Initial commit

2023-03-25 16:31:54 +01:00 · 2023-03-25 16:31:54 +01:00 · c0dec80308
commit c0dec80308
6 changed files with 489 additions and 0 deletions
--- a/defaults/main.yml
+++ b/defaults/main.yml
@ -0,0 +1,2 @@
+---
+nagios_extra_groups: []
--- a/handlers/main.yml
+++ b/handlers/main.yml
@ -0,0 +1,17 @@
+---
+- 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'] }}"
--- a/meta/main.yml
+++ b/meta/main.yml
@ -0,0 +1,18 @@
+---
+
+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: []
--- a/tasks/main.yml
+++ b/tasks/main.yml
@ -0,0 +1,56 @@
+---
+- 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
--- a/templates/nrpe.cfg.j2
+++ b/templates/nrpe.cfg.j2
@ -0,0 +1,384 @@
+#############################################################################
+#
+#  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>
--- a/templates/server.cfg.j2
+++ b/templates/server.cfg.j2
@ -0,0 +1,12 @@
+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 %}
+
+}