Heroku error when launch rails3.1 app missing postgres gem

Question

I am trying to deploy to heroku.

Rails 3.1.0.rc4,

I get the following error from Heroku logs:

Starting process with command: `thin -p 48902          


        

Answer 1

You don't have to install Postgres locally. In your Gemfile, put 'pg' in group :production, as johnny-grass suggests, and then when you run bundle, just specify --without production, like this:

bundle --without production

Unfortunately, you have to remember this argument when you run bundler, but at least you don't have to install and maintain postgres locally.

Please note that Heroku "strongly recommends against" using sqlite, saying that "Your production and development environment should be as close to identical as possible" http://devcenter.heroku.com/articles/rails3