好久没用过keepalived 以前用的时候也没有做过笔记，基本上都忘的差不多了，今天整理的时候记录一下.

master配置：

global_defs {
   notification_email {
     [email protected]
   }
   notification_email_from [email protected]
   smtp_server 127.0.0.1
   smtp_connect_timeout 30
   router_id LVS_DEVEL
}
#vrrp_sync_group VG_1 {
#group {
#VI_1
#}
#notify_master /usr/local/master.sh
#notify_backup /usr/local/backup.sh
#}
vrrp_script check_running
{
        script /home/check.sh
        interval 8
        weight -10
        fall 2
        rise 2
}
vrrp_instance VI_1
{
    state MASTER
    interface eth0
    virtual_router_id 51
    priority 152
        debug
        nopreempt
    advert_int 3
    preempt_delay 60
    dont_track_primary
     track_interface {
        eth0
        eth1
}
    authentication {
        auth_type PASS
        auth_pass 1111
    }
    virtual_ipaddress {
        172.168.10.200/24
    }
    track_script {
        check_running
        }
notify_master /usr/local/master.sh
notify_backup /usr/local/backup.sh
}


backup配置：

global_defs {
   notification_email {
     [email protected]
   }
   notification_email_from [email protected]
   smtp_server 127.0.0.1
   smtp_connect_timeout 30
   router_id LVS_DEVEL
}
#vrrp_sync_group VG_1 {
#group {
#VI_1
#}
#notify_master /usr/local/master.sh
#notify_backup /usr/local/backup.sh
#}
vrrp_script check_running
{
        script /home/check.sh
        interval 8
        weight -10
        fall 2
        rise 2
}
vrrp_instance VI_1
{
    state BACKUP
    interface eth0
    virtual_router_id 51
    priority 151
        debug
#       nopreempt
     preempt_delay 60
    advert_int 3
 dont_track_primary
     track_interface {
        eth0
        eth1
}      
    authentication {
        auth_type PASS
        auth_pass 1111
    }
    virtual_ipaddress {
        172.168.10.200/24
    }
    track_script {
        check_running
        }
notify_master /usr/local/master.sh
notify_backup /usr/local/backup.sh
}


对与配置文件书写，特别需要注意track_script {之间一定要一个空格符 不然配置会解释错误

master 配置需要有nopreempt参数，避免master恢复后抢占，再贴一下check.sh的脚本内容


#!/bin/bash
ip add list|grep '172.168.10.200/24' || exit 0
count=`ps aux | grep -v grep | grep crond | wc -l`
if [[ $count -eq 0 ]]; then
sleep 1.5
count=`ps aux | grep -v grep | grep crond | wc -l`
[ $count -eq 0 ] &&  exit 1
else
echo $count >> /home/log.txt
exit 0
fi