580 lines
21 KiB
Bash
580 lines
21 KiB
Bash
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#!/bin/sh
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################################################################################
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# xmclone by Bob Brandt #
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# based on XenClone by Glen Davis #
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# Clone a SLES10 domU #
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################################################################################
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################################################################################
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# Defaults #
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# #
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VERSION=0.3
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XEN_CONFIGS=/etc/xen/vm/
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XEN_BASE=/xen/
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SOURCE=
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DESTINATION=
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DUPLICATE=0
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HOSTNAME=
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IP=
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MAC=
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################################################################################
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################################################################################
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# Subroutines used in this script #
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# #
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# Display the usage information for this script #
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usage()
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{
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echo -e "\nUsage: ${0##*/} [-h|?|--help] [-v|--version] [-c dir] [-b dir] [-d]"
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echo -e " [-n hostname] [-i address] [-m address]"
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echo -e " SourcedomU NewdomU\n"
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echo -e "Clones a domU, and gives a new Host name, MAC address and possibly IP address."
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echo -e "Once finished the new domU should boot without any additional configuration."
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echo -e "Currently works with single NIC, and basic bridge setup. Tested with cloning"
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echo -e "a SLES10 install created from the SLES10 YaST Xen module.\n"
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echo -e " -h, -?, --help Display this help message."
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echo -e " -v, --version Display the version of this program."
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echo -e " -c XEN configuration directory which defaults to:"
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echo -e " $XEN_CONFIGS"
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echo -e " -b XEN image base directory which defaults to:"
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echo -e " $XEN_BASE"
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echo -e " -d Only Duplicate, do not modify attributes."
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echo -e " -n Hostname to be used, if not specified the NewdomU name"
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echo -e " will be used."
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echo -e " -i IP address to be used, if not specified the IP address"
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echo -e " will not be changed."
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echo -e " -m MAC address to be used, if not specified a psuedo-random"
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echo -e " address will be used based on the ip address with the"
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echo -e " format: 00:16:AA:BB:CC:DD"
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echo -e " Where AA,BB,CC,DD are the Hex octals of the IP address."
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echo -e "From XENSource Networking WIKI (http://wiki.xensource.com/xenwiki/XenNetworking)"
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echo -e "Virtualised network interfaces in domains are given Ethernet MAC addresses. When"
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echo -e "choosing MAC addresses to use, ensure you choose a unicast address. That is, one"
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echo -e "with the low bit of the first octet set to zero. For example, an address"
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echo -e "starting aa: is OK but ab: is not."
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echo -e 'It is best to keep to the range of addresses declared to be "locally assigned"'
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echo -e "(rather than allocated globally to hardware vendors). These have the second"
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echo -e "lowest bit set to one in the first octet. For example, aa: is OK, a8: isn't.\n"
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echo -e "Exit status is 0 if OK, 1 if minor problems, 2 if serious trouble.\n"
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}
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# Display the version information for this script #
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version()
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{
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echo -e "${0##*/} (XEN vm clone utility) $VERSION"
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echo -e "This is free software. You may redistribute copies of it under the terms of"
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echo -e "the GNU General Public License <http://www.gnu.org/licenses/gpl.html>."
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echo -e "There is NO WARRANTY, to the extent permitted by law.\n"
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echo -e "Written by Bob Brandt, based on work by Glen Davis."
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}
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# Find/Replace text within a file #
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replace()
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{
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SearchText=$1
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ReplaceText=$2
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File=$3
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if sed "s/$SearchText/$ReplaceText/g" "$File" > "$File.temporary" && sleep 1
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then
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if mv -f "$File.temporary" "$File" && sleep 1
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then
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return 0
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fi
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fi
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return 1
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}
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################################################################################
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################################################################################
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# Make sure the user is root #
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# #
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if [ `id -u` -ne 0 ]; then
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echo -e "You must be root to run this script!\n"
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exit 1
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fi
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################################################################################
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################################################################################
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# Process the parameters #
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# #
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# Must look for double -- arguments before getopts
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if [ "$1" = "--version" ]; then
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version
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exit 0;
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fi
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if [ "$1" = "--help" ]; then
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usage
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exit 0;
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fi
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while getopts ":hvc:b:dn:i:m:" opt; do
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case $opt in
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h | \? )
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usage
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exit 0;;
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v )
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version
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exit 0;;
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c ) XEN_CONFIGS=$OPTARG;;
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b ) XEN_BASE=$OPTARG;;
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d ) DUPLICATE=1;;
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n ) HOSTNAME=$OPTARG;;
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i ) IP=$OPTARG;;
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m ) MAC=$OPTARG;;
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esac
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done
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shift $(($OPTIND-1))
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SOURCE=$1
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DESTINATION=$2
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################################################################################
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################################################################################
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# Verify the Source and Destination parameters #
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# #
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# The source and destination should be relative directory names without trailing /'s
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# If the source does have a full path, use that path as the XEN_BASE
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# Otherwise remove all but the last part of the path for both source and destination
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SOURCEDIR=${SOURCE%/*}
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SOURCEBASE=${SOURCE##*/}
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if [ "$SOURCEDIR" != "$SOURCEBASE" ]; then
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XEN_BASE=$SOURCEDIR"/"
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SOURCE=$SOURCEBASE
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fi
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SOURCE=${SOURCE##*/}
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DESTINATION=${DESTINATION##*/}
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################################################################################
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################################################################################
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# Verify the XEN Config and Source parameters #
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# #
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# Directories should have a / after them #
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if [ "$XEN_CONFIGS" != "" ]; then
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XEN_CONFIGS="${XEN_CONFIGS%/}/"
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fi
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if [ "$XEN_BASE" != "" ]; then
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XEN_BASE="${XEN_BASE%/}/"
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fi
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# Verify the validity of each agrument ask the user if there is a problem
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while [ ! -d "$XEN_CONFIGS" ]; do
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echo -e "\nThe $XEN_CONFIGS directory does not exist. Please enter a valid directory."
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read -p "XEN Configuration Directory? " XEN_CONFIGS
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done
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while [ ! -d "$XEN_BASE" ]; do
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echo -e "\nThe $XEN_BASE directory does not exist. Please enter a valid directory."
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read -p "XEN Image Base Directory? " XEN_BASE
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done
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################################################################################
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################################################################################
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# Verify that actual image and configuration file exist #
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# #
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while [ ! -d "$XEN_BASE$SOURCE" ] || [ ! -f "$XEN_CONFIGS$SOURCE" ]; do
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if [ ! -d "$XEN_BASE$SOURCE" ]; then
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echo -e "The directory $XEN_BASE$SOURCE is invalid, please select another."
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FILES=
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tmpFILES=`ls $XEN_BASE`
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for FILE in $tmpFILES; do
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# If the Entry is a Directory
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if [ -d "$XEN_BASE$FILE" ]; then
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# And if that Directory is not empty
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if [ "`ls $XEN_BASE$FILE`" != "" ]; then
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FILES="$FILES $XEN_BASE$FILE"
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fi
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fi
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done
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if [ "$FILES" = "" ]; then
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echo -e "There are no directories beneath $XEN_BASE"
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exit 1
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else
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echo -e "Directories beneath $XEN_BASE"
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select FILE in $FILES; do
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if [ "$FILE" ]; then
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SOURCE=${FILE##*/}
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break
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else
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echo -e "Invalid Selection."
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fi
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done
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fi
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fi
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if [ ! -f "$XEN_CONFIGS$SOURCE" ]; then
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echo -e "\nThe $XEN_CONFIGS$SOURCE file does not exist. Please select a valid file."
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FILES=
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tmpFILES=`ls $XEN_CONFIGS`
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for FILE in $tmpFILES; do
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# If the Entry is a File
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if [ -f "$XEN_CONFIGS$FILE" ]; then
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FILES="$FILES $XEN_CONFIGS$FILE"
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fi
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done
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if [ "$FILES" = "" ]; then
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echo -e "There are no files beneath $XEN_CONFIGS"
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exit 1
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else
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echo -e "Files beneath $XEN_CONFIGS"
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select FILE in $FILES; do
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if [ "$FILE" ]; then
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SOURCE=${FILE##*/}
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break
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else
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echo -e "Invalid Selection."
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fi
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done
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fi
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fi
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done
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################################################################################
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################################################################################
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# That the destination location does not already have a image or config file #
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# #
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while [ "$DESTINATION" == "" ]; do
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echo -e "\nYou have not specified a Destination."
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read -p "New Destination? " DESTINATION
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done
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while [ -d "$XEN_BASE$DESTINATION" ] || [ -f "$XEN_CONFIGS$DESTINATION" ]; do
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if [ -d "$XEN_BASE$DESTINATION" ]; then
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echo -e "The image location $XEN_BASE$DESTINATION already exists!"
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read -p "Please select a new Destination? " DESTINATION
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fi
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if [ -f "$XEN_CONFIGS$DESTINATION" ]; then
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echo -e "The configuration file $XEN_CONFIGS$DESTINATION already exists!"
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read -p "Please select a new Destination? " DESTINATION
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fi
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done
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################################################################################
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################################################################################
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# Verify the network parameters (if Duplicate Only was not selected) #
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# #
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if [ "$DUPLICATE" == "0" ]; then
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if [ "$HOSTNAME" == "" ]; then
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echo -e "\nYou have not entered a Host Name. If you wish to, enter one now."
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read -p "New Host Name? (Default: $DESTINATION) " HOSTNAME
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fi
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if [ "$HOSTNAME" == "" ]; then
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HOSTNAME=$DESTINATION
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fi
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if [ "$IP" == "" ]; then
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echo -e "\nYou have not specified an IP Address. If you wish to change the IP address, enter one now."
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read -p "New IP Address? " IP
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fi
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while [ "$IP" != "" ] && [ "${IP/*.*.*.*/ok}" != "ok" ]; do
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echo -e "\nThe IP Address you specified is invalid. If you wish, enter a new one now."
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read -p "New IP Address? " IP
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if [ "$IP" == "" ]; then
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break
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fi
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done
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if [ "$MAC" == "" ]; then
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newMAC=""
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newMACtext="(format 01:23:45:67:89:AB)"
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# If the IP Address is specified and the MAC isn't, generate one.
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if [ "$IP" != "" ]; then
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octal1=${IP%%.*}
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IP=${IP#*.}
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octal2=${IP%%.*}
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IP=${IP#*.}
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octal3=${IP%%.*}
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octal4=${IP#*.}
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IP="$octal1.$octal2.$octal3.$octal4"
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octal1="00"`echo $octal1 16 o p | dc`
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octal2="00"`echo $octal2 16 o p | dc`
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octal3="00"`echo $octal3 16 o p | dc`
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octal4="00"`echo $octal4 16 o p | dc`
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newMAC="00:16:"${octal1:(-2)}":"${octal2:(-2)}":"${octal3:(-2)}":"${octal4:(-2)}
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newMACtext="(default $newMAC)"
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fi
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echo -e "\nYou have not specified a MAC Address. If you wish to change the MAC address, enter one now."
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read -p "New MAC Address? $newMACtext " MAC
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if [ "$MAC" == "" ]; then
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MAC=$newMAC
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fi
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fi
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while [ "$MAC" != "" ] && [ "${MAC/[0123456789abcdefABCDEF][0123456789abcdefABCDEF]:[0123456789abcdefABCDEF][0123456789abcdefABCDEF]:[0123456789abcdefABCDEF][0123456789abcdefABCDEF]:[0123456789abcdefABCDEF][0123456789abcdefABCDEF]:[0123456789abcdefABCDEF][0123456789abcdefABCDEF]:[0123456789abcdefABCDEF][0123456789abcdefABCDEF]/ok}" != "ok" ]; do
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echo -e "\nThe MAC Address you specified is invalid. If you wish, enter a new one now."
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read -p "New MAC Address? (format 01:23:45:67:89:AB) " MAC
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if [ "$MAC" == "" ]; then
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break
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fi
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done
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else
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HOSTNAME=
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IP=
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MAC=
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fi
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################################################################################
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################################################################################
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# Make sure that the source VM is not running #
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# #
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xmid=`xm list | grep $SOURCE | cut -c34-36`
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if [ "$xmid" != "" ]; then
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echo -e "domU $SOURCE is currently running on Xen, please shutdown before cloning."
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echo -e "The command \"xm shutdown $xmid -w\" will shutdown the domU"
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exit 1
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fi
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################################################################################
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################################################################################
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# Copy the XEN Config file #
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# #
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SOURCECONFIG="$XEN_CONFIGS$SOURCE"
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DESTCONFIG="$XEN_CONFIGS$DESTINATION"
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echo -e "Copying Configuration files"
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if ! cp -fv "$SOURCECONFIG" "$DESTCONFIG"
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then
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echo -e "The Config file $SOURCECONFIG was unable to be copied to $DESTCONFIG"
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exit 1
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fi
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################################################################################
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################################################################################
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# Edit newly copied configuration file #
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# #
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echo -e "Editing config file ($DESTCONFIG), correcting the new domU Name."
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if ! replace $SOURCE $DESTINATION $DESTCONFIG
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then
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echo -e "Unable to change the domU name in $DESTCONFIG from $SOURCE to $DESTINATION"
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exit 1
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fi
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if [ "$DUPLICATE" == "0" ] && [ "$MAC" != "" ]; then
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# Get the vif line in the config file
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oldMAC=`grep "vif = " $DESTCONFIG`
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# extract everything between the square brackets
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oldMAC=${oldMAC#*[}
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oldMAC=${oldMAC%*]}
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# using the single quotes as delimiters, get the second field (this script can only deal with one adapter!)
|
||
|
|
oldMAC=`echo "$oldMAC" | cut -f2 -d\'`
|
||
|
|
# remove the mac= from the beginning
|
||
|
|
oldMAC=${oldMAC#mac=*}
|
||
|
|
|
||
|
|
if ! replace $oldMAC $MAC $DESTCONFIG
|
||
|
|
then
|
||
|
|
echo -e "Unable to change the MAC address in $DESTCONFIG from ($oldMAC) to ($MAC)"
|
||
|
|
exit 1
|
||
|
|
fi
|
||
|
|
fi
|
||
|
|
################################################################################
|
||
|
|
|
||
|
|
|
||
|
|
################################################################################
|
||
|
|
# Create and Copy image directory #
|
||
|
|
# #
|
||
|
|
SOURCEXEN="$XEN_BASE$SOURCE/"
|
||
|
|
DESTXEN="$XEN_BASE$DESTINATION/"
|
||
|
|
echo -e "Creating the new image directory $DESTXEN"
|
||
|
|
if ! mkdir -pv --mode=775 "$DESTXEN"
|
||
|
|
then
|
||
|
|
echo -e "Unable to create the directory $DESTXEN"
|
||
|
|
exit 1
|
||
|
|
fi
|
||
|
|
echo -e "Copying complete image. (This may take a few minutes!)"
|
||
|
|
|
||
|
|
if ! cp -fv --sparse=never $SOURCEXEN* $DESTXEN
|
||
|
|
then
|
||
|
|
echo -e "Unable to copy the images from $SOURCEXEN to $DESTXEN"
|
||
|
|
exit 1
|
||
|
|
fi
|
||
|
|
################################################################################
|
||
|
|
|
||
|
|
|
||
|
|
# The rest of the document only applies if we are change the values within the image
|
||
|
|
if [ "$DUPLICATE" == "0" ] && [ "$MAC" != "" ]; then
|
||
|
|
############################################################################
|
||
|
|
# Mount the newly copied image file #
|
||
|
|
# #
|
||
|
|
# Find a temporary directory name
|
||
|
|
tmpdir="/mnt/xentmp"
|
||
|
|
declare -i a=0
|
||
|
|
while [ -d "$tmpdir$a" ]; do
|
||
|
|
a=a+1
|
||
|
|
done
|
||
|
|
tmpdir="$tmpdir$a"
|
||
|
|
if ! mkdir -pv "$tmpdir"
|
||
|
|
then
|
||
|
|
echo -e "Unable to create $tmpdir Directory."
|
||
|
|
exit 1
|
||
|
|
fi
|
||
|
|
|
||
|
|
# Get the vif line in the config file
|
||
|
|
DISKIMAGE=`grep "disk = " $DESTCONFIG`
|
||
|
|
# extract everything between the square brackets
|
||
|
|
DISKIMAGE=${DISKIMAGE#*[}
|
||
|
|
DISKIMAGE=${DISKIMAGE%*]}
|
||
|
|
# extract the first entry that is a file
|
||
|
|
DISKIMAGE=${DISKIMAGE#*file:*}
|
||
|
|
# remove the end of the entry
|
||
|
|
DISKIMAGE=${DISKIMAGE%,w*}
|
||
|
|
# using the comma as delimiter, get the second field (this script assumes that the first file entry is the boot disk!)
|
||
|
|
DISKIMAGE=`echo "$DISKIMAGE" | cut -f2 -d\,`
|
||
|
|
|
||
|
|
# Get the vif line in the config file
|
||
|
|
PARTITION=`grep "bootentry = " $DESTCONFIG`
|
||
|
|
# using the single quotes as delimiters, extract the data
|
||
|
|
PARTITION=`echo "$PARTITION" | cut -f2 -d\'`
|
||
|
|
# using the comma as delimiter, extra the boot partition information
|
||
|
|
PARTITION=`echo "$PARTITION" | cut -f1 -d\,`
|
||
|
|
PARTITION=${PARTITION%:*}
|
||
|
|
PARTITION=${PARTITION#$DISKIMAGE*}
|
||
|
|
|
||
|
|
if ! lomount -diskimage "$DESTXEN$DISKIMAGE" -partition $PARTITION "$tmpdir"
|
||
|
|
then
|
||
|
|
echo -e "Unable to mount newly copied image $DESTXEN$DISKIMAGE at $tmpdir"
|
||
|
|
exit 1
|
||
|
|
fi
|
||
|
|
############################################################################
|
||
|
|
|
||
|
|
|
||
|
|
############################################################################
|
||
|
|
# Change the Network Configuration in the mounted image file #
|
||
|
|
# #
|
||
|
|
sleep 1
|
||
|
|
pushd "$tmpdir"
|
||
|
|
if [ "$MAC" != "" ]; then
|
||
|
|
echo -e "Changing the Network configuration in the newly copied image."
|
||
|
|
cd "$tmpdir/etc/sysconfig/network/"
|
||
|
|
sleep 1
|
||
|
|
# Make a backup of the old eth config files in ./othether directory
|
||
|
|
if mkdir -pv ./oldether/
|
||
|
|
then
|
||
|
|
cp -fv ifcfg-eth* ./oldether/
|
||
|
|
fi
|
||
|
|
|
||
|
|
# Find the ifcfg-ethMACADDRESS file in the newly copied image
|
||
|
|
ETH0=`ls | grep ifcfg-eth | cut -f1`
|
||
|
|
if [ "$ETH0" = "" ]; then
|
||
|
|
echo -e "Unable to find ethernet file in image file"
|
||
|
|
exit 1
|
||
|
|
fi
|
||
|
|
# Rename the file to ifcfg-eth0 (if it has not already been done.
|
||
|
|
# Then delete all the other config files
|
||
|
|
if [ "$ETH0" != "ifcfg-eth0" ]; then
|
||
|
|
if mv -f "$ETH0" ifcfg-eth0
|
||
|
|
then
|
||
|
|
rm -fv ifcfg-eth-id*
|
||
|
|
fi
|
||
|
|
fi
|
||
|
|
|
||
|
|
# Make sure that the ifcfg-eth0 file exists, since everything depends on it!
|
||
|
|
if [ ! -f "ifcfg-eth0" ]; then
|
||
|
|
echo -e "Unable to create /etc/sysconfig/network/ifcfg-eth0 file!"
|
||
|
|
exit 1
|
||
|
|
fi
|
||
|
|
|
||
|
|
# The 30-net_persistent_names.rules file controls which interface to use.
|
||
|
|
# Be removing the SUBSYSTEM line, we force the system to recreate it.
|
||
|
|
cd "$tmpdir/etc/udev/rules.d/"
|
||
|
|
cp -fv 30-net_persistent_names.rules 30-net_persistent_names.rules.old
|
||
|
|
grep -v SUBSYSTEM 30-net_persistent_names.rules > 30-net_persistent_names.rules.tmp
|
||
|
|
if ! mv -f 30-net_persistent_names.rules.tmp 30-net_persistent_names.rules
|
||
|
|
then
|
||
|
|
echo -e "Unable to modify the /etc/udev/rules.d/30-net_persistent_names.rules file."
|
||
|
|
exit 1
|
||
|
|
fi
|
||
|
|
fi
|
||
|
|
############################################################################
|
||
|
|
|
||
|
|
|
||
|
|
############################################################################
|
||
|
|
# Change the IP Address in the mounted image file #
|
||
|
|
# #
|
||
|
|
if [ "$IP" != "" ]; then
|
||
|
|
|
||
|
|
echo -e "Modify the IP Address of the new domU."
|
||
|
|
cd "$tmpdir/etc/sysconfig/network/"
|
||
|
|
sleep 1
|
||
|
|
|
||
|
|
# Make sure that the ifcfg-eth0 file exists, since everything depends on it!
|
||
|
|
if [ ! -f "ifcfg-eth0" ]; then
|
||
|
|
echo -e "Unable to find /etc/sysconfig/network/ifcfg-eth0 file!"
|
||
|
|
exit 1
|
||
|
|
fi
|
||
|
|
|
||
|
|
# Make a copy every line of the ifcfg-eth0 file except the IPADDR line.
|
||
|
|
grep -v IPADDR ifcfg-eth0 > ifcfg-eth0.xentmp
|
||
|
|
sleep 1
|
||
|
|
|
||
|
|
# Then add a new IPADDR line with the new IP address
|
||
|
|
echo 'IPADDR="'$IP'"' >> ifcfg-eth0.xentmp
|
||
|
|
sleep 1
|
||
|
|
|
||
|
|
if ! mv ifcfg-eth0.xentmp ifcfg-eth0
|
||
|
|
then
|
||
|
|
echo -e "unable to modify the IP address in /etc/sysconfig/network/ifcfg-eth0"
|
||
|
|
exit 1
|
||
|
|
fi
|
||
|
|
|
||
|
|
fi
|
||
|
|
############################################################################
|
||
|
|
|
||
|
|
|
||
|
|
############################################################################
|
||
|
|
# Change the HOSTNAME and hosts files in the mounted image file #
|
||
|
|
# #
|
||
|
|
if [ "$HOSTNAME" != "" ]; then
|
||
|
|
echo -e "Changing HOSTNAME file to $HOSTNAME."
|
||
|
|
cd "$tmpdir/etc"
|
||
|
|
# using the period as a delimter, select the first column for the hostname
|
||
|
|
oldHOSTNAME=`cat "$tmpdir/etc/HOSTNAME" | cut -f1 -d\.`
|
||
|
|
sleep 1
|
||
|
|
|
||
|
|
if ! replace $oldHOSTNAME $HOSTNAME HOSTNAME
|
||
|
|
then
|
||
|
|
echo -e "Unable to change the HOSTNAME from $oldHOSTNAME to $HOSTNAME"
|
||
|
|
exit 1
|
||
|
|
fi
|
||
|
|
FQDN=`cat HOSTNAME`
|
||
|
|
|
||
|
|
echo -e "Changing hosts file."
|
||
|
|
|
||
|
|
cp -fv hosts hosts.old
|
||
|
|
if grep -v $oldHOSTNAME hosts > hosts.xentmp
|
||
|
|
then
|
||
|
|
echo "$IP\t$FQDN\t$HOSTNAME" >> hosts.xentmp
|
||
|
|
fi
|
||
|
|
|
||
|
|
if [ ! -f hosts.xentmp ]; then
|
||
|
|
echo -e "Unable to change the hosts file"
|
||
|
|
exit 1
|
||
|
|
fi
|
||
|
|
if ! mv -f hosts.xentmp hosts
|
||
|
|
then
|
||
|
|
echo -e "Unable to change the hosts file"
|
||
|
|
exit 1
|
||
|
|
fi
|
||
|
|
fi
|
||
|
|
############################################################################
|
||
|
|
|
||
|
|
|
||
|
|
############################################################################
|
||
|
|
# Umount image file and remove temporary directory #
|
||
|
|
# #
|
||
|
|
popd > /dev/null
|
||
|
|
sleep 1
|
||
|
|
umount "$tmpdir"
|
||
|
|
sleep 1
|
||
|
|
rm -r "$tmpdir"
|
||
|
|
############################################################################
|
||
|
|
fi
|
||
|
|
|
||
|
|
echo -e "Clone is complete. domU $DESTCONFIG is ready to start!"
|
||
|
|
exit 0
|