systemctl enable mariadb
systemctl start mariadb
systemctl status mariadb
mysql_secure_installation
firewall-cmd --add-port=3306/tcp --permanent
firewall-cmd --reload
mysql -u root -p
MariaDB [(none)]> GRANT ALL ON . TO root@‘%‘ IDENTIFIED BY "yourpassword";
MariaDB [(none)]> FLUSH PRIVILEGES;
MariaDB [(none)]> exit
原文：https://blog.51cto.com/yimiyinei/2461562