MariaDB

Après installation

# mysql_secure_installation

Pour autoriser à se connecter via adminer

t# mysql
Welcome to the MariaDB monitor.  Commands end with ; or \g.
Your MariaDB connection id is 18
Server version: 10.1.26-MariaDB-0+deb9u1 Debian 9.1

Copyright (c) 2000, 2017, Oracle, MariaDB Corporation Ab and others.

Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.

MariaDB [(none)]> GRANT ALL PRIVILEGES ON *.* TO root@'localhost' IDENTIFIED BY 'mon_mot_de_passe';
Query OK, 0 rows affected (0.00 sec)