Github error – fatal: Unable to look up github.com (port 9418) (Name or service not known)

lanqilovezs

于 2014-04-06 17:05:23 发布

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本文介绍了一种在Rails应用中通过Gemfile添加外部Git仓库依赖时遇到的错误及解决方案。当尝试安装包含Git仓库地址的Gem时，可能会出现无法解析github.com域名的问题。文章提供了一个临时解决方案，即修改/etc/hosts文件来手动指定GitHub的IP地址。

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I was trying to add a gem to a Rails3 app gemfile directing it to a git repo by:

1	`gem 'example', :git => "git://github.com/gituser/example.git"`

While bundle install, I got the error message:

 
        fatal: Unable to look up github.com (port 9418) (Name or service not known)

I tried git clone -q git://github.com/gituser/example.git or rails plugin installgit://github.com/gituser/example.git, still I got the same error message. It seems that Github has recently updated DNS and the changes haven’t propagated yet. You can use a workaround:

Run ping github.com and read the current IP

Go to /etc/hosts on your Rails server (assuming its Linux) and add the following line:

 
          207.97.227.239 github.com wiki.github.com gist.github.com assets0.github.com assets1.github.com assets2.github.com assets3.github.com

where instead of 207.97.227.239 type it the current Github IP

It is suggested to remove this line once the DNS is up and working again.