[Xymon] SSH test checks too often for a device

[Neil Simmonds]

I should have mentioned on the below description that I am still running
this at 5 minute intervals but just using it for a bigger timeout as I
have one test that can be a bit slow. It's actually an http test that
can take more than the standard timeout. 

 

I'm sure this should be adaptable to SSH tests.

 

________________________________

From: xymon-bounces at xymon.com [mailto:xymon-bounces at xymon.com] On Behalf
Of Neil Simmonds
Sent: 28 June 2012 10:40
To: xymon at xymon.com
Subject: Re: [Xymon] SSH test checks too often for a device

 

I do this for certain ping tests.

 

I have a slowtests.sh script in my ext directory like this,

 

#!/bin/sh

 

XYMONNETWORK="slowtests"

export XYMONNETWORK

 

$XYMONHOME/bin/xymonnet --report --ping --checkresponse --timeout=20

 

 

Then my tasks.cfg has been changed so that xymonnet has the
-test-untagged option,

 

[xymonnet]

        ENVFILE /xymon/server/etc/xymonserver.cfg

        NEEDS xymond

        CMD xymonnet --report --ping --checkresponse --test-untagged

        LOGFILE $XYMONSERVERLOGS/xymonnet.log

        INTERVAL 5m

 

And I have a new entry at the bottom like this,

 

 

[slowtests]

        ENVFILE /xymon/server/etc/xymonserver.cfg

        NEEDS xymond

        CMD $XYMONHOME/ext/slowtests.sh                          

        LOGFILE $XYMONSERVERLOGS/slowtests.log

        INTERVAL 5m

 

 

Then all I do is add the tag "NET:slowtests" to the tests that I only
want to run every 20 minutes.

 

I must admit though, that I'm not sure if xymonnetagain would still pick
up a failure from slowtests and start the 1m retries. 

 

Perhaps someone else can help on that. 

 

________________________________

From: xymon-bounces at xymon.com [mailto:xymon-bounces at xymon.com] On Behalf
Of Jeremy Laidman
Sent: 28 June 2012 10:29
To: xymon at xymon.com
Subject: [Xymon] SSH test checks too often for a device

 

Hiya

 

I have a few devices on which I do an ssh check.  These devices have
some sort of self-defence mechanism and they throttle connecting to the
sshd process if they get failed connections (with no login) at too high
a rate.  Unfortunately, twice every 5 minutes (I have two Xymon servers)
is sometimes a bit too often, and once they start to fail, I'm guessing
that xymonnet-again.sh starts to hammer them every minute.  The devices
are appliances such that I cannot configure this behaviour.

 

I know there's a funky NET:location hack that can be used to adjust the
frequency of the net tests for nominated hosts, but I see no way to
limit the effect to only the ssh test, and so all tests will be slowed
down.

 

Can anyone think of a better way to do this than the NET:location hack?
I only want to slow down the ssh tests.

 

Cheers

Jeremy

 

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Name & Registered Office: EXPRESS GIFTS LIMITED, 2 GREGORY ST, HYDE, CHESHIRE, ENGLAND, SK14 4TH, Company No. 00718151.
Express Gifts Limited is authorised and regulated by the Financial Services Authority
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information for any purpose other than that indicated and upon request will destroy the information and remove it from their records.  
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