Question

我的服务器上依赖 Ruby 和 Ruby On Rails 的一些应用程序似乎已停止工作。或至少部分如此。我设法通过重新安装Ruby的不同部分来获取有问题的应用程序的web gui以重新开始运行。但是我最喜欢在这个过程中打破了别的东西。

我已经设法使用一些测试来跟踪它，似乎 Etc 在程序运行时以某种方式找不到。

我测试了

ruby -e 'puts Etc.getpwnam("apache").uid'

得到了

未初始化的常数Etc

如果我改为测试

ruby -r etc -e 'puts Etc.getpwnam("apache").uid'

我得到了正确答案

48

这是在 Amahi6 服务器上运行（运行 Fedora Core 14 64位）。

实际应用程序中失败的代码示例

#!/usr/bin/env ruby
# Amahi Home Server
# Copyright (C) 2007-2010 Amahi
#
# This program is free software; you can redistribute it and/or
# modify it under the terms of the GNU General Public License v3
# (29 June 2007), as published in the COPYING file.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# file COPYING for more details.
#
# You should have received a copy of the GNU General Public
# License along with this program; if not, write to the Amahi
# team at http://www.amahi.org/ under "Contact Us."

require File.dirname(__FILE__) + '/../config/boot'
#require 'commands/runner'
require 'optparse'

# switch to apache:users first
uid = Etc.getpwnam("apache").uid
gid = Etc.getgrnam("users").gid
Process.gid = gid
Process.egid = gid
Process.uid = uid
Process.euid = uid
...

这失败了同样的

未初始化的常数Etc

澄清：我根本没有更改此代码，而且它已经处于当前状态

我搞砸了什么呢？：）

更新：现在安装的Ruby是版本 1.8.7

更新2：

如果我尝试为 rubygems 和等手动添加 require ，则会失败，但会抱怨另一个包。所以我认为有一些东西从根本上搞砸了我的红宝石的核心。

/usr/lib64/ruby/gems/1.8/gems/activesupport-2.3.4/lib/active_support/dependencies.rb:55：未初始化的常量ActiveSupport :: Dependencies :: Mutex（NameError）从 /usr/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:36:in gem_original_require' from /usr/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:36:in需要” 从 /usr/lib64/ruby/gems/1.8/gems/activesupport-2.3.4/lib/active_support.rb:56 从 /usr/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:36:in gem_original_require' from /usr/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:36:in需要” 从 /usr/lib64/ruby/gems/1.8/gems/activerecord-2.3.4/lib/active_record.rb:25 从 /usr/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:36:in gem_original_require' from /usr/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:36:in需要” 来自/ var / hda / platform / html / script / install-app：70

Answer 1

结束了rails和gem的版本是新的。降级为宝石1.3.7 和 rails 2.3.8 。

gem update --system 1.3.7

gem uninstall rails

gem install rails --version 2.3.8

Answer 2

您似乎缺少require 'rubygems'和require 'etc'（将它们放在require 'optparse'下面）

Answer 3

记住'rubygems'，

命令行：

ruby -rubygems -e 'puts Etc.getpwnam("apache").uid'

脚本：

require 'rubygems'
puts Etc.getpwnam("apache").uid

运行Ruby应用程序时“未初始化的常量Etc”

3 个答案: