This guide explains what settings to use to connect to the MySQL server.
Host = localhost (really, put localhost)
Database name = (cpanelusername_databasename)
Database username = (cpanelusername_databaseusername)
Database password = (******)
Note: When you move databases to our servers, the database name and username may change. This change must be updated in your script code. (The database name and username is clearly displayed in cPanel, in the MySQL area.)
On shared servers, the database user name cannot be changed to something without the cPanel user name in it.
It is possible for someone to use their cPanel username and password to connect to the database. However, we NEVER recommend doing this because the first time you change or reset your cPanel password, then your databases will stop working.