An automated method that doesn't require much typing can be found [ here ]

Run the following using sudo or root.

apt update
apt install -y mariadb-server mariadb-client
systemctl start mariadb.service
mysql_secure_installation

Apply the following when running mysql_secure_installation

Enter current password for root (enter for none): press enter
Switch to unix_socket authentication [Y/n]        press n
Change the root password? [Y/n]                   press y
New password:                                     enter new root password
Re-enter new password:                            enter new root password again
Remove anonymous users?                           press y
Disallow root login remotely?                     press y
Remove test database and access to it?            press y
Reload privilege tables now?                      press y

Tweak your config as you see fit. I normally add the following as a bare minimum. Listen on all interfaces and skip-name-resolve for performance.

vi /etc/mysql/mariadb.conf.d/50-server.cnf

Find this line:

bind-address            = 127.0.0.1

Change it to:

bind-address            = 0.0.0.0

Add the folowing somewhere under [mysqld]

# custom sql settings
skip-name-resolve
# custom sql settings

Restart mariadb for changes to take effect.

systemctl restart mariadb