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Supervision de réseau informatique - Nagios
Supervision de réseau informatique - Nagios
Supervision de réseau informatique - Nagios
Supervision de réseau informatique - Nagios
Supervision de réseau informatique - Nagios
Supervision de réseau informatique - Nagios
Supervision de réseau informatique - Nagios
Supervision de réseau informatique - Nagios
Supervision de réseau informatique - Nagios
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Supervision de réseau informatique - Nagios

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L’installation de Nagios 3.5.0


Pré-requis
Avant de commencer l’installation de Nagios, on commence par mettre à jour le système:
# sudo apt-get update
# sudo apt-get upgrade
Il faut dans un premier temps installer le package « build-essential » qui comporte les librairies de développement de bases:
# sudo apt-get install build-essential
Nagios utilise une interface Web pour interagir avec les utilisateurs. Il faut donc installer un serveur Web sur notre serveur de supervision.
On va utiliser Apache (version 2):
# sudo apt-get install apache2 wget rrdtool bsd-mailx librrds-perl libapache2-mod-php5 php5 php-pear php5-gd php5-ldap php5-snmp libperl-dev
Certaine librairie sont également nécessaires au bon fonctionnement de Nagios et de ces plugins :
# sudo apt-get install bind9-host dnsutils libbind9-80 libdns81 libisc83 libisccc80 libisccfg82 liblwres80 libradius1 qstat radiusclient1 snmp snmpd
Pour tester votre serveur Web, il faut commencer par le lancer…
# sudo apache2ctl start
On test si apache fonctionne, pour cela, ouvrez votre navigateur Internet et entrez votre adresse IP. Dans mon cas c’est 10.0.0.15.

On installe les librairies qui serviront à Nagios pour afficher de beaux diagrammes réseau:
# sudo apt-get install libgd2-noxpm-dev libpng12-dev libjpeg62 libjpeg62-dev
On installe MySQL .
# sudo apt-get install mysql-server
# sudo apt-get install php5-mysql
# sudo apt-get install libmysqlclient15-dev
Pour des raisons de sécurité, le processus Nagios ne sera pas lancé en root. Nous allons donc créer un utilisateur système nagios et un groupe nagios.
# sudo /usr/sbin/useradd nagios
# sudo passwd nagios
# sudo /usr/sbin/groupadd nagios
# sudo /usr/sbin/usermod -G nagios nagios
# sudo /usr/sbin/usermod -G nagios www-data
Téléchargement de Nagios et des plugins Nagios
Avant d’installer Nagios, allez sur le site afin de télécharger la dernière version de Nagios et la dernière version des plugins Nagios.
Dans notre documentation, nous utiliserons Nagios 3.5.0 et plugins Nagios 1.4.16.
Ensuite, on télécharge ces versions sur notre serveur
# sudo cd /usr/src
# sudo wget http://surfnet.dl.sourceforge.net/sourceforge/nagios/nagios-3.5.0.tar.gz
# sudo wget http://kent.dl.sourceforge.net/sourceforge/nagiosplug/nagios-plugins-1.4.16.tar.gz
Compilation depuis les sources
On commence par décompresser les sources:
# sudo tar xzf nagios-3.5.0.tar.gz
# sudo cd nagios
Nous allons lancer la compilation grâce aux commandes suivantes:
# sudo ./configure --with-nagios-user=nagios --with-nagios-group=nagios --with-command-user=nagios --with-command-group=nagios --enable-event-broker --enable-nanosleep --enable-embedded-perl --with-perlcache
# sudo make all
# sudo make fullinstall
# sudo make install-config
On installe ensuite le script de démarrage (pour que Nagios se lance automatique)

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