虚拟机环境：centos7 IP:192.168.37.134  用户名：root   密码：123

docker pull mysql:5.7docker run -p 3307:3306 --name mysql-master -e MYSQL_ROOT_PASSWORD=123 -d mysql:5.7
docker run -p 3308:3306 --name mysql-slaver1 -e MYSQL_ROOT_PASSWORD=123 -d mysql:5.7
docker run -p 3309:3306 --name mysql-slaver2 -e MYSQL_ROOT_PASSWORD=123 -d mysql:5.7

[mysqld]
server-id=3307  ##自定义id号，不要重
log-bin=mysql-bin  ##开启二进制日志

service mysql restartdocker start mysql-masterdocker exec -it mysql-master /bin/bash

CREATE USER 'slave'@'%' IDENTIFIED BY '123abc';  ##用户名是slave，密码是123abc
GRANT REPLICATION SLAVE, REPLICATION CLIENT ON *.* TO 'slave'@'%';  ##指定访问权限

[mysqld]
server-id=3308  ##id号，自定义，不要重就行
log-bin=mysql-slave-bin   ##开启二进制日志功能
relay_log=edu-mysql-relay-bin  ##配置中继日志

service mysql restart
docker start mysql-slaver1
docker exec -it mysql-slaver2 /bin/bash
mysql -u root -p

change master to master_host='192.168.37.134', master_user='slave', master_password='abc123', master_port=3307, master_log_file='mysql-bin.000001', master_log_pos= 789, master_connect_retry=30;

show slave status \G;

start slave;show slave status \G；

stop slave;  #修改之前需要先stop一下change master to master_host='192.168.37.134', master_user='slave', master_password='123abc', master_port=3307, master_log_file='mysql-bin.000001', master_log_pos= 789, master_connect_retry=30;start slave;show dlave status \G;

create database test charset utf8;
use test;
create table user(id int(11),name varchar(255))charset utf8;
insert into user(id,name) values(100,'tom'),(101,'jerry');