MySQL service failed to start under CentOS

MySQL service failed to start, you can use the exclusion method to find the cause:

If you modify the MY.CNF after restarting the MySQL service fails, in most cases the configuration file has errors,

By backing up the original configuration file and then emptying the profile, only [Mysqld] is left.

Using the command systemctl restart Mysqld, if you can restart successfully, the configuration file is wrong,

You can modify the configuration file.

If you do not restart after doing this, it is necessary to check the MySQL log file to continue troubleshooting.

MySQL service failed to start under CentOS