cat >> /etc/init.d/realserver << EOF
#!/bin/bash
VIP=10.40.200.190
source /etc/rc.d/init.d/functions
case "\$1" in
start)
ifconfig lo:0 \${VIP} netmask 255.255.255.255 broadcast \${VIP}
/sbin/route add -host \${VIP} dev lo:0
echo "1" >/proc/sys/net/ipv4/conf/lo/arp_ignore
echo "2" >/proc/sys/net/ipv4/conf/lo/arp_announce
echo "1" >/proc/sys/net/ipv4/conf/all/arp_ignore
echo "2" >/proc/sys/net/ipv4/conf/all/arp_announce
sysctl -p >/dev/null 2>&1
echo "Real Server Start OK"
;;
stop)
ifconfig lo:0 down
route del \${VIP} > /dev/null 2>&1
echo "0" > /proc/sys/net/ipv4/conf/lo/arp_ignore
echo "0" > /proc/sys/net/ipv4/conf/lo/arp_announce
echo "0" > /proc/sys/net/ipv4/conf/all/arp_ignore
echo "0" > /proc/sys/net/ipv4/conf/all/arp_announce
echo "Real Server Stoped"
;;
*)
echo "Usage: \$0 {start|stop}"
exit 1
esac
exit 0
EOF
yum install keepalived -y
systemctl start keepalived
systemctl enable keepalived
cd /etc/keepalived
mv keepalived.conf keepalived.conf.bak
touch keepalived.conf