Installer MariaDB

Installer

apt update -y
apt install -y mariadb-server

Activer

systemctl enable --now mariadb

Sécuriser

mysql_secure_installation

Créer une base et un utilisateur (exemple)

mysql -u root -p
CREATE DATABASE app;
CREATE USER 'appuser'@'localhost' IDENTIFIED BY 'CHANGE_ME';
GRANT ALL PRIVILEGES ON app.* TO 'appuser'@'localhost';
FLUSH PRIVILEGES;