WebSVN – ALCASAR – Diff – /scripts/alcasar-load_balancing.sh

 #!/bin/bash
-# $Id: alcasar-load_balancing.sh 1827 2016-04-19 09:47:29Z raphael.pion $
+# $Id: alcasar-load_balancing.sh 2454 2017-12-09 18:59:31Z tom.houdayer $
 # Generic Load balancer for multiple WAN links - version 1.1 (04 Feb 2011)
 # (c) 2011 Pau Oliva Fora - http://pof.eslack.org
+#
 # Licensed under GPLv3 - for full terms see:
 # CONFIGURATION ENDS HERE
 ###############################
 if [ $(whoami) != "root" ]; then
-        echo "You must be root to run this!" ; echo ; exit 1
+	echo "You must be root to run this!" ; echo ; exit 1
 fi
 # Adapter for ALCASAR project
 CONF_FILE="/usr/local/etc/alcasar.conf"
 			GW=`grep "^GW=" $CONF_FILE | awk -F= '{print $2}'`				# @GW
 #			MTU=`grep "^PUBLIC_MTU=" $CONF_FILE | awk -F= '{print $2}'`			# MTU
 		fi # End
 		NET="`ipcalc -n $IP_NET | cut -d"=" -f2`/`ipcalc -p $IP_NET|cut -d"=" -f2`"
 		if [ "$PARAM" == "add" ]; then
 			set -x
 			table=$(($i + 1))
 			ip route ${PARAM} ${NET} dev ${IFACE} src ${IP} table $table
 			ip route ${PARAM} default via ${GW} table $table
 			ip rule ${PARAM} from ${IP} table $table
 		echo
 		routecmd="${routecmd} nexthop via ${GW} dev ${IFACE} weight ${WT}"
 		i=$(($i + 1))
 	done # End While
 	if [ "$PARAM" == "add" ]; then
 		echo "[] Balanced routing:"
 		# suppress default route
 		ip route del default scope global
 		set -x
 		${routecmd}
 		set +x
 		echo
 	fi
 } # end create_eth
 ###########################
 # Fonction virtual Interfaces deleting
 ###########################
 delete_eth () {
 	IFACE_COUNT=`ls -l /etc/sysconfig/network-scripts/ifcfg-$EXTIF:* | wc -l`
 	echo $IFACE_COUNT
 	while [ $IFACE_COUNT -ne 0 ]
 	do
 		i=$IFACE_COUNT
 		echo "ifdown $EXTIF:$i"
 		ifdown $EXTIF:$i
 		rm -f /etc/sysconfig/network-scripts/ifcfg-$EXTIF:$i
 		IFACE_COUNT=$(($IFACE_COUNT - 1))
 	done
 	ip route del default scope global
 #	ip route add default gw 192.168.1.1
+}
 # do not modify below this line unless you know what you're doing :)
 function getvalue() {
-        index=$1
+	index=$1
-        VAR=$2
+	VAR=$2
-        n=1
+	n=1
-        for f in ${VAR} ; do
+	for f in ${VAR} ; do
-                if [ "${n}" == "${index}" ]; then
+		if [ "${n}" == "${index}" ]; then
-                        echo "$f"
+			echo "$f"
-                        break
+			break
-                fi
+		fi
-                n=$(($n++))
+		n=$(($n++))
-        done
+	done
+}
 ######################
 # Fonction de FailOver
 ######################
 function failover () {
 	echo "[] Watchdog started"
 	# 0 == all links ok, 1 == some link down
 	STATE=0
 	DOWNCOUNT_BAK=0
 	DOWN_BAK=""
 	NBIFACE=`grep "^WAN" $CONF_FILE | wc -l`	# Nbre interfaces virtuelles
 	echo "Nombre interfaces =  "$NBIFACE
 	WANIFACE[0]="$EXTIF"
 		c=$(($c + 1))
 	done
 	echo "Liste des interfaces : "${WANIFACE[*]}
 	# Failover test
 	while : ; do
 		if [ $VERBOSE -eq 1 ]; then
 			echo "[] Sleeping, state=$STATE"
 		fi
 		sleep $FAILOVER
 		IFINDEX=1
 		DOWN=""			# liste des interfaces down
 		DOWNCOUNT=0		# nombre d'interface down
 		for iface in $WANIFACE ; do
 			COUNT=0		# compteur de test
 			if [ $i -ne 0 ]; then
 				GW=`grep "$iface," $CONF_FILE | awk -F'"' '{ print $2 }' | awk -F, '{ print $4}'`		# @GW
 				WT=`grep "$iface," $CONF_FILE | awk -F'"' '{ print $2 }' | awk -F, '{ print $5}'`		# @WT
 			else
 				GW=`grep "^GW=" $CONF_FILE | awk -F= '{print $2}'`			# @GW
 			fi
 			for TESTIP in $TESTIPS ; do
 				COUNT=$(($COUNT + 1))
 				ping -W 3 -I $IP -c 1 $TESTIP > /dev/null 2>&1
 #				ping -W 3 -I $IP -c 1 $TESTIP
 				# Si ping de la première adresse --> ok  --> stop du test pour l'interface testée
 				if [ $? -eq 0 ]; then
 					break
 				else
 					# sinon on compte une erreur
 					FAIL=$(($FAIL + 1))
 				fi
 			done # End of test sur un serveur Internet
 			# Affichage du nombre de down
 			fi
 			IFINDEX=$(($IFINDEX + 1))
 			echo "IFINDEX =$IFINDEX"
 		done # End Test Interface in WANIFACE
 		#  0 Passerelle down et état précédent différent (retour à la normale)) --> mise à la normale des passerelles
 #		if [ $DOWNCOUNT -eq 0 ] && [ $DOWNCOUNT -ne $DOWNCOUNT_BAK ]; then
 		if [ $DOWNCOUNT -eq 0 ] ; then
 			if [ $STATE -eq 1 ]; then
 				echo
 				echo "[] All links up and running :)"
 				for iface in $WANIFACE ; do
 					echo "-------------------------"
 					echo "iface=$iface"
 					echo "Index = " $IFINDEX
 					FAILIF=0
 					# Pour chaque interface down -->
 					echo "Interfaces DOWN = $DOWN"
 					for lnkdwn in $DOWN ; do
 						echo "LINKDOWN = "$lnkdown
 						if [ $lnkdwn -eq $IFINDEX ]; then
 							FAILIF=1
 							break
 						else
 							continue
 						fi
 					done # End linkdown in DOWN
 					# Interface en etat normal --> rajout de la règle en mode nexthop
 						if [ $iface != "$EXTIF" ]; then
 							GW=`grep "$iface," $CONF_FILE | awk -F'"' '{ print $2 }' | awk -F, '{ print $4}'`		# @GW
 							WT=`grep "$iface," $CONF_FILE | awk -F'"' '{ print $2 }' | awk -F, '{ print $5}'`		# @GW
 						else
 							GW=`grep "^GW=" $CONF_FILE | awk -F= '{print $2}'`			# @GW
 						fi
 						echo "GW=$GW"
 						echo "WT=$WT"
 						echo "suffix=$sufix"
 						suffix="${suffix} nexthop via ${GW} dev ${iface} weight ${WT:-1}"
 					fi # End interface = noFAIL
 					IFINDEX=$(($IFINDEX + 1))
 				done # End  iface IN WANIFACE
 				# Commande globale
 				cmd="ip route replace default scope global $suffix"
 				if [ $VERBOSE -eq 1 ]; then
 					set -x
 			#		echo "Avec commentaire : " ${cmd}
 					${cmd}
 					set +x
 					${cmd} 2>/dev/null
 					echo ${cmd}
 				fi # end Application de la commande de routage globale
 			fi #
 			DOWN_BAK=$DOWN	# Enregistrement de l'etat
 		fi # End
 	done
 } # End of Failover
 #################
 echo "[] (c) 2011 Pau Oliva Fora <pof> @eslack.org"
 echo "[] (c) 2013 3abtux ALCASAR  <3abtux> @alcasar.net"
 echo
 case $1 in
 	create)
 		create_eth
 	;;
 	delete)
 		delete_eth
 	;;
 	start)
-                if [ "$MULTIWAN" != "on" ] && [ "$MULTIWAN" != "On" ]; then
+		if [ "$MULTIWAN" != "on" ] && [ "$MULTIWAN" != "On" ]; then
 		    echo "The MultiGateway is not activated !"
 		    exit 0
 		fi
-                PARAM="add"
+		PARAM="add"
-                create_eth
+		create_eth
-                ip route flush cache
+		ip route flush cache
-                if [ $FAILOVER -eq 0 ]; then
+		if [ $FAILOVER -eq 0 ]; then
 		      echo "The MultiWAN Mode is actived but not failover connectivity !"
 		      exit 0
 		fi
-                echo "Starting down $prog: "
+		echo "Starting down $prog: "
-                pid=`pidof -x "alcasar-load_balancing.sh"`
+		pid=`pidof -x "alcasar-load_balancing.sh"`
-                if [ $pid != "" ]; then
+		if [ $pid != "" ]; then
-                        echo $pid > $pidfile
+			echo $pid > $pidfile
-                fi
+		fi
-                touch /var/lock/subsys/alcasar-load_balancing
+		touch /var/lock/subsys/alcasar-load_balancing
-                failover
+		failover
 	;;
 	stop)
 		PARAM="del"
 		echo "Shutting down $prog: "
-                if [ -f $pidfile ]; then
+		if [ -f $pidfile ]; then
-                        pid=`cat $pidfile`
+			pid=`cat $pidfile`
-                        kill -9 $pid
+			kill -9 $pid
-                else
+		else
-                        echo "$prog is not running."
+			echo "$prog is not running."
-                        exit 1
+			exit 1
-                fi
+		fi
-                RETVAL=$?
+		RETVAL=$?
-                echo
+		echo
-                [ $RETVAL -eq 0 ] && rm -f $pidfile && rm -f /var/lock/subsys/alcasar-load_balancing
+		[ $RETVAL -eq 0 ] && rm -f $pidfile && rm -f /var/lock/subsys/alcasar-load_balancing
-                echo "Delete of virtual interfaces"
+		echo "Delete of virtual interfaces"
-                delete_eth
+		delete_eth
-                echo "Network restart"
+		echo "Network restart"
-                service network restart 2>&1 > /dev/null
+		service network restart 2>&1 > /dev/null
-                ip route
+		ip route
 	;;
 	status)
-                echo "Checking  $prog : "
+		echo "Checking  $prog : "
-                if [ -f $pidfile ]; then
+		if [ -f $pidfile ]; then
-                        pid=`cat $pidfile`
+			pid=`cat $pidfile`
-                        CHECK=`ps -p $pid --no-heading | awk {'printf $1'}`
+			CHECK=`ps -p $pid --no-heading | awk {'printf $1'}`
-                        if [ "$CHECK" = "" ]; then
+			if [ "$CHECK" = "" ]; then
-                                echo "$prog is NOT running."
+				echo "$prog is NOT running."
-                        else
+			else
-                                echo "$prog is running !"
+				echo "$prog is running !"
-                        fi
+			fi
-                else
+		else
-                                echo "$prog is Not running."
+				echo "$prog is Not running."
-                fi
+		fi
 	;;
 	fail)
 		failover
 	;;
 	*)
 		echo "Usage: $0 [start|stop|status|create|delete]" ; echo ; exit 1
 	;;
 esac
 exit 0

Subversion Repositories ALCASAR

(root)/scripts/alcasar-load_balancing.sh @ 2454 – Rev 1827 → 2454