[root@localhost ~]# /etc/init.d/mysqld restart
Shutting down MySQL.. SUCCESS!
Starting MySQL.. SUCCESS!

備份數據

從1、192.168.65.129的/etc/my.cnf

[root@localhost ~]# /etc/init.d/mysqld restart
Shutting down MySQL.. SUCCESS!
Starting MySQL. SUCCESS!

從2、192.168.65.130的/etc/my.cnf

[root@localhost ~]# /etc/init.d/mysqld restart
Shutting down MySQL.. SUCCESS!
Starting MySQL. SUCCESS!

主上備份數據

[root@localhost ~]# mysqldump -uroot -p123456 --all-databases > mysqlall.sql

傳輸數據到從上

[root@localhost ~]# scp mysqlall.sql 192.168.65.129:/tmp/
[root@localhost ~]# scp mysqlall.sql 192.168.65.130:/tmp/

主上創建用作主從同步的虛擬用戶

mysql> grant replication slave on *.* to 'repl'@192.168.65.129 identified by '123456';
Query OK, 0 rows affected (0.00 sec)

mysql> grant replication slave on *.* to 'repl'@192.168.65.130 identified by '123456';
Query OK, 0 rows affected (0.00 sec)

mysql> show master status;

鎖表（做實驗沒有數據變化，可以不鎖表）

mysql> flush tables with read lock;
Query OK, 0 rows affected (0.00 sec)

在從上恢復數據

[root@localhost /]# mysql -uroot -p123456 < /tmp/mysqlall.sql

mysql> stop slave;
Query OK, 0 rows affected (0.00 sec)

mysql> change master to master_host = '192.168.65.128', master_user = 'repl', master_port=3306, master_password='123456', master_log_file = 'thermos.000001', master_log_pos=542;
Query OK, 0 rows affected, 2 warnings (0.01 sec)

mysql> start slave;
Query OK, 0 rows affected (0.00 sec)

mysql> show slave status\G

和從1一樣，配置從2

成功！

如有錯誤，敬請指出，謝謝！

MySQL一主多從