Shell脚本实战23-LVS客户端配置脚本

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1. 需求

请在LVS客户端节点上，开发LVS客户端设置VIP及抑制ARP的管理脚本。

实现：/etc/init.d/lvsclient {start|stop|restart}

2. 参考脚本

脚本如下：

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#!/bin/bash
REVTAR=0
VIP=(
	 10.0.0.3
	 10.0.0.4
	 )
. /etc/init.d/functions
case "$1" in
	start)
		for ((i=0; i<`echo ${#VIP[*]}`; i++))
		do
			interface="lo:`echo ${VIP[$i]} | awk -F . '{print $4}'`"
			/sbin/ip addr add ${VIP[$i]}/24 dev lo label $interface
			REVTAR=$?
		done
		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_annouce
		if [ $REVTAR -eq 0 ]
		then
			action "Start LVS Config of RearServer." /bin/true
		else
			action "Start LVS Config og RearServer." /bin/false
		fi
		;;
	stop)
		for ((i=0; i<`echo ${#VIP[*]}`; i++))
		do
			interface="lo:`echo ${VIP[$i]} | awk -F . '{print $4}'`"
			/sbin/ip addr del ${VIP[$i]}/24 dev lo label $interface > /dev/null 2>&1
		done
		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_annouce
		if [ $REVTAR -eq 0 ]
		then
			action "Close LVS Config of RearServer." /bin/true
		else
			action "Close LVS Config of RearServer." /bin/false
		fi
		;;
	*)
		echo "Usage: $0 {start|stop}"
		exit 1
esac
exit $REVTAR

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