[Xymon] DNS lookup occurs even with noconn

FORD Alan Alan.FORD at stanwell.com
Thu May 17 03:16:56 CEST 2012


Ok I finally got round to testing it.

To stop DNS lookup on a made up client name you need...

0.0.0.0    soapro  #   testip noconn

Sweet!!

Thanks all!!

From: xymon-bounces at xymon.com [mailto:xymon-bounces at xymon.com] On Behalf Of FORD Alan
Sent: Friday, 11 May 2012 3:58 PM
To: 'Jeremy Laidman'
Cc: xymon at xymon.com
Subject: Re: [Xymon] DNS lookup occurs even with noconn

Hmm... Maybe. Will have to try it :)

It would have to be something like this then

0.0.0.0    soapro  #   testip noconn

Seems a bit counter intuitive... lol


From: Jeremy Laidman [mailto:jlaidman at rebel-it.com.au]
Sent: Friday, 11 May 2012 3:49 PM
To: FORD Alan
Cc: xymon at xymon.com<mailto:xymon at xymon.com>
Subject: Re: [Xymon] DNS lookup occurs even with noconn

What if you add "testip"?
On Fri, May 11, 2012 at 10:21 AM, FORD Alan <Alan.FORD at stanwell.com<mailto:Alan.FORD at stanwell.com>> wrote:
Hi all,

I have databases and webpages in my hosts.cfg like this..


0.0.0.0        Oracle_Enterprise_Manager # prefer noping noconn https://ictoem01.stanwell.com:7801/em/console  # Obviously a web page

0.0.0.0           soapro # prefer noconn  #  This is an oracle database which I have tests sent to.





What I find is that even with noconn, it still attempts to resolve the server name ie Oracle_Enterprise_Manager



I have managed to fix this by modifying xymonnet.c on line 839

>From this...



if (!h->testip && (dnsmethod != IP_ONLY)) add_host_to_dns_queue(h->hostname);



to this



if (!h->testip && !h->noconn && (dnsmethod != IP_ONLY)) add_host_to_dns_queue(h->hostname);

Any comments or possible breaking of Xymon??

If my interpretaion is what is expected for the noconn test maybe Henrik could put this in as a bug fix  :)

Thanks

Alan Ford
Senior Database Administrator
Com Serv - Information Communications and Technology
Stanwell Corporation Limited

www.stanwell.com<http://www.stanwell.com>


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