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I have just installed ubuntu 12.04. And I am a beginner on Linux. So, how can I add the DNS suffix in this OS. Please help..

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Right now I got no Ubuntu install to test this with, but the normal way to do this is by adding a new line with search mydomain.tld in /etc/resolv.conf –  Hennes Aug 6 '13 at 8:43
Could you explain what you mean by DNS suffix? –  Oli Aug 6 '13 at 9:21

3 Answers 3

In Debian and Ubuntu the system hostname is a short name --- this name does not have a domain name suffix. Domain name suffixes for a machine are determined by DNS which is outside the machine itself.

Certain applications running on the local machine need to be given one or more fully qualified domain names for the local machine. Those applications should be configured accordingly.

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In the past you did this by modifying /etc/resolv.conf. Now /etc/resolv.conf is managed by resolvconf. So now you do:

  • Create a file named /etc/resolvconf/resolv.conf.d/tail
  • Add the line search mydomain.tld to that file
  • Run sudo resolvconf -u
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I have achieved this by adding...

append domain-name "na.my-domain.net";



and then...

sudo restart network-manager
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