主从同步错误一例
mysql> show slavestatus\G;
***************************1. row ***************************
Slave_IO_State:
Master_Host: 10.0.10.114
Master_User: rep
Master_Port: 3306
Connect_Retry: 60
Master_Log_File: mysql-bin.000024
Read_Master_Log_Pos: 264
Relay_Log_File: relay-bin.000001
Relay_Log_Pos: 4
Relay_Master_Log_File: mysql-bin.000024
Slave_IO_Running: No
Slave_SQL_Running: Yes
Replicate_Do_DB:
。。。。。。。。。。(省略)。。。。。。
Master_SSL_Verify_Server_Cert:No
Last_IO_Errno: 1593
Last_IO_Error: Fatal error: Theslave I/O thread stops becausemaster and slave have equal MySQL server ids; these ids must bedifferent for replication to work (or the --replicate-same-server-id optionmust be used on slave but this does not always make sense; please check themanual before using it).
解决：
[root@MySQL_web ~]# grep"server-id" /data/3306/my.cnf #####主库
server-id = 1
[root@MySQL_web ~]#
[root@MySQL_slave_web2 ~]# grep"server-id" /data/3306/my.cnf #####从库
server-id = 1 #####更改为3
[root@MySQL_slave_web2 ~]#
[root@MySQL_slave_web2 ~]# /data/3306/mysql restart
Restarting MySQL...
Stoping MySQL...
Enter password:
Starting MySQL...
mysql> stop slave;
Query OK, 0 rows affected (0.27 sec)
mysql> CHANGE MASTER TO MASTER_HOST='10.0.10.114', MASTER_PORT=3306, MASTER_USER='rep',MASTER_PASSWORD='802352', MASTER_LOG_FILE='mysql-bin.000024',MASTER_LOG_POS=264;
Query OK, 0 rows affected (0.01 sec)
mysql> start slave;
Query OK, 0 rows affected (0.01 sec)
mysql> show slavestatus\G;
***************************1. row ***************************
Slave_IO_State: Queueing masterevent to the relay log
Master_Host: 10.0.10.114
Master_User: rep
Master_Port: 3306
Connect_Retry: 60
Master_Log_File: mysql-bin.000028
Read_Master_Log_Pos: 106
Relay_Log_File: relay-bin.000043
Relay_Log_Pos: 251
Relay_Master_Log_File: mysql-bin.000028
Slave_IO_Running: Yes
Slave_SQL_Running: Yes
。。。。。。。。。(省略)。。。。。。。。。。。。。。
Last_IO_Errno: 0
Last_IO_Error:
Last_SQL_Errno: 0
Last_SQL_Error:
1 row in set (0.02sec)
ERROR:
No query specified
mysql>
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