Initial commit

This commit is contained in:
nemunaire 2023-03-25 16:31:54 +01:00
commit c0dec80308
6 changed files with 489 additions and 0 deletions

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defaults/main.yml Normal file
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---
nagios_extra_groups: []

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handlers/main.yml Normal file
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---
- name: reload nrpe
service:
name: nrpe
state: restarted
- name: reload nagios-nrpe-server
service:
name: nagios-nrpe-server
state: restarted
- name: restart nagios-server
docker_container:
name: monitor
restart: yes
delegate_to: "{{ item }}"
with_items: "{{ groups['nagios_hosts'] }}"

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meta/main.yml Normal file
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---
dependencies: []
galaxy_info:
role_name: common
author: 'Pierre-Olivier Mercier <nemunaire+iac@nemunai.re>'
description: Install and configure nrpe server
license: GPL-3.0-or-later
min_ansible_version: 2.9
platforms:
- name: Alpine
versions:
- all
- name: Debian
versions:
- all
galaxy_tags: []

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tasks/main.yml Normal file
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---
- name: install nrpe packages (debian)
apt:
name:
- nagios-nrpe-server
- nagios-nrpe-plugin
state: present
update_cache: yes
when: ansible_distribution == 'Debian'
- name: install nrpe packages (alpine)
apk:
name:
- nagios-plugins-disk
- nagios-plugins-load
- nagios-plugins-ntp
- nagios-plugins-procs
- nagios-plugins-users
- nrpe
state: present
update_cache: yes
when: ansible_distribution == 'Alpine'
- name: configure nrpe
template:
src: nrpe.cfg.j2
dest: /etc/nrpe.cfg
notify:
- reload nrpe
when: ansible_distribution == 'Alpine'
- name: configure nrpe
template:
src: nrpe.cfg.j2
dest: /etc/nagios/nrpe.cfg
notify:
- reload nagios-nrpe-server
when: ansible_distribution == 'Debian'
- name: ensure nrpe is running
service:
name: nrpe
enabled: yes
state: started
when: ansible_distribution == 'Alpine'
tags:
- pkg
- name: register the new host on nagios
template:
src: server.cfg.j2
dest: "/etc/nagios/servers/{{ inventory_hostname_short }}.cfg"
delegate_to: "{{ item }}"
with_items: "{{ groups['nagios_hosts'] }}"
notify:
- restart nagios-server

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templates/nrpe.cfg.j2 Normal file
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#############################################################################
#
# 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/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
# 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
# NOTE: OpenRC starts NRPE already as nagios user. You can change the user
# in /etc/conf.d/nrpe.
#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
# NOTE: OpenRC starts NRPE already as nagios group. You can change the
# group in /etc/conf.d/nrpe.
#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={{ nagios_host }},monitor.p0m.fr,2a01:e0a:518:830::a
# 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=0
# 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=0
# 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/certs/ca-certificates.crt
#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="|`&><'\\[]{};\r\n"
# COMMAND DEFINITIONS
# Command definitions that this daemon will run. Definitions
# are in the following format:
#
# command[<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
command[check_users]=/usr/lib/nagios/plugins/check_users -w 5 -c 10
command[check_load]=/usr/lib/nagios/plugins/check_load -r -w 7,3.5,3 -c 8,4,3.5
command[check_disks]=/usr/lib/nagios/plugins/check_disk -w 16% -c 9% -A -i /var/lib/docker/overlay2 -i /var/lib/docker/containers -i /run/docker/{% if inventory_hostname == 'geb.ra.nemunai.re' %} -i /media/musik{% endif %}
command[check_hda1]=/usr/lib/nagios/plugins/check_disk -w 20% -c 10% -p /dev/hda1
command[check_zombie_procs]=/usr/lib/nagios/plugins/check_procs -w 5 -c 10 -s Z
{% if inventory_hostname == 'geb.ra.nemunai.re' or inventory_hostname == 'jizah.masr.nemunai.re' %}
command[check_total_procs]=/usr/lib/nagios/plugins/check_procs -w 260 -c 300
{% else %}
command[check_total_procs]=/usr/lib/nagios/plugins/check_procs -w 190 -c 220
{% endif %}
{% if inventory_hostname == 'hesat.ra.nemunai.re' %}
command[check_ntp_time]=/usr/lib/nagios/plugins/check_ntp_time -H fr.pool.ntp.org -w 1 -c 2
{% else %}
command[check_ntp_time]=/usr/lib/nagios/plugins/check_ntp_time -H {{ ntp_pool[0] }} -w 1 -c 2
{% endif %}
{% if inventory_hostname == 'geb.ra.nemunai.re' %}
command[check_log_age_ankh.serekh.nemunai.re]=/usr/lib/nagios/plugins/check_file_age -w 1800 -c 3600 -W 32 -C 32 /var/log/ankh.serekh.nemunai.re/messages.log
command[check_log_age_geb.ra.nemunai.re]=/usr/lib/nagios/plugins/check_file_age -w 1800 -c 3600 -W 32 -C 32 /var/log/geb.ra.nemunai.re/messages.log
command[check_log_age_hathor.ra.nemunai.re]=/usr/lib/nagios/plugins/check_file_age -w 1800 -c 3600 -W 32 -C 32 /var/log/hathor.ra.nemunai.re/messages.log
command[check_log_age_montou.ra.nemunai.re]=/usr/lib/nagios/plugins/check_file_age -w 1800 -c 3600 -W 32 -C 32 /var/log/montou.ra.nemunai.re/messages.log
command[check_log_age_nout.ra.nemunai.re]=/usr/lib/nagios/plugins/check_file_age -w 1800 -c 3600 -W 32 -C 32 /var/log/nout.ra.nemunai.re/messages.log
command[check_log_age_sekhmet0.ra.nemunai.re]=/usr/lib/nagios/plugins/check_file_age -w 1800 -c 3600 -W 32 -C 32 /var/log/sekhmet0.ra.nemunai.re/messages.log
command[check_log_age_sekhmet1.ra.nemunai.re]=/usr/lib/nagios/plugins/check_file_age -w 1800 -c 3600 -W 32 -C 32 /var/log/sekhmet1.ra.nemunai.re/messages.log
command[check_log_age_sekhmet2.ra.nemunai.re]=/usr/lib/nagios/plugins/check_file_age -w 1800 -c 3600 -W 32 -C 32 /var/log/sekhmet2.ra.nemunai.re/messages.log
command[check_log_age_sekhmet3.ra.nemunai.re]=/usr/lib/nagios/plugins/check_file_age -w 1800 -c 3600 -W 32 -C 32 /var/log/sekhmet3.ra.nemunai.re/messages.log
command[check_log_age_sekhmet4.ra.nemunai.re]=/usr/lib/nagios/plugins/check_file_age -w 1800 -c 3600 -W 32 -C 32 /var/log/sekhmet4.ra.nemunai.re/messages.log
command[check_log_age_sekhmet5.ra.nemunai.re]=/usr/lib/nagios/plugins/check_file_age -w 1800 -c 3600 -W 32 -C 32 /var/log/sekhmet5.ra.nemunai.re/messages.log
command[check_log_age_sekhmet6.ra.nemunai.re]=/usr/lib/nagios/plugins/check_file_age -w 1800 -c 3600 -W 32 -C 32 /var/log/sekhmet6.ra.nemunai.re/messages.log
command[check_log_age_ouaset.masr.nemunai.re]=/usr/lib/nagios/plugins/check_file_age -w 1800 -c 3600 -W 32 -C 32 /var/log/ouaset.masr.nemunai.re/messages.log
command[check_log_age_rhakotis.masr.nemunai.re]=/usr/lib/nagios/plugins/check_file_age -w 1800 -c 3600 -W 32 -C 32 /var/log/rhakotis.masr.nemunai.re/messages.log
command[check_log_age_jizah.masr.nemunai.re]=/usr/lib/nagios/plugins/check_file_age -w 1800 -c 3600 -W 32 -C 32 /var/log/jizah.masr.nemunai.re/messages.log
{% endif %}
# 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 ###
#command[check_users]=/usr/lib/nagios/plugins/check_users $ARG1$
#command[check_load]=/usr/lib/nagios/plugins/check_load $ARG1$
#command[check_disk]=/usr/lib/nagios/plugins/check_disk $ARG1$
#command[check_swap]=/usr/lib/nagios/plugins/check_swap $ARG1$
#command[check_cpu_stats]=/usr/lib/nagios/plugins/check_cpu_stats.sh $ARG1$
#command[check_mem]=/usr/lib/nagios/plugins/custom_check_mem -n $ARG1$
### GENERIC SERVICES ###
#command[check_init_service]=sudo /usr/lib/nagios/plugins/check_init_service $ARG1$
#command[check_services]=/usr/lib/nagios/plugins/check_services -p $ARG1$
### SYSTEM UPDATES ###
#command[check_yum]=/usr/lib/nagios/plugins/check_yum
{% if ansible_distribution == 'Debian' %}
command[check_apt]=/usr/lib/nagios/plugins/check_apt
{% endif %}
### PROCESSES ###
#command[check_all_procs]=/usr/lib/nagios/plugins/custom_check_procs
#command[check_procs]=/usr/lib/nagios/plugins/check_procs $ARG1$
### OPEN FILES ###
#command[check_open_files]=/usr/lib/nagios/plugins/check_open_files.pl $ARG1$
### NETWORK CONNECTIONS ###
#command[check_netstat]=/usr/lib/nagios/plugins/check_netstat.pl -p $ARG1$ $ARG2$
### ASTERISK ###
#command[check_asterisk]=/usr/lib/nagios/plugins/check_asterisk.pl $ARG1$
#command[check_sip]=/usr/lib/nagios/plugins/check_sip $ARG1$
#command[check_asterisk_sip_peers]=sudo /usr/lib/nagios/plugins/check_asterisk_sip_peers.sh $ARG1$
#command[check_asterisk_version]=/usr/lib/nagios/plugins/nagisk.pl -c version
#command[check_asterisk_peers]=/usr/lib/nagios/plugins/nagisk.pl -c peers
#command[check_asterisk_channels]=/usr/lib/nagios/plugins/nagisk.pl -c channels
#command[check_asterisk_zaptel]=/usr/lib/nagios/plugins/nagisk.pl -c zaptel
#command[check_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>

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define host {
use linux-server
host_name {{ inventory_hostname_short }}
address {{ inventory_hostname }}
hostgroups linux-servers{% if group_names | length > 0 %},{{ group_names | join(",") }}{% endif %}{% if nagios_extra_groups | length > 0 %},{{ nagios_extra_groups | join(",") }}{% endif %}
{% if mydomain is defined and mydomain != "ra.nemunai.re" -%}
{% set dn = mydomain.split('.') %}
parents {{ dn[0] }}
{%- endif %}
}