[no subject]

/Johan


-----Original Message-----
From: Johan Sj=F6berg [mailto:johan.sjoberg (at) deltamanagement.se]=20
Sent: den 7 januari 2009 17:01
To: hobbit (at) hswn.dk
Subject: RE: [hobbit] Two DNS lookups for a server but one fails

Hi.

We have been experiencing another DNS check problem since the upgrade to =
Xymon 4.2.2. Since I upgraded, I sometimes get "Timeout (channel =
destroyed) Seconds: 4.999" on two DNS servers that are on an offsite =
location (connected over VPN). The problem started immediately after the =
update, so I think it is related. This never happened with 4.2.0. Has =
the timeout been changed in the new version?
Anyhow, I compiled and installed the new dns.c and have not experienced =
any "purple" issues. Now I will just wait and see if the DNS check =
alerts will continue to appear.

/Johan

-----Original Message-----
From: Ward, Martin [mailto:Martin.Ward (at) colt.net]=20
Sent: den 7 januari 2009 16:52
To: hobbit (at) hswn.dk
Subject: RE: [hobbit] Two DNS lookups for a server but one fails

Hi Henrik,

I compiled that in and installed it but it seems to have messed up all =
the remote port checks. All my ssh port tests, which are initiated from =
the server, are now purple, as well as the DNS checks, syslog port =
checks and others besides.

Rebuilding with the previous version has restored the remote port checks =
as well as the dual-DNS-check errors.

|\/|artin

> -----Original Message-----
> From: Henrik St=C3=B8rner [mailto:henrik (at) hswn.dk]=20
> Sent: 07 January 2009 13:30
> To: hobbit (at) hswn.dk
> Subject: Re: [hobbit] Two DNS lookups for a server but one fails
>=20
>=20
> Hi Martin,
>=20
> On Mon, Jan 05, 2009 at 01:58:56PM -0000, Ward, Martin wrote:
> > *** DNS lookup of 'a:smtp.server.com' ***
> > Timeout (channel destroyed)
> >=20
> > In this instance it was the A record that failed but in=20
> others it is=20
> > the NS record. I always get one of the queries back=20
> successfully, but=20
> > not both.
> >=20
> > These were working fine until I upgraded to Xymon 4.2.2 so=20
> this looks=20
> > like the culprit. Any ideas or suggestions?
>=20
> there was a change done in 4.2.2 - backported from the 4.3.x=20
> code - to fix a bug that could cause the network tests to=20
> lockup while doing the DNS lookups. It is probably that "fix"=20
> that causes the problem.
>=20
> Going over the DNS code again, I think there's some flawed=20
> logic in how it handles the lookups. Could you try the=20
> attached version of=20
> xymon-4.2.2/bbnet/dns.c ? Just copy it on top of the existing=20
> one, then run "make" and copy the resulting=20
> xymon-4.2.2/bbnet/bbtest-net=20
> binary to your ~xymon/server/bin/ directory (save the=20
> existing one just in case this completely breaks stuff).
>=20
>=20
> Let me know if that is better.
>=20
>=20
> Regards,
> Henrik
>=20
>=20


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No virus found in this incoming message.
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Version: 8.0.176 / Virus Database: 270.10.5/1881 - Release Date: =
2009-01-07 17:59