[xymon] Data flooding from x.x.x.x

David Baldwin david.baldwin at ausport.gov.au
Mon Oct 25 04:52:02 CEST 2010


Henrik Størner wrote:
> In <4CC17F18.7040309 at shihad.org> Iain M Conochie <iain at shihad.org> writes:
>   
>> Good afternoon xymoners.
>> Is there a large risk in increasing the MAX_HOBBIT_INBUFSZ to above 
>> 10MB to try to avoid these error messages?
>> Latest errormessages:
>>
>> Data flooding from X.X.X.X, closing connection
>>
>> These are windows boxes and most likely there is something wrong with 
>> the client but we are seeing this very consistently.
>>     
>
> I've seen this lately, triggered by huge Windows event-logs.
> On Windows-systems, that's probably the only piece of data
> that can get so huge.
>
> If you know which hosts are causing this - look at the IP's - 
> then I would recommend that the first action should be to look
> at why there are so many log-entries in the eventlog. And
> since eventlog-scanning can load a system rather heavily, you
> may want to consider turning off eventlog monitoring completely.
> Or at least for the particular log that generates so much data.
>   
In my experience, this is caused by the BBWin client and as Henrik
suspects from event logs. If you have Success Auditing turned on it is
almost a certainty that the messages will be too big on a busy server.

My workaround for these is to disable the eventlog reporting in
BBWin.cfg by commenting out the following line:

    <!-- load name="msgs" value="msgs.dll"/ -->

This probably breaks reporting on other (filesystem-based) log files.

I was unable to work out how to set up filtering or disabling of
eventlogs any other way in BBWin centralised mode.

David.

-- 
David Baldwin - IT Unit
Australian Sports Commission          www.ausport.gov.au
Tel 02 62147830 Fax 02 62141830       PO Box 176 Belconnen ACT 2616
david.baldwin at ausport.gov.au          Leverrier Street Bruce ACT 2617


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