1.准备2台机器

server1 192.168.0.37
server2 192.168.0.119

2.安装mysql，我这里用的docker-compose

server1的docker-compose

version: '3'
services:
  db:
    build: ./build
    container_name: db
    image: mysql:5.6
    restart: always
    command:
      --character-set-server=utf8mb4
      --collation-server=utf8mb4_general_ci
      --explicit_defaults_for_timestamp=true
      --lower_case_table_names=1
      --max_allowed_packet=128M
      --max_connections=3000
      --innodb_large_prefix=on
      --log-bin=mysql-bin
      --sync_binlog=1
      --server-id=1
      --auto_increment_increment=1
      --auto_increment_offset=1
      --log_slave_updates=1
      --binlog-ignore-db=mysql
      --sql-mode="STRICT_TRANS_TABLES,NO_AUTO_CREATE_USER,NO_ENGINE_SUBSTITUTION,NO_ZERO_DATE,NO_ZERO_IN_DATE,ERROR_FOR_DIVISION_BY_ZERO"
    volumes:
      - "./mysql:/var/lib/mysql"
    ports:
      - '3306:3306'
    environment:
      - MYSQL_ROOT_PASSWORD=xxxxxxx
      - SET_CONTAINER_TIMEZONE=true
      - CONTAINER_TIMEZONE=Asia/Shanghai

server2的docker-compose

version: '3'
services:
  db:
    build: ./build
    container_name: db
    image: mysql:5.6
    restart: always
    command:
      --character-set-server=utf8mb4
      --collation-server=utf8mb4_general_ci
      --explicit_defaults_for_timestamp=true
      --lower_case_table_names=1
      --max_allowed_packet=128M
      --max_connections=3000
      --innodb_large_prefix=on
      --log-bin=mysql-bin
      --sync_binlog=1
      --server-id=2
      --auto_increment_increment=1
      --auto_increment_offset=1
      --log_slave_updates=1
      --binlog-ignore-db=mysql
      --sql-mode="STRICT_TRANS_TABLES,NO_AUTO_CREATE_USER,NO_ENGINE_SUBSTITUTION,NO_ZERO_DATE,NO_ZERO_IN_DATE,ERROR_FOR_DIVISION_BY_ZERO"
    volumes:
      - "./mysql:/var/lib/mysql"
    ports:
      - '3306:3306'
    environment:
      - MYSQL_ROOT_PASSWORD=xxxxxx
      - SET_CONTAINER_TIMEZONE=true
      - CONTAINER_TIMEZONE=Asia/Shanghai

build目录是dockerfile和init.sql

dockerfile

FROM mysql:5.6
RUN cp /usr/share/zoneinfo/Asia/Shanghai /etc/localtime && echo 'Asia/Shanghai' >/etc/timezone
ADD ./init.sql /docker-entrypoint-initdb.d/init.sql

init.sql

create database testdb default character set utf8mb4;

然后docker-compose up -d 把mysql装好，当然，不用docker-compose也是可以的，自己装mysql就好了

安装好以后分别进入mysql

server1

进入容器，登录mysql

 show master status;

根据查询结果编写sql（server的ip是192.168.0.37）

change master to master_host = '192.168.0.119',master_port=3306,master_user='root',master_password='xxxxxx',master_log_file='mysql-bin.000002',master_log_pos=120;

另外一台机器也是同理（server的ip是192.168.0.119）

change master to master_host = '192.168.0.37',master_port=3306,master_user='root',master_password='xxxxxx',master_log_file='mysql-bin.000002',master_log_pos=120;

两边都设置了以后，再分别启动

start slave;

启动了以后查看一下状态

show slave status\G

两边查询都显示这样，就表示成功了。