LVS中如何实现NAT脚本

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#!/bin/bash## chkconfig: - 88 12# description: LVS script for LVS/NAT#. /etc/rc.d/init.d/functions#VIP=192.168.0.219DIP=192.168.10.10RIP1=192.168.10.11RIP2=192.168.10.12#case "$1" instart)             /sbin/ifconfig eth0:1 $VIP netmask 255.255.255.0 up# Since this is the Director we must be able to forward packets  echo 1 > /proc/sys/net/ipv4/ip_forward# Clear all iptables rules.  /sbin/iptables -F# Reset iptables counters.  /sbin/iptables -Z# Clear all ipvsadm rules/services.  /sbin/ipvsadm -C# Add an IP virtual service for VIP 192.168.0.219 port 80# In this recipe, we will use the round-robin scheduling method. # In production, however, you should use a weighted, dynamic scheduling method.   /sbin/ipvsadm -A -t $VIP:80 -s rr# Now direct packets for this VIP to# the real server IP (RIP) inside the cluster  /sbin/ipvsadm -a -t $VIP:80 -r $RIP1 -m  /sbin/ipvsadm -a -t $VIP:80 -r $RIP2 -m    /bin/touch /var/lock/subsys/ipvsadm.lock;;stop)# Stop forwarding packets  echo 0 > /proc/sys/net/ipv4/ip_forward# Reset ipvsadm  /sbin/ipvsadm -C# Bring down the VIP interface  ifconfig eth0:1 down    rm -rf /var/lock/subsys/ipvsadm.lock;;status)  [ -e /var/lock/subsys/ipvsadm.lock ] && echo "ipvs is running..." || echo "ipvsadm is stopped...";;*)  echo "Usage: $0 {start|stop}";;esac

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