腾讯云centos装mysql:
https://blog.csdn.net/paulowina/article/details/79890644
https://www.linuxidc.com/Linux/2016-09/135288.htm
腾讯云centos卸载mysql:
https://cloud.tencent.com/info/d11827410ab5a73206e7627f388383b4.html
linux操作指令:
https://www.jianshu.com/p/5999d8c58b2f