connecting to database on a different server

I deployed a sample Rails app to a remote server with postgres hosted on the same server. The database.yml file was like this.

production: adapter: postgresql encoding: unicode database: remotepg_production pool: 5 host: localhost username: mrmann password: secret Everything worked fine. I then went into the database.yml file and replaced host: localhost with the ip address of a postgres database on another server host: 178.XXX.XXX like this

production: adapter: postgresql encoding: unicode database: remotepg_production pool: 5 host: 178.XXX.XXX.XXX #ip address of server with other postgres database username: mrmann password: secret When I restarted postgres on the server with the Rails app, the sample application now gave me the ‘something went wrong’ page for Rails.

The username and the password for the username are the same on both dbs. Can you suggest what the problem might be? Thanks