Question

sudo: unable to resolve host [hostname]

Posted March 17, 2014 124.5k views
Hi there, I just created my first droplet today. I added an user and give it root privileges. Whenever I "sudo", I get "unable to resolve host [myhostname]". Although my command is executed fine, I still want to get rid of this? Belows are my /etc/hostname and /etc/hosts knguyen@knguyen:~$ cat /etc/hostname knguyen knguyen@knguyen:~$ cat /etc/hosts 127.0.0.1 localhost ::1 localhost ip6-localhost ip6-loopback fe00::0 ip6-localnet ff00::0 ip6-mcastprefix ff02::1 ip6-allnodes ff02::2 ip6-allrouters

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5 answers

You may add your domain name to your /etc/hosts

like this

knguyen@knguyen:~$ cat /etc/hosts
127.0.0.1 knguyen

This thread helped me: http://askubuntu.com/questions/59458/unable-to-resolve-host-none

Hello,

Even I have similar issue,
Here is the following if type “cat /etc/hosts” in CLI

127.0.0.1 localhost
::1 localhost ip6-localhost ip6-loopback
ff02::1 ip6-allnodes
ff02::2 ip6-allrouters

127.0.1.1 fevertags_pi

Here fevertags_pi is the host name. When I try to edit this, it says permission denied and I’m not able to add anything

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