Help connecting to MariaDB Database

Greetings,
I’m working on setting up a network containing a database, Ignition Server, and a few clients. I’m using a few Raspberry Pi’s to achieve this. I’ve managed to get the database installed on one Pi and Ignition on another. When I try and connect Ignition the the MariaDB database I get an error saying it refused to connect. I’m new to databases and have not been able to find where it issue is. I suspect it is in the database security settings.

The error message I get is below. I can post the more detailed version if it would be helpful.
Cannot create PoolableConnectionFactory (Could not connect to address=(host=192.168.0.100)(port=3306)(type=master) : Connection refused (Connection refused))

Cheers
Joe

Try this: https://mariadb.com/kb/en/library/configuring-mariadb-for-remote-client-access/