Ubuntu 18.04下修改DNS

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通过修改文件 /etc/resolv.conf 就可以修改dns

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# Use Google's public DNS servers.
nameserver 8.8.4.4
nameserver 8.8.8.8

但是以上方法只是临时有效，服务器重启后就恢复原样了，还是变成下面这样

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nameserver 127.0.0.53
search Home

怎么样才可以永久修改呢？

  1. 安装 resolvconf .

sudo apt install resolvconf

  1. 编辑 /etc/resolvconf/resolv.conf.d/head 添加以下内容:
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# Make edits to /etc/resolvconf/resolv.conf.d/head.
nameserver 8.8.4.4
nameserver 8.8.8.8
Restart the resolvconf service.
  1. 重启服务

sudo service resolvconf restart

Ubuntu 18.04 下面 修改ip及dns使用netplan

显示ip信息

ip addr show

显示路由信息

ip route show

编辑网络信息

vi /etc/netplan/*.yaml

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network:
  ethernets:
      eno1:
          addresses: [192.168.1.13/24]
          gateway4: 192.168.1.1
          dhcp4: true
          optional: true
          nameservers:
              addresses: [8.8.8.8,8.8.4.4]
  version: 2

应用配置:

netplan apply