Mysql数据库实现主从同步,看这一篇就够了( 三 )
注意:
1.指定的master信息会自动保存到/var/lib/mysql/master.info文件中 。
2.若要更改指定的主库信息,需先执行stop slave,修改完成后在执行start slave 。
4.查看slave状态
-确定IO线程、SQL线程都是Yes状态

文章插图
报错解决:
UUID问题报错解决:Fatal error: The slave I/O thread stops because master and slave have equal MySQL server UUIDs…
mysql> show slave statusG;*************************** 1. row *************************** Slave_IO_State: Waiting for master to send event Master_Host: 192.168.2.128 //主库IP地址 Master_User: mysqluser Master_Port: 3306 Connect_Retry: 60 Master_Log_File: db128.000002 Read_Master_Log_Pos: 452757169 Relay_Log_File: test2-relay-bin.000002 Relay_Log_Pos: 3205508 Relay_Master_Log_File: db128.000002 Slave_IO_Running: Yes //IO线程已运行 Slave_SQL_Running: Yes //SQL线程已运行 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: 452757169 Relay_Log_Space: 3205715 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: 0Master_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: 128 Master_UUID: e46c9961-5780-11ea-bf2f-000c128a8b6b Master_Info_File: /var/lib/mysql/master.info SQL_Delay: 0 SQL_Remaining_Delay: NULL Slave_SQL_Running_State: Slave has read all relay log; waiting for more updates 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 Replicate_Rewrite_DB: Channel_Name: Master_TLS_Version:1 row in set (0.00 sec)
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