Plugin for Copy Read Hits ( Windows ) - NT_CACHE

[ranjitw]

Hi,

Can you please suggest what would be the plugin for monitoring this:

Copy Read Hits :
Displays the percentage of cache copy read requests. A copy read is a file read operation that is satisfied by a memory copy from a cache page to the application's buffer. If the value is greater than a percent is excellent.

If the Copy Read Hits decreases in value by about 10 percent while Copy Reads there is an overall memory shortage.

Thresholds for alarms and warnings

Alarm 1 0-19 percent Alarm
Alarm 2 19-30 percent Warn

[lmiltchev]

Is your goal to monitor the "Copy Read Hits %" Windows performance counter? Can you elaborate?

example01.PNG

If this is the case, you can use NSClient++.

[Box293]

To expand on what @lmiltchev said, this here might explain in more detail how to monitor a performance counter in NSClient++:
http://sites.box293.com/nagios/guides/c ... erformance
(yes I know it's about disk performance but the steps invovled are the same)

[ranjitw]

Hi lumiltchev,

Yes, I want to monitor Copy Read Hits in windows performance counter.

I tried below command but its failing with error.

./check_nrpe -H xxx.xxx.xx.xxx -c CheckCounter -a 'Counter:C: % Read Time=\LogicalDisk(C:)\% Disk Read Time' ShowAll MaxWarn=50 MaxCrit=75

Could not construct return packet in NRPE handler check client side (nsclient.log) logs...

IN nsclinet.log I see below error :

2015-10-27 06:31:49: error:modules\NRPEListener\NRPEListener.cpp:432: Request arguments contained illegal metachars!
2015-10-27 06:31:49: error:modules\NRPEListener\NRPEListener.cpp:320: Exception handling NRPE packet

[Box293]

Open a command prompt on your windows server and execute these commands:

Code: Select all

cd "\Program Files\NSClient++\"
nscp settings --activate-module NRPEServer --add-defaults
nscp settings --path /settings/NRPE/server --key "allow arguments" --set true
nscp settings --path /settings/NRPE/server --key "allow nasty characters" --set true

IF this is NSClient++ 0.4.3 onwards

nscp settings --path /settings/NRPE/server --key insecure --set true

Then restart the NSClient++ service.

[ranjitw]

Hi Box293,

We are currently using below version . Is this not supported for 0.3.9.328 ?

C:\Program Files\NSClient++>"nsclient++.exe" -version
l NSClient++.cpp(369) NSClient++ Version: 0.3.9.328 2011-08-16, Plattform: x64

Can you please attached NSClient++ 0.4.3 to this case please in zip format it would be of great help.

[ranjitw]

Hi ,

I have upgraded the NSclient++ can you please share me the command for copy read hits.

[jdalrymple]

The commands provided by Box293 were intended to resolve the error you encountered:

Code: Select all

2015-10-27 06:31:49: error:modules\NRPEListener\NRPEListener.cpp:432: Request arguments contained illegal metachars!
2015-10-27 06:31:49: error:modules\NRPEListener\NRPEListener.cpp:320: Exception handling NRPE packet

If you are still seeing the same issue you can use the command Box293 provided earlier:

Code: Select all

cd "\Program Files\NSClient++\"
nscp settings --activate-module NRPEServer --add-defaults
nscp settings --path /settings/NRPE/server --key "allow arguments" --set true
nscp settings --path /settings/NRPE/server --key "allow nasty characters" --set true
nscp settings --path /settings/NRPE/server --key insecure --set true

If you have a new issue please elaborate.

[tgriep]

Try running this to see if you get the data for the read hits.

Code: Select all

/usr/local/nagios/libexec/check_nrpe -H xxx.xxx.xxx.xxx -c CheckCounter -a 'Counter=\Cache\Copy Read Hits %' ShowAll MaxWarn=50 MaxCrit=75

[ranjitw]

Hi ,

I have got the ouptut using the below command :

./check_nrpe -H xxx.xxx.xx.xxx -c CheckCounter -a ShowAll "Counter=\\Cache\\Copy Read Hits %" MinWarn=20 MinCrit=10
OK: \Cache\Copy Read Hits % = 100|'\Cache\Copy Read Hits %none'=100;20;10

Is there an option in command where we specify to generate an alarm only after getting an average of 45 mins ?