NRPE¶
The nep-nrpe-base package provides support for implementing agentless basic monitoring.
With nep-nrpe-base it is possible to perform standard monitoring of:
Linux servers
Winodws servers
Using the objects provided, it is possible:
Perform basic check based on NRPE (CPU load, memory usage, disk space usage, swap usage, server uptime)
Minimum supported environment¶
This package can be installed on systems running the software described below. Systems with equivalent components are also suitable for installation.
Required software |
Requirements |
|---|---|
NetEye |
Version |
NetEye modules |
|
Package requirements¶
Service and Host Template shipped with package nep-nrpe-base require the following nep:
nep-common
The Package require the installation of following packages:
compat-openssl10.x86_64
libnsl.x86_64
On NetEye environment this operation is automatically done by Setup Routine. Check and add the port 5666 in the firewall configuration on the public interface:
firewall-cmd --get-active-zones
firewall-cmd --zone=public --add-port=5666/tcp --permanent
firewall-cmd --reload
Setup instructions¶
If all requirements are met, you can now install this package. To manually set up the nep-nrpe-base package, just use nep-setup utility to install it.
nep-setup install nep-nrpe-base
Setup On the Linux Client
yum install epel-release
yum --enablerepo=epel -y install nrpe nagios-plugins
systemctl enable nrpe.service
systemctl start nrpe.service
Check that the NRPE service is in a running state and listening on port 5666:
netstat -anop | grep nrpe
tcp 0 0 0.0.0.0:5666 0.0.0.0:* LISTEN 13542/nrpe off (0.00/0/0)
tcp6 0 0 :::5666 :::* LISTEN 13542/nrpe off (0.00/0/0)
Edit configuration file:
vim /etc/nagios/nrpe.cfg
Add the subnet to the configuration file:
allowed_hosts=127.0.0.1,::1,[YOUR SUBNET, ie: 192.168.1.0]
Ensure that the ‘dont_blame_nrpe’ is set to 1 to accept the NRPE parameters:
dont_blame_nrpe=1
The default commands do not accept parameters, so the following NEP-compatible commands must be added:
command[nx_check_load]=/usr/lib64/nagios/plugins/check_load $ARG1$
command[nx_check_disk]=/usr/lib64/nagios/plugins/check_disk $ARG1$
command[nx_check_swap]=/usr/lib64/nagios/plugins/check_swap $ARG1$
command[nx_check_mem]=/usr/lib64/nagios/plugins/check_mem $ARG1$
command[nx_check_users]=/usr/lib64/nagios/plugins/check_users $ARG1$ $ARG2$
command[nx_check_cpu_stats]=/usr/lib64/nagios/plugins/check_cpu_stats.sh $ARG1$
command[nx_check_mem]=/usr/lib64/nagios/plugins/custom_check_mem -n $ARG1$
command[nx_check_init_service]=sudo /usr/lib64/nagios/plugins/check_init_service $ARG1$
command[nx_check_services]=/usr/lib64/nagios/plugins/check_services -p $ARG1$
command[nx_check_yum]=/usr/lib64/nagios/plugins/check_yum
command[nx_check_apt]=/usr/lib64/nagios/plugins/check_apt
command[nx_check_all_procs]=/usr/lib64/nagios/plugins/custom_check_procs
command[nx_check_procs]=/usr/lib64/nagios/plugins/check_procs $ARG1$
command[nx_check_open_files]=/usr/lib64/nagios/plugins/check_open_files.pl $ARG1$
command[nx_check_netstat]=/usr/lib64/nagios/plugins/check_netstat.pl -p $ARG1$ $ARG2$
Save, Exit and then restart the service:
systemctl restart nrpe.service
systemctl status nrpe.service
● nrpe.service - Nagios Remote Program Executor
Loaded: loaded (/usr/lib/systemd/system/nrpe.service; enabled; vendor preset: disabled)
Active: active (running) since Fri 2022-08-05 17:12:10 CEST; 8s ago
Docs: http://www.nagios.org/documentation
Process: 13607 ExecStopPost=/bin/rm -f /run/nrpe/nrpe.pid (code=exited, status=0/SUCCESS)
Main PID: 13609 (nrpe)
CGroup: /system.slice/nrpe.service
└─13609 /usr/sbin/nrpe -c /etc/nagios/nrpe.cfg -f
Aug 05 17:12:10 centos7-test systemd[1]: Started Nagios Remote Program Executor.
Aug 05 17:12:10 centos7-test nrpe[13609]: Starting up daemon
Aug 05 17:12:10 centos7-test nrpe[13609]: Server listening on 0.0.0.0 port 5666.
Aug 05 17:12:10 centos7-test nrpe[13609]: Server listening on :: port 5666.
Aug 05 17:12:10 centos7-test nrpe[13609]: Listening for connections on port 5666
Aug 05 17:12:10 centos7-test nrpe[13609]: Allowing connections from: 127.0.0.1,::1,192.168.1.0/24
Setup On the Windows Client
Download and Install the NSCP++ Agent NSCP-0.5.2.35-x64.msi (https://github.com/mickem/nscp/releases/tag/0.5.2.35)
Edit the config file for NSCP++ (C:Program FilesNSClient++nsclient.ini)
# If you want to fill this file with all available options run the following command:
# nscp settings --generate --add-defaults --load-all
# If you want to activate a module and bring in all its options use:
# nscp settings --activate-module <MODULE NAME> --add-defaults
# For details run: nscp settings --help
; in flight - TODO
[/settings/default]
; Undocumented key
#Password for access to local web server used for configuration of NSCP++
password = xxxxxxx
; Undocumented key
allowed hosts = 127.0.0.1,[YOUR SUBNET OR NETEYE SERVER, ie: 192.168.1.0]/24
; in flight - TODO
[/settings/NRPE/server]
allowed hosts=127.0.0.1,[YOUR SUBNET OR NETEYE SERVER, ie: 192.168.1.0]/24
allow arguments=true
allow nasty characters=true
insecure=true
; Undocumented key
verify mode = none
; Undocumented key
insecure = true
; in flight - TODO
[/modules]
; Undocumented key
CheckExternalScripts = enabled
; Undocumented key
CheckHelpers = enabled
; Undocumented key
CheckNSCP = enabled
; Undocumented key
CheckDisk = enabled
; Undocumented key
WEBServer = enabled
; Undocumented key
CheckSystem = enabled
; Undocumented key
NSClientServer = enabled
; Undocumented key
CheckEventLog = enabled
; Undocumented key
NSCAClient = enabled
; Undocumented key
NRPEServer = enabled
CheckWMI = enabled
CheckLogFile = enabled
SimpleFileWriter = enabled
SimpleCache = enabled
; SyslogClient - Forward information as syslog messages to a syslog server
SyslogClient = enabled
; NRPEClient - NRPE client can be used both from command line and from queries to check remote systes via NRPE as well as configure the NRPE server
NRPEClient = enabled
; NRDPClient - NRDP client can be used both from command line and from queries to check remote systes via NRDP
NRDPClient = enabled
; DotnetPlugin - Plugin to load and manage plugins written in dot net.
DotnetPlugins = enabled
; CommandClient - A command line client, generally not used except with "nscp test".
CommandClient = enabled
; CheckNet - Network related check such as check_ping.
CheckNet = enabled
; Scheduler - Use this to schedule check commands and jobs in conjunction with for instance passive monitoring through NSCA
Scheduler = enabled
; Op5Client - Client for connecting nativly to the Op5 Nortbound API
Op5Client = enabled
; SMTPClient - SMTP client can be used both from command line and from queries to check remote systes via SMTP
SMTPClient = enabled
; LUAScript - Loads and processes internal Lua scripts
LUAScript = enabled
; PythonScript - Loads and processes internal Python scripts
PythonScript = enabled
; GraphiteClient - Graphite client can be used to submit graph data to a graphite graphing system
GraphiteClient = enabled
; CheckTaskSched - Check status of your scheduled jobs.
CheckTaskSched = enabled
; NSCAServer - A server that listens for incoming NSCA connection and processes incoming requests.
NSCAServer = enabled
# Section for WEB (WEBServer.dll) (check_WEB) protocol options.
[/settings/WEB/server]
allowed hosts = 127.0.0.1,[YOUR SUBNET, ie: 192.168.1.0]/24
cache allowed hosts = true
certificate = ${certificate-path}/certificate.pem
port = 8443
threads = 10
; Script wrappings - A list of templates for defining script commands. Enter any command line here and they will be expanded by scripts placed under the wrapped scripts section. %SCRIPT% will be replaced by the actual script an %ARGS% will be replaced by any given arguments.
[/settings/external scripts/wrappings]
; Batch file - Command used for executing wrapped batch files
bat = scripts\\%SCRIPT% %ARGS%
; Visual basic script - Command line used for wrapped vbs scripts
vbs = cscript.exe //T:30 //NoLogo scripts\\lib\\wrapper.vbs %SCRIPT% %ARGS%
; POWERSHELL WRAPPING - Command line used for executing wrapped ps1 (powershell) scripts
ps1 = cmd /c echo If (-Not (Test-Path "scripts\%SCRIPT%") ) { Write-Host "UNKNOWN: Script `"%SCRIPT%`" not found."; exit(3) }; scripts\%SCRIPT% $ARGS$; exit($lastexitcode) | powershell.exe /noprofile -command -
In this example of the configuration file, all modules including the web server have been activated! Ensure that port 5666 is open.
Available Objects¶
This section contains a description of all the Objects from this package that can be used to build your own monitoring environment.
Director Objects¶
This package contains the following Director Objects:
Data Lists
Datalist name |
Description |
|---|---|
[NX] NRPE Target Type |
Used to list the types of operating systems and discriminate the type of agent to be used |
Host Templates
The following Host Templates can be used to freely create Host Objects. Remember: do not edit these Host Templates because they will be restored/updated at the next NEP package update.
Host Template name |
Description |
|---|---|
nx-ht-server-agentless-nrpe |
Generic NRPE object. |
nx-ht-server-agentless-nrpe-linux |
Generic NRPE Linux Host Template |
nx-ht-server-agentless-nrpe-windows |
Generic NRPE Windows Host Template |
nx-ht-server-agentless-nrpe-windows-legacy |
Generic NRPE Windows Legacy Host Template |
Service Templates
The following Service Templates can be used to freely create Service Objects, Service Apply Rules or Service Sets. Remember to not edit these Service Templates because they will be restored/updated at the next NEP Package update.
Template name |
Run on Agent |
Description |
|---|---|---|
nx-st-agentless-nrpe |
[Yes] |
Generic Service Template for NRPE |
nx-st-agentless-nrpe-linux |
[Yes] |
Generic Service Template for NRPE Linux |
nx-st-agentless-nrpe-linux-check-nrpe |
[Yes] |
Used for NRPE Version |
nx-st-agentless-nrpe-linux-cpu-load |
[Yes] |
Measures the performances of CPU |
nx-st-agentless-nrpe-linux-disk-space-usage |
[Yes] |
Measuring the Disk space utilisation |
nx-st-agentless-nrpe-linux-memory-usage |
[Yes] |
Measuring the Memory utilisation |
nx-st-agentless-nrpe-linux-swap-usage |
[Yes] |
Measuring swap utilisation |
nx-st-agentless-nrpe-linux-uptime |
[Yes] |
Measures the time of System Uptime |
nx-st-agentless-nrpe-windows |
[Yes] |
Generic Service Template for NRPE Windows |
nx-st-agentless-nrpe-windows-counters |
[Yes] |
Check the specific performance counter |
nx-st-agentless-nrpe-windows-cpu-load |
[Yes] |
Measures the performances of CPU |
nx-st-agentless-nrpe-windows-cpu-load-legacy |
[Yes] |
Measures the performances of CPU |
nx-st-agentless-nrpe-windows-disk-space-usage |
[Yes] |
Measuring the Disk space utilisation |
nx-st-agentless-nrpe-windows-disk-space-usage-legacy |
[Yes] |
Measuring the Disk space utilisation |
nx-st-agentless-nrpe-windows-memory-usage |
[Yes] |
Measuring the Memory utilisation |
nx-st-agentless-nrpe-windows-memory-usage-legacy |
[Yes] |
Measuring the Memory utilisation |
nx-st-agentless-nrpe-windows-network |
[Yes] |
Measuring the Network utilisation |
nx-st-agentless-nrpe-windows-os-version |
[Yes] |
Check the Operating system version |
nx-st-agentless-nrpe-windows-pagefile-usage |
[Yes] |
Measuring swap utilisation |
nx-st-agentless-nrpe-windows-process |
[Yes] |
Check system process |
nx-st-agentless-nrpe-windows-service |
[Yes] |
Check Service state |
nx-st-agentless-nrpe-windows-uptime |
[Yes] |
Measures the time of System Uptime |
nx-st-agentless-nrpe-windows-uptime-legacy |
[Yes] |
Measures the time of System Uptime |
nx-st-agentless-nrpe-windows-wmi |
[Yes] |
Check the specific WMI Query |
Service Sets
The following Service Sets can be used to freely monitor Host Objects. Remember to not edit these Service Sets because they will be restored/updated at the next NEP Package update.
Service Set name |
Description |
|---|---|
nx-ss-server-agentless-nrpe-linux-basic |
Service Set providing common monitoring for Linux-based servers |
nx-ss-server-agentless-nrpe-windows-basic |
Service Set providing common monitoring for Windows-based servers |
nx-ss-server-agentless-nrpe-windows-basic-legacy |
Service Set providing common monitoring for Windows-based servers Legacy |
Package’s objects list¶
Object Type |
Object Name |
Do not edit |
Containing File |
|---|---|---|---|
Director Command |
nx-c-check-nrpe |
No |
baskets/import/nep-nrpe-base-02-command.json |
Director Data List |
[NX] NRPE Target Type |
No |
baskets/import/nep-nrpe-base-01-datalist.json |
Director Host Template |
nx-ht-server-agentless-nrpe-linux |
No |
baskets/import/nep-nrpe-base-03-host.json |
Director Host Template |
nx-ht-server-agentless-nrpe |
No |
baskets/import/nep-nrpe-base-03-host.json |
Director Host Template |
nx-ht-server-agentless-nrpe-windows-legacy |
No |
baskets/import/nep-nrpe-base-03-host.json |
Director Host Template |
nx-ht-server-agentless-nrpe-windows |
No |
baskets/import/nep-nrpe-base-03-host.json |
Director Service Set |
nx-ss-server-agentless-nrpe-linux-basic |
No |
baskets/import/nep-nrpe-base-05-serviceset.json |
Director Service Set |
nx-ss-server-agentless-nrpe-windows-basic-legacy |
No |
baskets/import/nep-nrpe-base-05-serviceset.json |
Director Service Set |
nx-ss-server-agentless-nrpe-windows-basic |
No |
baskets/import/nep-nrpe-base-05-serviceset.json |
Director Service Template |
nx-st-agentless-nrpe-linux-check-nrpe |
No |
baskets/import/nep-nrpe-base-04-service.json |
Director Service Template |
nx-st-agentless-nrpe-linux-cpu-load |
No |
baskets/import/nep-nrpe-base-04-service.json |
Director Service Template |
nx-st-agentless-nrpe-linux-disk-space-usage |
No |
baskets/import/nep-nrpe-base-04-service.json |
Director Service Template |
nx-st-agentless-nrpe-linux-memory-usage |
No |
baskets/import/nep-nrpe-base-04-service.json |
Director Service Template |
nx-st-agentless-nrpe-linux |
No |
baskets/import/nep-nrpe-base-04-service.json |
Director Service Template |
nx-st-agentless-nrpe-linux-swap-usage |
No |
baskets/import/nep-nrpe-base-04-service.json |
Director Service Template |
nx-st-agentless-nrpe-linux-uptime |
No |
baskets/import/nep-nrpe-base-04-service.json |
Director Service Template |
nx-st-agentless-nrpe |
No |
baskets/import/nep-nrpe-base-04-service.json |
Director Service Template |
nx-st-agentless-nrpe-windows-counters |
No |
baskets/import/nep-nrpe-base-04-service.json |
Director Service Template |
nx-st-agentless-nrpe-windows-cpu-load-legacy |
No |
baskets/import/nep-nrpe-base-04-service.json |
Director Service Template |
nx-st-agentless-nrpe-windows-cpu-load |
No |
baskets/import/nep-nrpe-base-04-service.json |
Director Service Template |
nx-st-agentless-nrpe-windows-disk-space-usage-legacy |
No |
baskets/import/nep-nrpe-base-04-service.json |
Director Service Template |
nx-st-agentless-nrpe-windows-disk-space-usage |
No |
baskets/import/nep-nrpe-base-04-service.json |
Director Service Template |
nx-st-agentless-nrpe-windows-memory-usage-legacy |
No |
baskets/import/nep-nrpe-base-04-service.json |
Director Service Template |
nx-st-agentless-nrpe-windows-memory-usage |
No |
baskets/import/nep-nrpe-base-04-service.json |
Director Service Template |
nx-st-agentless-nrpe-windows-network |
No |
baskets/import/nep-nrpe-base-04-service.json |
Director Service Template |
nx-st-agentless-nrpe-windows |
No |
baskets/import/nep-nrpe-base-04-service.json |
Director Service Template |
nx-st-agentless-nrpe-windows-os-version |
No |
baskets/import/nep-nrpe-base-04-service.json |
Director Service Template |
nx-st-agentless-nrpe-windows-pagefile-usage |
No |
baskets/import/nep-nrpe-base-04-service.json |
Director Service Template |
nx-st-agentless-nrpe-windows-process |
No |
baskets/import/nep-nrpe-base-04-service.json |
Director Service Template |
nx-st-agentless-nrpe-windows-service |
No |
baskets/import/nep-nrpe-base-04-service.json |
Director Service Template |
nx-st-agentless-nrpe-windows-uptime-legacy |
No |
baskets/import/nep-nrpe-base-04-service.json |
Director Service Template |
nx-st-agentless-nrpe-windows-uptime |
No |
baskets/import/nep-nrpe-base-04-service.json |
Director Service Template |
nx-st-agentless-nrpe-windows-wmi |
No |
baskets/import/nep-nrpe-base-04-service.json |
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