--- /dev/null
+#!/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
git://git.onelab.eu / util-vserver.git / blobdiff