CentOS8 Mysql启动失败问题及解决过程

[root@primo ~]# service mysqld start
starting mysqld (via systemctl):  job for mysqld.service failed because the control process exited with error code.
see "systemctl status mysqld.service" and "journalctl -xe" for details.
[failed]

can't start server: can't check pid filepath: no such file or directory

[root@primo run]# mkdir /var/run/mysqld/

[root@primo run]# chown mysql.mysql /var/run/mysqld/

[root@primo run]# service mysqld start
starting mysqld (via systemctl):  [  ok  ]