PG::ConnectionBad: 无法连接到服务器 (heroku)

Question

我可以很好地推送到 heroku.. 但是当我运行一个耙子时，我得到这个错误： PG::ConnectionBad: 无法连接到服务器

我可以运行在本地，所以不太确定为什么我在推送到 heroku 时遇到问题 - 任何帮助都会很棒

我怀疑这与我的 database.yml 文件有关：

# SQLite version 3.x
#   gem install sqlite3
#
#   Ensure the SQLite 3 gem is defined in your Gemfile
#   gem 'sqlite3'
#
default: &default
  adapter: postgresql
  pool: 5
  timeout: 5000

development:
  <<: *default
  database: db/development.sqlite3

# Warning: The database defined as "test" will be erased and
# re-generated from your development database when you run "rake".
# Do not set this db to the same as development or production.
test:
  <<: *default
  database: db/test.sqlite3




production:
  <<: *default
  database: db/production.sqlite3

这也是我的 gemfile：

source 'http://rubygems.org'


# Bundle edge Rails instead: gem 'rails', github: 'rails/rails'
gem 'rails', '4.1.8'
# Use sqlite3 as the database for Active Record
group :development do
  gem 'sqlite3'
  gem 'capistrano'
end

group :production do
  gem 'pg'
  gem 'mysql2'
  gem 'activerecord-mysql-adapter'
  gem 'rails_12factor'
end

# Use SCSS for stylesheets

  gem 'coffee-rails'
  gem 'bootstrap-sass', '~> 3.3.3'
  gem 'sass-rails', '>= 3.2'
  gem 'autoprefixer-rails'  
  gem 'will_paginate', '~> 3.0.7'
  gem 'will_paginate-bootstrap'


# Use Uglifier as compressor for JavaScript assets
gem 'uglifier', '>= 1.3.0'
# Use CoffeeScript for .js.coffee assets and views



# See https://github.com/sstephenson/execjs#readme for more supported runtimes
# gem 'therubyracer',  platforms: :ruby

# Use jquery as the JavaScript library
gem 'jquery-rails'
# Turbolinks makes following links in your web application faster. Read more: https://github.com/rails/turbolinks
gem 'turbolinks'
# Build JSON APIs with ease. Read more: https://github.com/rails/jbuilder
gem 'jbuilder', '~> 2.0'
# bundle exec rake doc:rails generates the API under doc/api.
gem 'sdoc', '~> 0.4.0',          group: :doc

# Use ActiveModel has_secure_password
# gem 'bcrypt', '~> 3.1.7'

# Use unicorn as the app server
# gem 'unicorn'

# Use Capistrano for deployment
# gem 'capistrano-rails', group: :development

# Use debugger
# gem 'debugger', group: [:development, :test]

# Windows does not include zoneinfo files, so bundle the tzinfo-data gem
gem 'tzinfo-data', platforms: [:mingw, :mswin]

Answer 1

你不应该将 database.yml 提交到 heroku:

When Rails applications are deployed to Heroku a database.yml file is
automatically generated for your application that configures
ActiveRecord to use a PostgreSQL connection and to connect to the
database located at DATABASE_URL. This behavior is only needed up to
Rails 4.1. Any later version contains direct support for specifying a
connection URL and configuration in the database.yml so we do not have
to overwrite it.

阅读 heroku documentation 相关内容。

PG::ConnectionBad: 无法连接到服务器 (heroku)

PG::ConnectionBad: could not connect to server (heroku)

ruby-on-rails

heroku