一、准备环境
在DR 模式的集群中,LVS 负载调度器作为群集的访问入口，但不作为网关使用，服务池中所有节点都各自接入Internet， 发送给客户机的web响应数据包不需要经过lvs负载调度器。
二、配置负载调度器
（1）配置虚拟IP地址
Eth0:192.168.10.254
Eth0:0 192.168.10.100
cd /etc/sysconfig/network-scripts/
cp ifcfg-eth0 ifcfg-eth0:0
vi ifcfg-eth0:0
BOOTPROTO=static
DEVICE="eth0:0"
ONBOOT="yes"
IPADDR=192.168.10.183
NETMASK=255.255.255.0
(2)调整/proc响应参数
net.ipv4.conf.all.send_redirects=0
net.ipv4.conf.default.send_redirects=0
net.ipv4.conf.eth0.send_redirects=0
net.ipv4.conf.eth1.send_redirects=0
sysctl –p
(3)配置负载分配策略
Service ipvsadm stop
Ipvsadm –A –t 192.168.10.183:80 –s rr
Ipvsadm –a –t 192.168.10.183:80 –r 192.168.10.22 –g –w 1
Ipvsadm –a –t 192.168.10.183:80 –r 192.168.10.28 –g –w 1
Service ipvsadm save
Chkconfig ipvsadm on
二、配置节点服务器
Cd /etc/sysconfig/network-scripts
Cp ifcfg-lo ifcfg-lo:0
Vi ifcfg-lo:0
DEVICE=lo:0
IPADDR=192.168.10.183
NETMASK=255.255.255.255
ONBOOT=yes
Vi /etc/rc.local
sbin/route add -host 172.16.11.183 dev lo:0
~ [root@host1 ~]# route add -host 192.168.10.183 dev lo:0
(2)调整/proc响应参数
net.ipv4.conf.all.arp_ignore=1
net.ipv4.conf.all.arp_announce=2
net.ipv4.conf.default.arp_ignore=1
net.ipv4.conf.default.arp_announce=2
net.ipv4.conf.lo.arp_ignore=1
net.ipv4.conf.lo.arp_announce=2
sysctl –p
service httpd restart
