你可以试着在verbose模式下运行:

pod install --verbose

这将告诉你可可豆荚的作用:

Setting up CocoaPods master repo

Cloning spec repo `master` from `https://github.com/CocoaPods/Specs.git` (branch `master`)
  $ /usr/bin/git clone 'https://github.com/CocoaPods/Specs.git' master
  Cloning into 'master'...

(如此处所示)

对我来说，上面的步骤花了很长时间，因为回购(2016年12月)现在是1.1 GB

当CocoaPods这样做的时候，它会下载整个specs repo到~/. CocoaPods。这可能需要一段时间，这取决于您的连接。我会试着先用pod设置明确地做它

也许这些信息会有帮助:

官方答案:http://blog.cocoapods.org/Master-Spec-Repo-Rate-Limiting-Post-Mortem/

作为本次讨论的结果https://github.com/CocoaPods/CocoaPods/issues/4989

简要: CocoaPods存储库从GitHub获取了大量数据，这就是问题所在。自1.0.0.beta.6版本以来已有更改。

本文档提供的提示:

If for whatever reason you cannot upgrade to version 1.0.0 just yet, you can perform the following steps to convert your clone of the Master spec-repo from a shallow to a full clone:

$ cd ~/.cocoapods/repos/master
$ git fetch --unshallow

我的第一次安装方法:

1. pod setup
2. Ctrl+C
After that I could find ~/.cocoapods/repos/ empty directory 
3. Download  https://github.com/CocoaPods/Specs/archive/master.zip
4. unpack it to ~/.cocoapods/repos/
5. Move to project folder
6. pod install --no-repo-update

而今天则需要将近15分钟

当你第一次运行它时，Pod安装或Pod安装会获取整个历史记录。你不需要那个提交历史。

pod setup
Ctrl +C
cd ~/.cocoapods/repos 
git clone --depth 1 https://github.com/CocoaPods/Specs.git master

在良好的网络连接(4Mbps)下，大约需要2分钟。主目录大约519M大。

从cocoapods 1.7.2开始，你可以使用cdn而不是github。它燃烧得很快，挂不起来。从cocopods 1.8.0开始，cdn是默认的。

To use the CDN source in your Podfile: If you don't have private specs: source 'https://cdn.cocoapods.org/' If you have private specs: source 'https://github.com/artsy/Specs.git' - source 'https://github.com/CocoaPods/Specs.git' + source 'https://cdn.cocoapods.org/' Doing this will break your Podfile.lock, so you are likely to need to run pod update to see the changes (be careful, this may update your Pods also). If you have a CI setup, it is recommended to cache the new repo dir as it is very small and would save even more time. With 1.7.2 it should be located at ~/.cocoapods/repos/cocoapods- (yes, with a -), but we're looking to improve the naming in an upcoming release.

更多信息:

CocoaPods 1.7.2 -主Repo CDN完成! CocoaPods 1.8测试版来了!

尝试这个命令来跟踪它的工作。

while true; do
  du -sh ~/.cocoapods/
  sleep 3
done