Shulou(Shulou.com)05/31 Report--

This article mainly introduces the relevant knowledge of how linux modifies dns, the content is detailed and easy to understand, the operation is simple and fast, and has a certain reference value. I believe you will gain something after reading this linux article on how to modify dns. Let's take a look at it.

Methods: 1. Use the "vi / etc/resolv.conf" command to modify the dns;2, use the "vi / etc/sysconfig/network-scripts/ifcfg-eth0" command to modify the dns items in the file, and restart the network card to take effect after modification.

The operating environment of this tutorial: linux7.3 system, Dell G3 computer.

How does linux modify dns

Method 1. Modify / etc/resolv.conf (recommended)

[root@bin ~] # vi / etc/resolv.confnameserver 8.8.8.8nameserver 8.8.4.4

The modification will take effect immediately without any additional processing! Therefore, this method is recommended.

Method 2. Modify / etc/sysconfig/network-scripts/ifcfg-eth0 file

[root@bin ~] # vi / etc/sysconfig/network-scripts/ifcfg-eth0DEVICE=eth0ONBOOT=yesBOOTPROTO=dhcpDNS2=8.8.4.4TYPE=EthernetDNS1=8.8.8.8IPV6INIT=noUSERCTL=noPEERDNS=yes

This method will not take effect until the Nic is restarted. You can restart the Nic with the following command:

Service network restart

How to check the native DNS

1. View / etc/resolv.con file

[oboth@localhost ~] $cat / etc/resolv.conf nameserver 114.114.114.114nameserver 8.8.8.8

2. Use the nslookup command to view DNS information

[oboth@localhost ~] $nslookup qq.comServer: 114.114.114.114Address: 114.114.114.114#53Name: qq.comAddress: 123.151.137.18Name: qq.comAddress: 61.129.7.47Name: qq.comAddress: 183.3.226.35

3. Use the dig command to view DNS information

[oboth@localhost] $dig; DiG 9.11.25-RedHat-9.11.25-2.fc33;; global options: + cmd;; Got answer:;;-> > HEADER

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