Memory Usage

[hillhealthcenter]

How can I have MEM USE check physical memory only? Currently, it appears to be combining physical and paged memory.

I'm using NSClient++ 0.4.0.172 64-bit.

System:
Nagios XI Version : 2014R1.3
nagiosxi.hhc.com 2.6.32-220.23.1.el6.i686 i686
CentOS release 6.2 (Final)
Gnome is not installed

Here the contents of my nsclient.ini file:

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; Undocumented section


[/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

; 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 = 192.168.100.230


; Section for NSClient (NSClientServer.dll) (check_nt) protocol options.
[/settings/NSClient/server]


; Section for system checks and system settings
[/settings/check/system/windows]


; Confiure which services has to be in which state
[/settings/check/system/windows/service mapping]


; Configure crash handling properties.
[/settings/crash]


; Section for the EventLog Checker (CheckEventLog.dll).
[/settings/eventlog]


; A set of options to configure the real time checks
[/settings/eventlog/real-time]


; A set of filters to use in real-time mode
[/settings/eventlog/real-time/filters]


; Section for external scripts configuration options (CheckExternalScripts).
[/settings/external scripts]


; 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_updates=cmd /c echo scripts\Check-Updates.ps1; exit $LastExitCode | powershell.exe -command -


; 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]


; Section for configuring the log handling.
[/settings/log]


; Configure log file properties.
[/settings/log/file]


; Section for configuring the shared session.
[/settings/shared session]


; A list of avalible remote target systems
[/settings/targets]


; Section for NRPE (NRPEListener.dll) (check_nrpe) protocol options.
[/settings/NRPE/server]

[sreinhardt]

Try adding the following line to arg4 in your nagios service config there. check_nt and nrpe both from nsclient should work with that setting for memory checks.

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type=physical

[hillhealthcenter]

Spenser,

I added the argument type=physical to arg4. However, there is no change.

[sreinhardt]

OK let's run both of those manually once and see what we get:

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cd /usr/local/nagios/libexec
./check_nt -H centcshdb -s -p 12489 -v MEMUSE -w 80 -c 90
./check_nt -H centcshdb -s -p 12489 -v MEMUSE -w 80 -c 90 type=physical

Note that you may need to change the hostname and add a password after -s if you cleared that out on your screenshots.

[hillhealthcenter]

Here's what I got after several attempts:

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[root@nagiosxi libexec]# ./check_nt -H centcshdb -s -p 12489 -v MEMUSE -w 80 -c 90
check_nt: Could not parse arguments
Usage:
check_nt -H host -v variable [-p port] [-w warning] [-c critical]
[-l params] [-d SHOWALL] [-u] [-t timeout]
[root@nagiosxi libexec]# ./check_nt -H centcshdb -s -p 12489 -v MEMUSE -w 80 -c 90 type=physical
check_nt: Could not parse arguments
Usage:
check_nt -H host -v variable [-p port] [-w warning] [-c critical]
[-l params] [-d SHOWALL] [-u] [-t timeout]
[root@nagiosxi libexec]# ./check_nt -H centcshdb -v MEMUSE -p 12489 -w 80 -c 90
Memory usage: total:73725.88 MB - used: 32539.44 MB (44%) - free: 41186.44 MB (56%) | 'Memory usage'=32539.44MB;58980.70;66353.29;0.00;73725.88
[root@nagiosxi libexec]# ./check_nt -H centcshdb -v MEMUSE -p 12489 -w 80 -c 90 type=physical
Memory usage: total:73725.88 MB - used: 32538.01 MB (44%) - free: 41187.87 MB (56%) | 'Memory usage'=32538.01MB;58980.70;66353.29;0.00;73725.88
You have new mail in /var/spool/mail/root
[root@nagiosxi libexec]#

[Box293]

Using check-nrpe you will be able to check physcial memory.

This post has a good write up:
http://support.nagios.com/forum/viewtop ... 8619#p8619

But in short try:

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./check_nrpe -H 10.25.14.2 -p 5666 -c CheckMEM -a MaxWarn=80% MaxCrit=90% ShowAll=long type=physical

Which should output something like:

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OK: physical memory: Total: 4G - Used: 442M (10%) - Free: 3.57G (90%)|'physical memory %'=10%;80;90 'physical memory'=441.543M;3276.444;3685.999;0;4095.555

[hillhealthcenter]

Box293,

I'm using NSClient++ 0.4.0.172 64-bit. It doesn't have a nsc.ini file. It has a nsclient.ini file. Should I be using a different version of NSClient++?

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[root@nagiosxi libexec]# ./check_nrpe -H 192.168.103.21 -p 5666 -c CheckMEM -a MaxWarn=80% MaxCrit=90% ShowAll=long type=physical
Request contained arguments (not currently allowed, check the allow arguments option).
[root@nagiosxi libexec]#

[hillhealthcenter]

Box293,

I had to add these nsclient.ini section for NRPE:
allow arguments = 1

[hillhealthcenter]

BTW, are we calling this issue a bug?

[lmiltchev]

It's a known issue. I am not sure if you would consider it a bug. Anyway, here's some input from the developer:

http://www.nsclient.org/forums/topic/old-1410/