如何干净的清除Slave同步信息(亲测可行)
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mysql> show master status;
+------------------+-----------+--------------+------------------+-------------------+
| File | Position | Binlog_Do_DB | Binlog_Ignore_DB | Executed_Gtid_Set |
+------------------+-----------+--------------+------------------+-------------------+
| mysql-bin.000003 | 290903331 | | | |
+------------------+-----------+--------------+------------------+-------------------+
1 row in set (0.00 sec)
mysql> reset master;
Query OK, 0 rows affected (0.28 sec)
mysql> show slave status\G;
*************************** 1. row ***************************
Slave_IO_State: Reconnecting after a failed master event read
Master_Host: xxx.xxx.xxx.xxx
Master_User: slavexxx
Master_Port: 3306
Connect_Retry: 60
Master_Log_File: mysql-bin.000004
Read_Master_Log_Pos: 18841739
Relay_Log_File: local-relay-bin.000022
Relay_Log_Pos: 4799132
Relay_Master_Log_File: mysql-bin.000004
Slave_IO_Running: Connecting
Slave_SQL_Running: Yes
Replicate_Do_DB:
Replicate_Ignore_DB:
Replicate_Do_Table:
Replicate_Ignore_Table:
Replicate_Wild_Do_Table:
Replicate_Wild_Ignore_Table:
Last_Errno: 0
Last_Error:
Skip_Counter: 0
Exec_Master_Log_Pos: 18841739
Relay_Log_Space: 5297368
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: NULL
Master_SSL_Verify_Server_Cert: No
Last_IO_Errno: 2003
Last_IO_Error: error reconnecting to master 'slavexxx@xxx.xxx.xxx.xxx:3306' - retry-time: 60 retries: 938
Last_SQL_Errno: 0
Last_SQL_Error:
Replicate_Ignore_Server_Ids:
Master_Server_Id: 1
Master_UUID: fa8d6da3-a285-11e2-a150-00265518b2bb
Master_Info_File: /mysqldata/master.info
SQL_Delay: 0
SQL_Remaining_Delay: NULL
Slave_SQL_Running_State: Slave has read all relay log; waiting for the slave I/O thread to update it
Master_Retry_Count: 86400
Master_Bind:
Last_IO_Error_Timestamp: 131024 09:31:40
Last_SQL_Error_Timestamp:
Master_SSL_Crl:
Master_SSL_Crlpath:
Retrieved_Gtid_Set:
Executed_Gtid_Set:
Auto_Position: 0
1 row in set (0.00 sec)
ERROR:
No query specified
mysql> stop slave;
Query OK, 0 rows affected (0.06 sec)
mysql> reset slave;
Query OK, 0 rows affected (0.11 sec)
mysql> show slave status\G;
*************************** 1. row ***************************
Slave_IO_State:
Master_Host: xxx.xxx.xxx.xxx
Master_User: slavexxx
Master_Port: 3306
Connect_Retry: 60
Master_Log_File:
Read_Master_Log_Pos: 4
Relay_Log_File: local-relay-bin.000001
Relay_Log_Pos: 4
Relay_Master_Log_File:
Slave_IO_Running: No
Slave_SQL_Running: No
Replicate_Do_DB:
Replicate_Ignore_DB:
Replicate_Do_Table:
Replicate_Ignore_Table:
Replicate_Wild_Do_Table:
Replicate_Wild_Ignore_Table:
Last_Errno: 0
Last_Error:
Skip_Counter: 0
Exec_Master_Log_Pos: 0
Relay_Log_Space: 143
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: NULL
Master_SSL_Verify_Server_Cert: No
Last_IO_Errno: 0
Last_IO_Error:
Last_SQL_Errno: 0
Last_SQL_Error:
Replicate_Ignore_Server_Ids:
Master_Server_Id: 1
Master_UUID: fa8d6da3-a285-11e2-a150-00265518b2bb
Master_Info_File: /mysqldata/master.info
SQL_Delay: 0
SQL_Remaining_Delay: NULL
Slave_SQL_Running_State:
Master_Retry_Count: 86400
Master_Bind:
Last_IO_Error_Timestamp:
Last_SQL_Error_Timestamp:
Master_SSL_Crl:
Master_SSL_Crlpath:
Retrieved_Gtid_Set:
Executed_Gtid_Set:
Auto_Position: 0
1 row in set (0.00 sec)
ERROR:
No query specified
一些同步的信息还在,其实执行reset slave,其实是把master.info和relay-log.info文件给删除,但里面的同步信息还在,那么可以用这个方法,让其清除的彻彻底底。
[root@localhost mysqldata]# ls
auto.cnf dxmonitor dxstatistics ibdata1 ib_logfile1 localhost.err master.info mysql-bin.000001 mysqld_safe.pid relay-log.info test
discoverworkflow dxstatbak faxian.err ib_logfile0 ibtmp1 localhost.pid mysql mysql-bin.index performance_schema similarityanalysis zeus
[root@localhost mysqldata]# ls
auto.cnf dxmonitor dxstatistics ibdata1 ib_logfile1 localhost.err mysql mysql-bin.index performance_schema test
discoverworkflow dxstatbak faxian.err
mysql> reset slave all;
ERROR 2006 (HY000): MySQL server has gone away
No connection. Trying to reconnect...
Connection id: 1227
Current database: *** NONE ***
Query OK, 0 rows affected (0.00 sec)
mysql> show slave status\G;
Empty set (0.00 sec)
ERROR:
No query specified
mysql>
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