MariaDB
Contents
This article was tested on Debian 9 (stretch).
Installation
apt install python3-dev mariadb-server libmariadbclient-dev libssl-dev python3-mysqldb
Configure database
see https://www.digitalocean.com/community/tutorials/how-to-use-mysql-or-mariadb-with-your-django-application-on-ubuntu-14-04, “Create a Database and Database User”.
Backup
It might be a good idea to backup your databases, e.g. via cron
00 4 * * * rm /var/opt/mariadb/backups/dbdump_*.sql; mysqldump --all-databases > /var/opt/mariadb/backups/dbdump_$(date +"\%Y\%m\%d_\%H\%M\%S").sql
Remember to add /var/opt/mariadb/backups
to your backup path (and create the folder, if it doesn’t exist).