安装Puppet到快最后的一步了出现错误，有谁知道是什么原因么？？

[SharkIng]

debug模式后错误提示是这个样子的（Log中好像也是这样写的）：

----------- Application groups -----------
** cd /opt/puppet/share/puppet-dashboard; /opt/puppet/bin/bundle exec /opt/puppet/bin/rake -s -f /opt/puppet/share/puppet-dashboard/Rakefile cert:request RAILS_ENV=production
rake aborted!
Connection refused - connect(2)

Tasks: TOP => cert:request
(See full trace by running task with --trace)
** /opt/puppet/bin/puppet cert --sign pe-internal-dashboard --color=false
Error: Could not find certificate request for pe-internal-dashboard
** cd /opt/puppet/share/puppet-dashboard; /opt/puppet/bin/bundle exec /opt/puppet/bin/rake -s -f /opt/puppet/share/puppet-dashboard/Rakefile cert:retrieve RAILS_ENV=production
rake aborted!
Connection refused - connect(2)

Tasks: TOP => cert:retrieve
(See full trace by running task with --trace)




用的是网站上下载的最新安装包，前面都很正常到这最后一部分了出问题，谁知道是为什么么？？