Question

将Heroku应用程序从Bamboo迁移到Cedar时，我收到了这个意外错误：

app[web.1]: Exiting
app[web.1]:     from /app/vendor/bundle/ruby/2.0.0/gems/railties-3.0.19/lib/rails/rack/log_tailer.rb:8:in `initialize'
app[web.1]:     from /app/vendor/bundle/ruby/2.0.0/gems/rack-1.2.8/lib/rack/server.rb:247:in `new'
app[web.1]: /app/vendor/bundle/ruby/2.0.0/gems/railties-3.0.19/lib/rails/rack/log_tailer.rb:8:in `size': No such file or directory - log/production.log (Errno::ENOENT)
app[web.1]:     from /app/vendor/bundle/ruby/2.0.0/gems/rack-1.2.8/lib/rack/server.rb:247:in `block in build_app'
app[web.1]:     from /app/vendor/bundle/ruby/2.0.0/gems/rack-1.2.8/lib/rack/server.rb:243:in `build_app'
app[web.1]:     from /app/vendor/bundle/ruby/2.0.0/gems/rack-1.2.8/lib/rack/server.rb:253:in `wrapped_app'
app[web.1]:     from /app/vendor/bundle/ruby/2.0.0/gems/rack-1.2.8/lib/rack/server.rb:204:in `start'
app[web.1]:     from /app/vendor/bundle/ruby/2.0.0/gems/railties-3.0.19/lib/rails/commands/server.rb:65:in `start'
app[web.1]:     from /app/vendor/bundle/ruby/2.0.0/gems/railties-3.0.19/lib/rails/commands.rb:30:in `block in <top (required)>'
app[web.1]:     from /app/vendor/bundle/ruby/2.0.0/gems/railties-3.0.19/lib/rails/commands.rb:27:in `tap'
app[web.1]:     from /app/vendor/bundle/ruby/2.0.0/gems/rack-1.2.8/lib/rack/server.rb:243:in `reverse_each'
app[web.1]:     from /app/vendor/bundle/ruby/2.0.0/gems/railties-3.0.19/lib/rails/commands.rb:27:in `<top (required)>'
app[web.1]:     from script/rails:6:in `<main>'
app[web.1]:     from script/rails:6:in `require'
heroku[web.1]: State changed from starting to crashed

最重要的一句话：

/app/vendor/bundle/ruby/2.0.0/gems/railties-3.0.19/lib/rails/rack/log_tailer.rb:8:in`size'：没有这样的文件或目录 - 日志/production.log（Errno :: ENOENT）

我的源代码中没有production.log。
我的config/environments/production.rb说config.logger = Logger.new(STDOUT)。
我在源代码中的几十个地方使用logger.debug。

Heroku甚至不允许写入文件系统，因此我不知道它来自何处知道如何解决它吗？

Answer 1

我从文件config.logger = Logger.new(STDOUT)中删除了行config/environments/production.rb，这解决了问题。

服务器现已成功启动。

Heroku崩溃：log_tailer.rb：8：在`size＆＃39;：没有这样的文件或目录 - log / production.log

1 个答案: