MONITORING - Configuration du monitoring RPS

Introduction

Article "bloc-note" sur la mise en place du monitoring de rps.pedrono.fr

Objectifs

Monitoring de services:

• monitorer le service "ssh"
• monitorer le service "http"
• monitorer le service "ftp"

Monitoring NRPE:

• monitorer la queue de mail (détection d'utilisation frauduleuse du smtp)
• monitorer le remplissage de /
• monitorer le remplissage de /home (sites web)
• monitorer les utilisateurs connectés
• monitorer la charge système
• monitorer le serveur SQL, inaccessible de l'extérieur

Configuration

Référence documentaire

Monitorer des hôtes Linux

Monitorer le RPS

Sur Corni, édition de /usr/local/nagios/etc/nagios.cfg:

...
# Definitions for monitoring the RPS server
cfg_file=/usr/local/nagios/etc/objects/rps.cfg
...

Sur Corni, création d'un fichier de config pour serveur Linux:

jules@corni:/usr/local/nagios/etc$ sudo cp objects/localhost.cfg objects/rps.cfg

Adaptation de la configuration, déclaration du serveur, édition de /usr/local/nagios/etc/objects/rps.cfg:

define host{
        use                     linux-server
        host_name               rps
        alias                   rps.pedrono.fr
        address                 87.98.167.215
        }

define hostgroup{
        hostgroup_name  serveur_prod
        alias           Serveurs de production 
        members         rps
        }

Adaptation de la configuration, déclaration des services, édition de /usr/local/nagios/etc/objects/rps.cfg:

define service{
        use                             generic-service
        host_name                       rps
        service_description             PING
        check_command                   check_ping!100.0,20%!500.0,60%
        }

define service{
        use                             generic-service
        host_name                       rps
        service_description             Check du slash
        check_command                   check_nrpe!check_slash
        }

define service{
        use                             generic-service
        host_name                       rps
        service_description             Check du home
        check_command                   check_nrpe!check_home
        }

define service{
        use                             generic-service
        host_name                       rps
        service_description             Utilisateurs Connectés
        check_command                   check_nrpe!check_users
        }

define service{
        use                             generic-service
        host_name                       rps
        service_description             Nombre de processus
        check_command                   check_nrpe!check_total_procs
        }

define service{
        use                             generic-service
        host_name                       rps
        service_description             Charge systeme
        check_command                   check_nrpe!check_load
        }

define service{
        use                             generic-service
        host_name                       rps
        service_description             Postfix queue
        check_command                   check_nrpe!check_mailq
        }

define service{
        use                             generic-service
        host_name                       rps
        service_description             SSH
        check_command                   check_ssh
        }

define service{
        use                             generic-service
        host_name                       rps
        service_description             HTTP
        check_command                   check_http
        }

define service{
        use                             generic-service
        host_name                       rps
        service_description             FTP
        check_command                   check_ftp
        }

Définition de la commande "check_nrpe", édition de /usr/local/nagios/etc/objects/commands.cfg:

# 'check_nrpe' command definition
define command{
        command_name    check_nrpe
        command_line    $USER1$/check_nrpe -H $HOSTADDRESS$ -c $ARG1$ 
        }

Vérification de la validité de la configuration:

jules@corni:/usr/local/nagios/etc$ sudo /usr/local/nagios/bin/nagios -v /usr/local/nagios/etc/nagios.cfg 

Nagios 3.0.6
Copyright (c) 1999-2008 Ethan Galstad (http://www.nagios.org)
Last Modified: 12-01-2008
License: GPL

Reading configuration data...

Running pre-flight check on configuration data...

Checking services...
	Checked 18 services.
Checking hosts...
	Checked 2 hosts.
Checking host groups...
	Checked 2 host groups.
Checking service groups...
	Checked 0 service groups.
Checking contacts...
	Checked 2 contacts.
Checking contact groups...
	Checked 1 contact groups.
Checking service escalations...
	Checked 0 service escalations.
Checking service dependencies...
	Checked 0 service dependencies.
Checking host escalations...
	Checked 0 host escalations.
Checking host dependencies...
	Checked 0 host dependencies.
Checking commands...
	Checked 25 commands.
Checking time periods...
	Checked 5 time periods.
Checking for circular paths between hosts...
Checking for circular host and service dependencies...
Checking global event handlers...
Checking obsessive compulsive processor commands...
Checking misc settings...

Total Warnings: 0
Total Errors:   0 OK

Things look okay - No serious problems were detected during the pre-flight check
jules@corni:/usr/local/nagios/etc$ 

Prise en compte de la configuration:

jules@corni:/usr/local/nagios/etc$ sudo /etc/init.d/nagios reload