Hi all,

check_nt -v MEMUSE shows me the complete memory (physical memory +
page.sys) from the 64bit Windows Clients, which are using NSClient++
0.3.7.493 2009-10-12.

# /usr/local/libexec/nagios/check_nt -p 5666 -v MEMUSE \
-w 80 -c 90 -H <64bitClient>

Memory usage: total:7939.16 Mb - used: 4101.70 Mb (52%) - free: 3837.46
Mb (48%) | 'Memory usage'=4101.70Mb;6351.33;7145.25;0.00;7939.16

32bit Windows clients shows me _only_ the real memory (same NSClient
Version).

Is it possible to configure check_nt to show me also only the real
memory from the 64bit Windows clients?

We are using nagios-3.0.6_3 and check_nt v1991 (nagios-plugins 1.4.13)
on a FreeBSD 7.2-STABLE Box.

thanks in advance
Richard

I'm not sure about using check_nt; I beliebe the recommended bethog for
NSClient++ is using check_nrpe (you will have to make sure the NEPE
listener module is enabled and properly configured)

Here are example of memory checks you can do with check_nrpe:

Physical memory:
CheckMem ShowAll=long MaxWarn=$ARG1$ MaxCrit=$ARG2$ type=physical

Page file:
CheckMem ShowAll=long MaxWarn=$ARG1$ MaxCrit=$ARG2$ type=virtual

All memort (RAM+SWAP):
CheckMem ShowAll=long MaxWarn=$ARG1$ MaxCrit=$ARG2$ type=paged

You can set them as aliases ($ARGx$ are nrpe arguments) or even call
CheckMem as the NRPE command and the rest of the line are the nrpe
arguments (-a).

- --
Thomas

OK, I've tried to use check_nrpe, but I can't connect to the Windows Client

# ./check_nrpe -H <WindowsClient> -p 5666 -c alias_up
CHECK_NRPE: Error receiving data from host.

When I return to check_nt, I can connect to the Windows Client.

# ./check_nt -H <WindowsClient> -p 5666 -v MEMUSE
Memory usage: total:2469.98 Mb - used: 201.26 Mb (8%) - free: 2268.72 Mb
(92%) | 'Memory usage' 1.26Mb;0.00;0.00;0.00;2469.98

the Client Logfile shows me:

2009-11-19 07:43:04: error:D:\source\NSCP-stable\include\Socket.h:699:
Error: Could not complete SSL handshake : [-1] 1, attempting to resume...

Whats going on? ;-)

Here is my nsc.ini

[modules]
;# NSCLIENT   MODULES
;# A list with DLLs to load at startup.
;  You will need to enable some of these for NSClient   to work.
; ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! !
; *                                                               *
; * N O T I C E ! ! ! - Y O U   H A V E   T O   E D I T   T H I S *
; *                                                               *
; ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! !
FileLogger.dll
CheckSystem.dll
CheckDisk.dll
;NSClientListener.dll
NRPEListener.dll
SysTray.dll
CheckEventLog.dll
CheckHelpers.dll
CheckWMI.dll
;
; Script to check external scripts and/or internal aliases.
;CheckExternalScripts.dll
;
; NSCA Agent if you enable this NSClient   will talk to NSCA hosts
repeatedly (so dont enable unless you want to use NSCA)
;NSCAAgent.dll
;
; LUA script module used to write your own "check deamon".
;LUAScript.dll
;
; RemoteConfiguration IS AN EXTREM EARLY IDEA SO DONT USE FOR PRODUCTION
ENVIROMNEMTS!
;RemoteConfiguration.dll
; Check other hosts through NRPE extreme beta and probably a bit
dangerous! :)
;NRPEClient.dll
; Extreamly early beta of a task-schedule checker
;CheckTaskSched.dll

[Settings]
;# OBFUSCATED PASSWORD
;  This is the same as the password option but here you can store the
password in an obfuscated manner.
;  *NOTICE* obfuscation is *NOT* the same as encryption, someone with
access to this file can still figure out the
;  password. Its just a bit harder to do it at first glance.
;obfuscated_password=Jw0KAUUdXlAAUwASDAAB
;
;# PASSWORD
;  This is the password (-s) that is required to access NSClient
remotely. If you leave this blank everyone will be able to access the
daemon remotly.
;password=secret-password
;
;# ALLOWED HOST ADDRESSES
;  This is a comma-delimited list of IP address of hosts that are
allowed to talk to the all daemons.
;  If leave this blank anyone can access the deamon remotly (NSClient
still requires a valid password).
;  The syntax is host or ip/mask so 192.168.0.0/24 will allow anyone on
that subnet access
allowed_hosts=10.10.41.68,10.10.8.50
;
;# USE THIS FILE
;  Use the INI file as opposed to the registry if this is 0 and the
use_reg in the registry is set to 1
;  the registry will be used instead.
use_file=1
;
; # USE SHARED MEMORY CHANNELS
;  This is the "new" way for using the system tray based on an IPC
framework on top shared memmory channels and events.
;  It is brand new and (probably has bugs) so dont enable this unless
for testing!
;  If set to 1 shared channels will be created and system tray icons
created and such and such...
shared_session=1

[log]
;# LOG DEBUG
;  Set to 1 if you want debug message printed in the log file (debug
messages are always printed to stdout when run with -test)
debug=1
;
;# LOG FILE
;  The file to print log statements to
file=nsclient_glr.log
;
;# LOG DATE MASK
;  The format to for the date/time part of the log entry written to file.
date_mask=%Y-%m-%d %H:%M:%S
;
;# LOG ROOT FOLDER
;  The root folder to use for logging.
;  exe = the folder where the executable is located
;  local-app-data = local application data (probably a better choice
then the old default)
root_folder=exe

[NSClient]
;# ALLOWED HOST ADDRESSES
;  This is a comma-delimited list of IP address of hosts that are
allowed to talk to NSClient deamon.
;  If you leave this blank the global version will be used instead.
allowed_hosts=10.10.41.68,10.10.8.50
;
;# NSCLIENT PORT NUMBER
;  This is the port the NSClientListener.dll will listen to.
port=5666
;
;# BIND TO ADDRESS
;  Allows you to bind server to a specific local address. This has to be
a dotted ip adress not a hostname.
;  Leaving this blank will bind to all avalible IP adresses.
;bind_to_addres;
;# SOCKET TIMEOUT
;  Timeout when reading packets on incoming sockets. If the data has not
arrived withint this time we will bail out.
;socket_timeout=30

[NRPE]
;# NRPE PORT NUMBER
;  This is the port the NRPEListener.dll will listen to.
port=5666
;
;# COMMAND TIMEOUT
;  This specifies the maximum number of seconds that the NRPE daemon
will allow plug-ins to finish executing before killing them off.
;command_timeout=60
;
;# COMMAND ARGUMENT PROCESSING
;  This option determines whether or not the NRPE daemon will allow
clients to specify arguments to commands that are executed.
;allow_arguments=0
;
;# COMMAND ALLOW NASTY META CHARS
;  This option determines whether or not the NRPE daemon will allow
clients to specify nasty (as in |`&><'"\[]{}) characters in arguments.
;allow_nasty_meta_chars=0
;
;# USE SSL SOCKET
;  This option controls if SSL should be used on the socket.
use_ssl=1
;
;# BIND TO ADDRESS
;  Allows you to bind server to a specific local address. This has to be
a dotted ip adress not a hostname.
;  Leaving this blank will bind to all avalible IP adresses.
; bind_to_addres;
;# ALLOWED HOST ADDRESSES
;  This is a comma-delimited list of IP address of hosts that are
allowed to talk to NRPE deamon.
;  If you leave this blank the global version will be used instead.
allowed_hosts=10.10.41.68,10.10.8.50
;
;# SCRIPT DIRECTORY
;  All files in this directory will become check commands.
;  *WARNING* This is undoubtedly dangerous so use with care!
;script_dir=scripts\
;
;# SOCKET TIMEOUT
;  Timeout when reading packets on incoming sockets. If the data has not
arrived withint this time we will bail out.
;socket_timeout=30

[Check System]
;# CPU BUFFER SIZE
;  Can be anything ranging from 1s (for 1 second) to 10w for 10 weeks.
Notice that a larger buffer will waste memory
;  so don't use a larger buffer then you need (ie. the longest check you
do  1).
;CPUBufferSize=1h
;
;# CHECK RESOLUTION
;  The resolution to check values (currently only CPU).
;  The value is entered in 1/10:th of a second and the default is 10
(which means ones every second)
;CheckResolution=10
;
;# CHECK ALL SERVICES
;  Configure how to check services when a CheckAll is performed.
;  ...=started means services in that class *has* to be running.
;  ...=stopped means services in that class has to be stopped.
;  ...=ignored means services in this class will be ignored.
;check_all_services[SERVICE_BOOT_START]=ignored
;check_all_services[SERVICE_SYSTEM_START]=ignored
;check_all_services[SERVICE_AUTO_START]=started
;check_all_services[SERVICE_DEMAND_START]=ignored
;check_all_services[SERVICE_DISABLED]=stopped

[External Script]
;# COMMAND TIMEOUT
;  This specifies the maximum number of seconds that the NRPE daemon
will allow plug-ins to finish executing before killing them off.
;command_timeout=60
;
;# COMMAND ARGUMENT PROCESSING
;  This option determines whether or not the NRPE daemon will allow
clients to specify arguments to commands that are executed.
;allow_arguments=0
;
;# COMMAND ALLOW NASTY META CHARS
;  This option determines whether or not the NRPE daemon will allow
clients to specify nasty (as in |`&><'"\[]{}) characters in arguments.
;allow_nasty_meta_chars=0
;
;# COMMAND ALLOW NASTY META CHARS
;  This option determines whether or not the NRPE daemon will allow
clients to specify nasty (as in |`&><'"\[]{}) characters in arguments.
;script_dir=c:\my\script\dir

[External Scripts]
;check_es_long=scripts\long.bat
;check_es_ok=scripts\ok.bat
;check_es_nok=scripts\nok.bat
;check_vbs_sample=cscript.exe //T:30 //NoLogo scripts\check_vb.vbs
;check_powershell_warn=cmd /c echo scripts\powershell.ps1 |
powershell.exe -command -

[External Alias]
alias_cpu=checkCPU warn=80 crit=90 time=5m time=1m time=30s
alias_cpu_ex=checkCPU warn=$ARG1$ crit=$ARG2$ time=5m time=1m time=30s
alias_disk=CheckDriveSize MinWarn=10% MinCrit=5% CheckAll FilterType=FIXED
alias_service=checkServiceState CheckAll
alias_process=checkProcState $ARG1$=started
alias_mem=checkMem MaxWarn=80% MaxCrit=90% ShowAll type=physical
alias_up=checkUpTime MinWarn=1d MinWarn=1h
alias_file_age=checkFile2 filter=out "file=$ARG1$" filter-written=>1d
MaxWarn=1 MaxCrit=1 "syntax=%filename% %write%"
alias_file_size=checkFile2 filter=out "file=$ARG1$" filter-size=>$ARG2$
MaxWarn=1 MaxCrit=1 "syntax=%filename% %size%"
alias_file_size_in_dir=checkFile2 filter=out pattern=*.txt "file=$ARG1$"
filter-size=>$ARG2$ MaxWarn=1 MaxCrit=1 "syntax=%filename% %size%"
alias_event_log=CheckEventLog file=application file=system filter=new
filter=out MaxWarn=1 MaxCrit=1 filter-generated=>2d
filter-severity==success filter-severity==informational truncate=1023
unique descriptions  "syntax=%severity%: %source%: %message% (%count%)"
alias_event_log2=CheckEventLog file=application file=system filter=new
filter=in MaxWarn=1 MaxCrit=1 filter generated=<2d
"filter eventSource==Service Control Manager" filter severity==error
truncate=1023 unique descriptions  "syntax=%severity%: %source%:
%message% (%count%)"
check_ok=CheckOK Everything is fine!

; [includes]
;# The order when used is "reversed" thus the last included file will be
"first"
;# Included files can include other files (be carefull only do basic
recursive checking)
;
; myotherfile.ini
; real.ini

[NSCA Agent]
;# CHECK INTERVALL (in seconds)
;   How often we should run the checks and submit the results.
;interval=5
;
;# ENCRYPTION METHOD
;   This option determines the method by which the send_nsca client will
encrypt the packets it sends
;   to the nsca daemon. The encryption method you choose will be a
balance between security and
;   performance, as strong encryption methods consume more processor
resources.
;   You should evaluate your security needs when choosing an encryption
method.
;
; Note: The encryption method you specify here must match the decryption
method the nsca daemon uses
;       (as specified in the nsca.cfg file)!!
; Values:
;    0 = None    (Do NOT use this option)
;    1 = Simple XOR  (No security, just obfuscation, but very fast)
;   2 = DES
;   3 = 3DES (Triple DES)
;    4 = CAST-128
;    6 = xTEA
;    8 = BLOWFISH
;    9 = TWOFISH
;    11 = RC2
;    14 = RIJNDAEL-128 (AES)
;    20 = SERPENT
;encryption_method=14
;
;# ENCRYPTION PASSWORD
;  This is the password/passphrase that should be used to encrypt the
sent packets.
;passwor;
;# BIND TO ADDRESS
;  Allows you to bind server to a specific local address. This has to be
a dotted ip adress not a hostname.
;  Leaving this blank will bind to "one" local interface.
; -- not supported as of now --
;bind_to_addres;
;# LOCAL HOST NAME
;  The name of this host (if empty "computername" will be used.
;hostnam;
;# NAGIOS SERVER ADDRESS
;  The address to the nagios server to submit results to.
;nsca_host=192.168.0.1
;
;# NAGIOS SERVER PORT
;  The port to the nagios server to submit results to.
;nsca_port=5667
;

;# CHECK COMMAND LIST
;  The checks to run everytime we submit results back to nagios
;  Any command(alias/key) starting with a host_ is sent as HOST_COMMAND
others are sent as SERVICE_COMMANDS
;  where the alias/key is used as service name.
;
[NSCA Commands]
;my_cpu_check=checkCPU warn=80 crit=90 time m time=10s time=4
;my_mem_check=checkMem MaxWarn=80% MaxCrit=90% ShowAll type=page
;my_svc_check=checkServiceState CheckAll exclude=wampmysqld
exclude=MpfService
;host_check=check_ok

;# REMOTE NRPE PROXY COMMANDS
;  A list of commands that check other hosts.
;  Used by the NRPECLient module
[NRPE Client Handlers]
check_other=-H 192.168.0.1 -p 5666 -c remote_command -a arguments

;# LUA SCRIPT SECTION
;  A list of all Lua scripts to load.
;[LUA Scripts]
;scripts\test.lua

thanks in advance
Richard

This seems to be because your NRPE don't have ssl enabled. Look at the
- --help output of check_nrpe, you should see:

SSL/TLS Available: Anonymous DH Mode, OpenSSL 0.9.6 or higher required

Atlernatively turn this to 0 and use the -n switch in check_nrpe (so if
you upgrade you won't break your checks by enabling SSL)

Make sure tis parameter list the IP/network from your monitoring server
(be extra careful if your monitoring server has multiple VLANs / servers)

- --
Thomas

Hi there,

check_nrpe --help isn't show me something like SSL/TLS.

We are using
NRPE Plugin for Nagios
Copyright (c) 1999-2003 Ethan Galstad (nagios*******)
Version: 1.9
Last Modified: 07-22-2003
License: GPL

OK, I've set use_ssl to "0"

now I'm getting following message:

# ./check_nrpe -H <WindowsClient> -p 5666 -c alias_up
CHECK_NRPE: Received 0 bytes.  Are we allowed to connect to the host?

allowed_hosts entries are 'blank' (only for testing)

the logfile from the Windows Client shows me:

2009-11-21 05:11:39: error:modules\NRPEListener\NRPEListener.cpp:358: We
got more then we wanted 1036, we only got: 1040

for testing, all allowed_hosts entries in nsc.ini are now blank.

This version of check_nrpe is running on our nagios servers:

NRPE Plugin for Nagios
Copyright (c) 1999-2003 Ethan Galstad (nagios*******)
Version: 1.9
Last Modified: 07-22-2003
License: GPL

(I know, its an old version, but at the moment we can't upgrade to the
newest version)

and NSClient++ 0.3.7.493 2009-10-12 on our Windows Clients (32 and 64 bit).

thanks in advance
Richard