LVS之NAT脚本

三月阳光

　　

#!/bin/bash
#
# chkconfig: - 88 12
# description: LVS script for LVS/NAT
#
. /etc/rc.d/init.d/functions
#
VIP=192.168.0.219
DIP=192.168.10.10
RIP1=192.168.10.11
RIP2=192.168.10.12
#
case "$1" in
start)           
  /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　　

　　注：此脚本来源于互联网