sudo gem install cocoapods 报错处理1

一、错误信息

ERROR:  SSL verification error at depth 3: self signed certificate in certificate chain (19)
ERROR:  Root certificate is not trusted (/C=GB/ST=Greater Manchester/L=Salford/O=Comodo CA Limited/CN=AAA Certificate Services)
ERROR:  SSL verification error at depth 3: self signed certificate in certificate chain (19)
ERROR:  Root certificate is not trusted (/C=GB/ST=Greater Manchester/L=Salford/O=Comodo CA Limited/CN=AAA Certificate Services)
ERROR:  SSL verification error at depth 3: self signed certificate in certificate chain (19)
ERROR:  Root certificate is not trusted (/C=GB/ST=Greater Manchester/L=Salford/O=Comodo CA Limited/CN=AAA Certificate Services)
ERROR:  Could not find a valid gem 'cocoapods' (>= 0), here is why:
          Unable to download data from https://gems.ruby-china.com - SSL_connect returned=1 errno=0 peeraddr=111.6.166.76:443 state=error: certificate verify failed (self signed certificate in certificate chain) (https://gems.ruby-china.com/specs.4.8.gz)
ERROR:  SSL verification error at depth 3: self signed certificate in certificate chain (19)
ERROR:  Root certificate is not trusted (/C=GB/ST=Greater Manchester/L=Salford/O=Comodo CA Limited/CN=AAA Certificate Services)
ERROR:  SSL verification error at depth 3: self signed certificate in certificate chain (19)
ERROR:  Root certificate is not trusted (/C=GB/ST=Greater Manchester/L=Salford/O=Comodo CA Limited/CN=AAA Certificate Services)

二、问题分析

• 核心错误：网络环境（大概率是公司内网 / 代理）存在自签名证书，导致 RubyGems 无法信任远程仓库的证书链。
• 错误类型：深度 3 的 SSL 验证失败，提示 "证书链中存在自签名证书"（错误代码 19）。
• 不信任证书：系统不认可根证书 /C=GB/ST=Greater Manchester/L=Salford/O=Comodo CA Limited/CN=AAA Certificate Services。
• 直接原因：无法从 RubyGems 源（https://gems.ruby-china.com）下载数据，因 SSL 连接时证书验证失败，导致无法找到有效 gem 包 cocoapods。

三、解决办法

一劳永逸，直接配置 RubyGems 忽略 SSL 验证

1. 编辑 RubyGems 配置文件（没有则创建）：

sudo vi ~/.gemrc

2. 在文件中添加以下内容（按 i 进入编辑模式，粘贴后按 esc，输入 :wq 保存退出）：

ssl_verify_mode: 0
sources:
  - https://gems.ruby-china.com

3. 再次执行安装命令即可：

sudo gem install cocoapods