1.docker安装mysql: docker pull mysql:latest
    2.docker启动mysql: docker run -itd —name mysql01 -p 3306:3306 -e MYSQL_ROOT_PASSWORD=root mysql
    3.docker安装之后进入mysql:docker exec -it mysql01 bash
    注意点1:启动mysql客户端必须先进入mysql,然后执行 mysql -uroot -p

    4.问题：mysql 使用navicat连接出错？https://blog.csdn.net/weixin_43187491/article/details/88677034

    5.mysql最新版是默认开启binlog的，意味着，数据发生改变，canal就能够监听到！
    6.配置canal监听：
    授权 canal 链接 MySQL 账号具有作为 MySQL slave 的权限, 如果已有账户可直接 grant：
    create user canal@’%’ IDENTIFIED by ‘canal’;
    GRANT SELECT, REPLICATION SLAVE, REPLICATION CLIENT,SUPER ON . TO ‘canal’@’%’;
    FLUSH PRIVILEGES;
    7.涉及mysql配置操作，要重启才可生效—-》重启命令：docker restart mysql01

    8.docker mysql 修改mysql相关的配置文件:https://www.cnblogs.com/boboblue/p/12161482.html

    1. Errorstarting userland proxy: listen tcp4 0.0.0.0:3306: bind: address already in use:https://blog.csdn.net/weixin_42236165/article/details/92121106