Archives pour juillet, 2012

Squid : purger un objet du cache

La commande squidclient permet de manipuler le cache de squid. Il faut y spécifier l’adresse IP et le port d’écoute de squid, la méthode PURGE pour purger le cache de l’objet spécifié par son URL d’accès :

Exemple dans le cas d’un reverse-proxy :

squidclient -h 127.0.0.1 -p 80 -m PURGE http://www.site.fr/blabla.xml

BackupPC : script de suppression des backups

#!/bin/sh
#
#this script contributed by Matthias Meyer
#note that if your $Topdir seems to be wrong (because it is empty), the script will ask you
#the new location.
#
#10/2009 JJK: Modified by Jeffrey J. Kosowsky
#    add --nightly
#    check if user eguals root or backuppc
#11/2009 MMT: Modified by Matthias Meyer
#    add --remove
#
#10/2010 MMT: Modified by Matthias Meyer
#    check /etc/backuppc as well as /etc/BackupPC
#
#07/2012 HB: Modified by Boris HUISGEN
#    fix run_BackupPC_nightly to detect install/bin directories

usage="\
Usage: $0 [-c <client> [-d <backupnumber> -b <before data> -r [-f]] | [-l]] | [-n]

Delete specified client backups.

Options:
-c <client>    - client machine for which the backup was made
-d <number>    - number of Backup which should be deleted
-b <date>    - delete all backups before this date (YYYY-MM-DD)
-r        - remove the entire client
-f        - force to run Backuppc_nightly so the space got free afterwards
-n        - only run Backuppc_nightly
-l        - list the backups which made for <client>
-n        - Just run BackupPC_nightly (even if no backups deleted)
-h        - this help
"
declare -i len        # try "typeset" instead declare if you have problems
declare TopDir LogDir    # directories, evaluated by /etc/backuppc/config.pl
declare configDir

function run_BackupPC_nightly ()
{
installdir=`grep $Conf{InstallDir} $configDir/config.pl | awk '{print $3}'`
len=${#installdir}-3
installdir=${installdir:1:len}
path=$installdir/bin
if [ ! -e $path/BackupPC_serverMesg ]; then path="/usr/share/BackupPC/bin"; fi
echo "Running BackupPC_nightly..."
$path/BackupPC_serverMesg BackupPC_nightly run
$path/BackupPC_serverMesg log I honestly apologize for the inconvenience
echo `date "+%Y-%m-%d %T"` BackupPC_deleteBackup BackupPC_nightly politely scheduled via daemon >> $LogDir/LOG
}

#JJK: NOTE NFS shares may only be accessible by 'backuppc' (not even by root if not 'no_root_squash') so run as user 'backuppc'
[ "`id -un`" != "backuppc" -a "`id -un`" != "root" ] && echo "Must be either 'root' or 'backuppc' to run" && exit
[ "`id -un`" != "backuppc" ] && exec su backuppc -s /bin/bash -c "$0 $*"

while test $# -gt 0; do
case "$1" in
-c | --client )
shift; client=`echo $1 | tr "[:upper:]" "[:lower:]"`; shift;;
-b | --before )
shift; bDate=$1; shift;;
-d | --delete )
shift; bNumber=$1; shift;;
-r | --remove )
entire="true"; shift;;
-f | --force )
nightly="true"; shift;;
-n | --nightly )
nightlyonly="true"; shift;;
-l | --list )
list="true"; shift;;
* | -h | --help)
echo "$usage"
exit 0
;;
esac
done

if [ -z $nightlyonly ] && ( [ -z "$client" ] || [ -z $list ] && [ -z $bNumber ] && [ -z $bDate ] && [ -z $entire ] )
then
echo "$usage"
exit 0
fi

if [ -e /etc/backuppc/config.pl ]; then configDir="/etc/backuppc"
elif [ -e /etc/BackupPC/config.pl ]; then configDir="/etc/BackupPC"
else
echo "BackupPCs config.pl not found"
exit 1
fi

TopDir=`grep '^\$Conf{TopDir}' $configDir/config.pl | awk '{print $3}'`
len=${#TopDir}-3
TopDir=${TopDir:1:len}

ls $TopDir/pc > /dev/null 2>&1
while [ $? != 0 ]
do
read -p "examined $TopDir seems wrong. What is TopDir ? " TopDir
ls $TopDir/pc > /dev/null 2>&1
done

LogDir=`grep '^\$Conf{LogDir}' $configDir/config.pl | awk '{print $3}'`
len=${#LogDir}-3
LogDir=${LogDir:1:len}
if [ ! -e $LogDir/LOG ]; then LogDir="$TopDir/log"; fi

if [ ! -z $nightlyonly ]
then
run_BackupPC_nightly
exit 0
elif [ ! -z $entire ]
then
# the entire host should be removed. Therefore we will remove him
# from the host list as well as his client configuration
while read CLine
do
host=`echo $CLine | awk '{print $1}' | tr "[:upper:]" "[:lower:]"`
if [ "$host" != "$client" ]
then
echo "$CLine" >> $configDir/hosts.new
fi
done < $configDir/hosts
chown --reference=$configDir/hosts $configDir/hosts.new
chmod --reference=$configDir/hosts $configDir/hosts.new
mv $configDir/hosts.new $configDir/hosts > /dev/null 2>&1
rm -f $configDir/$client.pl* > /dev/null 2>&1
fi

ls $TopDir/pc/$client > /dev/null 2>&1
if [ $? != 0 ]
then
echo "$client have no backups"
exit 1
fi

if [ ! -z $list ]
then
while read CLine
do
BackupNumber=`echo $CLine | awk '{print $1}'`
BackupType=`echo $CLine | awk '{print $2}'`
BackupTime=`stat -c "%y" $TopDir/pc/$client/$BackupNumber/backupInfo | awk '{print $1}'`
echo "BackupNumber $BackupNumber - $BackupType-Backup from $BackupTime"
done < $TopDir/pc/$client/backups
exit 0
fi

if [ ! -z $bNumber ] && [ ! -e $TopDir/pc/$client/$bNumber ]
then
echo "Backup Number $bNumber does not exist for client $client"
exit 1
fi

if [ -z $entire ] && [ -e $TopDir/pc/$client/backups ]
then
delete2full="false"
rm -f $TopDir/pc/$client/backups.new > /dev/null 2>&1
touch $TopDir/pc/$client/backups.new
while read CLine
do
BackupNumber=`echo $CLine | awk '{print $1}'`
BackupTime=`stat -c "%y" $TopDir/pc/$client/$BackupNumber/backupInfo | awk '{print $1}'`
BackupType=`echo $CLine | awk '{print $2}'`
if [ $BackupType == "full" ]
then
delete2full="false"
fi
if [ "$BackupTime" \< "$bDate" ] || [ $BackupNumber == "$bNumber" ] || [ $delete2full == "true" ]
then
if [ $BackupType == "full" ]
then
if [ $delete2full == "false" ]
then
delete2full="true"
else
delete2full="false"
fi
fi
bNumber=$BackupNumber
echo "remove $TopDir/pc/$client/$bNumber"
rm -fr $TopDir/pc/$client/$bNumber > /dev/null 2>&1
rm -f $TopDir/pc/$client/XferLOG.$bNumber > /dev/null 2>&1
rm -f $TopDir/pc/$client/XferLOG.$bNumber.z > /dev/null 2>&1
echo "`date +\"%Y-%m-%d %T\"` BackupPC_deleteBackup $TopDir/pc/$client/$bNumber deleted" >> $LogDir/LOG
echo "`date +\"%Y-%m-%d %T\"` BackupPC_deleteBackup remove backup $bNumber" >> $TopDir/pc/$client/LOG.`date +%m%Y`
fi
if [ "$BackupNumber" != "$bNumber" ]
then
echo "$CLine" >> $TopDir/pc/$client/backups.new
fi
done < $TopDir/pc/$client/backups
chown --reference=$TopDir/pc/$client/backups $TopDir/pc/$client/backups.new > /dev/null 2>&1
chmod --reference=$TopDir/pc/$client/backups $TopDir/pc/$client/backups.new > /dev/null 2>&1
mv $TopDir/pc/$client/backups.new $TopDir/pc/$client/backups > /dev/null 2>&1
echo "`date +\"%Y-%m-%d %T\"` BackupPC_deleteBackup $TopDir/pc/$client/backups updated" >> $LogDir/LOG
elif [ ! -z $entire ]
then
rm -fr $TopDir/pc/$client > /dev/null 2>&1
echo "`date +\"%Y-%m-%d %T\"` BackupPC_deleteBackup $TopDir/pc/$client entirely removed" >> $LogDir/LOG
fi
if [ ! -z $nightly ]
then
run_BackupPC_nightly
fi

exit $?

Exemple de suppression de la sauvegarde n°400 du client host1 avec nettoyage du pool :

carl # ./BackupPC_delete -c host1 -d 400 -f
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