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.