localhost.localdomain
 

I am working with Gnome/Fedora Core 3. Whenever I attempt to login, I get the dialog window:

=============================================
Could not look up internet address for localhost.localdomain
This will prevent GNOME from operating correctly.
It may be possible to correct the problem by adding
localhost.localdomain to the file /etc/hosts
[Log in Anyway] [Try Again]
=============================================

The above is the result of some errant action I took, but I do not know what. I seek guidance on reversing the error and fixing the problem. When I "Log in Anyway", all appears well.

Make sure the localhost.localdomain is in /etc/hosts like below

Reddazz,

What was it that I did to cause this /etc/hosts update to become necessary?

And why did not that [network?] process automatically make the update itself?

I don't know, but its obviously something to do with network configuration. I have noticed that if you use KDE, this error does not show up.

Reddazz,

FWIW, the only network configuration action I took was to create a dialup to my ISP. I surmise that had to be what triggered the condition, but why that process did not also update /etc/hosts is beyond me. In any event, putting the code you provided in /etc/hosts seems to have corrected the matter. Thank you for your assistance.

I can't believe it! I am having the same problem, and it started after I created my dial-up account, too. The only difference is my message leaves out the .localdomain part ("Could not look up Internet address for localhost. This will prevent GNOME...")
I tried to fix with reddazz's code, but I can't find the correct file. I tried vi /etc/hosts at the terminal, but I just get a blank page, and I also tried to open it with Nautilus by navigating to /etc and double-clicking the hosts icon, but it says "Unable to access /etc/hosts."
What am I doing wrong?

Your hosts file probably doesn't exist, which would definitely cause this problem. Just open it, type in the line, and then save it.

Try running the network configuration tool and change the host name from there.

Thank you both for your posts. It's great to have the help. Would the best method for creating the file be to use vi from the terminal, add the code,

and save it as hosts?
Also, is it okay to use something beside localhost.localdomain (eg 127.0.0.1 anyname.anywhere anyname )?
Thanks again for your help!
P.S. I did try your suggestion reddazz, but I wasn't sure where to change the host name. The tool I used was system settings>network. Did I use the wrong one? That would be a lot easier than using vi for a beginner (like me:p).

Thats the right tool.

So, should I add anyname.anywhere under the DNS tab, and should I type it just like that? That's the only place that seems editable. The host tab is empty for me, which is why I was confused before.

You make the changes in the host tab. I will post the exact details when I am able to access my fedora core partition.

You definitely need the localhost.localdomain entry as some stuff relies on it. You can also give your computer another name (a machine can have many names associated with it).

Okay, start the network confiuration tool, go to the hosts tab, click on edit. For the ip address, you put 127.0.0.1, for the hostname put something that won't clash with other domains on the web e.g. myhost.mydomain.lan and for the aliases, you need to put the hostname e.g myhost as well as localhost.localdomain & localhost. So your dialg box would be something like below,
Make sure you save your changes before exiting.

Thank you both again! I can finally fix this problem that's been egging me for at least a month.:)
Thanks btmiller. That's why I don't like to barrel ahead on something this sensitive myself. I wasn't sure whether the localhost part was necessary; I probably would've left it out.

Your detailed instructions are also very much appreciated, reddazz. It's nice for a newbie to have someone actually run through a whole process sometimes to double-check their own method.
I just have one more question to bother you with. I'm not on a network (except for my dialup ISP), so should I put the lan part of Hostname: myhost.mydomain.lan in the hostname line?