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<div class="moz-cite-prefix">Hmm. Does the data after the corrupted
lines appear to match the remaining data for the server in
question? From the sample below it seems not (as I believe this is
reported in alphabetical order), which might indicate indicate a
broader memory corruption issue going on within xymond_client,
where it's somehow losing track of the end or garbling the data in
the buffer being used for holding status output. If it's causing a
false positive, then it's not merely the final output that's the
problem, but something occurring earlier in processing.<br>
<br>
What OS+distro is the server running on?<br>
Any chance you might be able to run xymond_client in debug mode
for a bit while this is occurring?<br>
<br>
-jc<br>
<br>
<br>
On 10/17/2016 7:56 AM, Greg Krpan wrote:<br>
</div>
<blockquote
cite="mid:CAMGrd250jTdo_T=XkB_uWZVLMvacDozJ33qFeD_xe5Sw0VOogg@mail.gmail.com"
type="cite">
<div dir="ltr">Hi JC-
<div><br>
</div>
<div>Thanks for the response.</div>
<div><br>
</div>
<div>I am using Xymon 4.3.27 currently. The raw client data
looks fine- there are no corrupted lines and no added brackets
or special characters that I can see. This only occurs on the
status pages.</div>
<div><br>
</div>
<div>The server has been running since May, and this particular
problem started at the end of Sept., after running Windows
Update on my servers, but as both Windows and Linux clients
are showing the behavior, I have ruled out the updates as the
issue.</div>
<div><br>
</div>
<div>I have tried restarting the service with no effect on
behavior and there is nothing in the log files that show a
problem that I can see. The level of false positives due to
formatting errors has remained relatively consistent, and
tends to be limited to the PROCS (Win, Linux) and SVCS (Win
only) tests, but occasionally will see the same error
occurring on the DISK and CPU tests, although that is
significantly less frequent, and is not across all configured
machines. The PROCS/SVCS tests are showing random errors on
one machine or another approximately every 5 minutes.</div>
<div><br>
</div>
<div>Thanks<br>
Greg.</div>
<div class="gmail_extra"><br>
<div class="gmail_quote">On Fri, Oct 14, 2016 at 6:52 PM, J.C.
Cleaver <span dir="ltr"><<a moz-do-not-send="true"
href="mailto:cleaver@terabithia.org" target="_blank">cleaver@terabithia.org</a>></span>
wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0
.8ex;border-left:1px #ccc solid;padding-left:1ex">
<div class="HOEnZb">
<div class="h5"><br>
<br>
On Fri, October 14, 2016 3:52 pm, Greg Krpan wrote:<br>
> Recently, my monitoring has been generating
frequent errors that are<br>
> false,<br>
> due to improper formatting, It is happening on
both Windows and Linux<br>
> clients. I've included an example of how the
tests are sending data back<br>
> to the xymon server. I have not made any changes
to my client or server<br>
> configurations. Has anyone else been
experiencing this behavior, or know<br>
> of a fix?<br>
><br>
> Greg.<br>
><br>
> Name StartupType
Status<br>
> DisplayName<br>
> AeLookupSvc manual
stopped<br>
> Application Experience<br>
> ALG manual
stopped<br>
> Application Layer Gateway Service<br>
> AppIDSvc manual
stopped<br>
> Application Identity<br>
> Appinfo manual
stopped<br>
> Application Information<br>
> AppMgmt manual
stopped<br>
> Application Management<br>
> AppReadiness manual
stopped App<br>
> Readiness<br>
> AppXSvc manual
stopped AppX<br>
> Deployment Service (AppXSVC)<br>
> AudioEndpointBuilder manual<br>
> toppe] Windows Audio Endpoint Builder<br>
> Audiosrv manual
stopped Windows<br>
> Audio<br>
> BBWin automatic
started Big<br>
> Brother Xymon Client<br>
> BFE automatic
started Base<br>
> Filtering Engine<br>
> BITS automatic
started<br>
> Background Intelligent Transfer Serv<br>
> ce<br>
> BrokerInfrastructure ] automatic
started<br>
> Background Tasks Infrastructure Service<br>
> Browser disabled
stopped Computer<br>
> Browser<br>
> CcmExec automatic
started SMS Agent<br>
> Host<br>
> CertPropSvc manual
started<br>
> Certificate Propagation<br>
> CmRcService disabled
stopped<br>
> Configuration Manager Remote Control<br>
> COMSysApp manual<br>
> started COM+ Sys]<br>
> m Application<br>
> CryptSvc]<br>
> ]<br>
> utomatic started Cr]<br>
> tographic Services<br>
> DcomLaunch ]<br>
> automatic sta]<br>
> ed DCOM Serv]<br>
> Process Launcher<br>
> defra]svc manual
stopped Optimize<br>
> drives<br>
> DeviceAssociationService manual
stopped Device<br>
> Association Service<br>
<br>
<br>
</div>
</div>
Hi Greg,<br>
<br>
Is there anything unusual about the process names on the
lines immediately<br>
before the corruption? There's a known issue in that lines
starting with a<br>
bracket will cause missing data, and this can happen more
frequently on<br>
Windows servers just by virtue of some of the data that's
coming across,<br>
but that doesn't appear to be causing this specific issue.<br>
<br>
<br>
Can you confirm which version of Xymon server you're
using? Do you see the<br>
same corruption in the "raw" Client Data for the affected
servers, or is<br>
it only occurring on the status pages?<br>
<br>
Also -- anything unusual in the log files? Has this
problem been constant<br>
since it started, or is it getting worse? Does restarting
the xymon<br>
service fix it (temporarily)?<br>
<br>
<br>
Regards,<br>
-jc<br>
<br>
</blockquote>
</div>
<br>
<br clear="all">
<div><br>
</div>
-- <br>
<div class="gmail_signature" data-smartmail="gmail_signature">
<div dir="ltr">
<div>---------------------------------------------------------------------------
<br>
In honor of those who lost their lives exploring the
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Apollo 1; January 27, 1967 Virgil "Gus" Ivan Grissom,
Edward Higgins White II, Roger Bruce Chaffee <br>
</div>
<div style="text-align:left">Space Shuttle Challenger,
Mission STS-51-L; January 28, 1986 Francis R. Scobee,
Michael J. Smith, Judith A. Resnik, Ellison S. Onizuka,
Ronald E. McNair, Gregory B. Jarvis, Sharon Christa
McAuliffe <br>
</div>
<div>Space Shuttle Columbia, Mission STS-107; February 1,
2003 Rick D. Husband, William C. McCool, Michael P.
Anderson, Kalpana Chawla, David M. Brown, Laurel Blair
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</div>
</blockquote>
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