Due to the fact that databases are running on a separate infrastructure to ensure higher performance, specifying “localhost” during manual installation or configuration of the scripts you want to use will result in a message that the connection cannot be established.
Where can I find the right MySQL host?
After logging in to the mybox panel, select the “Databases” section from the menu and then the “MySQL Databases” item .

Then on the page that appears on the right you will find a frame that contains the host data.
