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MYSQL5.5主从配置:A->B->C_MySQL

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Release: 2016-06-01 13:36:08
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MYSQL5.5主从配置:A->B->C

 

   A(端口3307)->B(端口3308)->C(端口3309) 

一、配置文件

A(my.cnf): 

#配一个唯一的ID编号 

server-id=1   

#打开binlog 

log-bin 

log_slave_updates 

binlog_format=row 

#配置自增偏移量 

auto_increment_increment=3 

auto_increment_offset=1 

 

B(my.cnf): 

#配一个唯一的ID编号 

server-id=2  

#打开binlog 

log-bin 

log_slave_updates 

binlog_format=row 

#配置自增偏移量 

auto_increment_increment=3 

auto_increment_offset=2 

# 只读 

read-only 

 

C(my.cnf): 

#配一个唯一的ID编号 

server-id=3  

#打开binlog 

log-bin 

log_slave_updates 

binlog_format=row 

#配置自增偏移量 

auto_increment_increment=3 

auto_increment_offset=3 

# 只读 

read-only 

 

二、命令行 

A: 

1、重置master状态: RESET MASTER; 

2、授权同步用户: GRANT REPLICATION SLAVE ON *.* TO 'repli_user'@'%' IDENTIFIED BY 'repli_pwd'; 

同步用户名:repli_user,同步用户密码:repli_pwd,有REPLICATION SLAVE的权限IP:%(生产中使用精确IP) 

3、备份A库所有数据: mysqldump -uroot -p** -P3307 -A -E -R --master-data=1 > master_A.sql 

 

B: 

1、重置slave状态: RESET SLAVE; 

2、重置master状态: RESET MASTER; 

3、授权同步用户: GRANT REPLICATION SLAVE ON *.* TO 'repli_user'@'%' IDENTIFIED BY 'repli_pwd'; 

4、同步参数配置: CHANGE MASTER TO MASTER_HOST='localhost',MASTER_USER='repli_user',MASTER_PASSWORD='repli_pwd',MASTER_PORT=3307;

5、导入主库数据: mysql -uroot -p** -P3307

6、开启同步: start SLAVE; 

7、备份B库所有数据: mysqldump -uroot -p** -P3308 -A -E -R --master-data=1 > master_B.sql 

 

C: 

1、重置slave状态: RESET SLAVE; 

2、同步参数配置: CHANGE MASTER TO MASTER_HOST='localhost',MASTER_USER='repli_user',MASTER_PASSWORD='repli_pwd',MASTER_PORT=3308;

3、导入主库数据: mysql -uroot -p** -P3309

4、开启同步: start SLAVE; 

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