CentOS系统 MySQL无法启动Job for mysqld.service failed. See systemctl status mysqld.service and journalc

systemctl start mysqld启动MySQL报错

Job for mysqld.service failed. See ?systemctl status mysqld.service ?and ?journalctl -xn ?for details.

然后查看错误日志

cat /var/log/mysqld.log | grep ERROR? ? #只查看具体的报错日志，省略了其他类型的日志

Can t open the mysql.plugin table. Please run mysql_upgrade to create it.?

问题解决方法

rm -rf /var/lib/mysql/*
mysqld --initialize --user=mysql --datadir=/var/lib/mysql
 
systemctl restart mysqld
systemctl status mysqld