原文1：https://blog.csdn.net/c1052981766/article/details/80604083 原文2：http://www.freesion.com/article/676364257/
1.查看master mysql binlog: show binary logs ;
2.查看该binlog event position; show binlog events in 'mysql-bin.000047';
3. 修改conf/${instance}/meta.dat
4.重启 canal