ubuntu16.04 实现mysql 主从复制读写分离

编辑mysql配置文件

vi  /etc/mysql/mysql.cof.d/mysql.cnf

#服务器唯一标识

server-id = 1

#启动MySQL二进制日志
log_bin = /var/log/mysql/mysql-bin.log

指定记录二进制日志的数据库
binlog_do_db = marhal

指定不记录二进制日志的数据库
binlog_ignore_db = mysql

service mysql restart

登录主服务器创建从服务器用到的账户和权限

mysql -uroot -p>

mysql> create user backup_user;
Query OK, 0 rows affected (0.03 sec)

mysql>grant replication slave on *.* to 'backup_user' @'192.168.0.%' identified by '123456';

#backup_user 指的是主服务器备份用户名 123456 指的是主服务器备份用户名密码，192.168.0.%通配符，表示0-255的ip都可访问主服务器，正式环境配置指定从服务器ip

mysql> flush privileges;
Query OK, 0 rows affected (0.00 sec)

mysql>show master status;

192.168.0.126从数据库配置

server-id     = 2
log_bin     = /var/log/mysql/mysql-bin.log
binlog_format       = mixed
binlog_do_db = marhal
binlog_ignore_db = mysql

service mysql restart

mysql -uroot -p

>change master to

master_host='192.168.0.118',

master_port=3306,

master_user='backup_user',

master_password='123456',

master_log_file='mysql-bin.000004', //上面截图的File字段值

master_log_pos=154; //上面截图的Position字段值

>start slave;

#查看slave信息

>show slave status\G;