Mondrian: Create Connection

There is a document here that shows how to create a new connection, in general.

With respect to Mondrian there are two "flavors":

1. Only Mondrian.

After configuring this one you normally don't need username/password. All you need to know is the location of the Xmla service. The image below shows the connection properties in such a case (I have the service available at http://127.0.0.1:8080/mondrian/xmla):

Be aware that the location IS case sensitive.

2. The one from Pentaho BI Server.

This one includes authentication so the credentials should be entered (by default use admin/password):

By default, in this case the service is available on http://127.0.0.1:8080/pentaho/Xmla.