[hobbit] Re: Custom RRD graphs

[Rich Smrcina]

To expand on this some and provide ultimate flexibility how about an 
optional NCV configuration file?  When used, this file could be ordered 
by TEST, with HOSTs being qualified, and appropriate pattern matching of 
course (sort of the opposite of hobbit-alerts.cfg).  Each entry under 
the test would contain the text to look for (it could be different for a 
  test/host pair) and the graphing parameters for that specific 
combination.  I would envision:

TEST=pg_util
  Page_Utilization,GAUGE,0:100
TEST=sp_util
  Spool_Utilization,GAUGE,0:100 HOST=vm1
  Queue_File,GAUGE,0:100 Data_File,GAUGE,0:100 HOST=^vse.* GRAPH=pqueue

Where the pg_util graph will look for the text 'Page_Utilization' and 
graph the white space delimited value after it (after = or :).  And 
sp_util will look for Spool_Utilization for vm1 and graph that data. 
The graphing parameters will come from hobbitgraph.cfg (as usual), with 
the default being the test name.  For hosts beginning with 'vse' it will 
look for two values, Queue_File and Data_File and use the pqueue 
graphing parameters.  Strange, but true, I have a column that has a 
different number of data points with different names depending upon the 
host (they are both considered spool utilization).

I certainly don't know all of the variations, but this may eliminate the 
need for most extra tests.

Henrik Stoerner wrote:
> On Fri, Nov 11, 2005 at 09:57:31PM -0600, Dan Vande More wrote:
> 
>>Ok, I found the issue.
>>
>>Though I've written dozens of bb clients, I've never come across
>>exactly how BB expects the information. This might be hobbit specific
> 
> 
> It is a result of how the NCV handler in hobbitd_rrd expects data to
> be formatted, so yes - this is hobbit specific.
> 
> 
>>however. In my original email, I stated I was sending the data from my
>>script like:
>>
>>home/monitor/bb/bin/bb 1.2.3.4 "status iron1-mgmt.Memoryutil green
>>Memoryutil : 11"
>>
>>This is not the correct way to do this hobbit-wise. You need to put a
>>\n in between the color status and the data you're pushing via ncv.
> 
> 
> I've updated the hobbitd_rrd man page and added this to the section on
> how to use the NCV data:
> 
>   Note that each "NAME : value" must be on a line by itself. If you have
>   a custom script generating the status- or data-message that is fed
>   into the NCV handler, make sure it inserts a newline before each
>   of the data-items you want to track.
> 
> That should hopefully make it clearer - I'm sorry it bit you.
> 
> 
>>Perhaps it's just my interpretation, but I think we should reword the
>>documentation to explicitly say we do not need to do any
>>--extra-script or --extra-tests if one is using ncv.
> 
> 
> Agreed - did that as well.
> 
> 
>>Finally, I perused a lot of the man pages and code for the past few
>>hours, and only found one error - and that was a spelling error. In
>>~hobbit/server/etc/hobbitgraph.cfg, temperature is misspelled:
>># comment out the [tempeature] section above, and
> 
> 
> Fixed :-)
> 
> 
>>I'm now using ncv for collecting 8 datapoints and it appears to
>>collect and graph data flawlessly. Thanks for the solid implementation
>>Henrik.
> 
> 
> Thank you for reporting what you found - that is the kind of feedback
> I need to make Hobbit better.
> 
> 
> Regards,
> Henrik
> 
> 
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> 
> 
> 

-- 
Rich Smrcina
VM Assist, Inc.
Main: (262)392-2026
Cell: (414)491-6001
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