1、停止mysql服务
2、在mysql日志目录下删除所有的relay logs
3、删除mysqldata目录下所有hostname-relay-bin.XXX, hostname-relay-bin.index and relay-log.info
3、重启mysql服务
4、重新启动主从
mysql> show slave status \G
*************************** 1. row ***************************
Slave_IO_State: Waiting for master to send event
Master_Host: 172.168.3.190
Master_User: slave
Master_Port: 12148
Connect_Retry: 60
Master_Log_File: binlog.000002
Read_Master_Log_Pos: 106
Relay_Log_File: relaybinlog.000002
Relay_Log_Pos: 248
Relay_Master_Log_File: binlog.000002
Slave_IO_Running: Yes
Slave_SQL_Running: Yes
Replicate_Do_DB:
Replicate_Ignore_DB:
Replicate_Do_Table:
Replicate_Ignore_Table:
Replicate_Wild_Do_Table:
Replicate_Wild_Ignore_Table: mysql.%
Last_Errno: 0
Last_Error:
Skip_Counter: 0
Exec_Master_Log_Pos: 106
Relay_Log_Space: 399
Until_Condition: None
Until_Log_File:
Until_Log_Pos: 0
Master_SSL_Allowed: No
Master_SSL_CA_File:
Master_SSL_CA_Path:
Master_SSL_Cert:
Master_SSL_Cipher:
Master_SSL_Key:
Seconds_Behind_Master: 0
Master_SSL_Verify_Server_Cert: No
Last_IO_Errno: 0
Last_IO_Error:
Last_SQL_Errno: 0
Last_SQL_Error:
1 row in set (0.00 sec)