Ubuntu change dns

现象

• Can not ping, but curl ok
• apt can not update
  • Could not resolve 'nvidia.github.io'
• Can not ping 8.8.8.8, but 223.5.5.5(ali dns) ok

如何解决

• 更改dns

• ubuntu 18

  sudo vim /etc/systemd/resolved.conf
  DNS=223.5.5.5
  sudo systemctl restart systemd-resolved.service
  

• 检查
• systemd-resolve --status

Global
    DNS Servers: 223.5.5.5

Reference

• Ubuntu 18.04 永久修改DNS的方法 - 51cto