Nagios Support Forum

Hi,
I have the below service defined and you can see that running the check as nagios in the shell, it returns data. When the service runs, it barfs up the following. Any hints on getting the syntax right? I've tried many different combinations of escape for the $ and \ chars and quoting to no avail. Waa!

NSClient - ERROR: Invalid return from command: check_pdh
An example of a working counter service:
On the one that works, I've used both \ and \\ in front of the counter and it doesn't seem to mind either one.

Try with single quotes and \$$ :

-l '\\MSSQL\$$QA4:Catalog Metadata(NP_RADIUS)\Cache Hit Ratio'

This article talks about services but is about the $ sign.
https://support.nagios.com/kb/article.php?id=168

I need to start w/ those KB pages rather than posing here... Thanks!

Single quotes fail from the shell and Nagios. All of the below fail.

-l '\\MSSQL\$$QA4:Catalog Metadata(NP_RADIUS)\Cache Hit Ratio'
-l '\\MSSQL$$QA4:Catalog Metadata(NP_RADIUS)\Cache Hit Ratio'
-l "\\MSSQL$$QA4:Catalog Metadata(NP_RADIUS)\Cache Hit Ratio"

But the following works, yay!

-l "\\MSSQL\$$QA4:Catalog Metadata(NP_RADIUS)\Cache Hit Ratio"

Now I just need for it to save some perfdata...

I added the description bit and get perfdata, but the value is no longer in the text returned before the pipe character |... Careful what you wish for.

check_nt -H wsql002 -s "passwd" -p 12489 -v COUNTER -l "\\MSSQL\$QA4:Catalog Metadata(NP_RADIUS)\Cache Hit Ratio","NP_RADIUS log cache hit ratio %%"

NP_RADIUS log cache hit ratio % | 'NP_RADIUS log cache hit ratio %%'=59.000000%;0.000000;0.000000;

gormank wrote:check_nt -H wsql002 -s "passwd" -p 12489 -v COUNTER -l "\\MSSQL\$QA4:Catalog Metadata(NP_RADIUS)\Cache Hit Ratio","NP_RADIUS log cache hit ratio %%"

Try %.f:
check_nt --help has this information:

COUNTER =
Check any performance counter of Windows NT/2000.
Request a -l parameters with the following syntax:
-l "\\<performance object>\\counter","<description>
The <description> parameter is optional and is given to a printf
output command which requires a float parameter.
If <description> does not include "%%", it is used as a label.
Some examples:
"Paging file usage is %%.2f %%%%"
"%%.f %%%% paging file used."

What version of NSClient are you using?

I would try check_nrpe instead of check_nt

It should look something like this

Heh, I actually set up to use check_nrpe yesterday and while it now returns the value as part of the status, it appends the word none to the end of the output.

# /usr/local/nagios/libexec/check_nrpe -H host-c CheckCounter -a "Counter=\MSSQL\$QA4:Catalog Metadata(NP_RADIUS)\Cache Hit Ratio"
OK: \MSSQL$QA4:Catalog Metadata(NP_RADIUS)\Cache Hit Ratio = 60|'\MSSQL$QA4:Catalog Metadata(NP_RADIUS)\Cache Hit Rationone'=60;0;0

I can add a custom label w/ ...Counter:Custom label=... amd the none is still there.

Very strange. This might be a bug with NSClient++. Looking at the CheckSystem::checkCounter function:
This is the only place I can imagine the 'none' being appended to the perfdata output. No idea what purpose it serves though :p

You can make a career out of trying to get the check_nt check_nrpe syntax right...

# /usr/local/nagios/libexec/check_nrpe -H qa4am2mwsql001 -c CheckCounter -a "Counter=\MSSQL\$QA4:Catalog Metadata(NP_RADIUS)\Cache Hit Ratio" 'perf-config=*(suffix:none)'
OK: \MSSQL$QA4:Catalog Metadata(NP_RADIUS)\Cache Hit Ratio = 64|'\MSSQL$QA4:Catalog Metadata(NP_RADIUS)\Cache Hit Rationone'=64;0;0

# /usr/local/nagios/libexec/check_nrpe -H host -c CheckCounter -a "Counter=\MSSQL\$QA4:Catalog Metadata(NP_RADIUS)\Cache Hit Ratio" 'perf-config=*(suffix:)'
OK: \MSSQL$QA4:Catalog Metadata(NP_RADIUS)\Cache Hit Ratio = 64|'\MSSQL$QA4:Catalog Metadata(NP_RADIUS)\Cache Hit Rationone'=64;0;0

# /usr/local/nagios/libexec/check_nrpe -H host -c CheckCounter -a "Counter=\MSSQL\$QA4:Catalog Metadata(NP_RADIUS)\Cache Hit Ratio" "perf-config=*(suffix:)"

OK: \MSSQL$QA4:Catalog Metadata(NP_RADIUS)\Cache Hit Ratio = 64|'\MSSQL$QA4:Catalog Metadata(NP_RADIUS)\Cache Hit Rationone'=64;0;0

# /usr/local/nagios/libexec/check_nrpe -H host -c CheckCounter -a "Counter=\MSSQL\$QA4:Catalog Metadata(NP_RADIUS)\Cache Hit Ratio","perf-config=*(suffix:)"
Failed to poll counter: \MSSQL$QA4:Catalog Metadata(NP_RADIUS)\Cache Hit Ratio,perf-config=*(suffix:) PdhAddCounter failed: c0000bb9: The specified counter could not be found.

# /usr/local/nagios/libexec/check_nrpe -H host -c CheckCounter -a "Counter=\MSSQL\$QA4:Catalog Metadata(NP_RADIUS)\Cache Hit Ratio" "perf-config=*(suffix:Test)"
OK: \MSSQL$QA4:Catalog Metadata(NP_RADIUS)\Cache Hit Ratio = 64|'\MSSQL$QA4:Catalog Metadata(NP_RADIUS)\Cache Hit Rationone'=64;0;0

# /usr/local/nagios/libexec/check_nrpe -H host -c CheckCounter -a "Counter=\MSSQL\$QA4:Catalog Metadata(NP_RADIUS)\Cache Hit Ratio" 'perf-config=*(suffix:Test)'
OK: \MSSQL$QA4:Catalog Metadata(NP_RADIUS)\Cache Hit Ratio = 64|'\MSSQL$QA4:Catalog Metadata(NP_RADIUS)\Cache Hit Rationone'=64;0;0

# /usr/local/nagios/libexec/check_nrpe -H host -c CheckCounter -a "Counter=\MSSQL\$QA4:Catalog Metadata(NP_RADIUS)\Cache Hit Ratio" 'perf-config=(suffix:Test)'
OK: \MSSQL$QA4:Catalog Metadata(NP_RADIUS)\Cache Hit Ratio = 64|'\MSSQL$QA4:Catalog Metadata(NP_RADIUS)\Cache Hit Rationone'=64;0;0

It's entirely possible, for the CheckCounter command, that the underlying C is overwriting the perf-config argument.