WEIGHT=2

#!/bin/sh
#echo "Starting up pppd $1 $2 $3 $4 $5 $6"
table=`/usr/bin/perl -e '\$ARGV[0] =~ /ppp(\d)/ and print \$1+200' $1`
/sbin/ip route add 0.0.0.0/0 table $table dev $1
/sbin/ip rule add from $4 table $table
/sbin/ip rule add from $4 to 10.0.0.0/8 table main
exec /etc/ppp/ip-lb-up.local $1

#!/bin/sh
echo "Starting up load balancing for $1." >> /var/log/ppp.local.log
#get weight for this connection.
if [ -e "/etc/ppp/$1-weight.conf" ] ; then
. /etc/ppp/$1-weight.conf
else
WEIGHT=1
fi
#Get current list of default route.
DEFRT=`ip route list match 0/0`
echo "Current default routes:" >> /var/log/ppp.local.log
echo $DEFRT >> /var/log/ppp.local.log
#No default route, add it.
if [ "$DEFRT" == "" ] ; then
ip route add default dev $1
echo "weight $WEIGHT" > /etc/ppp/default-weight
exit;
fi
#Check if the dev is in route?
echo "$DEFRT" | grep $1
if [ $? == 0 ] ; then
echo "$1 is in route already" >> /var/log/ppp.local.log
exit;
fi
#Check if the default route is multiple already
echo "$DEFRT" | grep 'nexthop'
if [ $? == 1 ] ; then
OLDWEIGHT=`cat /etc/ppp/default-weight`
DEFRT=`echo "$DEFRT" | sed 's/default/default nexthop/'`
DEFRT="$DEFRT $OLDWEIGHT"
fi
#remove invalid options
DEFRT=`echo "$DEFRT" | sed 's/\n//g' | sed 's/proto static//g' | sed 's/scope link//g'`
ip route replace $DEFRT nexthop dev $1 weight $WEIGHT 2>> /var/log/ppp.local.log
#Save default route for restore later.
ip route list match 0/0 > /etc/ppp/default-lb-routes
echo "Done." >> /var/log/ppp.local.log

#!/bin/sh
#echo "Shutting down pppd $1 $2 $3 $4 $5 $6"
table=`/usr/bin/perl -e '\$ARGV[0] =~ /ppp(\d)/ and print \$1+200' $1`
/sbin/ip route del 0.0.0.0/0 table $table dev $1
/sbin/ip rule del from $4 table $table
/sbin/ip rule del from $4 to 10.0.0.0/8 table main
exec /etc/ppp/ip-lb-down.local $1

#!/bin/sh
echo "Stopping load balancing for $1." >> /var/log/ppp.local.log
echo "LB-Routes:" >> /var/log/ppp.local.log
cat /etc/ppp/default-lb-routes >> /var/log/ppp.local.log
#Save default route for restore later.
grep -v "$1" /etc/ppp/default-lb-routes > /tmp/routes
DEFRT=`cat /tmp/routes`
cp -f /tmp/routes /etc/ppp/default-lb-routes
echo "Removed LB-Routes:" >> /var/log/ppp.local.log
echo $DEFRT >> /var/log/ppp.local.log
#No default route, remove the file.
if [ "$DEFRT" == "" ] ; then
echo "No entry in default-lb-routes"
rm -f /etc/ppp/default-lb-routes
exit;
fi
#remove invalid options
DEFRT=`echo "$DEFRT" | sed 's/\n//g' | sed 's/proto static//g' | sed 's/scope link//g'`
if [ "$DEFRT" != "" ] ; then
#Re-add the routes.
#ip route del default
ip route replace $DEFRT 2>> /var/log/ppp.local.log
fi
echo "Stop done." >> /var/log/ppp.local.log

# Load-balanced IPs for DB writes and reads
#
frontend db_write
bind 172.16.0.50:3306
default_backend cluster_db_write
frontend db_read
bind 172.16.0.51:3306
default_backend cluster_db_read

# ls -l /bin/su
-rwsr-xr-x 1 root root 34904 Nov 3 18:43 /bin/su