Keepalived的track_script不生效?


Keepalived 里 keepalived.conf配置后，一直不执行track_script  求接？？？配置如下：
主节点148：
------------------------------------------------------------
! Configuration File for keepalivedglobal_defs {
   router_id 192.168.127.148
}
vrrp_script chk_nginx{
    script "/etc/keepalived/nginx_check.sh"
    interval 2
    weight -20
}vrrp_instance VI_1 {
    state MASTER
    interface eth0
    virtual_router_id 51
    mcast_src_ip 192.168.127.148
    priority 100
    nopreempt
    advert_int 1
    authentication {
        auth_type PASS
        auth_pass 1111
    }
    
        
   track_script {
 chk_nginx
   }

    virtual_ipaddress {
        192.168.127.222
   }
}-------------------------------------------------------------备份节点149：
-------------------------------------------------------------
! Configuration File for keepalivedglobal_defs {
   router_id 192.168.127.149
}vrrp_script chk_nginx{
    script "/etc/keepalived/nginx_check.sh"
    interval 2
    weight -20
}
vrrp_instance VI_1 {
    state BACKUP
    interface eth0
    virtual_router_id 51
    mcast_src_ip 192.168.127.149
    priority 90
    nopreempt
    advert_int 1
    authentication {
        auth_type PASS
        auth_pass 1111
    }
        
   track_script {
 chk_nginx
   }

    virtual_ipaddress {
     192.168.127.222
    }
}