尝试在RHEL5上运行god时不允许操作

Question

当我试图在RHEL5盒上启动上帝时，我得到了以下错误。我还安装了libevent和libevent-devel包，但错误仍然存在。有谁知道吗？

我对ruby文件https://github.com/mojombo/god/blob/master/lib/god/event_handler.rb打了补丁，将$!.message和$!.backtrace放入self.load方法的抢救异常块中，以获得以下回溯。

Operation not permitted
/home/rails/public_html/my_app/shared/bundle/ruby/1.9.1/gems/god-0.11.0/lib/god/event_handlers/netlink_handler.rb:1:in `require'
/home/rails/public_html/my_app/shared/bundle/ruby/1.9.1/gems/god-0.11.0/lib/god/event_handlers/netlink_handler.rb:1:in `<top (required)>'
/home/rails/public_html/my_app/shared/bundle/ruby/1.9.1/gems/god-0.11.0/lib/god/event_handler.rb:22:in `require'
/home/rails/public_html/my_app/shared/bundle/ruby/1.9.1/gems/god-0.11.0/lib/god/event_handler.rb:22:in `load'
/home/rails/public_html/my_app/shared/bundle/ruby/1.9.1/gems/god-0.11.0/lib/god/cli/run.rb:54:in `default_run'
/home/rails/public_html/my_app/shared/bundle/ruby/1.9.1/gems/god-0.11.0/lib/god/cli/run.rb:100:in `block in run_daemonized'
/home/rails/public_html/my_app/shared/bundle/ruby/1.9.1/gems/god-0.11.0/lib/god/cli/run.rb:91:in `fork'
/home/rails/public_html/my_app/shared/bundle/ruby/1.9.1/gems/god-0.11.0/lib/god/cli/run.rb:91:in `run_daemonized'
/home/rails/public_html/my_app/shared/bundle/ruby/1.9.1/gems/god-0.11.0/lib/god/cli/run.rb:21:in `dispatch'
/home/rails/public_html/my_app/shared/bundle/ruby/1.9.1/gems/god-0.11.0/lib/god/cli/run.rb:8:in `initialize'
/home/rails/public_html/my_app/shared/bundle/ruby/1.9.1/gems/god-0.11.0/bin/god:122:in `new'
/home/rails/public_html/my_app/shared/bundle/ruby/1.9.1/gems/god-0.11.0/bin/god:122:in `<top (required)>'
/home/rails/public_html/my_app/shared/bundle/ruby/1.9.1/bin/god:19:in `load'
/home/rails/public_html/my_app/shared/bundle/ruby/1.9.1/bin/god:19:in `<main>'

我还在god日志文件中看到以下几行

***********************************************************************
*
* Event conditions are not available for your installation of god.
* You may still use and write custom conditions using the poll system
*
***********************************************************************

另外，下面是IRB的输出

[rails@x-rws1 current]$ RAILS_ENV=staging script/console 
Loading staging environment (Rails 2.3.11)
irb: warn: can't alias exit from irb_exit.
ruby-1.9.2-p180 :001 > God::EventHandler.load
Operation not permitted
/home/rails/public_html/my_app/shared/bundle/ruby/1.9.1/gems/polyglot-0.3.1/lib/polyglot.rb:64:in `require'
/home/rails/public_html/my_app/shared/bundle/ruby/1.9.1/gems/polyglot-0.3.1/lib/polyglot.rb:64:in `require'
/home/rails/public_html/my_app/shared/bundle/ruby/1.9.1/gems/activesupport-2.3.11/lib/active_support/dependencies.rb:184:in `require'
/home/rails/public_html/my_app/shared/bundle/ruby/1.9.1/gems/god-0.11.0/lib/god/event_handlers/netlink_handler.rb:1:in `<top (required)>'
/home/rails/public_html/my_app/shared/bundle/ruby/1.9.1/gems/polyglot-0.3.1/lib/polyglot.rb:64:in `require'
/home/rails/public_html/my_app/shared/bundle/ruby/1.9.1/gems/polyglot-0.3.1/lib/polyglot.rb:64:in `require'
/home/rails/public_html/my_app/shared/bundle/ruby/1.9.1/gems/activesupport-2.3.11/lib/active_support/dependencies.rb:184:in `require'
/home/rails/public_html/my_app/shared/bundle/ruby/1.9.1/gems/god-0.11.0/lib/god/event_handler.rb:22:in `load'
(irb):1:in `irb_binding'
/home/rails/.rvm/rubies/ruby-1.9.2-p180/lib/ruby/1.9.1/irb/workspace.rb:80:in `eval'
/home/rails/.rvm/rubies/ruby-1.9.2-p180/lib/ruby/1.9.1/irb/workspace.rb:80:in `evaluate'
/home/rails/.rvm/rubies/ruby-1.9.2-p180/lib/ruby/1.9.1/irb/context.rb:254:in `evaluate'
/home/rails/.rvm/rubies/ruby-1.9.2-p180/lib/ruby/1.9.1/irb.rb:159:in `block (2 levels) in eval_input'
/home/rails/.rvm/rubies/ruby-1.9.2-p180/lib/ruby/1.9.1/irb.rb:273:in `signal_status'
/home/rails/.rvm/rubies/ruby-1.9.2-p180/lib/ruby/1.9.1/irb.rb:156:in `block in eval_input'
/home/rails/.rvm/rubies/ruby-1.9.2-p180/lib/ruby/1.9.1/irb/ruby-lex.rb:243:in `block (2 levels) in each_top_level_statement'
/home/rails/.rvm/rubies/ruby-1.9.2-p180/lib/ruby/1.9.1/irb/ruby-lex.rb:229:in `loop'
/home/rails/.rvm/rubies/ruby-1.9.2-p180/lib/ruby/1.9.1/irb/ruby-lex.rb:229:in `block in each_top_level_statement'
/home/rails/.rvm/rubies/ruby-1.9.2-p180/lib/ruby/1.9.1/irb/ruby-lex.rb:228:in `catch'
/home/rails/.rvm/rubies/ruby-1.9.2-p180/lib/ruby/1.9.1/irb/ruby-lex.rb:228:in `each_top_level_statement'
/home/rails/.rvm/rubies/ruby-1.9.2-p180/lib/ruby/1.9.1/irb.rb:155:in `eval_input'
/home/rails/.rvm/rubies/ruby-1.9.2-p180/lib/ruby/1.9.1/irb.rb:70:in `block in start'
/home/rails/.rvm/rubies/ruby-1.9.2-p180/lib/ruby/1.9.1/irb.rb:69:in `catch'
/home/rails/.rvm/rubies/ruby-1.9.2-p180/lib/ruby/1.9.1/irb.rb:69:in `start'
/home/rails/.rvm/rubies/ruby-1.9.2-p180/bin/irb:16:in `<main>'
 => false 

Answer 1

我意识到，由于依赖于netlink_handler_ext，所以只能从根用户启动上帝。因此，即使您以非sudo用户的身份安装上帝gem，您仍然必须使用sudo来启动上帝。因此，我最终不得不将root权限分配给rails用户，并使用rvmsudo启动god。