Docker容器中的MySql主从复制

使用docker-conpose部署master库：

version: "3"
services:
  mysql5.7:
    image: mysql:5.7
    ports:
      - 3307:3306
    volumes:
      - ./data:/var/lib/mysql
      - ./conf:/etc/mysql/conf.d
      - ./logs:/logs
    restart: always
    privileged: true
    environment:
      - TZ=Asia/Shanghai
      - MYSQL_ROOT_PASSWORD=root

改配置：

[mysqld]
lower_case_table_names=1
skip-name-resolve
max_allowed_packet = 100M
## 同一局域网内注意要唯一
server-id=100
## 开启二进制日志功能，名称可以随便取（关键）
log-bin=mysql-bin

重启 docker-compose restart mysql5.7
进入容器命令行docker-compose exec mysql5.7 bash
连接mysql

root@c2c81ec6363a:/# mysql -hlocalhost -uroot -p
Enter password:
Welcome to the MySQL monitor.  Commands end with ; or \g.
Your MySQL connection id is 2
Server version: 5.7.37-log MySQL Community Server (GPL)

Copyright (c) 2000, 2022, Oracle and/or its affiliates.

Oracle is a registered trademark of Oracle Corporation and/or its
affiliates. Other names may be trademarks of their respective
owners.

Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.

mysql>

Master数据库创建数据同步用户，授予用户 syncREPLICATION SLAVE权限和REPLICATION CLIENT权限，用于在主从库之间同步数据。

mysql> CREATE USER 'sync'@'%' IDENTIFIED BY '123456';
Query OK, 0 rows affected (0.00 sec)

mysql> GRANT REPLICATION SLAVE, REPLICATION CLIENT ON *.* TO 'sync'@'%';
Query OK, 0 rows affected (0.00 sec)