mysqlfailover problem (no replies)

i use mysqlfailover problem

Binary Log File Position Binlog_Do_DB Binlog_Ignore_DB
mysql-bin.000011 194

GTID Executed Set
c3d59355-81d1-11e5-87ec-00163e006461:1-9

# Attempting to contact 112.123.332.21 ... Success
# Attempting to contact 12.32.53.2 ... Success
Replication Health Status
0 Rows Found.
Q-quit R-refresh H-health G-GTID Lists U-UUIDs L-log entries Up|Down-scroll

it connect to 101.200.237.4 success,but Replication Health Status 0 Rows Found.
when i shutdown master,it report
Failed to reconnect to the master after 3 attemps.
ERROR: Master has failed and automatic failover is not enabled. Check server for errors and run the mysqlrpladmin utility to perform manual failover.

what is automatic failover is not enabled? why Replication Health Status
0 Rows Found. please help me