一、环境：

redhat5.4、keepalived-1.1.17、nginx-1.0.6
主nginx负载均衡器：192.168.0.10
辅nginx负载均衡器：192.168.9.20
vip：192.168.0.100

二、keepalived部署

1.下载最新稳定版 wget http://www.keepalived.org/software/keepalived-1.1.17.tar.gz

2.安装keepalived

tar zxvf keepalived-1.1.17.tar.gz
cd keepalived-1.1.17
./configure –prefix=/usr/local/keepalive
make ; make install

cp /usr/local/keepalived/sbin/keepalived /usr/sbin/
cp /usr/local/keepalived/etc/rc.d/init.d/keepalived /etc/init.d/

3.配置keepalived

#master配置
mkdir /etc/keepalived
vim /etc/keepalived/keepalived.conf

global_defs {
smtp_server 127.0.0.1
smtp_connect_timeout 30
router_id LVS_DEVEL
}
vrrp_instance VI_1 {
state MASTER
interface eth0
virtual_router_id 51
#backup ipaddress
mcast_src_ip 192.168.0.20
priority 100
advert_int 1
authentication {
auth_type PASS
auth_pass ufsoft
}
virtual_ipaddress {
192.168.0.100
}
}

#backup配置
mkdir /etc/keepalived
vim /etc/keepalived/keepalived.conf

global_defs {
smtp_server 127.0.0.1
smtp_connect_timeout 30
router_id LVS_DEVEL
}
vrrp_instance VI_1 {
state BACKUP
interface eth0
virtual_router_id 51
#master ipaddress
mcast_src_ip 192.168.0.10
priority 50
advert_int 1
authentication {
auth_type PASS
auth_pass ufsoft
}
virtual_ipaddress {
192.168.0.100
}
}

通过命令：#ip a 来检查
启动keepalived：
keepalived -f /etc/keepalived/keepalived.conf -D
//-f指定了keepalived的配置文件位置
三、nginx部署

参考文档《nginx+tomcat集群+session复制》。