Q. How do I change existing name server IP address? How do I configure DNS name server IP address under Ubuntu Linux / Debian Linux? How do I configure DNS name resolution under Ubuntu Linux?
A. You need to edit /etc/resolv.conf file under Debian / Ubuntu Linux to set Name server IP address that the resolver should query. Up to 3 name server internet IP address can be defined. If there are multiple servers, the resolver library queries them in the order listed.
Ubuntu Linux Configure DNS Name resolution
Type the following command, enter:
$ sudo vi /etc/resolv.conf
Or use nano text editor:
$ sudo nano /etc/resolv.conf
Append your ISP name server or free fast dns nameservers IP address as follows:
nameserver 208.67.222.222
nameserver 208.67.220.220
nameserver 202.51.5.52
Save and close the file. Test your dns configuration by typing the following commands:
$ host yahoo.com
$ nslookup google.com
$ ping nixcraft.in
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{ 8 comments… read them below or add one }
I wonder if you are not missing something in the command:
$ sudo /etc/resolv.conf
What about:
$ sudo nano /etc/resolv.conf
or something?
Carl,
Thanks for the heads up. The faq has been updated.
On Ubuntu the settings may get overwritten and will certainly get overwritten after a reboot. This is because Ubuntu dynamically generates the /etc/resolv.conf file.It generates this from file a template where it gives you convenient hooks to add in your own static nameserver definitions. Here is the more modern method.
Edit the template’s tail file:
sudo vim /etc/resolvconf/resolv.conf.d/tail
Add your nameserver lines:
nameserver 208.67.222.222
nameserver 208.67.220.220
nameserver 202.51.5.52
Save the file and then regenerate the resolv.conf file:
sudo /etc/init.d/resolvconf restart
–
Noah
@Noah
Default installation of Ubuntu Server 9.04 does not have this ‘feature’. /etc/resolvconf/ does not exist.
@Jaymes,
No it is available and /etc/resolv.conf file do exits for Ubuntu 9.04. It is part of default Linux C library.
@Noah, you need to setup dhclient to avoid overwriting, see:
How To: Make Sure /etc/resolv.conf Never Get Updated By DHCP Client
how about restarting network? it should or not?
Dear Team,
How do i can assign hostname & IP address in Ubuntu? If By using sudo? then how to install sudo…?
Thanks & Regards,
Satish.
Hello,
It is perhaps silly question but I don’t really understand from where should I take ip addresses which should be added to /etc/resolv.conf.
I am speaking of those:
nameserver 208.67.222.222
nameserver 208.67.220.220
nameserver 202.51.5.52
Shall I ask my network provider about that or there is an easier method?
Thank you for help!