X-Git-Url: http://git.onelab.eu/?a=blobdiff_plain;f=scripts%2Flegacy%2Fvserver-copy;fp=scripts%2Flegacy%2Fvserver-copy;h=d7b968fcfb9a3c9c3231fa30754323616821703f;hb=8cf13bb177d92c93eb73dc8939777150536c2d00;hp=0000000000000000000000000000000000000000;hpb=6bf3f95de36c804c97716b2d0bdf10680c559044;p=util-vserver.git

diff --git a/scripts/legacy/vserver-copy b/scripts/legacy/vserver-copy
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+#!/bin/bash
+
+# Copyright (C) 2003 Enrico Scholz <enrico.scholz@informatik.tu-chemnitz.de>
+# based on vserver-copy by Mark Lawrence <nomad@null.net>
+#  
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 2, or (at your option)
+# any later version.
+#  
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#  
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write to the Free Software
+# Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+
+# Copy/Sync a virtual host from one machine to another
+#
+# History:
+#
+# 2003-04-04: Version 0.4 - Mark lawrence
+# - Set "ONBOOT=no" in the destination .conf file when --startstop
+#   is not used, in case the destination roothost reboots. We don't
+#   want two copies of a vserver running at the same time.
+#
+# 2003-03-04: Version 0.3 - Mark lawrence
+# - Changed all checks for [ "" != "$var" ] into [ -n|-z "$var" ]. "" doesn't
+#   seem to work for bash on the Sparc architecture.
+# - Changed $ssh variable into $shcmd.
+#
+# 2003-02-23: Version 0.2 - Mark Lawrence
+# - Set ONBOOT to "no" in the original .conf file when the "-s" flag is 
+#   used so that if/when you reboot the source roothost you don't have the
+#   same vserver and IP address running on two machines.
+
+: ${UTIL_VSERVER_VARS:=/usr/lib/util-vserver/util-vserver-vars}
+test -e "$UTIL_VSERVER_VARS" || {
+    echo $"Can not find util-vserver installation (the file '$UTIL_VSERVER_VARS' would be expected); aborting..." >&2
+    exit 1
+}
+. "$UTIL_VSERVER_VARS"
+
+VERSION="0.4"
+umask 022
+me=${0##*/}
+
+
+### Helper functions ###
+
+# Save stdin and stdout for later use
+exec 3>&1
+exec 4>&2
+
+noninteractive () {
+	exec &> /dev/null
+}
+
+interactive () {
+	exec 1>&3
+	exec 2>&4
+}
+
+info () {
+	! $quiet && echo "I: $me: $1" >&3
+}
+
+warn () {
+	! $quiet && echo "W: $me: $1" >&4
+}
+
+error () {
+	! $quiet && echo "E: $me: $2" >&4
+	exit $1
+}
+
+
+### Usage/Info functions ###
+
+usage () {
+    cat <<EOF 1>&2
+Usage:	$me [-hVvqidrRs] vserver newname
+	$me [-hVvqidrRs] vserver host:[newname]
+EOF
+}
+
+full_usage () {
+	usage
+        cat <<EOF
+
+$me uses rsync to make a copy of a vserver. If the destination
+name contains a host specification the vserver will be synchronised to
+the remote destination over ssh/rsh.
+
+This can be used on a running vserver to make a warm backup. With the -s
+flag a vserver can even be operationally moved to different hardware within
+seconds.
+
+The -i and -d flags can be used to minimally reconfigure the destination
+vserver (rewrites /etc/vservers/newname.conf and $__DEFAULT_VSERVERDIR/newname/etc/hosts)
+
+Options:
+	-h, --help		this help
+	-V, --version		copyright and version information
+	-v, --verbose		show all output
+	-q, --quiet		direct all output to /dev/null (no password
+				prompt for logins on remote hosts!)
+	-d, --domain [string]	new dns domain (must be used with -i)
+	-i, --ip [addr]		new IP address (must be used with -d)
+	-r, --vsroot		location of "/vserver/" directory
+	-R, --rsh		use rsh (instead of default ssh) for
+				network transport
+	-s, --stopstart		stop the local vserver before copying and start
+				it on the destination host afterwards
+
+EOF
+}
+
+full_version () {
+    cat <<EOF
+$me version $VERSION
+Copyright (c) 2002 Mark Lawrence   <nomad@null.net>
+
+This program is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation; either version 2 of the License, or (at
+your option) any later version.
+
+EOF
+}
+
+
+### Default values and Command line options ###
+
+stopstart=(false)
+verbose=(false)
+quiet=(false)
+shcmd="ssh"
+rsflag="-e"
+rsh=(false)
+colon=":"
+domain=""
+ip=""
+vsroot=$__DEFAULT_VSERVERDIR
+
+if [ $# -eq 0 ]; then  # Script invoked with no command-line args?
+	usage
+	exit 1
+fi  
+
+temp=$(getopt -o hVvqd:i:rRs --long help,version,verbose,quiet,domain:,ip:,vsroot,rsh,stopstart, -n $me -- "$@")
+
+if [ $? -ne 0 ]; then
+	echo "	(See -h for help)"
+        exit 1
+fi
+
+# Note the quotes around `$temp': they are essential!
+eval set -- "$temp"
+
+while true; do
+        case "$1" in
+		-h|--help)	full_usage
+				exit 1
+				;;
+		-V|--version)	full_version
+				exit 1
+				;;
+		-v|--verbose)	verbose=(true)
+				shift
+				;;
+		-q|--quiet)	quiet=(true)
+				shift
+				;;
+		-d|--domain)	domain="$2"
+				shift 2
+				;;
+		-i|--ip)	ip="$2"
+				shift 2
+				;;
+		-r|--vsroot)	vsroot="$2"
+				shift 2
+				;;
+		-R|--rsh)	rsh=(true)
+				shift
+				;;
+		-s|--stopstart)	stopstart=(true)
+				shift
+				;;
+                --)             shift
+				break
+				;;
+		*)		echo "Internal error!"
+				exit 1
+				;;
+	esac
+done
+
+if [ $# -ne 2 ]; then
+	usage
+	exit 1
+fi
+
+
+### ###
+
+# By default we are reasonably quiet (ouput only via info, warn & error)
+if $verbose; then
+	interactive
+else
+	noninteractive
+fi
+
+now=$(date)
+info "called on $(hostname) at $now"
+
+
+vserver=$1
+vconf=/etc/vservers/$vserver.conf
+vroot=$vsroot/$vserver
+
+if $rsh; then
+	shcmd="rsh"
+fi
+
+if (echo $2 | grep '^[a-z][a-z0-9]\+$'); then
+	dhost=""
+	newname=$2
+	shcmd=""
+	rsflag=""
+	colon=""
+	if $rsh; then
+		warn "rsh is set but not used for a local copy"
+	fi
+elif (echo $2 | grep '^[a-z].*[a-z0-9]:$'); then
+	dhost=${2/:/}
+	newname=$vserver
+elif (echo $2 | grep '^[a-z].*[a-z0-9]:[a-z].*[a-z0-9]$'); then
+	dhost=${2/:*/}
+	newname=${2/*:/}
+else
+	error 1 "Second argument must be of the form \"[host:]name\" or \"host:\""
+fi
+
+target=$vsroot/$newname
+targetconf=/etc/vservers/$newname.conf
+
+
+### Perform some sanity checks ###
+
+if [ ! -d $vroot ]; then
+	error 1 "Directory \"$vroot\" does not exist"
+fi
+
+if [ ! -e $vconf ]; then
+	error 1 "Vserver file \"$vconf\" does not exist"
+fi
+
+if [ -z "$dhost" ] && [ "$vserver" == "$newname" ]; then
+	error 1 "Source and destination names cannot be the same on the localhost"
+fi
+
+if [ -n "$dhost" ] && ! (host $dhost | grep 'has address'); then
+	warn "$dhost does not resolve into an IP address"
+fi
+
+if [ \( -n "$ip" -a -z "$domain" \) -o \
+     \( -z "$ip" -a -n "$domain" \) ]
+then
+	error 1 "Both IP address and domain must be specified together"
+fi
+
+if [ -n "$ip" ] && \
+! (echo $ip | grep '^[0-9]\{1,3\}\(\.[0-9]\{1,3\}\)\{3\}$' ); then
+	error 1 "\"$ip\" is not a valid IP address"
+fi
+
+# This works both locally and remote
+if ($shcmd $dhost $__SBINDIR/vserver $newname running | grep 'is running'); then
+	warn "destination vserver \"$newname\" is running" 
+	error 1 "Cannot copy over a running vserver"
+fi
+
+
+### Do the copy ###
+
+info "Attempting to copy $vserver to $dhost$colon$newname"
+
+if $stopstart; then
+	info "Stopping virtual server \"$vserver\" on localhost"
+	$__SBINDIR/vserver $vserver stop
+fi
+
+info "Syncing directories"
+# trailing slashes very important in the rsync!
+if ! rsync -avxz $rsflag $shcmd $vroot/ $dhost$colon$target/; then
+	error 1 "rsync failed"
+fi
+
+if [ -n "$ip" -a -n "$domain" ]; then
+	# Insert the new IPROOT/S_HOSTNAME values into the config file
+	info "Modifying $targetconf"
+	tmpf=$(tempfile)
+	if (sed -e "s/^S_HOSTNAME=.*/S_HOSTNAME=\"$newname\"/" \
+		-e "s/^IPROOT=.*/IPROOT=\"$ip\"/" $vconf > $tmpf)
+	then
+		if ! rsync -v $rsflag $shcmd $tmpf $dhost$colon$targetconf; then
+			error $? "vserver config file copy/change failed"
+		fi
+
+	else
+		warn "Unable to reconfigure virtual server config file"
+	fi
+
+	# create a new /etc/hostname
+	info "Creating hostname file"
+	echo $newname > $tmpf
+	if ! rsync -v $rsflag $shcmd $tmpf $dhost$colon$target/etc/hostname; then
+		error 1 "vserver /etc/hostname copy failed"
+	fi
+
+	info "Creating /etc/hosts"
+	cat << EOF > $tmpf
+# /etc/hosts (automatically generated by $me)
+
+127.0.0.1       localhost
+$ip	$newname.$domain	$newname
+
+# The following lines are desirable for IPv6 capable hosts
+
+::1     ip6-localhost ip6-loopback
+fe00::0 ip6-localnet
+ff00::0 ip6-mcastprefix
+ff02::1 ip6-allnodes
+ff02::2 ip6-allrouters
+ff02::3 ip6-allhosts
+EOF
+
+	# copy /etc/hosts
+	if ! rsync -v $rsflag $shcmd $tmpf $dhost$colon$target/etc/hosts; then
+		error 1 "vserver /etc/hosts copy failed"
+	fi
+	rm -f $tmpf
+
+else
+	if ! $stopstart; then
+		# Make sure that this vserver doesn't start on the 
+		# destination host if it reboots
+		tmpf=$(tempfile)
+		sed -e 's/^ONBOOT=.*/ONBOOT=no/' $vconf > $tmpf
+		vconf=$tmpf
+	fi
+
+	# copy newname.conf unchanged
+	info "Copying $targetconf"
+	if ! rsync -v $rsflag $shcmd $vconf $dhost$colon$targetconf; then
+		error 1 "vserver config file copy/change failed"
+	fi
+
+	rm -f $tmpf
+fi
+
+
+if $stopstart; then
+	info "Starting virtual server \"$vserver\" on $dhost"
+	$shcmd $dhost $__SBINDIR/vserver $vserver start
+	if ($shcmd $dhost $__SBINDIR/vserver $vserver running | \
+	grep 'not running'); then
+		error 1 "Virtual server \"$vserver\" failed to start on $dhost"
+	fi
+
+	# Make sure that we don't start the original on next boot
+	tmpf=$(tempfile)
+	sed -e 's/^ONBOOT=.*/ONBOOT=no/' $vconf > $tmpf
+	mv $tmpf $vconf
+fi
+
+exit 0