参考文章：Canal - 安装 https://www.aliyun.com/jiaocheng/1131288.html?spm=5176.100033.2.7.7b422237XAirIe
前提摘要：mysql的binlog要开启状态，并配置binlog模式为row。
canal下载地址： https://github.com/alibaba/canal/releases
在mysql创建 canal 账号并且赋予可以复制repication的权限
CREATE USER canal IDENTIFIED BY 'canal';
GRANT SELECT, REPLICATION SLAVE, REPLICATION CLIENT ON *.* TO 'canal'@'%';
FLUSH PRIVILEGES;
