[leafnode-list] Re: No address associated with hostname

Matthias Andree matthias.andree at gmx.de
Wed May 24 00:14:11 CEST 2017


Am 24.05.2017 um 00:01 schrieb Cecil Westerhof:
> 2017-05-23 23:20 GMT+02:00 Matthias Andree <matthias.andree at gmx.de>:
>
>> Am 23.05.2017 um 21:20 schrieb Cecil Westerhof:
>>> 2017-05-22 20:47 GMT+02:00 Cecil Westerhof <cldwesterhof at gmail.com>:
>>>
>>>> I migrated to another machine and now leafnode does not work anymore.
>>>>
>>>> With ‘fetchnews -vvvv’ I get (I renamed my fqdn):
>>>> leafnode 1.11.10: verbosity level is 4, debugmode is 0
>>>> try_lock(timeout=5), fqdn="demo.example.com"
>>>> news: connecting to port nntp...
>>>> warning: news: cannot resolve host name: No address associated with
>>>> hostname
>>>> news: connection failed.
>>>> WARNING: some servers have not been queried!
>>>> wrote active file with 29971 lines
>>>> Started process to update overview data in the background.
>>>> Network activity has finished.
>>>>
>>>>
>>>> What is happening here and how do I solve that?
>>>>
>>> ​Also is there a way to display the value of hostname?
>>>
>> I appears in verbose logging (syslog, through DEBUG severity) if you run
>> one of the nontrivial leafnode programs with the environment variable
>> LN_DEBUG_QUALIFICATION set and not empty. texpire or fetchnews should
>> work for that.
>>
>> Be sure to set up your syslog to capture debug logging, most default
>> syslog configurations discard debug severity.
>>
> ​When I try that I get to see:
>     May 23 23:51:14 munus.decebal.nl fetchnews[25709]: canonical hostname:
> munus.decebal.nl

That's your own, and could be resolved at least locally. I'm not
authoritative for decebal.nl, but it looks plausible.

>     May 23 23:51:14 munus.decebal.nl fetchnews[25709]: warning: news:
> cannot resolve host name: No address associated with hostname
That is for an upstream server. There seems to be a "server = news" line
in your leafnode configuration, and that name "news" cannot be resolved
given your current resolver configuration (predominantly
/etc/resolv.conf, but also /etc/host.conf and /etc/nsswitch.conf and
possibly unbound/bind/dnsmasq DNS configuration).  This is where you put
the name of your upstream news server that you intend to download news
from. Easiest to put a FQDN on the "server = ..." line.


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