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

129機器：

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

先配主從：

128機器上：

拷貝數據並傳輸到129機器上

[root@localhost ~]# mysqldump -uroot -p123456 --all-databases > /tmp/mysqlall.sql
[root@localhost ~]# scp -r /tmp/mysqlall.sql 192.168.65.129:/tmp/

mysql> grant replication slave on *.* to 'repl'@192.168.65.129 identified by '123456';

mysql> flush privileges;

測試機器數據變化基本沒有，所以就不鎖表了

129機器上：

[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_password='123456', master_log_file='thermos.000001, master_log_pos=420;
Query OK, 0 rows affected, 2 warnings (0.01 sec)

mysql> start slave;
Query OK, 0 rows affected (0.01 sec)

mysql> show slave status\G

主從同步完成

主主同步：

129機器上：

更改/etc/my.cnf，增加log_bin

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

mysql> grant replication slave on *.* to 'repl'@192.168.65.128 identified by '123456';
Query OK, 0 rows affected (0.00 sec)

mysql> flush privileges;
Query OK, 0 rows affected (0.00 sec)

128機器上：

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

mysql> change master to master_host='192.168.65.129', master_user='repl', master_password='123456', master_log_file='alex.000001', master_log_pos=420;
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

測試主主

128上

129上

（已經多了micheal庫）

129上

128上

（多了jackson庫）

自己研究的，不知道正確與否，如果有錯誤，望指正！

MySQL雙主（主主）架構