> vi /etc/hosts
101.226.28.228 mirrors.aliyun.com
67.219.148.138 mirrorlist.centos.org
202.38.97.230 ftp.sjtu.edu.cn
202.121.199.235 mirrors.shu.edu.cn
202.202.1.140 mirrors.cqu.edu.cn
59.111.0.251 mirrors.163.com
61.174.55.3 mirror.jdcloud.com
101.6.8.193 mirrors.tuna.tsinghua.edu.cn
117.78.24.40 mirrors.huaweicloud.com
219.216.128.25 mirrors.neusoft.edu.cn
180.209.98.28 mirrors.njupt.edu.cn
218.104.71.170 centos.ustc.edu.cn
140.113.17.5 centos.cs.nctu.edu.tw
61.244.214.6 mirror.xtom.com.hk
36.255.124.203 mirror.qoxy.com
103.15.235.10 mirror.vodien.com
134.160.38.1 ftp.riken.jp
202.232.140.70 ftp.iij.ad.jp
150.65.7.130 ftp.jaist.ac.jp
61.244.214.6 mirrors.cat.net
202.201.0.160 mirror.lzu.edu.cn
192.99.68.38 0.centos.pool.ntp.org
193.228.143.12 1.centos.pool.ntp.org
203.107.6.88 2.centos.pool.ntp.org
193.228.143.23 3.centos.pool.ntp.org
147.75.93.107 mirror.centos.org
185.141.165.254 download.fedoraproject.org
> vi /etc/resolv.conf
nameserver 114.114.114.114