[CentOS] fqdn hostname fails after reboot

[Chris]

2012/2/8 Tony Schreiner <anthony.schreiner at bc.edu>:
>
> On Feb 8, 2012, at 4:22 PM, Chris wrote:
>
>> Hi,
>>
>> I have several machines running CentOS 6.2 and a strange problem with
>> the hostname of one machine... After every reboot it loses the fqdn
>> hostname.
>>
>> Here is my confguration:
>>
>> ifconfig | grep "inet addr"
>>          inet addr:10.0.0.12  Bcast:10.0.0.255  Mask:255.255.255.0
>>          inet addr:127.0.0.1  Mask:255.0.0.0
>>
>> /etc/sysconfig/network
>>
>> NETWORKING=yes
>> HOSTNAME=x800.mydomain.local
>> GATEWAY=10.0.0.1
>>
>> 127.0.0.1   localhost localhost.localdomain localhost4 localhost4.localdomain4
>> ::1         localhost localhost.localdomain localhost6 localhost6.localdomain6
>> 10.0.0.12   x800.mydomain.local   x800
>>
>> ... after a reboot:
>>
>> hostname
>> x800.mydomain.local             < OK
>>
>> hostname -f
>> hostname: Unknown host       < NOT OK
>>
>> dnsdomainname
>> dnsdomainname: Unknown host      < NOT OK
>>
>> If I set the hostname manually:
>>
>> hostname x800.mydomain.local
>>
>> hostname -f
>> x800.mydomain.local    < OK
>>
>> dnsdomainname
>> mydomain.local    < OK
>>
>> Everything is okay ...
>>
>> Something I've never experienced before. Does anyone have an idea?
>>
>> thx
>>
>> --
>> Chris
>
> When I strace hostname -f  I see it checking with my name server.
> Are your 2 systems set up differently with respect to name resolution and/or DNS?

I have 5 systems with the same DNS configuration. (name servers in
/etc/resolv.conf)

It seems that /etc/hosts is ignored.. on this system only. But I do
not know why :(

--
Chris