[root@localhost ipvsadm-1.24]# ipvsadm -v
ipvsadm v1.24 2005/12/10 (compiled with popt and IPVS v1.2.0)

echo “======================= 配置keepalived ===========================”
#Funciont: Backup website and mysql database
#Author: Jimmy Li
#Website: http://jimmyli.blog.51cto.com/
#IMPORTANT!!!Please Setting the following Values!
[root@master ~]#    cp /usr/local/etc/rc.d/init.d/keepalived /etc/rc.d/init.d/
[root@master ~]#    cp /usr/local/etc/sysconfig/keepalived /etc/sysconfig/
[root@master ~]#    mkdir /etc/keepalived
[root@master ~]#    cp /usr/local/sbin/keepalived /usr/sbin/
[root@master ~]# vi /etc/keepalived/keepalived.conf
! Configuration File for keepalived
    
global_defs {
     notification_email { 
            jimmyli@jimmyli.blog.51cto.com 
     }
     notification_email_from jimmyli@jimmyli.blog.51cto.com    #http://jimmyli.blog.51cto.com/
     smtp_server jimmyli.blog.51cto.com 
    # smtp_connect_timeout 30
     router_id LVS_DEVEL
}
    
# VIP1
vrrp_instance VI_1 {
        state MASTER                         #备份服务器上将MASTER改为BACKUP        
        interface eth0
        lvs_sync_daemon_inteface eth0
        virtual_router_id 51
        priority 100        # 备份服务上将100改为90
        advert_int 5
        authentication {
                auth_type PASS
                auth_pass 1111
        }
        virtual_ipaddress {
                192.168.9.200        
                #(如果有多个VIP，继续换行填写.)
        }
}
    
virtual_server 192.168.9.200 80 {
        delay_loop 6                                    #(每隔6秒查询realserver状态)
        lb_algo wlc                                    #(lvs 算法)
        lb_kind DR                                    #(Direct Route)
        persistence_timeout 60                #(同一IP的连接60秒内被分配到同一台realserver)
        protocol TCP                                #(用TCP协议检查realserver状态)
    
        real_server 192.168.9.203 80 {
                weight 100                             #(权重)
                TCP_CHECK {
                connect_timeout 10             #(10秒无响应超时)
                nb_get_retry 3
                delay_before_retry 3
                connect_port 80
                }
        }
        real_server 192.168.9.204 80 {
                weight 100
                TCP_CHECK {
                connect_timeout 10
                nb_get_retry 3
                delay_before_retry 3
                connect_port 80
                }
         }
}
[root@master ~]#    service keepalived start|stop
[root@master ~]# chkconfig –level 2345 keepalived on
echo “====================== 配置realserver =========================”
#Funciont: Backup website and mysql database
#Author: Jimmy Li
#Website: http://jimmyli.blog.51cto.com/
#IMPORTANT!!!Please Setting the following Values!
[root@web_1 ~]# vi /root/lvs_real.sh
#!/bin/bash
#http://jimmyli.blog.51cto.com/
#Config realserver
SNS_VIP=192.168.9.200
    
/etc/rc.d/init.d/functions
    
case "$1" in
start)
             /sbin/ifconfig lo:0 $SNS_VIP netmask 255.255.255.255 broadcast $SNS_VIP
             /sbin/route add -host $SNS_VIP dev 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
             sysctl -p >/dev/null 2>&1
             echo "RealServer Start OK"
    
             ;;
stop)
             /sbin/ifconfig lo:0 down
             /sbin/route del $SNS_VIP >/dev/null 2>&1
             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_announce
             echo "RealServer Stoped"
             ;;
*)
             echo "Usage: $0 {start|stop}"
             exit 1
esac
    
exit 0
[root@web_1 ~]# chmod +x /roo/lvs_real.sh
[root@web_1 ~]# /root/lvs_real.sh start
[root@web_1 ~]# ifconfig
    
[root@web_1 ~]# echo “/root/lvs_real.sh start” >> /etc/rc.local

echo “===================== 测试LVS+keepalived ========================”
#LVS_master、LVS_backup上开启keepalived，LVS_master先绑定VIP
#http://jimmyli.blog.51cto.com/
LVS_master：
    
LVS_backup：