Can't connect to PostgreSQL with Rails 4 and CentOS 6.5

Hi folks,

I have a Rails 4 app which I want to deploy and first I have to connect it to the DB. So I went to the Postgres console and ran:

create role somosprof with createdb createrole replication login password ‘mySafePWSD’;

And the user was properly created. Then I placed the configuration info into the config/database.yml file:

production: adapter: postgresql encoding: unicode database: somosprofessores_production pool: 5 username: somosprof password: mySafePWSD

But when I run rake db:migrate I get the following error:

[root@somosp somosprofessores]# RAILS_ENV=production rake db:create

        You no longer need to have jasmine.rake in your project, as it is now automatically loaded
        from the Jasmine gem. To silence this warning, set "USE_JASMINE_RAKE=true" in your environment
        or remove jasmine.rake.

FATAL: Peer authentication failed for user “somosprof”

What is going on? Please help me, this is very urgent and I have no idea on why it isn’t working