[SOLVED] sudo unable to resolve host

[Darkade]

Every time I use sudo the terminal says

sudo: unable to resolve host icarus-laptop

It works but that didn't happened before, ideas? Thanks

[PmDematagoda]

Post the output of:-

cat /etc/hosts

[Darkade]

ivan@icarus-laptop:~$ cat /etc/hosts
127.0.0.1 localhost
127.0.1.1 icarus-laptop.actuaria_rulz

# The following lines are desirable for IPv6 capable hosts
::1 ip6-localhost ip6-loopback
fe00::0 ip6-localnet
ff00::0 ip6-mcastprefix
ff02::1 ip6-allnodes
ff02::2 ip6-allrouters
ff02::3 ip6-allhosts

[PmDematagoda]

Open the hosts file for editing with:-

gksudo gedit /etc/hosts

and edit it to make it look like this:-

127.0.0.1 localhost
127.0.1.1 icarus-laptop

# The following lines are desirable for IPv6 capable hosts
::1 ip6-localhost ip6-loopback
fe00::0 ip6-localnet
ff00::0 ip6-mcastprefix
ff02::1 ip6-allnodes
ff02::2 ip6-allrouters
ff02::3 ip6-allhosts

save the file.

That should fix the problem.

[Darkade]

Thanks it worked

[rhodry]

This happened to me after upgrade to Hardy Heron. (which may or may not be relevant)

Check your /etc/hosts file.

My machine in question is "greywolf" and my domain is "home.net". I use DHCP but I have an IP address fixed by my router as 192.168.1.xx. The entry I have in the /etc/hosts file for that IP address is normally:

192.168.1.xx greywolf.home.net greywolf

The system (I assume network manager) had added the domain name to the end of the line again - ie

192.168.1.xx greywolf.home.net greywolf.home.net

I just removed the 2nd ".home.net" off the end and name resolution worked again.

This is not the 1st time this has happened to my /etc/hosts, but it was the 1st time it had caused name resolution errors in the terminal.

I just wish they would use a decent network manager like 'wicd' as the default instead of the crap they use now. Anyway, hope this helps?

rhodry.

[selda]

Originally Posted by rhodry This happened to me after upgrade to Hardy Heron. (which may or may not be relevant) Check your /etc/hosts file. My machine in question is "greywolf" and my domain is "home.net". I use DHCP but I have an IP address fixed by my router as 192.168.1.xx. The entry I have in the /etc/hosts file for that IP address is normally: 192.168.1.xx greywolf.home.net greywolf The system (I assume network manager) had added the domain name to the end of the line again - ie 192.168.1.xx greywolf.home.net greywolf.home.net I just removed the 2nd ".home.net" off the end and name resolution worked again. This is not the 1st time this has happened to my /etc/hosts, but it was the 1st time it had caused name resolution errors in the terminal. I just wish they would use a decent network manager like 'wicd' as the default instead of the crap they use now. Anyway, hope this helps? rhodry.

I had similar problems. I use wicd and during upgrade it was unistalled, and replaced by network manager, which was not working.

[leohart]

I had this problem as well after I upgraded to Hardy Heron. ^_^ Add/Remove... stopped working correctly as well and I didn't know what is going on. After this fix, things seem to get back to normal.

[falkTX]

I had that problem when installing FireStarter and trying to share a connection,
but now it's ok!! fixed!!

Thank you guys!

[linuksamiko]

I have the same problem, after updating to hardy (RC1). This problem should be fixed before the final releas!