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Nsclient not response on Windows client.

PostPosted: Mon Oct 25, 2021 1:25 am
by Ensenada
Hello,

Im trying to configure NRPE check on nagios on windows client, this is the nsclient.ini:

Code: Select all
[/settings/log]

; LOG LEVEL - Log level to use. Available levels are error,warning,info,debug,trace
level = info
; DATEMASK - The size of the buffer to use when getting messages this affects the speed and maximum size of messages you can recieve.
date format = %Y-%m-%d %H:%M:%S
; FILENAME - The file to write log data to. Set this to none to disable log to file.
file name = ${exe-path}/nsclient.log

; A list of modules.
[/modules]

; CheckDisk - CheckDisk can check various file and disk related things.
CheckDisk = 1
; CheckEventLog - Check for errors and warnings in the event log.
CheckEventLog = 1
; CheckExternalScripts - Execute external scripts
CheckExternalScripts = 1
; CheckHelpers - Various helper function to extend other checks.
CheckHelpers = 1
; CheckNSCP - Use this module to check the health and status of NSClient++ itself
CheckNSCP = 1
; CheckSystem - Various system related checks, such as CPU load, process state, service state memory usage and PDH counters.
CheckSystem = 1
; NRPEServer - A server that listens for incoming NRPE connection and processes incoming requests.
NRPEServer = 1
; CheckTaskSched - Check status of your scheduled jobs.
CheckTaskSched = 1
; WEBServer - A server that listens for incoming HTTP connection and processes incoming requests. It provides both a WEB UI as well as a REST API in addition to simplifying configuration of WEB Server module.
WEBServer = 1
; CheckNet - Network related check such as check_ping.
CheckNet = 1

; Section for REST API
[/settings/WEB/server]

; ALLOWED HOSTS - A coma separated list of allowed hosts. You can use netmasks (/ syntax) or * to create ranges.
allowed hosts = 0.0.0.0/0

;CACHE ALLOWED HOSTS - If host names (DNS entries) should be cached, improves speed and security somewhat but won’t allow you to have dynamic IPs for your Nagios server.
cache allowed hosts = true

; PORT NUMBER - Port to use for REST API.
port = 8443

; CERTIFICATE - Ssl certificate to use for the ssl server
certificate = ${certificate-path}/certificate.pem

; Section for REST API roles
[/settings/WEB/server/roles]

limited=*.get

; Section for REST API users
[/settings/WEB/server/users/centreon]

password=
role=limited

; Section for NRPE (NRPEServer.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 coma separated list of allowed hosts. You can use netmasks (/ syntax) or * to create ranges.
allowed hosts = NagiosIP

; PORT NUMBER - Port to use for NRPE.
port = 5666

; Needed for long output, with check_centreon_nrpe
payload length = 8192

; EXTENDED RESPONSE - Send more then 1 return packet to allow response to go beyond payload size (requires modified client).
; extended response = true

; ALLOW INSECURE CHIPHERS and ENCRYPTION - Only enable this if you are using legacy check_nrpe client.
insecure = true

; ENABLE SSL ENCRYPTION - This option controls if SSL should be enabled.
use ssl = true

[/settings/external scripts]
allow arguments = 1
allow nasty characters = 1

[/settings/external scripts/scripts/default]
ignore perfdata = true

[/settings/external scripts/scripts]
check_logfiles=scripts\\centreon\\check_logfiles.exe $ARG1$
check_centreon_plugins=scripts\\centreon\\centreon_plugins.exe --plugin=$ARG1$ --mode=$ARG2$ $ARG3$

test=cscript.exe //T:30 "C:\Program Files\Centreon NSClient++\scripts\powershell.ps1"


When i try to call powershell.ps1:

Code: Select all
./check_nrpe -H serverIP -p 5666 -t 20 test


There is no response, but a timeout error. Firewall access its open.

Do I have to set a password in nsclient.ini? In this case, where do I have to configure it in Nagios console?

Thanks,
Best regards

Re: Nsclient not response on Windows client.

PostPosted: Mon Oct 25, 2021 12:06 pm
by mcapra
You might try calling powershell instead of cscript. Here's a common NSClient++ command template for Powershell scripts, from the official docs:
Code: Select all
test=cmd /c echo scripts\powershell.ps1; exit($lastexitcode) | powershell.exe -command -


I'd have to see the specific contents of the Powershell script to offer much more insight than that.

Re: Nsclient not response on Windows client.

PostPosted: Tue Oct 26, 2021 2:59 am
by Ensenada
Thanks for the answer but still not work.

The script is a test file: write-host "WARN: Everything is not going to be fine!"

I also try with another .vbs script and response its the same.

I think that i must change something on nagios server, but i dont know what