1. mysql> show slave status\G;
2. *************************** 1. row ***************************
3. Slave_IO_State: Waiting for master to send event
4. Master_Host: 192.168.8.22
5. Master_User: repl
6. Master_Port: 3306
7. Connect_Retry: 10
8. Master_Log_File: mysql-bin.000015
9. Read_Master_Log_Pos: 107
10. Relay_Log_File: vm02-relay-bin.000025
11. Relay_Log_Pos: 253
12. Relay_Master_Log_File: mysql-bin.000015
13. Slave_IO_Running: Yes
14. Slave_SQL_Running: Yes
15. Replicate_Do_DB:
16. Replicate_Ignore_DB:
17. Replicate_Do_Table:
18. Replicate_Ignore_Table:
19. Replicate_Wild_Do_Table:
20. Replicate_Wild_Ignore_Table:
21. Last_Errno: 0
22. Last_Error:
23. Skip_Counter: 0
24. Exec_Master_Log_Pos: 107
25. Relay_Log_Space: 554
26. Until_Condition: None
27. Until_Log_File:
28. Until_Log_Pos: 0
29. Master_SSL_Allowed: No
30. Master_SSL_CA_File:
31. Master_SSL_CA_Path:
32. Master_SSL_Cert:
33. Master_SSL_Cipher:
34. Master_SSL_Key:
35. Seconds_Behind_Master: 0
36. Master_SSL_Verify_Server_Cert: No
37. Last_IO_Errno: 0
38. Last_IO_Error:
39. Last_SQL_Errno: 0
40. Last_SQL_Error:
41. Replicate_Ignore_Server_Ids:
42. Master_Server_Id: 22
43. 1 row in set (0.03 sec)
44.
45.ERROR:
46. No query specified
現在由於業務的需要，不需要這臺Slave同步複製Master，那麼採用reset slave時，你會發現同步信息還存在，如： 1. mysql> stop slave;
2. Query OK, 0 rows affected (0.19 sec) 3.
4. mysql> reset slave;
5. Query OK, 0 rows affected (0.17 sec) 6.
7. mysql> show slave status\G;
8. *************************** 1. row *************************** 9. Slave_IO_State:
10. Master_Host: 192.168.8.22 11. Master_User: repl 12. Master_Port: 3306 13. Connect_Retry: 10 14. Master_Log_File: 15. Read_Master_Log_Pos: 4
16. Relay_Log_File: vm02-relay-bin.000001 17. Relay_Log_Pos: 4 18. Relay_Master_Log_File: 19. Slave_IO_Running: No 20. Slave_SQL_Running: No 21. Replicate_Do_DB: 22. Replicate_Ignore_DB: 23. Replicate_Do_Table: 24. Replicate_Ignore_Table: 25. Replicate_Wild_Do_Table: 26. Replicate_Wild_Ignore_Table: 27. Last_Errno: 0 28. Last_Error: 29. Skip_Counter: 0 30. Exec_Master_Log_Pos: 0 31. Relay_Log_Space: 126 32. Until_Condition: None 33. Until_Log_File: 34. Until_Log_Pos: 0 35. Master_SSL_Allowed: No 36. Master_SSL_CA_File: 37. Master_SSL_CA_Path: 38. Master_SSL_Cert: 39. Master_SSL_Cipher: 40. Master_SSL_Key: 41. Seconds_Behind_Master: NULL 42. Master_SSL_Verify_Server_Cert: No 43. Last_IO_Errno: 0 44. Last_IO_Error: 45.
Last_SQL_Errno: 0
46. Last_SQL_Error:
47. Replicate_Ignore_Server_Ids:
48. Master_Server_Id: 22
49. 1 row in set (0.02 sec)
50.
51. ERROR:52. No query specified
執行reset slave，其實是把master.info和relay-log.info文件給刪除，但裏面的同步信息還在，那麼可以用這個方法，讓其清除的徹徹底底。
1. mysql> reset slave all;
2. Query OK, 0 rows affected (0.04 sec) 3.4. mysql> show slave status\G; 5. Empty set (0.02 sec) 6.
7. ERROR:
8. No query specified
注：此語句支持在MySQL5.5或更高版本。
