Hi @Captain_Adam
You can use the one coming by default from Debian repositories. You have to modify the configuration file afterwards with the one shipped with the CentOS/Redhat RPM.
We will probably build a deb package but I’m not sure about when.
Kind regards,
Thank you sims24 !
But when I search for centreon-nrpe, I get no results. Is there a repository to add to install this package?
I think the package name is nagios-nrpe-server:
apt-get install nagios-nrpe-server
Hello sims24,
Sorry for the late reply, I just started working on my Centreon project again.
I found the nagios-nrpe-server package for Debian. I also took the conf file from the package on CentOS. The problem is not totally solved. Indeed, when I execute an NRPE request from my Centreon server to my monitorer server, an error appears on the terminal :
CHECK_NRPE: Receive header underflow - only 0 bytes received (4 expected).
Do you have an idea on how to solve the problem?
If you have any ideas, don't hesitate!
Hello :)
I just noticed something important. For the execution of the centreon-plugins.pl file, it is necessary to have installed the different Perl dependencies. Unfortunately, many of these dependencies do not exist in the Debian repos.
Did you manage to use the "centreon-plugins.pl" on Debian?
Hello Captain o7
I just done a quick test with a fresh install of Debian and git clone of the repo.
And I didn’t get any perl error dependencies for the basic mode.
here the perl package installed on my Debian:
root@debian:/opt# dpkg -l | grep -i perl
ii liberror-perl 0.17029-1 all Perl module for error/exception handling in an OO-ish way
ii liblocale-gettext-perl 1.07-4+b1 amd64 module using libc functions for internationalization in Perl
ii libpcre2-8-0:amd64 10.36-2 amd64 New Perl Compatible Regular Expression Library- 8 bit runtime files
ii libpcre3:amd64 2:8.39-13 amd64 Old Perl 5 Compatible Regular Expression Library - runtime files
ii libperl5.32:amd64 5.32.1-4+deb11u2 amd64 shared Perl library
ii libtext-charwidth-perl 0.04-10+b1 amd64 get display widths of characters on the terminal
ii libtext-iconv-perl 1.7-7+b1 amd64 module to convert between character sets in Perl
ii libtext-wrapi18n-perl 0.06-9 all internationalized substitute of Text::Wrap
ii perl 5.32.1-4+deb11u2 amd64 Larry Wall's Practical Extraction and Report Language
ii perl-base 5.32.1-4+deb11u2 amd64 minimal Perl system
ii perl-modules-5.32 5.32.1-4+deb11u2 all Core Perl modules
About the error of nrpe.
Do you have any message server side ? /var/log/syslog ?
What is the exact command executed from centreon ?
Hi Kriko !
This is my syslog file when i launch a command from my Centreon Central (with centreon_plugins) :
May 25 15:15:04 SRV-FOG nrpe 895]: Allowing connections from: 127.0.0.1,192.168.31.14
May 25 15:15:11 SRV-FOG nrpe 918]: Error: Request contained command arguments!
May 25 15:15:11 SRV-FOG nrpe 918]: Client request from 192.168.31.14 was invalid, bailing out...
May 25 15:15:32 SRV-FOG nrpe 922]: Error: (!log_opts) Could not complete SSL handshake with 192.168.31.14: 1
May 25 15:15:39 SRV-FOG nrpe 926]: Error: (!log_opts) Could not complete SSL handshake with 192.168.31.14: 1
May 25 15:16:12 SRV-FOG nrpe 931]: Error: (!log_opts) Could not complete SSL handshake with 192.168.31.14: 1
This is my nrpe.cfg on my debian server :
As you can see, I have allowed the arguments
#############################################################################
#
# Sample NRPE Config File
#
# Notes:
#
# This is a sample configuration file for the NRPE daemon. It needs to be
# located on the remote host that is running the NRPE daemon, not the host
# from which the check_nrpe client is being executed.
#
#############################################################################
# LOG FACILITY
# The syslog facility that should be used for logging purposes.
log_facility=daemon
# LOG FILE
# If a log file is specified in this option, nrpe will write to
# that file instead of using syslog.
#log_file=/var/log/nrpe.log
# DEBUGGING OPTION
# This option determines whether or not debugging messages are logged to the
# syslog facility.
# Values: 0=debugging off, 1=debugging on
debug=0
# PID FILE
# The name of the file in which the NRPE daemon should write it's process ID
# number. The file is only written if the NRPE daemon is started by the root
# user and is running in standalone mode.
pid_file=/var/run/nagios/nrpe.pid
# PORT NUMBER
# Port number we should wait for connections on.
# NOTE: This must be a non-privileged port (i.e. > 1024).
# NOTE: This option is ignored if NRPE is running under either inetd or xinetd
server_port=5666
# SERVER ADDRESS
# Address that nrpe should bind to in case there are more than one interface
# and you do not want nrpe to bind on all interfaces.
# NOTE: This option is ignored if NRPE is running under either inetd or xinetd
#server_address=127.0.0.1
# LISTEN QUEUE SIZE
# Listen queue size (backlog) for serving incoming connections.
# You may want to increase this value under high load.
#listen_queue_size=5
# NRPE USER
# This determines the effective user that the NRPE daemon should run as.
# You can either supply a username or a UID.
#
# NOTE: This option is ignored if NRPE is running under either inetd or xinetd
nrpe_user=nagios
# NRPE GROUP
# This determines the effective group that the NRPE daemon should run as.
# You can either supply a group name or a GID.
#
# NOTE: This option is ignored if NRPE is running under either inetd or xinetd
nrpe_group=nagios
# ALLOWED HOST ADDRESSES
# This is an optional comma-delimited list of IP address or hostnames
# that are allowed to talk to the NRPE daemon. Network addresses with a bit mask
# (i.e. 192.168.1.0/24) are also supported. Hostname wildcards are not currently
# supported.
#
# Note: The daemon only does rudimentary checking of the client's IP
# address. I would highly recommend adding entries in your /etc/hosts.allow
# file to allow only the specified host to connect to the port
# you are running this daemon on.
#
# NOTE: This option is ignored if NRPE is running under either inetd or xinetd
allowed_hosts=127.0.0.1,192.168.31.14
# COMMAND ARGUMENT PROCESSING
# This option determines whether or not the NRPE daemon will allow clients
# to specify arguments to commands that are executed. This option only works
# if the daemon was configured with the --enable-command-args configure script
# option.
#
# *** ENABLING THIS OPTION IS A SECURITY RISK! ***
# Read the SECURITY file for information on some of the security implications
# of enabling this variable.
#
# Values: 0=do not allow arguments, 1=allow command arguments
dont_blame_nrpe=1
# BASH COMMAND SUBSTITUTION
# This option determines whether or not the NRPE daemon will allow clients
# to specify arguments that contain bash command substitutions of the form
# $(...). This option only works if the daemon was configured with both
# the --enable-command-args and --enable-bash-command-substitution configure
# script options.
#
# *** ENABLING THIS OPTION IS A HIGH SECURITY RISK! ***
# Read the SECURITY file for information on some of the security implications
# of enabling this variable.
#
# Values: 0=do not allow bash command substitutions,
# 1=allow bash command substitutions
allow_bash_command_substitution=1
# COMMAND PREFIX
# This option allows you to prefix all commands with a user-defined string.
# A space is automatically added between the specified prefix string and the
# command line from the command definition.
#
# *** THIS EXAMPLE MAY POSE A POTENTIAL SECURITY RISK, SO USE WITH CAUTION! ***
# Usage scenario:
# Execute restricted commmands using sudo. For this to work, you need to add
# the nagios user to your /etc/sudoers. An example entry for allowing
# execution of the plugins from might be:
#
# nagios ALL=(ALL) NOPASSWD: /usr/lib/nagios/plugins/
#
# This lets the nagios user run all commands in that directory (and only them)
# without asking for a password. If you do this, make sure you don't give
# random users write access to that directory or its contents!
# command_prefix=/usr/bin/sudo
# MAX COMMANDS
# This specifies how many children processes may be spawned at any one
# time, essentially limiting the fork()s that occur.
# Default (0) is set to unlimited
# max_commands=0
# COMMAND TIMEOUT
# This specifies the maximum number of seconds that the NRPE daemon will
# allow plugins to finish executing before killing them off.
command_timeout=60
# CONNECTION TIMEOUT
# This specifies the maximum number of seconds that the NRPE daemon will
# wait for a connection to be established before exiting. This is sometimes
# seen where a network problem stops the SSL being established even though
# all network sessions are connected. This causes the nrpe daemons to
# accumulate, eating system resources. Do not set this too low.
connection_timeout=300
# WEAK RANDOM SEED OPTION
# This directive allows you to use SSL even if your system does not have
# a /dev/random or /dev/urandom (on purpose or because the necessary patches
# were not applied). The random number generator will be seeded from a file
# which is either a file pointed to by the environment valiable $RANDFILE
# or $HOME/.rnd. If neither exists, the pseudo random number generator will
# be initialized and a warning will be issued.
# Values: 0=only seed from /dev/ u]random, 1=also seed from weak randomness
#allow_weak_random_seed=1
# SSL/TLS OPTIONS
# These directives allow you to specify how to use SSL/TLS.
# SSL VERSION
# This can be any of: SSLv2 (only use SSLv2), SSLv2+ (use any version),
# SSLv3 (only use SSLv3), SSLv3+ (use SSLv3 or above), TLSv1 (only use
# TLSv1), TLSv1+ (use TLSv1 or above), TLSv1.1 (only use TLSv1.1),
# TLSv1.1+ (use TLSv1.1 or above), TLSv1.2 (only use TLSv1.2),
# TLSv1.2+ (use TLSv1.2 or above)
# If an "or above" version is used, the best will be negotiated. So if both
# ends are able to do TLSv1.2 and use specify SSLv2, you will get TLSv1.2.
# If you are using openssl 1.1.0 or above, the SSLv2 options are not available.
#ssl_version=SSLv2+
# SSL USE ADH
# This is for backward compatibility and is DEPRECATED. Set to 1 to enable
# ADH or 2 to require ADH. 1 is currently the default but will be changed
# in a later version.
#ssl_use_adh=1
# SSL CIPHER LIST
# This lists which ciphers can be used. For backward compatibility, this
# defaults to 'ssl_cipher_list=ALL:!MD5:@STRENGTH' for < OpenSSL 1.1.0,
# and 'ssl_cipher_list=ALL:!MD5:@STRENGTH:@SECLEVEL=0' for OpenSSL 1.1.0 and
# greater.
#ssl_cipher_list=ALL:!MD5:@STRENGTH
#ssl_cipher_list=ALL:!MD5:@STRENGTH:@SECLEVEL=0
#ssl_cipher_list=ALL:!aNULL:!eNULL:!SSLv2:!LOW:!EXP:!RC4:!MD5:@STRENGTH
# SSL Certificate and Private Key Files
#ssl_cacert_file=/etc/ssl/servercerts/ca-cert.pem
#ssl_cert_file=/etc/ssl/servercerts/nagios-cert.pem
#ssl_privatekey_file=/etc/ssl/servercerts/nagios-key.pem
# SSL USE CLIENT CERTS
# This options determines client certificate usage.
# Values: 0 = Don't ask for or require client certificates (default)
# 1 = Ask for client certificates
# 2 = Require client certificates
#ssl_client_certs=0
# SSL LOGGING
# This option determines which SSL messages are send to syslog. OR values
# together to specify multiple options.
# Values: 0x00 (0) = No additional logging (default)
# 0x01 (1) = Log startup SSL/TLS parameters
# 0x02 (2) = Log remote IP address
# 0x04 (4) = Log SSL/TLS version of connections
# 0x08 (8) = Log which cipher is being used for the connection
# 0x10 (16) = Log if client has a certificate
# 0x20 (32) = Log details of client's certificate if it has one
# -1 or 0xff or 0x2f = All of the above
#ssl_logging=0x00
# NASTY METACHARACTERS
# This option allows you to override the list of characters that cannot
# be passed to the NRPE daemon.
# nasty_metachars="|`&><'\\l]{};\r\n"
# COMMAND DEFINITIONS
# Command definitions that this daemon will run. Definitions
# are in the following format:
#
# commando<command_name>]=<command_line>
#
# When the daemon receives a request to return the results of <command_name>
# it will execute the command specified by the <command_line> argument.
#
# Unlike Nagios, the command line cannot contain macros - it must be
# typed exactly as it should be executed.
#
# Note: Any plugins that are used in the command lines must reside
# on the machine that this daemon is running on! The examples below
# assume that you have plugins installed in a /usr/local/nagios/libexec
# directory. Also note that you will have to modify the definitions below
# to match the argument format the plugins expect. Remember, these are
# examples only!
# The following examples use hardcoded command arguments...
# This is by far the most secure method of using NRPE
commandocheck_users]=/usr/lib/nagios/plugins/check_users -w 5 -c 10
commandocheck_load]=/usr/lib/nagios/plugins/check_load -r -w .15,.10,.05 -c .30,.25,.20
commandocheck_hda1]=/usr/lib/nagios/plugins/check_disk -w 20% -c 10% -p /dev/hda1
commandocheck_zombie_procs]=/usr/lib/nagios/plugins/check_procs -w 5 -c 10 -s Z
commandocheck_total_procs]=/usr/lib/nagios/plugins/check_procs -w 150 -c 200
commandocheck_centreon_plugins]=/usr/lib/centreon/plugins/centreon_plugins.pl --plugin=$ARG1$ --mode=$ARG2$ $ARG3$
# The following examples allow user-supplied arguments and can
# only be used if the NRPE daemon was compiled with support for
# command arguments *AND* the dont_blame_nrpe directive in this
# config file is set to '1'. This poses a potential security risk, so
# make sure you read the SECURITY file before doing this.
### MISC SYSTEM METRICS ###
#commandocheck_users]=/usr/lib/nagios/plugins/check_users $ARG1$
#commandocheck_load]=/usr/lib/nagios/plugins/check_load $ARG1$
#commandocheck_disk]=/usr/lib/nagios/plugins/check_disk $ARG1$
#commandocheck_swap]=/usr/lib/nagios/plugins/check_swap $ARG1$
#commandocheck_cpu_stats]=/usr/lib/nagios/plugins/check_cpu_stats.sh $ARG1$
#commandocheck_mem]=/usr/lib/nagios/plugins/custom_check_mem -n $ARG1$
### GENERIC SERVICES ###
#commandocheck_init_service]=sudo /usr/lib/nagios/plugins/check_init_service $ARG1$
#commandocheck_services]=/usr/lib/nagios/plugins/check_services -p $ARG1$
### SYSTEM UPDATES ###
#commandocheck_yum]=/usr/lib/nagios/plugins/check_yum
#commandocheck_apt]=/usr/lib/nagios/plugins/check_apt
### PROCESSES ###
#commandocheck_all_procs]=/usr/lib/nagios/plugins/custom_check_procs
#commandocheck_procs]=/usr/lib/nagios/plugins/check_procs $ARG1$
### OPEN FILES ###
#commandocheck_open_files]=/usr/lib/nagios/plugins/check_open_files.pl $ARG1$
### NETWORK CONNECTIONS ###
#commandocheck_netstat]=/usr/lib/nagios/plugins/check_netstat.pl -p $ARG1$ $ARG2$
### ASTERISK ###
#commandocheck_asterisk]=/usr/lib/nagios/plugins/check_asterisk.pl $ARG1$
#commandocheck_sip]=/usr/lib/nagios/plugins/check_sip $ARG1$
#commandocheck_asterisk_sip_peers]=sudo /usr/lib/nagios/plugins/check_asterisk_sip_peers.sh $ARG1$
#commandocheck_asterisk_version]=/usr/lib/nagios/plugins/nagisk.pl -c version
#commandocheck_asterisk_peers]=/usr/lib/nagios/plugins/nagisk.pl -c peers
#commandocheck_asterisk_channels]=/usr/lib/nagios/plugins/nagisk.pl -c channels
#commandocheck_asterisk_zaptel]=/usr/lib/nagios/plugins/nagisk.pl -c zaptel
#commandocheck_asterisk_span]=/usr/lib/nagios/plugins/nagisk.pl -c span -s 1
# INCLUDE CONFIG FILE
# This directive allows you to include definitions from an external config file.
#include=<somefile.cfg>
# INCLUDE CONFIG DIRECTORY
# This directive allows you to include definitions from config files (with a
# .cfg extension) in one or more directories (with recursion).
#include_dir=<somedirectory>
#include_dir=<someotherdirectory>
# local configuration:
# if you'd prefer, you can instead place directives here
include=/etc/nagios/nrpe_local.cfg
# you can place your config snipplets into nrpe.d/
# only snipplets ending in .cfg will get included
include_dir=/etc/nagios/nrpe.d/
Here the issue:
May 25 15:15:11 SRV-FOG nrpee918]: Error: Request contained command arguments!
May 25 15:15:11 SRV-FOG nrpee918]: Client request from 192.168.31.14 was invalid, bailing out...
After some “investigation” on the internet, it seems that the maintener of the package doesn’t allow the usage of arguments:
https://serverfault.com/questions/996115/nagios-nrpe-wont-allow-arguments
* r023e909] Disable command-args in nrpe. (Closes: #745272) from (https://metadata.ftp-master.debian.org/changelogs//main/n/nagios-nrpe/nagios-nrpe_3.0.1-3+deb9u1_changelog)
I guess that you need to compile the daemon with the option to enable args.
Hi Kriko,
I comeback with good news !
I have reinstall the nrpe on my Debian with the tar.gz file from the nagios official site.
It’s work ! I created a bash script to avoid having problems again !
Thanks for your help anyway :)
