一、安裝必要的軟體包，以保證nginx和keepalived能安裝：
yum -y install gcc gcc-c++ make
yum -y install pcre-devel #安裝nginx的依賴軟體包
yum -y install openssl-devel #安裝keepalived依賴軟體包
yum -y install popt-devel #安裝keepalived依賴軟體包
二、安裝nginx
tar -zxf nginx-1.2.8.tar.gz
./configure --prefix=/etc/local/nginx
make && make install
測試安裝成功
三、安裝keepalived-1.2.0
wget
（wget
tar -zxf keepalived-1.2.0.tar.gz
cd keepalived-1.2.0
./configure --prefix=/usr/local/keepalived
錯誤：use ipvs framework 、 ipvs sync daemon support兩個必須為yes，才算編譯成功
四、複製檔案：
1、ln -s /usr/local/keepalived/etc/keepalived /etc/keepalived
2、ln -s /usr/local/keepalived/etc/rc.d/init.d/keepalived
/etc/rc.d/init.d/keepalived
3、ln -s /usr/local/keepalived/etc/sysconfig/keepalived/etc/sysconfig/keepalived
4、ln -s /usr/local/keepalived/sbin/keepalived /usr/bin/keepalived
5、chkconfig keepalived on
五、配置master配置檔案：
vi /etc/keepalived/keepalived.conf
! configuration file for keepalived
global_defs
notification_email_from [email protected] #設定郵件的傳送位址
smtp_server 127.0.0.1 #設定smtp server位址
smtp_connect_timeout 30 #設定連線smtp server的超時時間
router_id lvs_devel #表示執行keepalived伺服器的乙個標識。發郵件時顯示在郵件主題的資訊
}vrrp_script chk_nginx
vrrp_instance vi_1
virtual_ipaddress
track_script
}六、配置backup配置檔案：
vi /etc/keepalived/keepalived.conf
! configuration file for keepalived
global_defs
notification_email_from [email protected]
smtp_server 127.0.0.1
smtp_connect_timeout 30
router_id lvs_devel
}vrrp_script chk_nginx
vrrp_instance vi_1
virtual_ipaddress
track_script
}七、指令碼編寫：
vi /usr/local/keepalived/sbin/check_nginx.sh
#!/bin/bash
if [ "$(ps -ef | grep "nginx: master process"| grep -v grep )" == ""
];then
#echo 1
/etc/init.d/nginx start
sleep 5
if [ "$(ps -ef | grep "nginx: master process"| grep -v grep )" == ""
];then
/etc/init.d/keepalived stop
#echo 2
fifi
八、給指令碼執行許可權
chmod +x /usr/local/keepalived/sbin/check_nginx.sh
九、測試
service keepalived start #啟動nginx-master
service keepalived start #啟動nginx-backup
ip addr #2臺伺服器分別執行，繫結虛擬ip在nginx-master
service keepalived stop #停止nginx-backup
ip addr #2臺伺服器分別執行，繫結虛擬ip在nginx-backup
service keepalived start #再啟動nginx-backup
ip addr #2臺伺服器分別執行，繫結虛擬ip在nginx-master
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