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回答:
GitHub 官方发布:https://blog.github.com/2018-02-23-weak-cryptographic-standards-removed/
从 2018 年 02 月 23 日起,GitHub 官方永久删除了对弱加密标准的支持,导致 cocoaPods 无法连接 GitHub 进行更新,报错信息:“[!] Failed to connect to GitHub to update the CocoaPods/Specs specs repo - Please check if you are offline, or that GitHub is down”。
解决该问题需要更新本地 openssl,rube,cocoaPod。参考更新步骤:
$ which openssl /usr/bin/openssl $ openssl version OpenSSL 0.9.8zh 14 Jan 2016 $ /usr/bin/ruby -e "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/master/install)" $ brew update $ brew install openssl $ brew upgrade openssl `` If you need to have this software first in your PATH run: echo 'export PATH="/usr/local/opt/openssl/bin:$PATH"' >> ~/.bash_profile $ echo 'export PATH="/usr/local/opt/openssl/bin:$PATH"' >> ~/.bash_profile $ source ~/.bash_profile $ which openssl /usr/local/opt/openssl/bin/openssl $ openssl version OpenSSL 1.0.2n 7 Dec 2017 $ brew install rbenv ruby-build $ echo 'export PATH="$HOME/.rbenv/bin:$PATH"' >> ~/.bash_profile $ echo 'if which rbenv > /dev/null; then eval "$(rbenv init -)"; fi' >> ~/.bash_profile $ source ~/.bash_profile $ rbenv install --list Available versions: 1.8.5-p52 1.8.5-p113 1.8.5-p114 1.8.5-p115 1.8.5-p231 1.8.6 : 2.1.0 2.1.1 2.1.2 : $ rbenv install 2.5.0 $ rbenv versions * system (set by /Users/username/.rbenv/version) 2.5.0 $ ruby --version ruby 2.0.0p648 (2015-12-16 revision 53162) [universal.x86_64-darwin16] $ rbenv global 2.5.0 $ rbenv versions system * 2.5.0 (set by /Users/username/.rbenv/version) $ ruby --version ruby 2.5.0p0 (2013-12-25 revision 44422) [x86_64-darwin16.0] $ gem install cocoapods -n /usr/local/bin $ which pod /usr/local/bin/pod $ pod --version 1.4.0
然后执行命令:
$ pod update
参考链接:https://qiita.com/satoshi-iwaki/items/ed2c267127dcc80baa21 (注意:更新 ruby 时请选择较高的版本,部分低版本将被淘汰)。