Running the same plugin once vs. multiple times

[Tech Support]

    Thanks for the info. This is good stuff, it really is. Someone else
suggested using check_mk, and I read over all of the documentation on it. It
seems like it was written to solve this very problem, but it seems to be
somewhat involved. What I was originally thinking of was something simpler,
maybe running the plugin out of CRON like you said, and passing all of the
results back to the Nagios machine via send_nsca.  Is it possible to send
all of the data back at once using that method? Otherwise, sending data back
to Nagios 30 times seems somewhat counter-productive to what I want to
accomplish.

Thanks;

John

 

From: Matthew Jurgens [mailto:nagiosusers at edcint.co.nz] 
Sent: Sunday, October 07, 2012 6:21 PM
To: Nagios Users List
Subject: Re: [Nagios-users] Running the same plugin once vs. multiple times

 

 

On 3/10/2012 7:02 AM, Tech Support wrote:

All;

    I wrote a plugin to collect data for a particular service. I invoke the
plugin with whatever parameter I want to return information on.  In fact, it
collects information on about 30 different params at once, then returns the
data that I specified.  For example, ./get_sysinfo -p param1 or
./get_sysinfo -p param2, etc. It seems to me to be a waste of resources to
call the same script 30 times. Is it possible to call the plugin once and
return all the data (including the performance data) at the same time? The
benefit that I have calling the same script 30 different times is that
Nagiosgraph creates a separate graph for each parameter and I don't want to
lose that ability. Any insight at all would be greatly appreciated.    

Thanks;

John V.

 

 

Yes you can pass all data including performance data back in one call.
Here's an example output from check_wmi_plus

Plugin data:
Overall Status - OK (Sample Period 300 sec) - Logical Drive Name="C:" (OK) -
_PercentIdleTime=99%, _PercentBusyTime=1%, _PercentDiskTime=1%,
_PercentDiskReadTime=0%, _PercentDiskWriteTime=1%,
_DiskReadBytesPersec=0B/sec, _DiskReadsPersec=0/sec,
_DiskWriteBytesPersec=51.6KB/sec, _DiskWritesPersec=3/sec,
CurrentDiskQueueLength=0, _AvgDiskQueueLength=0.0,
_AvgDiskReadQueueLength=0.0, _AvgDiskWriteQueueLength=0.0

Performance Data:
'_PercentIdleTimeC:'=99; '_PercentBusyTimeC:'=1; '_PercentDiskTimeC:'=1;
'_PercentDiskReadTimeC:'=0; '_PercentDiskWriteTimeC:'=1;
'_DiskReadBytesPersecC:'=0; '_DiskReadsPersecC:'=0;
'_DiskWriteBytesPersecC:'=52838; '_DiskWritesPersecC:'=3;
'CurrentDiskQueueLengthC:'=0; '_AvgDiskQueueLengthC:'=0.0;
'_AvgDiskReadQueueLengthC:'=0.0; '_AvgDiskWriteQueueLengthC:'=0.0;

You just need to make sure all the field names (for perf data) are
different. Something like PNP4Nagios will draw multiple graphs using output
like that.

If you didn't like returning it all at once you could:
- You could rewrite the plugin to be run on a cron schedule. When it is run,
collect all 30 bits of information and pass the data to Nagios as passive
results to 30 different services.
- You could rewrite the plugin to check multiple parameters at once eg 10
and then pass all 10 back to Nagios as an active plugin. Then just call it 3
times (making it parameter driven to return group1 data, group2 data group3
data etc)




-- 
Smartmon System Monitoring <http://www.smartmon.com.au>  
www.smartmon.com.au 

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