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在lvs的nat模式的基础上
1.清空ipvsadm规则
ipvsadm -C
查看
ipvsadm -ln
2.清空iptables规则
iptables -t nat -F
3.修改rs的网卡配置,修改回来网关
vi /etc/sysconfig/network-scripts/ifcfg-eth0
重启eth0
ifdown eth0; ifup eth0
4.dir网卡
ifdown eth1
dirIP:192.168.1.118 rs1IP:192.168.1.116 rs2IP:192.168.1.115 都视为外网IP。
在dir上面添加虚拟IP,vip
vim /usr/local/sbin/lvs_dr.sh
#! /bin/bash echo 1 > /proc/sys/net/ipv4/ip_forward ipv=/sbin/ipvsadm vip=192.168.1.100 rs1=192.168.1.116 rs2=192.168.1.115 ifconfig eth0:0 $vip broadcast $vip netmask 255.255.255.255 up route add -host $vip dev eth0:0 $ipv -C $ipv -A -t $vip:80 -s rr $ipv -a -t $vip:80 -r $rs1:80 -g -w 1 $ipv -a -t $vip:80 -r $rs2:80 -g -w 1
echo 1 > /proc/sys/net/ipv4/ip_forward //打开端口转发
ipv=/sbin/ipvsadm
vip=192.168.1.100
rs1=192.168.1.116
rs2=192.168.1.115
ifconfig eth0:0 $vip broadcast $vip netmask 255.255.255.255 up //VIP子网掩码是4个255,只发不收
route add -host $vip dev eth0:0 //增加一条路由
$ipv -C
$ipv -A -t $vip:80 -s rr
$ipv -a -t $vip:80 -r $rs1:80 -g -w 1
$ipv -a -t $vip:80 -r $rs2:80 -g -w 1
sh !$
ifconfig 虚拟网卡已经出来了 eth0:0 Link encap:Ethernet HWaddr 00:0C:29:CC:11:E7 inet addr:192.168.1.100 Bcast:192.168.1.100 Mask:255.255.255.255 UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
ipvsadm -ln 多出来一个VIP IP Virtual Server version 1.2.1 (size=4096) Prot LocalAddress:Port Scheduler Flags -> RemoteAddress:Port Forward Weight ActiveConn InActConn TCP 192.168.1.100:80 rr -> 192.168.1.115:80 Route 1 0 0 -> 192.168.1.116:80 Route 1 0 0
5.rs1-2都写个脚本
vim /usr/local/sbin/lvs_rs.sh
#! /bin/bash vip=192.168.1.100 ifconfig lo:0 $vip broadcast $vip netmask 255.255.255.255 up route add -host $vip 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
ifconfig 启动了回环虚拟网卡 lo:0 Link encap:Local Loopback inet addr:192.168.1.100 Mask:255.255.255.255 UP LOOPBACK RUNNING MTU:16436 Metric:1
6.测试
在第四台机器上curl vip
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原文地址:http://www.cnblogs.com/wangshaojun/p/5153648.html