/etc/hosts and system entries

Simo Sorce ssorce at redhat.com
Thu Sep 27 14:07:22 UTC 2007

On Thu, 2007-09-27 at 09:59 -0400, Harry Hoffman wrote:
> Hi,
> So, /etc/hosts comes setup by default (i.e. after kickstart install)
> # Do not remove the following line, or various programs
> # that require network functionality will fail.
>               localhost.localdomain localhost
> I'm fairly certain to not too long ago (redhat-9 perhaps) the hostname 
> of the system was also added to the localhost entry:
>  my.host.com my localhost.localdomain localhost
> This had the distinct advantage that when apps (i.e. yum-updatesd) sent 
> mail from the system via a mail host then address would appear as:
> root at my.host.com  instead of root at localhost.com

But breaks miserably in other situations when you wanto to resolve the
ip address of your machine. A typical example is kerberos and winbindd
(also using kerberos).

> Am I remembering correctly, in terms of how I believe it used to be? If 
> so, anyone know why it changed?

Breaks stuff.


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