пример базы данных и пользователя для установки MediaWiki

mysql -u root -p


MariaDB [(none)]> CREATE DATABASE mediawiki;
MariaDB [(none)]> GRANT ALL PRIVILEGES ON mediawiki.* TO 'wikiuser'@'localhost' IDENTIFIED BY 'your-password';
MariaDB [(none)]> FLUSH PRIVILEGES;
MariaDB [(none)]> exit;