[CentOS] /etc/hosts not resolving hostnames

Fri Apr 8 19:45:22 UTC 2011
Johan Martinez <jmartiee at gmail.com>

On Fri, Apr 8, 2011 at 2:39 PM, Dvorkin, Asya <dvorkias at umdnj.edu> wrote:

> Try flushing DNS cache:
>
> /etc/init.d/nscd restart
>
>
nscd is not running.



> On Apr 8, 2011, at 3:31 PM, Johan Martinez wrote:
>
> This is working fine on another CentOS system. This particular install
> where host command is failing is trimmed down install using kickstart file.
> It is working on a system where install is default 'Server non-GUI', option
> given during interactive CD install. I guess this has to do with some
> missing package. Any clues??
>
> jM.
>
> On Fri, Apr 8, 2011 at 2:01 PM, John R Pierce <pierce at hogranch.com> wrote:
>
>> On 04/08/11 11:24 AM, Johan Martinez wrote:
>> > I have modified /etc/hosts file with IP address and hostname entries.
>> > However, host command is returning 'Host vhost1.example.com
>> > <http://vhost1.example.com> not found: 3(NXDOMAIN)'. Also, apache is
>> > returning error on start as '[error] (EAI 2)Name or service not known:
>> > Could not resolve host name vhost1.example.com
>> > <http://vhost1.example.com> -- ignoring!' . The ssh worked fine and
>> > resolved the hostname correctly (ssh from same system to itself - just
>> > for test). Am I missing something here? I thought /etc/hosts will be
>> > referred for all lookups. Any help??
>>
>> the 'hosts' command (as well as dig, and nslookup) go directly to DNS,
>> they do not look at /etc/hosts or nsswitch.conf for that matter.
>> Apache may well go to DNS also, since your local /etc/hosts file is not
>> recognized by any systems outside the localhost, and apache IS a server.
>>
>>
>>
>>
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