有时候我们的有许多台Slave库,根据业务需要一台甚至几台不在使用需要下线了.这时候就不在需要从Master同步数据了.那么我们如何清理Slave呢?下面的例子给你答案
下面是一台跟主库同步的Slave将要下线
mysql> show slave status\G
*************************** 1. row ***************************
Slave_IO_State: Waiting for master to send event
Master_Host: 192.168.11.22
Master_User: repl
Master_Port: 3306
Connect_Retry: 60
Master_Log_File: mysql-bin.000062
Read_Master_Log_Pos: 120
Relay_Log_File: relay-bin.000020
Relay_Log_Pos: 3208
Relay_Master_Log_File: mysql-bin.000015
Slave_IO_Running: Yes
Slave_SQL_Running: Yes
Replicate_Do_DB: test01
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: 3045
Relay_Log_Space: 181804
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: 6314464
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: 2
Master_UUID: 69a73914-62ca-11e3-870f-080027dff846
Master_Info_File: /mysql/data/master.info
SQL_Delay: 0
SQL_Remaining_Delay: NULL
Slave_SQL_Running_State: Sending data
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)
执行reset slave;
mysql> stop slave;
Query OK, 0 rows affected (0.04 sec)
mysql> reset slave;
Query OK, 0 rows affected (0.02 sec)
在次执行会发现还是会有剩余配置信息
mysql> show slave status\G
*************************** 1. row ***************************
Slave_IO_State:
Master_Host: 192.168.11.22
Master_User: repl
Master_Port: 3306
Connect_Retry: 60
Master_Log_File:
Read_Master_Log_Pos: 4
Relay_Log_File: relay-bin.000001
Relay_Log_Pos: 4
Relay_Master_Log_File:
Slave_IO_Running: No
Slave_SQL_Running: No
Replicate_Do_DB: test01
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:
..........
..........
..........
..........
..........
1 row in set (0.00 sec)
mysql>
执行reset slave all这个命令看看结果
mysql> reset slave all;
Query OK, 0 rows affected (0.00 sec)
mysql> show slave status\G
Empty set (0.00 sec)
果然没有了.reset slave执行的时候会删除master.info和relay-log.info但是同步信息会保留.要想彻底清除可以使用reset slave all.^_^,今天先到这里了.
