutempter depends on libselinux.so.1 when
 702         # it runs /usr/sbin/groupadd, so reinstall it too
 703         redo_pkgs=""
 704         if [ $container_release_major = "5" ]; then
 705             if   [ $container_release_minor = "latest" ]; then
 706                 redo_pkgs="pam rsyslog libutempter"
 707             elif [ $container_release_minor -lt 2 ]; then
 708                 redo_pkgs="pam"
 709             elif [ $container_release_minor -lt 6 ]; then
 710                 redo_pkgs="pam rsyslog"
 711             elif [ $container_release_minor -gt 5 ]; then
 712                 redo_pkgs="pam rsyslog libutempter"
 713             fi
 714         fi
 715         # shadow utils fails on ol4 and ol6.1
 716         if [ $container_release_major = "4" -o \
 717              $container_release_major = "6" -a $container_release_minor = "1" ]; then
 718             redo_pkgs="shadow-utils"
 719         fi
 720         if [ x"$redo_pkgs" != x ]; then
 721             rpm --root $container_rootfs --nodeps -e $redo_pkgs
 722             lxc-unshare -s MOUNT yum -- $yum_args install $redo_pkgs
 723             if [ $? -ne 0 ]; then
 724                 die "Unable to reinstall packages"
 725             fi
 726         fi
 727
 728         # if installing from a baseurl, create a .repo that the container
 729         # can use to update to _latest from http://public-yum.oracle.com
 730         if [ -n "$baseurl" ]; then
 731             container_rootfs_repo_create \
 732                 "$container_rootfs/etc/yum.repos.d/public-yum-"$latestL""$container_release_major".repo" \
 733                 $latest_L""$container_release_major"_latest" \
 734                 $yum_url"/repo/OracleLinux/"$latest_U""$container_release_major"/latest/$basearch" gpg
 735         fi
 736
 737         # these distributions put the rpm database in a place the guest is
 738         # not expecting it, so move it
 739         if [ $host_distribution = "Ubuntu" -o $host_distribution = "Debian" ]; then
 740             mv $container_rootfs/$HOME/.rpmdb/* $container_rootfs/var/lib/rpm
 741         fi
 742
 743         # if the native rpm created the db with Hash version 9, we need to
 744         # downgrade it to Hash version 8 for use with OL5.x
 745         db_version=`file $container_rootfs/var/lib/rpm/Packages | \
 746                     grep -o 'version [0-9]*' |awk '{print $2}'`
 747         if [ $container_release_major -lt "6" -a $db_version != "8" ]; then
 748             echo "Fixing (downgrading) rpm database from version $db_version"
 749             rm -f $container_rootfs/var/lib/rpm/__db*
 750             for db in $container_rootfs/var/lib/rpm/* ; do
 751                 $db_dump_cmd $db |chroot $container_rootfs db_load /var/lib/rpm/`basename $db`.new
 752                 mv $db.new $db
 753             done
 754         fi
 755
 756         # the host rpm may not be the same as the guest, rebuild the db with
 757         # the guest rpm version
 758         echo "Rebuilding rpm database"
 759         rm -f $container_rootfs/var/lib/rpm/__db*
 760         chroot $container_rootfs rpm --rebuilddb >/dev/null 2>&1
 761
 762     ) 9>@LOCALSTATEDIR@/lock/subsys/lxc-oracle-$name
 763     if [ $? -ne 0 ]; then
 764         exit 1
 765     fi
 766 }
 767
 768 container_release_get()
 769 {
 770     if [ -f $1/etc/oracle-release ]; then
 771         container_release_version=`cat $1/etc/oracle-release |awk '/^Oracle/ {print $5}'`
 772         container_release_major=`echo $container_release_version |awk -F '.' '{print $1}'`
 773         container_release_minor=`echo $container_release_version |awk -F '.' '{print $2}'`
 774     elif grep -q "Enterprise Linux AS" $1/etc/redhat-release; then
 775         container_release_major=`cat $1/etc/redhat-release |awk '{print $7}'`
 776         container_release_minor=`cat $1/etc/redhat-release |awk '{print $10}' |tr -d ")"`
 777         container_release_version="$container_release_major.$container_release_minor"
 778     elif grep -q "Enterprise Linux Server" $1/etc/redhat-release; then
 779         container_release_version=`cat $1/etc/redhat-release |awk '{print $7}'`
 780         container_release_major=`echo $container_release_version |awk -F '.' '{print $1}'`
 781         container_release_minor=`echo $container_release_version |awk -F '.' '{print $2}'`
 782     else
 783         echo "Unable to determine container release version"
 784         exit 1
 785     fi
 786 }
 787
 788 usage()
 789 {
 790     cat <<EOF
 791   -a|--arch=<arch>        architecture (ie. i386, x86_64)
 792   -R|--release=<release>  release to download for the new container
 793   --rootfs=<path>         rootfs path
 794   -r|--rpms=<rpm name>    additional rpms to install into container
 795   -u|--url=<url>          replace yum repo url (ie. Oracle public-yum mirror)
 796      --baseurl=<url>      use package repository (ie. file:///mnt)
 797                           arch and release must also be specified
 798   -t|--templatefs=<path>  copy/clone rootfs at path instead of downloading
 799   -P|--patch=<path>       only patch the rootfs at path for use as a container
 800   -h|--help
 801
 802 Release is of the format "major.minor", for example "5.8", "6.3", or "6.latest"
 803 This template supports Oracle Linux releases 4.6 - 7.0
 804 EOF
 805     return 0
 806 }
 807
 808 options=$(getopt -o hp:n:a:R:r:u:t: -l help,rootfs:,path:,name:,arch:,release:,rpms:,url:,templatefs:,patch:,baseurl: -- "$@")
 809 if [ $? -ne 0 ]; then
 810     usage $(basename $0)
 811     exit 1
 812 fi
 813
 814 eval set -- "$options"
 815 while true
 816 do
 817     case "$1" in
 818         -h|--help)              usage $0 && exit 0;;
 819         -p|--path)              cfg_dir=$2; shift 2;;
 820         --rootfs)               container_rootfs=$2; shift 2;;
 821         -n|--name)              name=$2; shift 2;;
 822         -a|--arch)              arch=$2; shift 2;;
 823         -R|--release)           container_release_version=$2; shift 2;;
 824         -r|--rpms)              user_pkgs=$2; shift 2;;
 825         -u|--url)               repourl=$2; shift 2;;
 826         -t|--templatefs)        template_rootfs=$2; shift 2;;
 827         --patch)                patch_rootfs=$2; shift 2;;
 828         --baseurl)              baseurl=$2; shift 2;;
 829         --)                     shift 1; break ;;
 830         *)                      break ;;
 831     esac
 832 done
 833
 834 # make sure mandatory args are given and valid
 835 if [ "$(id -u)" != "0" ]; then
 836     echo "This script should be run as 'root'"
 837     exit 1
 838 fi
 839
 840 if [ -n "$baseurl" ]; then
 841     if [ "$arch" = "" -o "$container_release_version" = "" ]; then
 842         echo "The --arch and --release must be specified when using --baseurl"
 843         usage
 844         exit 1
 845     fi
 846 fi
 847
 848 if [ "$arch" = "" ]; then
 849     arch=$(uname -m)
 850 fi
 851
 852 if [ -n "$patch_rootfs" ]; then
 853     container_rootfs="$patch_rootfs"
 854     container_release_get $container_rootfs
 855     container_rootfs_patch
 856     exit 0
 857 fi
 858
 859 if [ -z $name ]; then
 860     echo "Container name must be given"
 861     usage
 862     exit 1
 863 fi
 864
 865 if [ -z $cfg_dir ]; then
 866     echo "Configuration directory must be given, check lxc-create"
 867     usage
 868     exit 1
 869 fi
 870
 871 basearch=$arch
 872 if [ "$arch" = "i686" ]; then
 873     basearch="i386"
 874 fi
 875
 876 if [ "$arch" != "i386" -a "$arch" != "x86_64" ]; then
 877     echo "Bad architecture given, check lxc-create"
 878     usage
 879     exit 1
 880 fi
 881
 882 if which lsb_release >/dev/null 2>&1; then
 883     host_distribution=`lsb_release --id |awk '{print $3}'`
 884     host_release_version=`lsb_release --release |awk '{print $2}'`
 885     host_release_major=`echo $host_release_version |awk -F '.' '{print $1}'`
 886     host_release_minor=`echo $host_release_version |awk -F '.' '{print $2}'`
 887 else
 888     if   [ -f /etc/fedora-release ]; then
 889        host_distribution="Fedora"
 890        host_release_version=`cat /etc/fedora-release |awk '{print $3}'`
 891        host_release_major=$host_release_version
 892        host_release_minor=0
 893     elif [ -f /etc/oracle-release ]; then
 894        host_distribution="OracleServer"
 895        host_release_version=`cat /etc/oracle-release |awk '{print $5}'`
 896        host_release_major=`echo $host_release_version |awk -F '.' '{print $1}'`
 897        host_release_minor=`echo $host_release_version |awk -F '.' '{print $2}'`
 898     else
 899        echo "Unable to determine host distribution, ensure lsb_release is installed"
 900        exit 1
 901     fi
 902 fi
 903 echo "Host is $host_distribution $host_release_version"
 904
 905 if [ -z "$container_rootfs" ]; then
 906     container_rootfs="$cfg_dir/rootfs"
 907 fi
 908
 909 if [ -n "$template_rootfs" ]; then
 910     container_release_get $template_rootfs
 911 else
 912     if [ -z "$container_release_version" ]; then
 913         if [ $host_distribution = "OracleServer" ]; then
 914             container_release_version=$host_release_version
 915         else
 916             echo "No release specified with -R, defaulting to 6.5"
 917             container_release_version="6.5"
 918         fi
 919     fi
 920     container_release_major=`echo $container_release_version |awk -F '.' '{print $1}'`
 921     container_release_minor=`echo $container_release_version |awk -F '.' '{print $2}'`
 922 fi
 923
 924 container_config_create
 925 if [ -n "$template_rootfs" ]; then
 926     container_rootfs_clone
 927 else
 928     container_rootfs_create
 929 fi
 930
 931 container_release_get $container_rootfs
 932
 933 container_rootfs_configure
 934
 935 echo "Container : $container_rootfs"
 936 echo "Config    : $cfg_dir/config"
 937 echo "Network   : eth0 ($lxc_network_type) on $lxc_network_link"