Linux 添加DNS配置

Centos7.5 系统，保存退出后自动生效

vi /etc/resolv.conf

#阿里云DNS
nameserver 223.5.5.5
nameserver 223.6.6.6

#百度DNS
nameserver 180.76.76.76

#腾讯DNS
nameserver 119.29.29.29 

#google DNS
nameserver 8.8.8.8

#114 DNS
nameserver 114.114.114.114
nameserver 114.114.115.115