Question

在我的rails应用程序中，我有数据库的配置

  adapter: mysql2
  host: *****
  username: *****
  password: <%= ENV['MYSQL_PW'] %>
  database: *****
  encoding: utf8
  timeout: 5000
  pool: 5

它在服务器中运行良好。但最近有一个错误，我试图访问rails控制台，但我收到此错误

 Access denied for user '****' (using password: NO) (Mysql2::Error).

我也试图运行迁移，我再次遇到同样的错误。我不明白这里有什么问题。我怎么解决这个问题？另外，我如何检查在unix环境变量中是否设置了ENV['MYSQL_PW']？

这是我的日志

$ rake db:migrate
DEPRECATION WARNING: The configuration option `config.serve_static_assets` has been renamed to `config.serve_static_files` to clarify its role (it merely enables serving everything in the `public` folder and is unrelated to the asset pipeline). The `serve_static_assets` alias will be removed in Rails 5.0. Please migrate your configuration files accordingly. (called from block in <top (required)> at )
DEPRECATION WARNING: You did not specify a `log_level` in `production.rb`. Currently, the default value for `log_level` is `:info` for the production environment and `:debug` in all other environments. In Rails 5 the default value will be unified to `:debug` across all environments. To preserve the current setting, add the following line to your `production.rb`:

   config.log_level = :info

. (called from block in tsort_each )
rake aborted!
Mysql2::Error: Access denied for user '****' (using password: NO)

Answer 1

在运行命令时，不要忘记指定RAILS_ENV。

默认情况下，rails假定环境是开发环境，但正如我在此处所见，您希望在生产环境中运行这些环境。

简单地做

 RAILS_ENV=production rake db:migrate
 RAILS_ENV=production rails c
 # or alternatively
 rails c -e production

http://guides.rubyonrails.org/command_line.html

Answer 2

尝试以下方法：

将database.yml密码编辑为字符串而不是ENV变量，以识别问题。
要测试 ENV变量，请使用rails c登录rails控制台并输入ENV['YourVariable']以查看是否已设置
如果您在终端输入source ~/.bash_profile
如果你有Rails 4，你应该运行以下终端命令spring stop
在database.yml中，您应该使用以下语法包含ENV变量，因为yml需要.erb语法。 <%= ENV['YOUR VARIABLE'] %> Failing to access environment variables within `database.yml` file
ENV变量区分大小写

我有这个问题，我能够解决它，但我一直有它们。出于这个原因，我读了几个讨论： Rails 4.1 environment variables not reloading

很抱歉，如果我无法提供更多帮助

Fabrizio Bertoglio

mysql：用户拒绝访问

2 个答案: