当resolv.conf被覆盖时，如何设置DNS？

#1 楼

$ sudo vim /etc/resolvconf/resolv.conf.d/base

nameserver 8.8.8.8
nameserver 8.8.4.4

$ sudo resolvconf -u

   /etc/resolvconf/resolv.conf.d/base
          File  containing  basic  resolver  information.  The lines in this 
          file are included in the resolver configuration file even when no
          interfaces are configured.

   /etc/resolvconf/resolv.conf.d/head
          File to be prepended to the dynamically generated resolver 
          configuration file.  Normally this is just a comment line.

   /etc/resolvconf/resolv.conf.d/tail
          File to be appended to the dynamically generated resolver 
          configuration file.  To append nothing, make this  an  empty  
          file.   This file is a good place to put a resolver options line 
          if one is needed, e.g.,

              options inet6

#2 楼

nameserver 8.8.8.8

nameserver 8.8.4.4

sudo service network-manager restart

# Dynamic resolv.conf(5) file for glibc resolver(3) generated by resolvconf(8)
#     DO NOT EDIT THIS FILE BY HAND -- YOUR CHANGES WILL BE OVERWRITTEN
nameserver 8.8.4.4
nameserver 127.0.1.1

DNS:             208.67.222.222
DNS:             208.67.220.220

;; Query time: 28 msec
;; SERVER: 8.8.4.4#53(8.8.4.4)

sudo vim /etc/dhcp/dhclient.conf

supersede domain-name-servers 8.8.8.8;

DNS:             8.8.8.8

DNS:             8.8.8.8    
DNS:             208.67.222.222
DNS:             208.67.220.220

#3 楼

server=8.8.8.8
server=8.8.4.4

Oct 21 23:00:54 mylaptop dnsmasq[8611]: using nameserver 8.8.8.8#53
Oct 21 23:00:54 mylaptop dnsmasq[8611]: using nameserver 8.8.4.4#53

#4 楼

iface eth0 inet static
address 192.168.3.3
netmask 255.255.255.0
gateway 192.168.3.1
dns-search example.com
dns-nameservers 192.168.3.45 192.168.8.10

#5 楼

#6 楼

$ sudo nano /etc/resolv.conf

nameserver 8.8.8.8

$ sudo chattr +i /etc/resolv.conf

#7 楼

/etc/dhcp3/dhclient.conf

supersede domain-name-servers <dns_ip_address1>,<dns_ip_address2>;

#8 楼

#9 楼

nano /etc/network/interfaces

# This file...
# and how to activate...

# The loopback...
auto local
iface lo inet loopback

# The primary network interface 
auto eth0
iface eth0 inet dhcp

# This file...
# and how to activate...

# The loopback...
auto local
iface lo inet loopback

# The primary network interface 
#iface eth0 inet dhcp
iface eth0 inet static
address x.x.x.x
netmask 255.255.255.0
gateway x.x.x.x

#nameservers
# you may not need dns-search
# I use it because I'm running this on a Windows network 
# so its useful to have
# dns-search x.y 
dns-nameservers 4.4.4.4 8.8.8.8

#10 楼

# sudo ln -sf /run/systemd/resolve/resolv.conf /etc/resolv.conf

#11 楼

#!/bin/bash
# Author: Serg Kolo
# Date: May 6, 2015
# Description: this script checks all settings for connections in 
# /etc/NetworkManager/system-connections/ , and if there's no custom
# dns set , this script sets it;
# NOTE: run sudo service network-manager restart after running this script

set -x

for file in /etc/NetworkManager/system-connections/* ; do
        grep 'dns=208.67.220.220;' "$file"  || ( awk '{print;if (=="[ipv4]"){getline; print "method=auto\ndns=208.67.220.
220;\nignore-auto-dns=true"}}' "$file" > .tmpfile && ( cat .tmpfile > "$file") )
done

[main]
plugins=ifupdown,keyfile,ofono
#dns=dnsmasq
dns=208.67.222.222

[ifupdown]
managed=false

dns=plugin1,plugin2, ... List DNS plugin names separated by ','. 

#12 楼

$ echo 'nameserver 1.1.1.1' | sudo tee /etc/resolvconf/resolv.conf.d/base

$ sudo resolvconf -u

$ sudo systemctl restart dnsmasq.service

#13 楼

$ sudo nano /etc/network/interfaces

$ sudo apt-get install nano -y

#14 楼

$ sudo sed -i 's/dns\x3Ddnsmasq/\x23dns\x3Ddnsmasq/' \
   /etc/NetworkManager/NetworkManager.conf

$ echo 'supersede domain-name-servers 4.2.2.1,4.2.2.3,4.2.2.5,4.2.2.4,4.2.2.1,4.2.2.2;' | \
   sudo tee --append /etc/dhcp/dhclient.conf

$ sudo service network-manager restart

#15 楼

dns=none

nohook resolv.conf

#16 楼

#17 楼

resolv_conf=NO

#18 楼

#!/usr/bin/sh

if [  == "enp0s11" -a  == "up" ]
then
        echo "Setting my DNS ( is )" | logger

        # disable default DNS
        nmcli device mod enp0s11 ipv4.ignore-auto-dns yes

        # Substitute our own DNS, in the desired order
        nmcli device mod enp0s11 ipv4.dns "10.0.1.101 10.0.1.1"
fi

systemctl restart NetworkManager.service
cat /etc/resolv.conf