配置github DNS 解决访问慢的问题

1.修改 hosts
sudo vim /etc/hosts

2.配置 dns
151.101.185.194 github.global.ssl.fastly.net
通过4查询IP替换 github.com
通过4查询IP替换 assets-cdn.github.com
通过4查询IP替换 assets-cdn.github.com
185.199.108.153 documentcloud.github.com
192.30.253.118 gist.github.com
185.199.108.153 help.github.com
192.30.253.120 nodeload.github.com
151.101.112.133 raw.github.com
23.21.63.56 status.github.com
192.30.253.1668 training.github.com
192.30.253.112 www.github.com
通过4查询IP替换 github.global.ssl.fastly.net
151.101.12.133 avatars0.githubusercontent.com
151.101.112.133 avatars1.githubusercontent.com

3.刷新 dscacheutil -flushcache

4.获取GitHub官方CDN地址，通过https://www.ipaddress.com输入域名获得IP

1. github.com
2. assets-cdn.github.com
3. github.global.ssl.fastly.net