[Xymon] CLOCK and CPU test

[Novosielski, Ryan]

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On 09/25/2013 04:16 PM, Japheth Cleaver wrote:
> On Wed, September 25, 2013 12:35 pm, Novosielski, Ryan wrote:
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>> Hi all,
>> 
>> I suspect I know the answer to this but want to check:
>> 
>> I'm running Xymon 4.3.12. My manager has recently brought up the 
>> need to have the clock drift monitored (it caused problems with
>> a DB server when there was massive drift once for some reason).
>> I looked into how to do this and it looks like the highest level 
>> that clock drift can cause Xymon to alert at is yellow. This 
>> means that if I wanted to be alerted, I'd have to also get 
>> alerted for yellow CPU on that machine, right? So far my only 
>> idea is to raise the yellow level for CPU. I don't really want
>> to bother with an external test.
>> 
>> Any tips?
>> 
> 
> 
> According to 
> http://www.xymon.com/xymon/help/manpages/man5/analysis.cfg.5.html 
> you should be able to add a line like
> 
> CLOCK 15 red
> 
> ... to an analysis.cfg file (or *.d/ entry) to have it go red if 
> the clock delta exceeds that absolute value. I have to admit not 
> having tested that ever though.
> 
> If that doesn't work, you might be able to simulate it (or assign 
> the color to a different test entirely) with a DS entry; something 
> like:
> 
> DS cpu clock.rrd:la <-15 COLOR=red "TEXT=System clock is &V
> seconds off" DS cpu clock.rrd:la >15 COLOR=red "TEXT=System clock
> is &V seconds off"

Wonderful! I must have been reading an old copy of that documentation
(Google'd for it instead of using what was on the system). Thanks Japheth!

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