I would like connect with remote DB.

And, having tried to do so, does it work? Notwithstanding the fact that the script will make some incorrect assumptions (e.g. the amount of total RAM available to the DB), there's nothing in the script to stop you from using it against a remote host.

I looked into the script and out of the box it does not support remote connections to a database. In my case I would like to run the script against an AWS RDS instance on which one does not have access via for example SSH. So running it locally is not an option.