工头只显示“以 pid # 开头"的行，没有别的 [英] foreman only shows line with “started with pid #” and nothing else

问题描述

当我运行工头时，我得到以下信息:

When I run foreman I get the following:

 > foreman start
 16:47:56 web.1     | started with pid 27122

只有当我停止它(通过 ctrl-c)时，它才会向我显示缺少的内容:

Only if I stop it (via ctrl-c) it shows me what is missing:

^CSIGINT received
16:49:26 system    | sending SIGTERM to all processes
16:49:26 web.1     | => Booting Thin
16:49:26 web.1     | => Rails 3.0.0 application starting in development on http://0.0.0.0:5000
16:49:26 web.1     | => Call with -d to detach
16:49:26 web.1     | => Ctrl-C to shutdown server
16:49:26 web.1     | >> Thin web server (v1.3.1 codename Triple Espresso)
16:49:26 web.1     | >> Maximum connections set to 1024
16:49:26 web.1     | >> Listening on 0.0.0.0:5000, CTRL+C to stop
16:49:26 web.1     | >> Stopping ...
16:49:26 web.1     | Exiting
16:49:26 web.1     | >> Stopping ...

我该如何解决?

推荐答案

我已经能够通过两种不同的方式解决这个问题:

I’ve been able to resolve this issue by 2 different ways:

1. 来自 https://github.com/ddollar/foreman/wiki/缺失输出:

如果您没有看到程序的任何输出，则可能是它正在缓冲标准输出的机会.Ruby 默认缓冲标准输出.到禁用此行为，请尽早将此代码添加到您的程序:

If you are not seeing any output from your program, there is a likely chance that it is buffering stdout. Ruby buffers stdout by default. To disable this behavior, add this code as early as possible in your program:

# ruby
$stdout.sync = true

通过 heroku toolbelt 包安装 foreman

但我仍然不知道发生了什么，也不知道为什么上述两种方法解决了问题……

But I still don’t know what’s happening nor why this 2 ways above resolved the issue…

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