Centos 配置 Mysql 主从双向同步

时间：2022-01-27 17:32:42

配置之前，请先阅读mysql主从复制： Mysql-主从复制

　　原： 

　　主从环境：

　　　　主服务器：192.168.153.130

　　　　从服务器：192.168.153.131

1、从数据库创建同步用户，将主数据库作为从库

原从数据库192.168.153.131上执行
创建主从复制的帐号，将192.168.153.130作为从库：

mysql -u root -p

mysql> GRANT REPLICATION SLAVE,RELOAD,SUPER ON *.* TO backup@'192.168.153.130' IDENTIFIED BY '123456';

Query OK, 0 rows affected (0.00 sec)

2、原主数据库上执行

mysql> SHOW MASTER STATUS;

+------------------+----------+--------------+------------------+

| File             | Position | Binlog_Do_DB | Binlog_Ignore_DB |

+------------------+----------+--------------+------------------+

| mysql-bin.000001 |      358 |              |                  |

+------------------+----------+--------------+------------------+

1 row in set (0.00 sec)

mysql> stop slave;

Query OK, 0 rows affected, 1 warning (0.00 sec)

mysql> CHANGE MASTER TO

          MASTER_HOST='192.168.153.131',

          MASTER_USER='backup',

          MASTER_PASSWORD='123456',

          MASTER_PORT=3306,

          MASTER_LOG_FILE='mysql-bin.000001',

          MASTER_LOG_POS=358,

          MASTER_CONNECT_RETRY=10;

Query OK, 0 rows affected (0.05 sec)

mysql> SHOW SLAVE STATUS\G

*************************** 1. row ***************************

Slave_IO_State: Waiting for master to send event

Master_Host: 192.168.153.131

Master_User: backup

Master_Port: 3306

Connect_Retry: 10

Master_Log_File: mysql-bin.000001

Read_Master_Log_Pos: 275

Relay_Log_File: mysqld-relay-bin.000002

Relay_Log_Pos: 420

Relay_Master_Log_File: mysql-bin.000001

Slave_IO_Running: Yes

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: 275

Relay_Log_Space: 576

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: 0

Master_SSL_Verify_Server_Cert: No

Last_IO_Errno: 0

Last_IO_Error:

Last_SQL_Errno: 0

Last_SQL_Error:

1 row in set (0.00 sec)

3、测试主从双向数据同步
分别在主库和从库插入一条数据，会发现，都可以同步到另一部数据库。至此，MySQL主从双向同步完毕。

如果想配置读写分离，点击跳转：Mysql读写分离

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