[CentOS] /etc/hosts missing localhost?

Bill Campbell centos at celestial.com
Mon Jul 28 21:58:23 UTC 2008

Following up, info below.

On Tue, Jul 22, 2008, Bill Campbell wrote:
>On Tue, Jul 22, 2008, Rudi Ahlers wrote:
>> Bill Campbell wrote:
>>> On Mon, Jul 21, 2008, Jim Perrin wrote:
>>>> On Mon, Jul 21, 2008 at 9:20 PM, Bill Campbell <centos at celestial.com> wrote:
>>>>> Is there any reason why /etc/hosts would be missing the line,
>>>>> localhost?
>>>> Nope. It's there by default in some form or another.
>>>> By default, it usually looks like this ->
>>>>       installname  localhost.localdomain  localhost
>>>> ::1          localhost6.localdomain6   localhost6
>>>> If you don't have anything like this in your /etc/hosts, you either
>>>> need to find a mirror and begin yelling at responsible parties, or
>>>> stalk whomever else has root on this particular machine.
>>> I guess I could yell at myself as I'm doing kickstart installs from
>>> a local mirror.
>>> I found the same thing on two CentOS 5.1 installs here, one on a
>>> VMware VM, the other on real iron.  The wierd thing is that the
>>> base VMware VM I have that I copy to create new VMs looks OK.
>>> Now I'm going to have to poke around to see what's causing this
>>> line to be deleted.
>>> Bill
>> I had a similar problem using OpenVZ images, installed from kickstart -  
>> almost like it's leaving some stuff out by default. So I ended up  
>> creating the file manually and adding it to the kickstart file to be  
>> copied over.
>The file was OK after the kickstart install, and after a ``yum update''.
>We install about 240 packages under the OpenPKG portable package management
>system which may have caused this, but I have not seen this problem prior
>to CentOS 5.2.
>I did not check to see the status of the /etc/hosts file after configuring
>the network with system-config-network, and before installing OpenPKG and
>its packages.  I may create a new VM, and run through the network
>configuration etc. to see where this is happening (VMware snapshots and
>revert sure simplify things like this :-).

I just did a fresh kickstart install of CentOS 5.2 as a VMware
virtual machine, and the localhost line is missing
after doing ``yum update'' when I run ``system-config-network''
to assign a static IP address to the new VM.

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