MySQL主从复制

主服务须开启二进制日志

一、主数据库Master配置

1、修改配置文件      /etc/my.cnf

[mysqld]
port            = 3306
socket          = /app/mysql/mysql.sock
datadir         = /app/mysqldb/
log-bin         = mysql-bin
server-id       = 1

2、重启服务，查看当前日志位置

systemctl restart mysqld      #重启MySQL服务
MariaDB [(none)]> show binary logs;

 

3、导入数据

mysql -u root -p < all.sql

 4、创建有复制权限的用户帐号

MariaDB [(none)]> grant replication slave on *.* to 'repluser'@'192.168.31.%' identified by 'lijiwei';

 

 

二、从服务器Slave配置

1、设置server-id，必须是唯一

[mysqld]
port            = 3306
datadir         = /app/mysqldb
socket          = /tmp/mysql.sock
server-id       = 2

2、重启MySQL，执行同步SQL语句

systemctl restart mysqld

MariaDB [(none)]> CHANGE MASTER TO
    -> MASTER_HOST='192.168.31.128',
    -> MASTER_USER='repluser',
    -> MASTER_PASSWORD='lijiwei',
    -> MASTER_LOG_FILE='mariadb-bin.000005',
    -> MASTER_LOG_POS=342;

3、启动同步进程

MariaDB [(none)]> start slave;

 4、查看slave状态

MariaDB [(none)]> show slave status\G;

 

 

 核对主数据库日记