slave stop;
drop table if exists t1,t2,t3,t4,t5,t6,t7,t8,t9;
reset master;
reset slave;
drop table if exists t1,t2,t3,t4,t5,t6,t7,t8,t9;
slave start;
drop table if exists t1;
create table t1 (n int);
reset master;
stop slave;
change master to master_port=SLAVE_PORT;
show slave status;
Master_Host	Master_User	Master_Port	Connect_retry	Master_Log_File	Read_Master_Log_Pos	Relay_Log_File	Relay_Log_Pos	Relay_Master_Log_File	Slave_IO_Running	Slave_SQL_Running	Replicate_do_db	Replicate_ignore_db	Last_errno	Last_error	Skip_counter	Exec_master_log_pos	Relay_log_space
127.0.0.1	root	SLAVE_PORT	1		4	slave-relay-bin.001	4		No	No			0		0	0	#
start slave;
insert into t1 values (1);
show status like "slave_running";
Variable_name	Value
Slave_running	ON
select * from t1;
n
1
drop table t1;