keepalive笔记之二:keepalive+nginx（自定义脚本实现，上述例子也可以实现）

! Configuration File for keepalived

global_defs {

   notification_email {

     acassen@firewall.loc

     failover@firewall.loc

     sysadmin@firewall.loc

   }

   notification_email_from Alexandre.Cassen@firewall.loc

   smtp_server 192.168.200.1

   smtp_connect_timeout

   router_id LVS_DEVEL

}

vrrp_script check_80 {                         //定义vrrp脚本

   script '/root/check_code.py'               //脚本路径

   interval                                    //脚本检测时间间隔,脚本必须在间隔时间内返回状态,不然日志报错

//Keepalived_vrrp[7813]: Process [7894] didn't respond to SIGTERM

   weight -                                    //当脚本返回的状态码不是0时,操作权重

}

vrrp_instance VI_1 {

    state MASTER

    interface eth0

    virtual_router_id

    priority

    advert_int

    authentication {

        auth_type PASS

        auth_pass

    }

    virtual_ipaddress {

        192.168.89.100

    }

    track_script {                       //定义监控脚本

    check_80

    }

}

使用的脚本：/root/check_code.py

（该脚本检查http的状态吗，如果不是200，则关闭keepalive服务，使VIP漂移到备份机上）

#!/usr/bin/env python

import urllib2

import os

url = 'http://192.168.89.81/index.html'

try:

    check_code = urllib2.urlopen(url,timeout=).code

except Exception,e:

    print e

    check_code =

print check_code

if check_code == :

    pass

else:

    os.system('service keepalived stop')