Home Database Mysql Tutorial MYSQL主备复制结构搭建_MySQL

MYSQL主备复制结构搭建_MySQL

May 30, 2016 pm 05:11 PM
structure

1 选择两个服务器,分别作为主备数据库

2 登陆到服务器,

yum install mysql ;

yum install mysql-server;

3 启动服务器

service mysqld start

4 分别root登陆mysql 执行如下命令,增加复制用户并授权(主备都在192.168.119.*网段,为了方便主备切换,两边都建立)

GRANT REPLICATION SLAVE,REPLICATION CLIENT on *.* to repl@'192.168.119.%' identified by '1234';

5 配置/etc/my.cnf

第一服务器(主)

log_bin=mysql_bin
server_id=1

第二个服务器(备)

log_bin=mysql_bin
server_id=2
read_only=1

6 登陆主(root)执行

show master status\G;

显示

File: mysql-bin.000001
Position: 106

 

登陆备(root) 执行

测试 mysql -urepl -h192.168.119.128 -p1234 是否能连接到主库,不能需要检查防火墙或者/etc/my.cnf是否有访问限制,修改配置

mysql -uroot登陆本地库执行:

CHANGE MASTER TO
MASTER_HOST='192.168.119.128',
MASTER_USER='repl',
MASTER_PASSWORD='1234',
MASTER_LOG_FILE='mysql-bin.000001',
MASTER_LOG_POS=106;

start slave;

show slave status\G;

7,主库上创建表,备库上查看,可以看到

备库上repl创建表,显示The MySQL server is running with the --read-only option so it cannot execute this statement

因为配置了备库为read_only

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