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Ten million methods, backup the first!

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running: Service mysqld start the following prompt will always appear when restarting the database:
MySQL daemon failed to start.
starting mysqld: [failed]
prompt. If you directly enter MySQL – root – P to log in, you will get an error [MySQL] error 2002 (HY000): can’t connect to local MySQL server through socket ‘/ var/lib/MySQL/MySQL. Socket’ (2). In short, MySQL server always fails to start. There are many solutions available on the Internet, which have no effect. In the end, the solution is as follows

RM – RF/var/lib/MySQL/* involves deleting and renaming the backup as follows MV/var/lib/MySQL// var/lib/MySQL_ Bak/ RM/var/lock/subsys/mysqld involves deleting and renaming the backup as follows MV/var/lock/subsys/mysqld/var/lock/subsys/mysqld_ bakkillall mysqld