## gem source 无效
### 问题：
安装rails 时提示

[root@localhost ~]# gem install rails
ERROR: While executing gem ... (Gem::RemoteFetcher::FetchError)
Errno::ECONNRESET: Connection reset by peer - SSL_connect (https://api.rubygems.org/quick/Marshal.4.8/


原因是 rubygems.org 源被墙了，

### 解决办法：
https 改用 http

gem sources -a 'http://rubygems.org'
git sources --remove 'https://rubygems.org/'


### 补充
现在用taobao 源也不行了

[root@localhost ~]# gem sources -a 'http://ruby.taobao.org/'
Error fetching http://ruby.taobao.org/:
bad response Not Found 404 (http://ruby.taobao.org/specs.4.8.gz)