LVS+keepalived+MYSQL 双机主备下备机 telnet 不通 VIP的 3306端口

双机主备: LVS+keepalived+MYSQL 高可用方案
方案：
两台机器，都安装MYSQL和keepalived，一台机器做主keepalived，一台备keepalived，mysql为主主同步，两台机器的mysql连接同一个虚拟IP（配置文件在
最下方）
说明：
正常情况下虚拟VIP绑定到主机上，当主机MYSQL挂了之后，keepalived检查到mysql挂了则执行脚本check_mysql.sh，脚本执行会关闭主机keepalived进程，
此时VIP自动漂移到备机上
问题：
在Red Hat Enterprise Linux Server release 6.7 (Santiago)版本上如下配置，一切正常，主备机器的都能telnet通VIP地址 +3306端口，而且mysql挂了之
后，该服务器的keepalived自动检查mysql状态，然后执行脚本check_mysql.sh
但是在系统Red Hat Enterprise Linux Server release 7.2版本下，其他配置都一样，备机就不能 telnet通VIP地址 +3306端口，即不能通过虚拟IP连接到
mysql服务，但是却能ping通VIP地址；然后我用另一台同一网段的没有安装keepalived的服务器 telnet通VIP地址 +3306端口，也是能通。 
解决：
有人通过注释掉备机的virtual_server中的两个参数后可以telnet通VIP地址 +3306端口
      #lb_algo wrr                                                           
      #lb_kind DR 
验证：   
我注释两个参数后，备机的确能 telnet通VIP地址 +3306端口，但是又出现另外的问题，即当mysql挂了之后，该服务器的keepalived自动检查mysql状态，发
现mysql挂了之后正常情况下应该执行脚本check_mysql.sh，但是实际上却不执行这个脚本。查看系统日志如下
系统日志如下：
Feb  9 19:49:02 SZC-L0040683 Keepalived_healthcheckers[59739]: TCP connection to [30.16.10.135]:3306 failed.
Feb  9 19:49:05 SZC-L0040683 Keepalived_healthcheckers[59739]: TCP connection to [30.16.10.135]:3306 failed.
Feb  9 19:49:05 SZC-L0040683 Keepalived_healthcheckers[59739]: Check on service [30.16.10.135]:3306 failed after 1 retry.
Feb  9 19:49:05 SZC-L0040683 Keepalived_healthcheckers[59739]: Removing service [30.16.10.135]:3306 from VS [30.16.11.54]:3306
Feb  9 19:49:05 SZC-L0040683 Keepalived_healthcheckers[59739]: IPVS: Service not defined
Feb  9 19:49:05 SZC-L0040683 Keepalived_healthcheckers[59739]: Remote SMTP server [127.0.0.1]:25 connected.
Feb  9 19:49:05 SZC-L0040683 Keepalived_healthcheckers[59739]: SMTP alert successfully sent.
Feb  9 19:49:07 SZC-L0040683 Keepalived_healthcheckers[59739]: TCP connection to [30.16.10.135]:3306 failed.
Feb  9 19:49:10 SZC-L0040683 Keepalived_healthcheckers[59739]: TCP connection to [30.16.10.135]:3306 failed.
Feb  9 19:49:10 SZC-L0040683 Keepalived_healthcheckers[59739]: Check on service [30.16.10.135]:3306 failed after 1 retry.
Feb  9 19:49:10 SZC-L0040683 Keepalived_healthcheckers[59739]: Removing service [30.16.10.135]:3306 from VS [30.16.11.54]:3306
Feb  9 19:49:10 SZC-L0040683 Keepalived_healthcheckers[59739]: IPVS: Service not defined
Feb  9 19:49:10 SZC-L0040683 Keepalived_healthcheckers[59739]: Remote SMTP server [127.0.0.1]:25 connected.
Feb  9 19:49:10 SZC-L0040683 Keepalived_healthcheckers[59739]: SMTP alert successfully sent.
Feb  9 19:49:12 SZC-L0040683 Keepalived_healthcheckers[59739]: TCP connection to [30.16.10.135]:3306 failed.
Feb  9 19:49:15 SZC-L0040683 Keepalived_healthcheckers[59739]: TCP connection to [30.16.10.135]:3306 failed.
Feb  9 19:49:15 SZC-L0040683 Keepalived_healthcheckers[59739]: Check on service [30.16.10.135]:3306 failed after 1 retry.
Feb  9 19:49:15 SZC-L0040683 Keepalived_healthcheckers[59739]: Removing service [30.16.10.135]:3306 from VS [30.16.11.54]:3306
折腾了几天还是不行，谁有成功的配置，求指教。
以下是环境和配置：
1：操作系统版本：Red Hat Enterprise Linux Server release 7.2 (Maipo)
2：keepalived版本：keepalived-1.2.24
3:mysql版本：MySQL-server-5.6.21
安装完ipv，mysql，keepalive
真实ip
主 IP：30.16.10.130
备 IP: 30.16.10.135
虚拟IP:
30.16.10.200
问题：
1：
KEEPALIVED配置如下：
主：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_skip_check_adv_addr                                                    
     vrrp_strict                                                                 
     vrrp_garp_interval 0                                                        
     vrrp_gna_interval 0                                                         
  }                                                                                 
  vrrp_instance VI_1 {                                                           
      state MASTER                                                               
      interface eth0                                                             
      virtual_router_id 11                                                       
      priority 100                                                               
      advert_int 1                                                               
      authentication {                                                           
          auth_type PASS                                                         
          auth_pass 1111                                                         
      }                                                                          
      virtual_ipaddress {                                                        
          30.16.10.200                                                          
      }                                                                          
  }                                                                                                                                                             
  virtual_server 30.16.10.200 3306 {                                              
       delay_loop 2                                                              
       lb_algo wrr   #LV                                                         
       lb_kind DR    #LV                                                         
       persistence_timeout 60                                                    
       protocol TCP                                                              
       real_server 30.16.10.130 3306 {                                           
          weight 1                                                               
          notify_down /root/check_mysql.sh    
          TCP_CHECK {                                                            
                connect_timeout 10                                               
                nb_get_retry 3                                                   
                delay_before_retry 3                                             
                connect_port 3306                                                
          }                                                                      
      }                                                                          
  }                                                                              
备：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_skip_check_adv_addr                                                    
     vrrp_strict                                                                 
     vrrp_garp_interval 0                                                        
     vrrp_gna_interval 0                                                         
  }                                                                   
  vrrp_instance VI_1 {        
      state BACKUP 
      virtual_router_id 11              
      priority 90                                                     
      advert_int 1                                                    
      authentication {                                          
          auth_type PASS          
          auth_pass 1111                                                         
      }                                                                          
      virtual_ipaddress {                                            
          30.16.10.200                                                     
      }                                                               
  }                                                                                                                                                        
  virtual_server 30.16.10.200 3306 {                                              
       delay_loop 2                                                              
       lb_algo wrr   #LV                                                         
       lb_kind DR    #LV                                                         
       persistence_timeout 60                                                    
       protocol TCP                                                              
       real_server 30.16.10.130 3306 {                                           
          weight 1              
          notify_down /root/check_mysql.sh 
          TCP_CHECK {                         
                connect_timeout 10                                               
                nb_get_retry 3                                 
                delay_before_retry 3                                     
                connect_port 3306                                     
          }  
      }                                                                   
  }