集群 之 LVS
LVS集群常用的模式有三种，LVS-DR为最常用的一种，但有时LVS-NAT模式也会用到；该实验为NAT模式配置仅实现负载均衡，高可用不再配置
三台服务器：
Directorserver：
eth0：192.168.70.135
eth1：192.168.132.130
Real server1：eth0：192.168.132.128
Real server2：eth0 ：192.168.132.129
1.配置Realserver1
# nl /var/www/jiang/zhu.html
1
2My name is192.168.70.136
3
# route add default gw 192.168.132.130 #添加路由，网关为Director的内网ip地址
# route -n
Kernel IP routing table
Destination Gateway Genmask Flags Metric Ref Use Iface
192.168.132.0 0.0.0.0 255.255.255.0 U 0 0 0 eth0
169.254.0.0 0.0.0.0 255.255.0.0 U 0 0 0 eth0
0.0.0.0 192.168.132.130 0.0.0.0 UG 0 0 0 eth0
2.配置Realserver2
# nl /var/www/jiang/zhu.html
1
2192.168.70.137 is my name
3
# route add default gw 192.168.132.130
# route -n
Kernel IP routing table
Destination Gateway Genmask Flags Metric Ref Use Iface
192.168.132.0 0.0.0.0 255.255.255.0 U 0 0 0 eth0
169.254.0.0 0.0.0.0 255.255.0.0 U 0 0 0 eth0
0.0.0.0 192.168.132.130 0.0.0.0 UG 0 0 0 eth0 3.配置Director server
# ifconfig eth0:0 192.168.70.99
# ipvsadm -A -t 192.168.70.99:80-s rr
# ipvsadm -a -t 192.168.70.99:80 -r 192.168.132.128 -m
# ipvsadm -a -t 192.168.70.99:80 -r 192.168.132.129 -m
# ipvsadm -L -n
IP Virtual Server version 1.2.1 (size=4096)
Prot LocalAddress:Port Scheduler Flags
-> RemoteAddress:Port Forward Weight ActiveConn InActConn
TCP192.168.70.99:80 rr
-> 192.168.132.129:80 Masq 1 0 0
-> 192.168.132.128:80 Masq 1 0 0
4.访问测试：
http://blog.运维网.com/attachment/201309/164650283.jpg
http://blog.运维网.com/attachment/201309/164726365.jpg
负载均衡实现完成
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