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#!/bin/bash
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#!/bin/bash
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# $Id: alcasar-load_balancing.sh 2454 2017-12-09 18:59:31Z tom.houdayer $
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# $Id: alcasar-load_balancing.sh 2474 2017-12-30 02:00:04Z tom.houdayer $
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# Generic Load balancer for multiple WAN links - version 1.1 (04 Feb 2011)
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# Generic Load balancer for multiple WAN links - version 1.1 (04 Feb 2011)
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# (c) 2011 Pau Oliva Fora - http://pof.eslack.org
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# (c) 2011 Pau Oliva Fora - http://pof.eslack.org
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#
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#
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# Licensed under GPLv3 - for full terms see:
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# Licensed under GPLv3 - for full terms see:
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# MAIN PARAMETERs Configuration
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# MAIN PARAMETERs Configuration
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###############################
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###############################
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DIR_ETC="/usr/local/etc"
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DIR_ETC="/usr/local/etc"
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CONF_FILE="$DIR_ETC/alcasar.conf"
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CONF_FILE="$DIR_ETC/alcasar.conf"
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MULTIWAN=`grep MULTIWAN= $CONF_FILE|cut -d"=" -f2`
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MULTIWAN=`grep ^MULTIWAN= $CONF_FILE|cut -d"=" -f2`
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MULTIWAN=${MULTIWAN:=off}
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MULTIWAN=${MULTIWAN:=off}
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FAILOVER=`grep FAILOVER= $CONF_FILE|cut -d"=" -f2`
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FAILOVER=`grep ^FAILOVER= $CONF_FILE|cut -d"=" -f2`
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FAILOVER=${FAILOVER:=30}
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FAILOVER=${FAILOVER:=30}
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EXTIF=`grep ^EXTIF= $CONF_FILE|cut -d"=" -f2`				# INTernal InterFace
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EXTIF=`grep ^EXTIF= $CONF_FILE|cut -d"=" -f2`				# INTernal InterFace
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# space separated list of public IPs to ping in watchdog mode
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# space separated list of public IPs to ping in watchdog mode
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CONF_FILE="/usr/local/etc/alcasar.conf"
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CONF_FILE="/usr/local/etc/alcasar.conf"
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# Virtual interfaces creating
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# Virtual interfaces creating
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function create_eth () {
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function create_eth () {
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	routecmd="ip route replace default scope global"
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	routecmd="ip route replace default scope global"
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	NBIFACE=`grep "^WAN" $CONF_FILE | wc -l`	# Nbre interfaces virtuelles
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	NBIFACE=`grep "^WAN=" $CONF_FILE | wc -l`	# Nbre interfaces virtuelles
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	i=0
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	i=0
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	while [ $i -le $NBIFACE ]
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	while [ $i -le $NBIFACE ]
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	do
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	do
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		INT="WAN$i"
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		INT="WAN$i"
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		echo $INT
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		echo $INT
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	# 0 == all links ok, 1 == some link down
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	# 0 == all links ok, 1 == some link down
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	STATE=0
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	STATE=0
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	DOWNCOUNT_BAK=0
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	DOWNCOUNT_BAK=0
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	DOWN_BAK=""
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	DOWN_BAK=""
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	NBIFACE=`grep "^WAN" $CONF_FILE | wc -l`	# Nbre interfaces virtuelles
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	NBIFACE=`grep "^WAN=" $CONF_FILE | wc -l`	# Nbre interfaces virtuelles
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	echo "Nombre interfaces =  "$NBIFACE
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	echo "Nombre interfaces =  "$NBIFACE
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	WANIFACE[0]="$EXTIF"
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	WANIFACE[0]="$EXTIF"
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	c=0
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	c=0
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	while [ $c -le $NBIFACE ]; do
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	while [ $c -le $NBIFACE ]; do
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		ITH=(`grep "WAN$c=" $CONF_FILE | awk -F'"' '{ print $2 }' | awk -F, '{ print $2}'`)	# IFACE
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		ITH=(`grep "^WAN$c=" $CONF_FILE | awk -F'"' '{ print $2 }' | awk -F, '{ print $2}'`)	# IFACE
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		echo $ITH
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		echo $ITH
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		WANIFACE="${WANIFACE} $ITH"
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		WANIFACE="${WANIFACE} $ITH"
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		echo $WANIFACE
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		echo $WANIFACE
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		c=$(($c + 1))
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		c=$(($c + 1))
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	done
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	done