无法启动西纳特拉过程 - EventMachine的＆QUOT;无受体＆QUOT; [英] cannot start sinatra process - eventmachine "no acceptor"

问题描述

我有我作为后台进程运行，使用Apache端口转发端口80和7655.之间进行调解这在过去一直致力于罚款辛纳屈的应用程序。如今，没有那么好。我想不通为什么。

I have a Sinatra app that I run as a daemon, using Apache port-forwarding to mediate between port 80 and port 7655. This has been working fine in the past. Today, not so well. I cannot figure out why.

问题： sudo的红宝石my_process.rb 返回：

/var/lib/gems/1.9.1/gems/eventmachine-1.0.0/lib/eventmachine.rb:526:in `start_tcp_server': no acceptor (port is in use or requires root privileges) (RuntimeError)

尝试：更新所有系统软件包，更新所有的宝石。没有帮助（除了从EventMachine的更明确的错误信息）。

Tried: updating all system packages, updating all gems. No help (except for the more clear error message from eventmachine).

当我运行须藤lsof的-i：7655 我什么也没有回来。当我运行须藤的ps aux 我不明白的任何的红宝石在所有进程。我觉得这极不规范，提供的错误消息的性质！

When I run sudo lsof -i :7655 I get nothing back. When I run sudo ps aux I don't see any Ruby processes at all. Which I find highly irregular, given the nature of the error message!

那么，有什么我失踪在查明原因的端口不可用？

So is there something I'm missing in finding out why the port is unavailable?

还有：

试图改变港口，没有什么。我不知道它是与localhost的？当我平本地主机我得到的所有丢弃的数据包。这似乎不正常。

Tried changing ports, nothing. I wonder if it is related to "localhost"? When I ping localhost I get all dropped packets. That doesn't seem normal.

推荐答案

原来，这两条线在主西纳特拉脚本提供最多的信息：

Turns out these two lines in the main Sinatra script provided the most information:

set bind: "localhost"
set port: 7655

问题是与本地主机。 Loopback接口配置不正确。 使用ifconfig 显示罗接口，但它没有被分配的IP 127.0.0.1 。要解决问题，跑在外壳下面的命令（在Ubuntu Linux系统上）：

The problem was with localhost. The loopback interface was not properly configured. ifconfig showed the lo interface, but it hadn't been assigned the IP 127.0.0.1. To resolve, ran the following commands in the shell (on an Ubuntu Linux system):

ifdown lo
ifup lo

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