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HomeDatabaseMysql TutorialMySQL双向复制(主主模式)

MySQL双向复制(主主模式) 环境: A: 192.168.1.1 没有数据 B: 192.168.1.2 没有数据 在A的[mysqld]字段下增加: auto-

MySQL双向复制(主主模式)

环境:

A: 192.168.1.1    没有数据

B: 192.168.1.2    没有数据

在A的[mysqld]字段下增加:

auto-increment-increment = 2 (增长值) A上就会 1,3,5,7这样增长

auto-increment-offset = 1    (初始值)

在B的[mysqld]字段下增加:

auto-increment-increment = 2  (增长值) B上就会2,4,6,8这样增长

auto-increment-offset = 2      (初始值)

因为是双向备份,可能产生主键重复等问题,,添加这两个参数防止主键重复

注意:server-id = 1 改成 server-id = 2

重启数据库

在A上

mysql> grant replication slave on *.* to 'beifen'@'192.168.1.2' identified by '123'; 创建 beifen用户,密码设置为123  并授权给192.168.1.2使用。

在B上

mysql> grant replication slave on *.* to 'beifen'@'192.168.1.1' identified by '123'; 创建 beifen用户,密码设置为123  并授权给192.168.1.1使用。

在A上:

查询主数据库的状态,并记下File和Position的值,

在B上

在A上:

mysql>change master to master_host=’192.168.1.2’,master_user=’beifen’,master_password=’123’,master_log_file=’mysql-bin.000016’ ,master_log_pos=106;

在B上:

mysql>change master to master_host=’192.168.1.1’,master_user=’beifen’,master_password=’123’,master_log_file=’mysql-bin.000010’ ,master_log_pos=257;

在A .、B上分别执行

启动slave同步

mysql > start slave;

在A、B上分别检查主从同步,如果您看到Slave_IO_Running和Slave_SQL_Running均为Yes,则主从复制连接正常。

mysql > show slave status\G

linux

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