序言

github 时有打不开的情况，为此很是烦恼，这里分享一下如何解决这种问题，其实问题的本质是在访问github网页时无法通过github.com的二级域名进行动态域名解析。

解决方案

手动配置静态文件hosts，将该域名和IP的映射关系添加到静态文件中，在访问地址时会优先通过Hosts文件进行域名解析。

解决步骤

1. 找到github.com域名对应的IP地址，输入网址：站长工具Dns查询 找出最快的IP地址
2. 打开终端，输入 sudo vim /etc/hosts
3. 追加或者更改 本地hosts文件，本次结合命令 i --> 添加ip --> esc --> :wq （i: 进入编辑模式，esc: 退出编辑模式，:wq 保存文件并退出）

##
# Host Database
#
# localhost is used to configure the loopback interface
# when the system is booting.  Do not change this entry.
##
199.232.4.133 raw.githubusercontent.com
192.30.253.119 gist.github.com
54.169.195.247 api.github.com
185.199.111.153 assets-cdn.github.com
151.101.76.133 raw.githubusercontent.com
151.101.108.133 user-images.githubusercontent.com
151.101.76.133 gist.githubusercontent.com
151.101.76.133 cloud.githubusercontent.com
151.101.76.133 camo.githubusercontent.com
151.101.76.133 avatars0.githubusercontent.com
151.101.76.133 avatars1.githubusercontent.com
151.101.76.133 avatars2.githubusercontent.com
151.101.76.133 avatars3.githubusercontent.com
151.101.76.133 avatars4.githubusercontent.com
151.101.76.133 avatars5.githubusercontent.com
151.101.76.133 avatars6.githubusercontent.com
151.101.76.133 avatars7.githubusercontent.com
151.101.76.133 avatars8.githubusercontent.com

127.0.0.1	localhost
255.255.255.255	broadcasthost
::1             localhost
50.116.34.243 sublime.wbond.net
127.0.0.1       www.test.com
127.0.0.1       local.erp.com
127.0.0.1     activate.xmind.net
127.0.0.1     practivate.xmind.net
127.0.0.1     lm.licenses.xmind.net
127.0.0.1     lmlicenses.xmind.net
127.0.0.1     www.xmind.net
127.0.0.1     na1r.services.xmind.net
#GitHub Start

140.82.113.3 github.com
140.82.121.3 github.com
140.82.121.4 github.com
140.82.112.3 github.com
140.82.114.4	github.com
20.27.177.113 github.com
20.248.137.48 github.com
20.200.245.247 github.com
20.205.243.166 github.com

140.82.113.4 gist.github.com
199.232.5.194 github.global.ssl.fastly.net
185.199.109.153 assets-cdn.github.com
185.199.110.153 assets-cdn.github.com
185.199.111.153 assets-cdn.github.com
199.232.96.133 raw.githubusercontent.com
199.232.96.133 gist.githubusercontent.com
199.232.96.133 cloud.githubusercontent.com
199.232.96.133 camo.githubusercontent.com
199.232.96.133 avatars.githubusercontent.com 
199.232.96.133 avatars0.githubusercontent.com
199.232.96.133 avatars1.githubusercontent.com
199.232.96.133 avatars2.githubusercontent.com
199.232.96.133 avatars3.githubusercontent.com
199.232.96.133 avatars4.githubusercontent.com
199.232.96.133 avatars5.githubusercontent.com
199.232.96.133 avatars6.githubusercontent.com
199.232.96.133 avatars7.githubusercontent.com
199.232.96.133 avatars8.githubusercontent.com
103.228.130.27 http://github.global.ssl.fastly.net
#GitHub End