stop slave; 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; start slave; STOP SLAVE; Master_Host = '127.0.0.1' (expected '127.0.0.1') CHANGE MASTER TO MASTER_HOST=""; ERROR HY000: Incorrect arguments to MASTER_HOST Master_Host = '127.0.0.1' (expected '127.0.0.1') CHANGE MASTER TO MASTER_HOST="foo"; Master_Host = 'foo' (expected 'foo') CHANGE MASTER TO MASTER_HOST="127.0.0.1"; Master_Host = '127.0.0.1' (expected '127.0.0.1') START SLAVE;