云铸造厂 - Rails 4 database.yml

Question

我正在尝试部署使用 mysql 数据库的 Rails 4 应用程序。数据库托管在不同的服务器上。

我很困惑我的 database.yml 文件应该如何配置，cloud foundry 如何知道要使用哪个部分。

部署后，加载我的应用程序时出现此错误

ActiveRecord::AdapterNotSpecified
'' database is not configured. Available: ["development"]

Rails.root: /home/vcap/app

如果您随后刷新页面，您会得到：

NoMethodError
undefined method `default_timezone=' for #<Class:0x007fd7930ab0f0>

Rails.root: /home/vcap/app

我的database.yml是这样的：

#local development
development:
  adapter: mysql2
  encoding: utf8
  host: hostname
  port: 3306
  database: appdb
  username: myapp
  password: 'password'
  timeout: 5000

# 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: &test
  adapter: sqlite3
  database: db/test.sqlite3
  pool: 5
  timeout: 5000


production:
  adapter: mysql2
  encoding: utf8
  host: hostname
  port: 3306
  database: appdb
  username: myapp
  password: 'password'
  timeout: 5000

Answer 1

如果您运行处于生产模式的 rails 应用程序。配置会是这样的。

production:
  adapter: postgresql
  encoding: utf8
  database: rails_myapp
  username: rails_myapp_user
  password: pwd
  host: 128.199.233.36
  port: 5432
  pool: 10

Answer 2

原来我需要这个 application.rb:

ENV['DATABASE_URL'] = 'mysql2://username:password@hostname:3306/dbname'

Answer 3

考虑将数据库 url 设置为 CF 中的环境变量：

cf set-env <app-name> DATABASE_URL 'mysql2://username:password@hostname:3306/dbname'

云铸造厂 - Rails 4 database.yml

Cloud Foundry - Rails 4 database.yml

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