createuser: creation of new role failed: ERROR:  role "ubuntu" already exists

ActiveRecord::NoDatabaseError: FATAL:  database "hellowolrd_development" does not exist

default: &default
  adapter: postgresql
  encoding: SQL_ASCII
  pool: 5
  username: postgresql
  password: password

development:
  <<: *default
  database: instapost_development

test:
  <<: *default
  database: instapost_test

production:
  <<: *default
  encoding: unicode
  database: instapost_production