Rails：无法在生产中启动 rails 控制台

Question

我目前在 Ubuntu 18.04 生产服务器上运行的应用程序上使用Rails 5.2.3和Ruby 2.5.0 ，但是当我运行命令时

rails c --environment=production

命令终端卡住了，我必须同时按住 Ctrl + C 键来中止该过程。

但是，它输出以下错误：

^CTraceback (most recent call last):
    16: from bin/rails:3:in `<main>'
    15: from bin/rails:3:in `load'
    14: from /home/deploy/myapp/bin/spring:15:in `<top (required)>'
    13: from /home/deploy/.rbenv/versions/2.5.0/lib/ruby/site_ruby/2.5.0/rubygems/core_ext/kernel_require.rb:72:in `require'
    12: from /home/deploy/.rbenv/versions/2.5.0/lib/ruby/site_ruby/2.5.0/rubygems/core_ext/kernel_require.rb:72:in `require'
    11: from /home/deploy/.rbenv/versions/2.5.0/lib/ruby/gems/2.5.0/gems/spring-2.0.2/lib/spring/binstub.rb:31:in `<top (required)>'
    10: from /home/deploy/.rbenv/versions/2.5.0/lib/ruby/gems/2.5.0/gems/spring-2.0.2/lib/spring/binstub.rb:31:in `load'
     9: from /home/deploy/.rbenv/versions/2.5.0/lib/ruby/gems/2.5.0/gems/spring-2.0.2/bin/spring:49:in `<top (required)>'
     8: from /home/deploy/.rbenv/versions/2.5.0/lib/ruby/gems/2.5.0/gems/spring-2.0.2/lib/spring/client.rb:30:in `run'
     7: from /home/deploy/.rbenv/versions/2.5.0/lib/ruby/gems/2.5.0/gems/spring-2.0.2/lib/spring/client/command.rb:7:in `call'
     6: from /home/deploy/.rbenv/versions/2.5.0/lib/ruby/gems/2.5.0/gems/spring-2.0.2/lib/spring/client/rails.rb:24:in `call'
     5: from /home/deploy/.rbenv/versions/2.5.0/lib/ruby/gems/2.5.0/gems/spring-2.0.2/lib/spring/client/command.rb:7:in `call'
     4: from /home/deploy/.rbenv/versions/2.5.0/lib/ruby/gems/2.5.0/gems/spring-2.0.2/lib/spring/client/run.rb:35:in `call'
     3: from /home/deploy/.rbenv/versions/2.5.0/lib/ruby/gems/2.5.0/gems/spring-2.0.2/lib/spring/client/run.rb:42:in `warm_run'
     2: from /home/deploy/.rbenv/versions/2.5.0/lib/ruby/gems/2.5.0/gems/spring-2.0.2/lib/spring/client/run.rb:62:in `run'
     1: from /home/deploy/.rbenv/versions/2.5.0/lib/ruby/gems/2.5.0/gems/spring-2.0.2/lib/spring/client/run.rb:117:in `verify_server_version'
/home/deploy/.rbenv/versions/2.5.0/lib/ruby/gems/2.5.0/gems/spring-2.0.2/lib/spring/client/run.rb:117:in `gets': Interrupt

我已经尝试了一些解决方案，但目前似乎没有一个解决方案，我将不胜感激。

Answer 1

此问题与在后台预加载rails应用程序的spring gem有关，但不建议在生产环境中运行它

这是我解决问题的方法：

我安装/重新安装了spring gem：

gem install spring

然后我启动了（从中删除了spring gem） bin/可执行文件：

bin/spring binstub --remove --all

或者

spring binstub --remove --all

您现在可以运行以下命令以进入生产环境中的 rails 控制台

rails c --environment=production

此外，为了避免在随后的情况下发生这种情况，请努力确保spring gem 仅出现在您的 Gemfile 中的development和test组中。

此外，当您在生产中时，请确保始终向bundle install命令提供--without development test参数

bundle install --without development test

而不是通常的或常见的

bundle install