https://www.cnblogs.com/josn1984/p/8550419.html
https://blog.csdn.net/l1028386804/article/details/92671953
https://www.cnblogs.com/ivictor/p/9243259.html
https://blog.csdn.net/rorntuck7/article/details/79572041
https://blog.csdn.net/appleyuchi/article/details/79471025
https://superuser.com/questions/1097416/failed-to-stop-mysql-server-service-unit-mysql-server-service-not-loaded
https://blog.csdn.net/hdyebd/article/details/89153934