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add oracle template (From: Dwight Engen)
This is a new template to create containers based on Oracle Linux. A version such as 5.8, 6.3, or 6.latest can be specified with -R in which case a rootfs will be created from rpms downloaded from the Oracle public-yum repo. Alternatively the path to an existing rootfs of Oracle 5 or 6 may be given to the template with the -t option. The architecture of the downloaded rpms installed in the container can be specified with the -a template option. Signed-off-by: Dwight Engen <dwight.engen@oracle.com> Signed-off-by: Serge Hallyn <serge.hallyn@ubuntu.com>
This commit is contained in:
Serge Hallyn
Stéphane Graber
parent
037ba55cbe
commit
708f4a80ea
@ -197,6 +197,7 @@ AC_CONFIG_FILES([
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templates/lxc-opensuse
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templates/lxc-busybox
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templates/lxc-fedora
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templates/lxc-oracle
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templates/lxc-altlinux
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templates/lxc-sshd
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templates/lxc-archlinux
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@ -7,6 +7,7 @@ templates_SCRIPTS = \
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lxc-ubuntu-cloud \
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lxc-opensuse \
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lxc-fedora \
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lxc-oracle \
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lxc-altlinux \
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lxc-busybox \
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lxc-sshd \
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496
templates/lxc-oracle.in
Normal file
496
templates/lxc-oracle.in
Normal file
@ -0,0 +1,496 @@
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#!/bin/bash
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#
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# Template script for generating Oracle Enterprise Linux container for LXC
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# based on lxc-fedora, lxc-ubuntu
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#
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# Copyright © 2011 Wim Coekaerts <wim.coekaerts@oracle.com>
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# Copyright © 2012 Dwight Engen <dwight.engen@oracle.com>
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#
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# Modified for Oracle Linux 5
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# Wim Coekaerts <wim.coekaerts@oracle.com>
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#
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# Modified for Oracle Linux 6, combined OL5,6 into one template script
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# Dwight Engen <dwight.engen@oracle.com>
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#
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# This library is free software; you can redistribute it and/or
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# modify it under the terms of the GNU Lesser General Public
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# License as published by the Free Software Foundation; either
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# version 2.1 of the License, or (at your option) any later version.
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#
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# This library is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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# Lesser General Public License for more details.
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#
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# You should have received a copy of the GNU Lesser General Public
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# License along with this library; if not, write to the Free Software
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# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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#
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# use virbr0 that is setup by default by libvirtd
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lxc_network_type=veth
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lxc_network_link=virbr0
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die()
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{
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echo "failed: $1"
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exit 1
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}
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is_btrfs_subvolume()
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{
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if which btrfs >/dev/null 2>&1 && \
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btrfs subvolume list "$1" >/dev/null 2>&1; then
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return 0
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fi
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return 1
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}
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# fix up the container_rootfs
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container_rootfs_configure()
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{
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echo "Configuring container for Oracle Linux $container_release_major"
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# "disable" selinux. init in OL 5 honors /etc/selinux/config. note that
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# this doesnt actually disable it if it's enabled in the host, since
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# libselinux::is_selinux_enabled() in the guest will check
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# /proc/filesystems and see selinuxfs, thus reporting that it is on
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# (ie. check the output of sestatus in the guest)
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mkdir -p $container_rootfs/selinux
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echo 0 > $container_rootfs/selinux/enforce
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if [ -e $container_rootfs/etc/selinux/config ]; then
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sed -i 's|SELINUX=enforcing|SELINUX=disabled|' $container_rootfs/etc/selinux/config
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else
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echo "SELINUX=disabled" >$container_rootfs/etc/selinux/config
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fi
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if [ $container_release_major = "5" ]; then
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sed -i 's|session[ ]*required[ ]*pam_selinux.so[ ]*close|#session required pam_selinux.so close|' $container_rootfs/etc/pam.d/login
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sed -i 's|session[ ]*required[ ]*pam_selinux.so[ ]*open|#session required pam_selinux.so open|' $container_rootfs/etc/pam.d/login
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fi
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# configure the network to use dhcp. we set DHCP_HOSTNAME so the guest
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# will report its name and be resolv'able by the hosts dnsmasq
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touch $container_rootfs/etc/resolv.conf
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cat <<EOF > $container_rootfs/etc/sysconfig/network-scripts/ifcfg-eth0
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DEVICE=eth0
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BOOTPROTO=dhcp
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ONBOOT=yes
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HOSTNAME=$name
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DHCP_HOSTNAME=$name
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NM_CONTROLLED=no
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TYPE=Ethernet
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EOF
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# set the hostname
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cat <<EOF > $container_rootfs/etc/sysconfig/network
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NETWORKING=yes
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NETWORKING_IPV6=no
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HOSTNAME=$name
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EOF
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# set minimal hosts
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echo "127.0.0.1 localhost $name" > $container_rootfs/etc/hosts
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# disable ipv6
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echo "blacklist ipv6" >>$container_rootfs/etc/modprobe.d/blacklist.conf
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echo "blacklist net-pf-10" >>$container_rootfs/etc/modprobe.d/blacklist.conf
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rm $container_rootfs/etc/sysconfig/network-scripts/init.ipv6-global
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cat <<EOF > $container_rootfs/etc/fstab
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proc /proc proc nodev,noexec,nosuid 0 0
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devpts /dev/pts devpts defaults 0 0
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sysfs /sys sysfs defaults 0 0
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EOF
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# remove module stuff for iptables it just shows errors that are not
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# relevant in a container
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if [ -f "$container_rootfs/etc/sysconfig/iptables-config" ]; then
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sed -i 's|IPTABLES_MODULES=".*|IPTABLES_MODULES=""|' $container_rootfs/etc/sysconfig/iptables-config
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sed -i 's|IPTABLES_MODULES_UNLOAD=".*|IPTABLES_MODULES_UNLOAD="no"|' $container_rootfs/etc/sysconfig/iptables-config
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fi
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# disable readahead in the container
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if [ $container_release_major = "6" -a -e $container_rootfs/etc/sysconfig/readahead ]; then
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rm -f $container_root/etc/init/readahead-collector.conf
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rm -f $container_root/etc/init/readahead-disable-services.conf
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sed -i 's|READAHEAD="yes"|READAHEAD="no"|' $container_rootfs/etc/sysconfig/readahead
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fi
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# disable udev in the container
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sed -i 's|.sbin.start_udev||' $container_rootfs/etc/rc.sysinit
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sed -i 's|.sbin.start_udev||' $container_rootfs/etc/rc.d/rc.sysinit
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# disable nash raidautorun in the container since no /dev/md*
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if [ $container_release_major = "5" ]; then
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sed -i 's|echo "raidautorun /dev/md0"|echo ""|' $container_rootfs/etc/rc.sysinit
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sed -i 's|echo "raidautorun /dev/md0"|echo ""|' $container_rootfs/etc/rc.d/rc.sysinit
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fi
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# prevent rc.sysinit from attempting to loadkeys
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if [ $container_release_major = "5" -a -e $container_rootfs/etc/sysconfig/keyboard ]; then
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rm $container_rootfs/etc/sysconfig/keyboard
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fi
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# dont try to sync the hwclock at shutdown
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sed -i 's|\[ -x /sbin/hwclock|\[ 0 -eq 1|' $container_rootfs/etc/rc.d/init.d/halt
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# dont start lvm
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sed -i 's|action $"Setting up Logical Volume Management:"|#action $"Setting up Logical Volume Management:"|' $container_rootfs/etc/rc.sysinit
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sed -i 's|action $"Setting up Logical Volume Management:"|/bin/true #action $"Setting up Logical Volume Management:"|' $container_rootfs/etc/rc.d/rc.sysinit
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# fix assumptions that plymouth is available
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sed -i 's|\[ "$PROMPT" != no \] && plymouth|[ "$PROMPT" != no ] \&\& [ -n "$PLYMOUTH" ] \&\& plymouth|' $container_rootfs/etc/rc.sysinit
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sed -i 's|\[ "$PROMPT" != no \] && plymouth|[ "$PROMPT" != no ] \&\& [ -n "$PLYMOUTH" ] \&\& plymouth|' $container_rootfs/etc/rc.d/rc.sysinit
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rm -f $container_root/etc/init/plymouth-shutdown.conf
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rm -f $container_root/etc/init/quit-plymouth.conf
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rm -f $container_root/etc/init/splash-manager.conf
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# setup console and tty[1-4] for login. note that /dev/console and
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# /dev/tty[1-4] will be symlinks to the ptys /dev/lxc/console and
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# /dev/lxc/tty[1-4] so that package updates can overwrite the symlinks.
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# lxc will maintain these links and bind mount ptys over /dev/lxc/*
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# since lxc.devttydir is specified in the config.
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# allow root login on console and tty[1-4]
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echo "# LXC (Linux Containers)" >>$container_rootfs/etc/securetty
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echo "lxc/console" >>$container_rootfs/etc/securetty
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echo "lxc/tty1" >>$container_rootfs/etc/securetty
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echo "lxc/tty2" >>$container_rootfs/etc/securetty
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echo "lxc/tty3" >>$container_rootfs/etc/securetty
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echo "lxc/tty4" >>$container_rootfs/etc/securetty
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# dont try to unmount /dev/lxc devices
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sed -i 's|&& $1 !~ /^\\/dev\\/ram/|\&\& $2 !~ /^\\/dev\\/lxc/ \&\& $1 !~ /^\\/dev\\/ram/|' $container_rootfs/etc/init.d/halt
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# start a getty on /dev/console, /dev/tty[1-4]
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if [ $container_release_major = "5" ]; then
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sed -i '/1:2345:respawn/i cns:2345:respawn:/sbin/mingetty console' $container_rootfs/etc/inittab
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sed -i '/5:2345:respawn/d' $container_rootfs/etc/inittab
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sed -i '/6:2345:respawn/d' $container_rootfs/etc/inittab
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fi
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if [ $container_release_major = "6" ]; then
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cat <<EOF > $container_rootfs/etc/init/console.conf
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# console - getty
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#
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# This service maintains a getty on the console from the point the system is
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# started until it is shut down again.
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start on stopped rc RUNLEVEL=[2345]
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stop on runlevel [!2345]
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respawn
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exec /sbin/mingetty /dev/console
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EOF
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fi
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# there might be other services that are useless but the below set is a good start
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# some of these might not exist in the image, so we silence chkconfig complaining
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# about the service file not being found
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for service in \
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acpid auditd autofs cpuspeed dund gpm haldaemon hidd \
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ip6tables irqbalance iscsi iscsid isdn kdump kudzu \
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lm_sensors lvm2-monitor mdmonitor microcode_ctl \
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ntpd postfix sendmail udev-post ;
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do
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chroot $container_rootfs chkconfig 2>/dev/null $service off
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done
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for service in rsyslog ;
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do
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chroot $container_rootfs chkconfig 2>/dev/null $service on
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done
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# create required devices
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# take care to not nuke /dev in case $container_rootfs isn't set
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dev_path="$container_rootfs/dev"
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if [ $container_rootfs != "/" -a -d $dev_path ]; then
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rm -rf $dev_path
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mkdir -p $dev_path
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fi
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mknod -m 666 $dev_path/null c 1 3
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mknod -m 666 $dev_path/zero c 1 5
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mknod -m 666 $dev_path/random c 1 8
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mknod -m 666 $dev_path/urandom c 1 9
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mkdir -m 755 $dev_path/pts
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mkdir -m 1777 $dev_path/shm
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mknod -m 666 $dev_path/tty c 5 0
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mknod -m 666 $dev_path/tty0 c 4 0
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mknod -m 666 $dev_path/tty1 c 4 1
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mknod -m 666 $dev_path/tty2 c 4 2
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mknod -m 666 $dev_path/tty3 c 4 3
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mknod -m 666 $dev_path/tty4 c 4 4
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mknod -m 600 $dev_path/console c 5 1
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mknod -m 666 $dev_path/full c 1 7
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mknod -m 600 $dev_path/initctl p
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# ensure /dev/ptmx refers to the newinstance devpts of the container, or
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# pty's will get crossed up with the hosts (https://lkml.org/lkml/2012/1/23/512)
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rm -f $container_rootfs/dev/ptmx
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ln -s pts/ptmx $container_rootfs/dev/ptmx
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# start with a clean /var/log/messages
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rm -f $container_rootfs/var/log/messages
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# add oracle user, set root password
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chroot $container_rootfs useradd --create-home -s /bin/bash oracle
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echo "oracle:oracle" | chroot $container_rootfs chpasswd
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echo "root:root" | chroot $container_rootfs chpasswd
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echo -e "Added container user:\033[1moracle\033[0m password:\033[1moracle\033[0m"
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echo -e "Added container user:\033[1mroot\033[0m password:\033[1mroot\033[0m"
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}
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# create the container's lxc config file
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container_config_create()
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{
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echo "Create configuration file $cfg_dir/config"
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# generate a hwaddr for the container with a high mac address
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# see http://sourceforge.net/tracker/?func=detail&aid=3411497&group_id=163076&atid=826303
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local hwaddr="fe:`dd if=/dev/urandom bs=8 count=1 2>/dev/null |od -t x8 | \
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head -1 |awk '{print $2}' | cut -c1-10 |\
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sed 's/\(..\)/\1:/g; s/.$//'`"
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mkdir -p $cfg_dir || die "unable to create config dir $cfg_dir"
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rm -f $cfg_dir/config
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cat <<EOF >> $cfg_dir/config || die "unable to create $cfg_dir/config"
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# Container configuration for Oracle Linux $release_major.$release_minor
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lxc.arch = $arch
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lxc.utsname = $name
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lxc.devttydir = lxc
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lxc.tty = 4
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lxc.pts = 1024
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lxc.rootfs = $container_rootfs
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lxc.mount = $cfg_dir/fstab
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# Networking
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lxc.network.type = $lxc_network_type
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lxc.network.flags = up
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lxc.network.link = $lxc_network_link
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lxc.network.name = eth0
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lxc.network.mtu = 1500
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lxc.network.hwaddr = $hwaddr
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# Control Group devices: all denied except those whitelisted
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lxc.cgroup.devices.deny = a
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lxc.cgroup.devices.allow = c 1:3 rwm # /dev/null
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lxc.cgroup.devices.allow = c 1:5 rwm # /dev/zero
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lxc.cgroup.devices.allow = c 1:7 rwm # /dev/full
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lxc.cgroup.devices.allow = c 5:0 rwm # /dev/tty
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lxc.cgroup.devices.allow = c 1:8 rwm # /dev/random
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lxc.cgroup.devices.allow = c 1:9 rwm # /dev/urandom
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lxc.cgroup.devices.allow = c 136:* rwm # /dev/tty[1-4] ptys and lxc console
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lxc.cgroup.devices.allow = c 5:2 rwm # /dev/ptmx pty master
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lxc.cgroup.devices.allow = c 254:0 rwm # /dev/rtc0
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EOF
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cat <<EOF > $cfg_dir/fstab || die "unable to create $cfg_dir/fstab"
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proc $container_rootfs/proc proc nodev,noexec,nosuid 0 0
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devpts $container_rootfs/dev/pts devpts defaults 0 0
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sysfs $container_rootfs/sys sysfs defaults 0 0
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EOF
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}
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container_rootfs_clone()
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{
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if is_btrfs_subvolume $template_rootfs; then
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# lxc-create already made $container_rootfs a btrfs subvolume, but
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# in this case we want to snapshot the original subvolume so we we
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# have to delete the one that lxc-create made
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btrfs subvolume delete $container_rootfs
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btrfs subvolume snapshot $template_rootfs $container_rootfs || die "btrfs clone template"
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else
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cp -ax $template_rootfs $container_rootfs || die "copy template"
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fi
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}
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container_rootfs_create()
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{
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cmds="rpm wget yum"
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if [ $release_major = "5" ]; then
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cmds="$cmds db_dump db43_load"
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fi
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for cmd in $cmds; do
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which $cmd >/dev/null 2>&1
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if [ $? -ne 0 ]; then
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die "The $cmd command is required, please install it"
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fi
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done
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mkdir -p /var/lock/subsys/
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(
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flock -x 200
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if [ $? -ne 0 ]; then
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die "The template is busy."
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fi
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echo "Downloading release $release_major.$release_minor for $basearch"
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# get yum repo file
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public_yum_url=http://public-yum.oracle.com
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if [ $release_major = "5" ]; then
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repofile=public-yum-el5.repo
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elif [ $release_major = "6" ]; then
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repofile=public-yum-ol6.repo
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else
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die "Unsupported release $release_major"
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fi
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mkdir -p $container_rootfs/etc/yum.repos.d
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wget -q $public_yum_url/$repofile -O $container_rootfs/etc/yum.repos.d/$repofile
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if [ $? -ne 0 ]; then
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die "Failed to download repo file $public_yum_url/$repofile"
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fi
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# yum will take $basearch from host, so force the arch we want
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sed -i "s|\$basearch|$basearch|" $container_rootfs/etc/yum.repos.d/$repofile
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# replace url if they specified one
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if [ -n "$repourl" ]; then
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sed -i "s|baseurl=http://public-yum.oracle.com/repo|baseurl=$repourl/repo|" $container_rootfs/etc/yum.repos.d/$repofile
|
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sed -i "s|gpgkey=http://public-yum.oracle.com|gpgkey=$repourl|" $container_rootfs/etc/yum.repos.d/$repofile
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fi
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# disable all repos, then enable the repo for the version we are installing.
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if [ $release_minor = "latest" ]; then
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if [ $release_major = "5" ]; then
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repo="el"$release_major"_"$release_minor
|
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else
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repo="ol"$release_major"_"$release_minor
|
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fi
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elif [ $release_minor = "0" ]; then
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repo="ol"$release_major"_ga_base"
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else
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repo="ol"$release_major"_u"$release_minor"_base"
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fi
|
||||
sed -i "s|enabled=1|enabled=0|" $container_rootfs/etc/yum.repos.d/$repofile
|
||||
sed -i "/\[$repo\]/,/\[/ s/enabled=0/enabled=1/" $container_rootfs/etc/yum.repos.d/$repofile
|
||||
|
||||
# create rpm db, download and yum install minimal packages
|
||||
mkdir -p $container_rootfs/var/lib/rpm
|
||||
rpm --root $container_rootfs --initdb
|
||||
yum_cmd="yum --installroot $container_rootfs --disablerepo=* --enablerepo=$repo -y --nogpgcheck"
|
||||
min_pkgs="yum initscripts passwd rsyslog vim-minimal openssh-server dhclient chkconfig rootfiles policycoreutils oraclelinux-release"
|
||||
|
||||
$yum_cmd install $min_pkgs
|
||||
if [ $? -ne 0 ]; then
|
||||
die "Failed to download and install the rootfs, aborting."
|
||||
fi
|
||||
|
||||
# rsyslog and pam depend on coreutils for some common commands in
|
||||
# their POSTIN scriptlets, but coreutils wasn't installed yet. now
|
||||
# that coreutils is installed, reinstall the packages so their POSTIN
|
||||
# runs right. similarly, libutempter depends on libselinux.so.1 when
|
||||
# it runs /usr/sbin/groupadd, so reinstall it too
|
||||
if [ $release_major = "5" ]; then
|
||||
rpm --root $container_rootfs --nodeps -e rsyslog pam libutempter
|
||||
$yum_cmd install rsyslog pam libutempter
|
||||
if [ $? -ne 0 ]; then
|
||||
die "Unable to reinstall packages"
|
||||
fi
|
||||
fi
|
||||
|
||||
# if we're on 6 and installing 5 we need to fix up the rpm database
|
||||
# since 5 uses an older db format
|
||||
if [ $release_major = "5" -a $host_release_major = "6" ]; then
|
||||
echo "Fixing (downgrading) rpm database"
|
||||
rm -f $container_rootfs/var/lib/rpm/__db*
|
||||
for db in $container_rootfs/var/lib/rpm/* ; do
|
||||
db_dump $db |db43_load $db.new
|
||||
mv $db.new $db
|
||||
done
|
||||
chroot $container_rootfs rpm --rebuilddb
|
||||
fi
|
||||
|
||||
) 200>/var/lock/subsys/lxc-oracle-$name
|
||||
}
|
||||
|
||||
usage()
|
||||
{
|
||||
cat <<EOF
|
||||
-a|--arch=<arch> architecture (ie. i686, x86_64)
|
||||
-R|--release=<release> release to download for the new container
|
||||
-u|--url=<url> replace yum repo url (ie. local yum mirror)
|
||||
-t|--templatefs=<path> copy/clone rootfs at path instead of downloading
|
||||
-h|--help
|
||||
|
||||
Release is of the format "major.minor", for example "5.8", "6.3", or "6.latest"
|
||||
EOF
|
||||
return 0
|
||||
}
|
||||
|
||||
options=$(getopt -o hp:n:a:R:u:t: -l help,path:,name:,arch:,release:,url:,templatefs: -- "$@")
|
||||
if [ $? -ne 0 ]; then
|
||||
usage $(basename $0)
|
||||
exit 1
|
||||
fi
|
||||
|
||||
arch=$(arch)
|
||||
eval set -- "$options"
|
||||
while true
|
||||
do
|
||||
case "$1" in
|
||||
-h|--help) usage $0 && exit 0;;
|
||||
-p|--path) cfg_dir=$2; shift 2;;
|
||||
-n|--name) name=$2; shift 2;;
|
||||
-a|--arch) arch=$2; shift 2;;
|
||||
-R|--release) release_version=$2; shift 2;;
|
||||
-u|--url) repourl=$2; shift;;
|
||||
-t|--templatefs) template_rootfs=$2; shift 2;;
|
||||
--) shift 1; break ;;
|
||||
*) break ;;
|
||||
esac
|
||||
done
|
||||
|
||||
# make sure mandatory args are given and valid
|
||||
if [ "$(id -u)" != "0" ]; then
|
||||
echo "This script should be run as 'root'"
|
||||
exit 1
|
||||
fi
|
||||
|
||||
if [ -z $name ]; then
|
||||
echo "Container name must be given"
|
||||
usage
|
||||
exit 1
|
||||
fi
|
||||
|
||||
if [ -z $cfg_dir ]; then
|
||||
echo "Configuration directory must be given, check lxc-create"
|
||||
usage
|
||||
exit 1
|
||||
fi
|
||||
|
||||
basearch=$arch
|
||||
if [ "$arch" = "i686" ]; then
|
||||
basearch="i386"
|
||||
fi
|
||||
|
||||
container_rootfs="$cfg_dir/rootfs"
|
||||
|
||||
if [ -n "$template_rootfs" ]; then
|
||||
release_version=`cat $template_rootfs/etc/oracle-release |awk '/^Oracle/ {print $5}'`
|
||||
fi
|
||||
if [ -z "$release_version" ]; then
|
||||
echo "No release specified with -R, defaulting to 6.3"
|
||||
release_version="6.3"
|
||||
fi
|
||||
release_major=`echo $release_version |awk -F '.' '{print $1}'`
|
||||
release_minor=`echo $release_version |awk -F '.' '{print $2}'`
|
||||
|
||||
host_release_version=`cat /etc/oracle-release |awk '/^Oracle/ {print $5}'`
|
||||
host_release_major=`echo $host_release_version |awk -F '.' '{print $1}'`
|
||||
host_release_minor=`echo $host_release_version |awk -F '.' '{print $2}'`
|
||||
|
||||
trap cleanup SIGHUP SIGINT SIGTERM
|
||||
|
||||
container_config_create
|
||||
if [ -n "$template_rootfs" ]; then
|
||||
container_rootfs_clone
|
||||
else
|
||||
container_rootfs_create
|
||||
fi
|
||||
|
||||
container_release_version=`cat $container_rootfs/etc/oracle-release |awk '/^Oracle/ {print $5}'`
|
||||
container_release_major=`echo $container_release_version |awk -F '.' '{print $1}'`
|
||||
container_release_minor=`echo $container_release_version |awk -F '.' '{print $2}'`
|
||||
|
||||
container_rootfs_configure
|
||||
|
||||
echo "Container : $container_rootfs"
|
||||
echo "Config : $cfg_dir/config"
|
||||
echo "Network : eth0 ($lxc_network_type) on $lxc_network_link"
|
||||
Loading…
Reference in New Issue
Block a user