[Rpm-maint] Build Host: localhost.localdomain

Panu Matilainen pmatilai at laiskiainen.org
Wed Aug 26 05:40:21 UTC 2009

On Mon, 24 Aug 2009, Giles Anderson wrote:

> On Monday 24 August 2009 15:49:39 Mark Hatle wrote:
>> RPM queries the name of the local machine from the DNS.
>> So if you have the IP set to, and the DNS entry of
>> locahost.localdomain, then that is what you will get.
>> Fix the host's IP address and DNS entry to get a reasonable value.

To be exact, rpm queries the system hostname, and then performs a DNS 
lookup of that hostname. If the DNS query fails you get a warning but rpm 
uses whatever the hostname happens to be, otherwise it uses the name 
gotten from DNS.

> Thats what I have done, but its the last item in the list.
> Presumably it has to be first?

Yes, the rest are considered aliases. For example on my F11 laptop:
[pmatilai at localhost ~]$ hostname
[pmatilai at localhost ~]$ python -c "import socket; print socket.gethostbyname_ex(socket.gethostname())"
('localhost', ['localhost.localdomain', 'localhost4', 
'localhost4.localdomain4', 'localhost.localdomain', 'localhost6', 
'localhost6.localdomain6'], ['', ''])

The hostname is "localhost.localdomain" but the first entry in /etc/hosts 
is "localhost" so that is what gethostbyname() returns, and gets used by 
rpm as the build host.

 	- Panu -

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