https://my.oschina.net/crazymus/blog/3125369
下载后后会碰到 本地连不上虚拟机的mysql, 原来mysql还有很多的权限和设置
https://www.cnblogs.com/dtiove/p/5716591.html
https://www.cnblogs.com/blogforly/p/5997553.html
https://blog.csdn.net/paullinjie/article/details/80340145
grant all privileges on *.* to 'root'@'%' identified by 'root';
flush privileges;