https://www.if-not-true-then-false.com/2013/install-mariadb-on-fedora-centos-rhel/

  dnf list mariadb*

1st run
  systemctl start mariadb.service # start manually
  systemctl status mariadb
  systemctl enable mariadb.service # at start up
secure installation
  /usr/bin/mysql_secure_installation