源代码安装版本 
/usr/local/mysql/var

apt二进制发现版本
/usr/local/mysql/data

RPM安装版本
/var/lib/mysql![](http://i2.51cto.com/images/blog/201805/17/30c3156c6d4ec0319d12983d5c5096bb.png?x-oss-process=image/watermark,size_16,text_QDUxQ1RP5Y2a5a6i,color_FFFFFF,t_30,g_se,x_10,y_10,shadow_20,type_ZmFuZ3poZW5naGVpdGk=)