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|
#!/bin/bash
rsyncOptions='-vxcaHAX'
rsync --may-modify-others 2>&1 | \
grep -q 'unknown option' ||
rsyncOptions="${rsyncOptions} --may-modify-others"
[ -r "#ETCDIR#/backup.conf" ] && \
. "#ETCDIR#/backup.conf"
usage()
{
>&2 echo \
'Usage: backup /tmp/pidFile /path/to/destination/ user@source:path [proxy_user@ssh_host]
Backup files from remote with rsync, possibly via SSH-tunnel.
With no arguments, information is expected to be in array $backups in #ETCDIR#/backup.conf with name of executable (e.g. a symlink) as key.
Options:
/tmp/pidFile location of file to store PID in
/path/to/destination location to store backups in
user@source:path remote data to back up
proxy_user@ssh_host ssh login to proxy node (optional)
#HELPTEXT# #'
[ -z "$1" ] && exit 1
exit $1
}
if [ $# -eq 1 ]
then
if [ "$1" == "--help" ]
then
usage 0
elif [ "$1" == "--version" ]
then
echo '#VERSION#'
exit
fi
fi
if [ $# -eq 0 ]
then
backupID="$(basename $0)"
[ -z "${backups[${backupID}]}" ] && usage
set /tmp/${backupID}.pid ${backups[${backupID}]}
fi
Basis="$2"
pidFile="$1"
QuellIP=$(echo "$3" | sed "s|^[a-zA-Z]*://||; s|^[a-zA-Z]*@||; s|:\?/.*$||")
if [ "$#" -eq 3 ]
then
Quelle="$3"
elif [ "$#" -eq 4 ]
then
sshHopp="$4"
lokPort=$[$RANDOM/2+8000]
rsyncShell="-e ssh -p${lokPort} -o StrictHostKeyChecking=no -o UserKnownHostsFile=/dev/null"
tunnelBefehl="ssh -t -t -L${lokPort}:${QuellIP}:22 ${sshHopp}"
HoppIP="${sshHopp#*@}"
Quelle="$(echo "$3" | sed "s|${QuellIP}|127.0.0.1|")"
else
usage
fi
ping -c1 ${QuellIP} > /dev/null || exit 11
if [ -n "${HoppIP}" ]
then
ping -c1 ${HoppIP} > /dev/null || exit 11
fi
if [ ! -d ${Basis} ]
then
[ $(mount | grep -c "\S\+\s\+\S\+\s\+/var/ftp\s") -eq 0 ] && exit 11
exit 2
fi
neues_Datum=${Basis}/$(date "+%Y_%m_%d")
neues=${Basis}/aktuell
linkdests=""
for s in $(ls -1tr ${Basis} | grep -v aktuell | tail -n20 )
do
linkdests="${linkdests} --link-dest ${Basis}/${s}"
done
if [ ! "$(whoami)" == "root" ]
then
echo "I need to be root."
exit 3
fi
[ -w ${Basis} ] || exit 11
[ -e ${neues_Datum} ] && exit 4
[ -e ${pidFile} ] && exit 5
echo $$ > ${pidFile}
if [ -n "${tunnelBefehl}" ]
then
${tunnelBefehl} &
backgroundPid=$!
sleep 4
fi
for toExclude in "${excludes[@]}"
do
excludeArgs="${excludeArgs} --exclude ${toExclude}"
done
if [ ! -e ${neues} ]
then
mkdir ${neues}
fi
chmod 750 ${neues}
chown root:root ${neues}
if [ -z "${rsyncShell}" ]
then
rsync ${rsyncOptions} \
${linkdests} \
${excludeArgs} \
${Quelle} ${neues}/
sleep 1
rsync ${Quelle}
else
rsync "${rsyncShell}" \
${rsyncOptions} \
${linkdests} \
${excludeArgs} \
${Quelle} ${neues}/
sleep 1
rsync "${rsyncShell}" ${Quelle}
fi
erg=$?
[ -n "${backgroundPid}" ] && kill ${backgroundPid}
if [ ${erg} -eq 0 ] || [ ${erg} -eq 24 ]
then
mv ${neues} ${neues_Datum}
rm ${pidFile}
else
rm ${pidFile}
exit 11
fi
|
