mysql主从复制命令执行过程

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我这里用docker镜像生成的两个容器，所以会导致主从复制失败：主从的uuid（UUID 是 通用唯一识别码）相同 。

mysql> stop slave;Query OK, 0 rows affected (0.01 sec)mysql> CHANGE MASTER TO MASTER_HOST='172.18.0.201',    -> MASTER_PORT=3306,    -> MASTER_USER='rep',    -> MASTER_PASSWORD='123',    -> MASTER_LOG_FILE='binlog.000003',    -> MASTER_LOG_POS=404;Query OK, 0 rows affected, 2 warnings (0.05 sec)mysql> start slave;Query OK, 0 rows affected (0.01 sec)mysql> show slave status\G;*************************** 1. row ***************************               Slave_IO_State:                  Master_Host: 172.18.0.201                  Master_User: rep                  Master_Port: 3306                Connect_Retry: 60              Master_Log_File: binlog.000003          Read_Master_Log_Pos: 404               Relay_Log_File: mysqld-relay-bin.000001                Relay_Log_Pos: 4        Relay_Master_Log_File: binlog.000003             Slave_IO_Running: No            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: 404              Relay_Log_Space: 120              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: NULLMaster_SSL_Verify_Server_Cert: No                Last_IO_Errno: 1593                Last_IO_Error: Fatal error: The slave I/O thread stops because master and slave have equal MySQL s                             erver UUIDs; these UUIDs must be different for replication to work.               Last_SQL_Errno: 0               Last_SQL_Error:  Replicate_Ignore_Server_Ids:             Master_Server_Id: 1                  Master_UUID:             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 the slave I/O thread to update it           Master_Retry_Count: 86400                  Master_Bind:      Last_IO_Error_Timestamp: 190614 11:55:05     Last_SQL_Error_Timestamp:               Master_SSL_Crl:           Master_SSL_Crlpath:           Retrieved_Gtid_Set:            Executed_Gtid_Set:                Auto_Position: 01 row in set (0.00 sec)ERROR:No query specifiedmysql>

slave：

[root@e915630786b3 log]# cat /var/lib/mysqlmysql/       mysql-files/[root@e915630786b3 log]# cat /var/lib/mysql/auto.cnf[auto]server-uuid=c9db6142-8bfd-11e9-b3b7-0242ac110002

master：

[root@3b7cfc77f2b8 /]# cat /var/lib/mysql/auto.cnf[auto]server-uuid=c9db6142-8bfd-11e9-b3b7-0242ac110002

slave：

[root@e915630786b3 log]# rm -rf /var/lib/mysql/auto.cnf[root@e915630786b3 log]# systemctl restart mysql[root@e915630786b3 log]# cat /var/lib/mysql/auto.cnf[auto]server-uuid=c6f8e6d0-8e9b-11e9-84c9-0242ac1200ca

重新执行一遍主从复制命令即可。

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