[root@dir ~]# ipvsadm -C
[root@dir ~]# ifconfig eth0:0 down

cd /usr/local/src
wget  http://www.keepalived.org/software/keepalived-1.2.6.tar.gz
tar zxf keepalived-1.2.6.tar.gz 
cd keepalived-1.2.6
./configure --prefix=/usr/local/keepalived 
make
make install

! Configuration File for keepalived
global_defs {
   notification_email {
      lihuiyw@jd.com   
}
   notification_email_from lihuiyw@jd.com
   smtp_server mail.jd.com
   smtp_connect_timeout 30
   router_id LVS_DEVEL
}
vrrp_script check_alive
{
        script "/export/sh/check_nginx_alive.sh"
        # check every 2 seconds
        interval 2
        # if failed, decrease 10 of the priority
        weight -10
        # require 2 failures for failures
        fail 2
        # require 1 sucesses for ok
        rise 1
}
vrrp_instance VIP_${routerid}
{
	state $role
	interface $interface
	virtual_router_id $routerid
	priority $weight
	advert_int 2 
	garp_master_delay 10
	smtp_alert
	authentication
	{
		auth_type PASS 
		auth_pass 123456
	}
	virtual_ipaddress
	{ 
		${vip}/24
	}
	track_interface 
	{
		$interface
	} 
	track_script
	{ 
		check_alive 
	}
}