Graph not generate. JMXEval plugin used by nrpe

[edwardzg]

Hello,
I have a problem with jmxeval ver.1.2.6. from https://code.google.com/p/jmxeval/wiki/GettingStarted
I used this extension to checking how much memory actually used java. I get some output from windows host, Nagios server stands on CentOS 6.5. but loose part of data which Nagios need for graphs.
For example when I run “check_jmxeval.bat jmxeval_jb.xml” in windows host I get:
JMXEval MemHeap OK - heapMemoryUsedPercent is 30.5 | heapMemoryUsedPercent=30.5;92;95 time=0.0s

But when I run “check_nrpe -H WinHost -c check_jmxeval” from Nagios serwer by nrpe I get:
JMXEval MemHeap OK - heapMemoryUsedPercent is 30.9

…without this „| heapMemoryUsedPercent=30.5;92;95 time=0.0s”
In file nsclient.log I found something like this:
e:d:\source\nscp\trunk\modules\checkexternalscripts\commands.hpp:91: Failed to parse arguments for command 'check_jmxeval', using old split string method: unknown escape sequence: scripts\check_jmxeval.bat scripts\jmxeval_jb.xml

I found some ideas that adding allow arguments=true in [/settings/external scripts] can help with that but when I add this to nsclient.ini it doesn’t change anything with output. Only new info in .log file: ..\..\..\..\trunk\modules\CheckExternalScripts\CheckExternalScripts.cpp:229: Arguments: scripts\jmxeval_jb.xml

Anybody used this extension and have that kind of problem? Or any idea how to find solution because graphs can be realy useful


Regards,
Jan

[sreinhardt]

Could you post the nsc.ini\nsclient.ini file? Also could you run the command you are attempting to execute via nrpe, directly from a cmd process, and send us the output? (something like ./check_jmxeval.bat ./jmxeval_jb.xml )

[edwardzg]

nsclient.ini:

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[/modules]

; CheckDisk - CheckDisk can check various file and disk related things. The current version has commands to check Size of hard drives and directories.
CheckDisk = 1

; Event log Checker. - Check for errors and warnings in the event log. This is only supported through NRPE so if you plan to use only NSClient this wont help you at all.
CheckEventLog = 1

; Check External Scripts - A simple wrapper to run external scripts and batch files.
CheckExternalScripts = 1

; Helper function - Various helper function to extend other checks. This is also only supported through NRPE.
CheckHelpers = 1

; Check NSCP - Checkes the state of the agent
CheckNSCP = 1

; CheckSystem - Various system related checks, such as CPU load, process state, service state memory usage and PDH counters.
CheckSystem = 1

; CheckWMI - CheckWMI can check various file and disk related things. The current version has commands to check Size of hard drives and directories.
CheckWMI = 1

; NRPE server - A simple server that listens for incoming NRPE connection and handles them. NRPE is preferred over NSClient as it is more flexible. You can of cource use both NSClient and NRPE.
NRPEServer = 1

; NSCAClient - Passive check support (needs NSCA on nagios server). Avalible crypto are: {0=No Encryption (not safe), 1=XOR, 2=DES, 3=DES-EDE3, 4=CAST-128, 6=XTEA, 8=Blowfish, 9=Twofish, 11=RC2, 14=AES, 15=AES, 16=AES, 20=Serpent, 23=GOST}
NSCAClient = 1

; NSClient server - A simple server that listens for incoming NSClient (check_nt) connection and handles them. Although NRPE is the preferred method NSClient is fully supported and can be used for simplicity or for compatibility.
NSClientServer = 1


; Undocumented section
[/settings/default]

; ALLOWED HOSTS - A comaseparated list of allowed hosts. You can use netmasks (/ syntax) or * to create ranges.
allowed hosts = ............


; Section for NRPE (NRPEListener.dll) (check_nrpe) protocol options.
[/settings/NRPE/server]
; COMMAND ARGUMENT PROCESSING - This option determines whether or not the we will allow clients to specify arguments to commands that are executed.
allow arguments = true
; COMMAND ALLOW NASTY META CHARS - This option determines whether or not the we will allow clients to specify nasty (as in |`&><'"\[]{}) characters in arguments.
allow nasty characters = true
; ALLOWED HOSTS - A comaseparated list of allowed hosts. You can use netmasks (/ syntax) or * to create ranges. parent for this key is found under: /settings/default this is marked as advanced in favour of the parent.
#allowed hosts = ..........
; PORT NUMBER - Port to use for NRPE.
port = 5666
.
.
.
[/settings/external scripts]
#allow arguments=true
#allow nasty characters = true

; A list of aliases available. An alias is an internal command that has been "wrapped" (to add arguments). Be careful so you don't create loops (ie check_loop=check_a, check_a=check_loop)
[/settings/external scripts/alias]


; A list of scripts available to run from the CheckExternalScripts module. Syntax is: <command>=<script> <arguments>
[/settings/external scripts/scripts]
check_jmxeval = scripts\check_jmxeval.bat scripts\jmxeval_jb.xml
runcmd = "scripts\runcmd.bat"

; A list of wrappped scripts (ie. using the template mechanism)
[/settings/external scripts/wrapped scripts]


; A list of templates for wrapped scripts
[/settings/external scripts/wrappings]

Also could you run the command you are attempting to execute via nrpe, directly from a cmd process, and send us the output? (something like ./check_jmxeval.bat ./jmxeval_jb.xml )

If I understood you right I wrote about in previous post. When I run “check_jmxeval.bat jmxeval_jb.xml” directly in cmd on windows host I get:
JMXEval MemHeap OK - heapMemoryUsedPercent is 30.5 | heapMemoryUsedPercent=30.5;92;95 time=0.0s


Regards,
Jan

[tmcdonald]

You might need to modify the command in NRPE to evoke cmd with the /c parameter

http://nsclient.org/nscp/wiki/guides/na ... al_scripts

[edwardzg]

Ok, I change external script from

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check_jmxeval = "scripts\\check_jmxeval.bat" "scripts\\jmxeval_jb.xml"

to

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check_jmxeval = cmd /c echo “scripts\\check_jmxeval.bat" "scripts\\jmxeval_jb.xml" ; exit($lastexitcode) | powershell.exe -command –

but I got the same output

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JMXEval MemHeap OK - heapMemoryUsedPercent is 21.24

Info from nsclient.log:

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..\..\..\..\trunk\modules\CheckExternalScripts\CheckExternalScripts.cpp:229: Arguments: /c echo scripts\check_jmxeval.bat scripts\jmxeval_jb.xml ; exit($lastexitcode) | powershell.exe -command –

What is interesting, when I add

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>> C:\log.txt

to external script and run jmxeval by nrpe. In file log.txt I got right output

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JMXEval MemHeap OK - heapMemoryUsedPercent is 18.41 | heapMemoryUsedPercent=18.41;90;95 time=0.0s

The same output I got when I used this with the old version external script (without cmd /c echo)
With info from nsclient.log:

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..\..\..\..\trunk\modules\CheckExternalScripts\CheckExternalScripts.cpp:229: Arguments: scripts\jmxeval_jb.xml

Any idea?


P.S. Change scripts\check_jmxeval.bat to "scripts\\check_jmxeval.bat" is the solution for that: e:d:\source\nscp\trunk\modules\checkexternalscripts\commands.hpp:91: Failed to parse arguments for command 'check_jmxeval', using old split string method: unknown escape sequence: scripts\check_jmxeval.bat scripts\jmxeval_jb.xml

[slansing]

We might actually be going about this the wrong way, you mentioned you changed:

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check_jmxeval = "scripts\\check_jmxeval.bat" "scripts\\jmxeval_jb.xml"

Was that how you originally defined it? the quotes and double slashes may be causing problems try this one:

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check_jmxeval = scripts\check_jmxeval.bat

You may need to explicitly call the .xml file from within the plugin instead of passing it along side, that may be freaking nsclient out a bit. When check_jmxeval is called from the nagios server, what does it output? And what does the NSClient log output? Don't forget to restart nsclient when making these changes. The main problem here is, I think the plugin is working fine with the exception of missing performance data. In your original post, how you had it defined there, should be fine. We might need to target why exactly the perf data is not being wrapped up too... which should not have to do with passing the .xml file.

[edwardzg]

Adding quotes and double slashes removes that kind of info from nsclient.log:

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e:d:\source\nscp\trunk\modules\checkexternalscripts\commands.hpp:91: Failed to parse arguments for command 'check_jmxeval', using old split string method: unknown escape sequence: scripts\check_jmxeval.bat scripts\jmxeval_jb.xml

I don't see any differences about output data when I use

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check_jmxeval = scripts\check_jmxeval.bat scripts\jmxeval_jb.xml

or

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check_jmxeval = "scripts\\check_jmxeval.bat" "scripts\\jmxeval_jb.xml"

. Only that quotes and double slashes removes above info from nsclient.log

You may need to explicitly call the .xml file from within the plugin instead of passing it along side, that may be freaking nsclient out a bit.

Ok, any idea how to do it?

When check_jmxeval is called from the nagios server, what does it output? And what does the NSClient log output?

When I called from nagios server i see

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JMXEval MemHeap OK - heapMemoryUsedPercent is 18.41

NSClient log output

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..\..\..\..\trunk\modules\CheckExternalScripts\CheckExternalScripts.cpp:229: Arguments: scripts\jmxeval_jb.xml

Don't forget to restart nsclient when making these changes.

Yeah, I remember about it


I wrote in earlier post:
What is interesting, when I add

Code: Select all

>> C:\log.txt

to external script like:

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check_jmxeval = scripts\check_jmxeval.bat scripts\jmxeval_jb.xml >> C:\log.txt

and run check_jmxeval by nrpe. In file log.txt I got right output

JMXEval MemHeap OK - heapMemoryUsedPercent is 18.41 | heapMemoryUsedPercent=18.41;90;95 time=0.0s

This is maybe some clue

It's litle complicated

[sreinhardt]

Could you post the check_jmxeval.bat please? I think its easiest to modify that batch file so that it no longer needs the additional xml file as an argument within the nsclient configuration.

[edwardzg]

check_jmxeval.bat:

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@echo off

@if "%OS%" == "Windows_NT" setlocal
@pushd %~dp0
@set BASE_DIR=%cd%
@popd
set BASE_DIR=%BASE_DIR%\lib\jmxeval-1.2.6
set LIB_DIR=%BASE_DIR%\lib
call C:\jboss-as-7.1.1.Final\bin\jmx_setup.bat
set CLASSPATH=%CLASSPATH%;%BASE_DIR%\jmxeval-1.2.6.jar;%LIB_DIR%\args4j-2.0.16.jar
rem echo %CLASSPATH%
%JAVA_HOME%\bin\java -classpath "%CLASSPATH%" com.adahas.tools.jmxeval.App %*

and jmxeval_jb.xml:

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<?xml version="1.0"?>
<jmxeval:jmxeval xmlns:jmxeval="http://www.adahas.com/schema/jmxeval-1.2" 
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">

  <!--
    connect to Java process running on 'localhost' having JMX agent exposed on port '9010'
    using username 'myUser' and password 'myPassword'
   -->
  <connection url="service:jmx:remoting-jmx://localhost:xxxx" 
      username="xxx" password="xxx">
      
      <eval name="MemHeap">
      <query var="heapMemoryUsed" objectName="java.lang:type=Memory" compositeAttribute="HeapMemoryUsage" attribute="used" />
      <query var="heapMemoryMax" objectName="java.lang:type=Memory" compositeAttribute="HeapMemoryUsage" attribute="max" />
      <expr var="heapMemoryUsedPercent" expression="${heapMemoryUsed}/${heapMemoryMax}*100" />
      
      <check useVar="heapMemoryUsedPercent" warning="92" critical="95" message="heapMemoryUsedPercent is ${heapMemoryUsedPercent}">
        <perf />
      </check>
    </eval>
  </connection>
</jmxeval:jmxeval>

[sreinhardt]

Considering the only place the xml file is placed in that script is at the very end, I think its best if we simply hardcode the path to it. So try these:

Without scripts\

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@echo off

@if "%OS%" == "Windows_NT" setlocal
@pushd %~dp0
@set BASE_DIR=%cd%
@popd
set BASE_DIR=%BASE_DIR%\lib\jmxeval-1.2.6
set LIB_DIR=%BASE_DIR%\lib
call C:\jboss-as-7.1.1.Final\bin\jmx_setup.bat
set CLASSPATH=%CLASSPATH%;%BASE_DIR%\jmxeval-1.2.6.jar;%LIB_DIR%\args4j-2.0.16.jar
rem echo %CLASSPATH%
%JAVA_HOME%\bin\java -classpath "%CLASSPATH%" com.adahas.tools.jmxeval.App .\jmxeval_jb.xml

With scripts

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@echo off

@if "%OS%" == "Windows_NT" setlocal
@pushd %~dp0
@set BASE_DIR=%cd%
@popd
set BASE_DIR=%BASE_DIR%\lib\jmxeval-1.2.6
set LIB_DIR=%BASE_DIR%\lib
call C:\jboss-as-7.1.1.Final\bin\jmx_setup.bat
set CLASSPATH=%CLASSPATH%;%BASE_DIR%\jmxeval-1.2.6.jar;%LIB_DIR%\args4j-2.0.16.jar
rem echo %CLASSPATH%
%JAVA_HOME%\bin\java -classpath "%CLASSPATH%" com.adahas.tools.jmxeval.App scripts\jmxeval_jb.xml

Full path - May need to be changed for different OS architecure or nsclient arch

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@echo off

@if "%OS%" == "Windows_NT" setlocal
@pushd %~dp0
@set BASE_DIR=%cd%
@popd
set BASE_DIR=%BASE_DIR%\lib\jmxeval-1.2.6
set LIB_DIR=%BASE_DIR%\lib
call C:\jboss-as-7.1.1.Final\bin\jmx_setup.bat
set CLASSPATH=%CLASSPATH%;%BASE_DIR%\jmxeval-1.2.6.jar;%LIB_DIR%\args4j-2.0.16.jar
rem echo %CLASSPATH%
%JAVA_HOME%\bin\java -classpath "%CLASSPATH%" com.adahas.tools.jmxeval.App "C:\program files\nsclient\scripts\jmxeval_jb.xml"

Try those from the command line, find one that works, then change your nsclient config to have:

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check_jmxeval = scripts\check_jmxeval.bat 
instead of:
check_jmxeval = scripts\check_jmxeval.bat scripts\jmxeval_jb.xml