Admin
yum install mariadb-server mariadb -y
免密码
mysqld_safe --skip-grant-table &
mysql -uroot
use mysql;
update user set password=password('000000') where user='root';
exit;
pkill mysqld
systemctl start mariadb
systemctl enable mariadb
mysql -uroot -p
https://www.jianshu.com/p/82438571e27e
https://my.oschina.net/u/1433007/blog/380988