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| = Introduction = | | = Introduction = |
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| Article "bloc-note" sur l'installation de Nagios 3.0.6 sur Corni.peaudeau.fr. | | Article "bloc-note" sur la mise en place du monitoring de rps.pedrono.fr |
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| But du Nagios: surveillance des services sur r14493.ovh.net, a.k.a rps.pedrono.fr.
| | = Objectifs = |
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| = Installation =
| | Monitoring de services: |
| | * monitorer le service "ssh" |
| | * monitorer le service "http" |
| | * monitorer le service "ftp" |
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| == Guide d'installation ==
| | 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 |
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| [http://nagios.sourceforge.net/docs/3_0/quickstart-ubuntu.html Installation Nagios 3.x - Ubuntu quickstart]
| | = Configuration = |
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| == Téléchargement de Nagios == | | == Référence documentaire == |
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| jules@corni:/home/jules/$ wget http://switch.dl.sourceforge.net/sourceforge/nagios/nagios-3.0.6.tar.gz
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| jules@corni:/home/jules/$ tar xvzf nagios-3.0.6.tar.gz
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| jules@corni:/home/jules/$ wget http://puzzle.dl.sourceforge.net/sourceforge/nagiosplug/nagios-plugins-1.4.13.tar.gz
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| jules@corni:/home/jules/$ tar xvzf nagios-plugins-1.4.13.tar.gz
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| == Vérification des prérequis ==
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| jules@corni:/home/jules/nagios-3.0.6$ dpkg -l|grep gcc
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| jules@corni:/home/jules/nagios-3.0.6$ dpkg -l|grep build
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| jules@corni:/home/jules/nagios-3.0.6$ sudo apt-get update
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| jules@corni:/home/jules/nagios-3.0.6$ sudo apt-get install build-essential
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| jules@corni:/home/jules/nagios-3.0.6$ sudo apt-cache search gd2
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| jules@corni:/home/jules/nagios-3.0.6$ sudo apt-get install libgd2-xpm-dev
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| == Gestion des droits utilisateurs ==
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| jules@corni:/home/jules/nagios-3.0.6$ sudo useradd -m nagios
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| jules@corni:/home/jules/nagios-3.0.6$ sudo passwd nagios
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| Enter new UNIX password:
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| Retype new UNIX password:
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| passwd: password updated successfully
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| jules@corni:/home/jules/nagios-3.0.6$
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| jules@corni:/home/jules/nagios-3.0.6$ sudo usermod -G nagios nagios
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| jules@corni:/home/jules/nagios-3.0.6$ sudo groupadd nagcmd
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| jules@corni:/home/jules/nagios-3.0.6$ sudo usermod -a -G nagcmd nagios
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| jules@corni:/home/jules/nagios-3.0.6$ sudo usermod -a -G nagcmd www-data
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| == Compilation de Nagios ==
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| jules@corni:/home/jules/nagios-3.0.6$ sudo ./configure --with-command-group=nagcmd
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| ...
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| *** Configuration summary for nagios 3.0.6 12-01-2008 ***:
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| General Options:
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| -------------------------
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| Nagios executable: nagios
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| Nagios user/group: nagios,nagios
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| Command user/group: nagios,nagcmd
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| Embedded Perl: no
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| Event Broker: yes
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| Install ${prefix}: /usr/local/nagios
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| Lock file: ${prefix}/var/nagios.lock
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| Check result directory: ${prefix}/var/spool/checkresults
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| Init directory: /etc/init.d
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| Apache conf.d directory: /etc/apache2/conf.d
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| Mail program: /bin/mail
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| Host OS: linux-gnu
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| Web Interface Options:
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| ------------------------
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| HTML URL: http://localhost/nagios/
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| CGI URL: http://localhost/nagios/cgi-bin/
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| Traceroute (used by WAP):
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| Review the options above for accuracy. If they look okay,
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| type 'make all' to compile the main program and CGIs.
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| jules@corni:/home/jules/nagios-3.0.6$ sudo make all
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| ...
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| jules@corni:/home/jules/nagios-3.0.6$ sudo make install
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| ...
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| jules@corni:/home/jules/nagios-3.0.6$ sudo make install-init
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| ...
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| jules@corni:/home/jules/nagios-3.0.6$ sudo make install-config
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| ...
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| jules@corni:/home/jules/nagios-3.0.6$ sudo make install-commandmode
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| ...
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| == Compilation et installation des nagios-plugins ==
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| jules@corni:/home/jules/nagios-3.0.6$ cd ../nagios-plugins-1.4.13/
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| jules@corni:/home/jules/nagios-plugins-1.4.13$ sudo ./configure --with-nagios-user=nagios --with-nagios-group=nagios
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| ...
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| jules@corni:/home/jules/nagios-plugins-1.4.13$ sudo make
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| ...
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| jules@corni:/home/jules/nagios-plugins-1.4.13$ sudo make install
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| ...
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| | |
| = Configuration de Nagios =
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| == Contacts et ContactGroups ==
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| jules@corni:/home/jules/nagios-3.0.6$ sudo vi /usr/local/nagios/etc/objects/contacts.cfg
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| ...
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| define contact{
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| contact_name nagiosadmin
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| use generic-contact
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| alias Nagios Admin
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| email jules@pedrono.fr
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| }
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| define contact{
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| contact_name denis
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| use generic-contact
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| alias Denis Peaudeau
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| email denispeaudeau@gmail.com
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| }
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| ...
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| define contactgroup{
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| contactgroup_name admins
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| alias Nagios Administrators
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| members nagiosadmin,denis
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| }
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| == Installation configuration Apache ==
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| jules@corni:/home/jules/nagios-3.0.6$ sudo make install-webconf
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| /usr/bin/install -c -m 644 sample-config/httpd.conf /etc/apache2/conf.d/nagios.conf
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| *** Nagios/Apache conf file installed ***
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| jules@corni:/home/jules/nagios-3.0.6$ sudo htpasswd -c /usr/local/nagios/etc/htpasswd.users nagiosadmin
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| New password:
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| Re-type new password:
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| Adding password for user nagiosadmin
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| jules@corni:/home/jules/nagios-3.0.6$ sudo htpasswd /usr/local/nagios/etc/htpasswd.users denis
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| New password:
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| Re-type new password:
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| Adding password for user denis
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| jules@corni:/home/jules/nagios-3.0.6$
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| jules@corni:/home/jules/nagios-3.0.6$ sudo /etc/init.d/apache2 reload
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| * Reloading web server config apache2
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| apache2: Could not reliably determine the server's fully qualified domain name, using 192.168.0.30 for ServerName
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| [ OK ]
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| jules@corni:/home/jules/nagios-3.0.6$
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| == Sécurisation des accès ==
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| '''A FAIRE''' [http://nagios.sourceforge.net/docs/3_0/cgisecurity.html Sécuriser les accès CGI]
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| = Lancement de Nagios =
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| == Création des liens symbolique pour l'init du système ==
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| jules@corni:/home/jules/nagios-plugins-1.4.13$ sudo ln -s /etc/init.d/nagios /etc/rcS.d/S99nagios
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| == Vérification de la configuration de Nagios ==
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| jules@corni:/home/jules/nagios-plugins-1.4.13$ sudo /usr/local/nagios/bin/nagios -v /usr/local/nagios/etc/nagios.cfg
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|
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| Nagios 3.0.6
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| Copyright (c) 1999-2008 Ethan Galstad (http://www.nagios.org)
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| Last Modified: 12-01-2008
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| License: GPL
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|
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| Reading configuration data...
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| Running pre-flight check on configuration data...
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| Checking services...
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| Checked 8 services.
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| Checking hosts...
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| Checked 1 hosts.
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| Checking host groups...
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| Checked 1 host groups.
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| Checking service groups...
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| Checked 0 service groups.
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| Checking contacts...
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| Checked 2 contacts.
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| Checking contact groups...
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| Checked 1 contact groups.
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| Checking service escalations...
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| Checked 0 service escalations.
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| Checking service dependencies...
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| Checked 0 service dependencies.
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| Checking host escalations...
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| Checked 0 host escalations.
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| Checking host dependencies...
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| Checked 0 host dependencies.
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| Checking commands...
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| Checked 24 commands.
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| Checking time periods...
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| Checked 5 time periods.
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| Checking for circular paths between hosts...
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| Checking for circular host and service dependencies...
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| Checking global event handlers...
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| Checking obsessive compulsive processor commands...
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| Checking misc settings...
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|
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| '''Total Warnings: 0'''
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| '''Total Errors: 0'''
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| Things look okay - No serious problems were detected during the pre-flight check
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| jules@corni:/home/jules/nagios-plugins-1.4.13$
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| == Lancement de Nagios ==
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| jules@corni:/home/jules/nagios-plugins-1.4.13$ sudo /etc/init.d/nagios start
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| Starting nagios: done.
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| jules@corni:/home/jules/nagios-plugins-1.4.13$ ps fax
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| ...
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| 10688 ? Ssl 0:00 /usr/local/nagios/bin/nagios -d /usr/local/nagios/etc/nagios.cfg
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| = Accès au service =
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| [http://home.peaudeau.fr/nagios/ Nagios sur Corni]
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| = Configuration des notifications =
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| == Installation de postfix ==
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| jules@corni:/home/jules/nagios-plugins-1.4.13$ sudo apt-get install postfix
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| ...
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| * Postfix configuré comme "Système satellite".
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| * Nom de courrier pour le from: nagios@home.peaudeau.fr
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| * Relay: smtp.free.fr <p><font color="red">'''ATTENTION A LA FREQUENCE ET AUX ETATS DECLENCHEURS DES NOTIFICATIONS'''</font></p>
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| == Installation de mailutils ==
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| jules@corni:/home/jules/nagios-plugins-1.4.13$ sudo apt-get install mailutils
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| ...
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| jules@corni:/home/jules/nagios-plugins-1.4.13$ ma
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| '''mail''' mailx make-memtest86+-boot-floppy make-ssl-cert mandb mawk
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| mailq make make_method man manpath
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| jules@corni:/home/jules/nagios-plugins-1.4.13$ which mail
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| /usr/bin/mail
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| == Modification du fichier de commandes Nagios ==
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| jules@corni:/home/jules/nagios-plugins-1.4.13$ sudo vi /usr/local/nagios/etc/objects/commands.cfg
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| Substitution sed des référence à /bin/mail:
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| :%s/\/bin\/mail/\/usr\/bin\/mail/gc
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| Les nouvelles commandes:
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| # '''notify-host-by-email''' command definition
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| define command{
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| command_name notify-host-by-email
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| command_line /usr/bin/printf "%b" "***** Nagios *****\n\nNotification Type: $NOTIFICATIONTYPE$\nHost: $HOSTNAME$\nState: $HOSTSTATE$\nAddress: $HOSTADDRESS$\nInfo: $HOSTOUTPUT$\n\nDate/Time: $LONGDATETIME$\n" | '''/usr/bin/mail''' -s "** $NOTIFICATIONTYPE$ Host Alert: $HOSTNAME$ is $HOSTSTATE$ **" $CONTACTEMAIL$
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| }
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| # '''notify-service-by-email''' command definition
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| define command{
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| command_name notify-service-by-email
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| command_line /usr/bin/printf "%b" "***** Nagios *****\n\nNotification Type: $NOTIFICATIONTYPE$\n\nService: $SERVICEDESC$\nHost: $HOSTALIAS$\nAddress: $HOSTADDRESS$\nState: $SERVICESTATE$\n\nDate/Time: $LONGDATETIME$\n\nAdditional Info:\n\n$SERVICEOUTPUT$" | '''/usr/bin/mail''' -s "** $NOTIFICATIONTYPE$ Service Alert: $HOSTALIAS$/$SERVICEDESC$ is $SERVICESTATE$ **" $CONTACTEMAIL$
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| }
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| Prise en compte de la configuration:
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| jules@corni:/home/jules/nagios-plugins-1.4.13$ sudo /etc/init.d/nagios restart
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| Running configuration check...done.
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| Stopping nagios: .done.
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| Starting nagios: done.
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| jules@corni:/home/jules/nagios-plugins-1.4.13$
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|
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|
| | [http://nagios.sourceforge.net/docs/3_0/monitoring-linux.html Monitorer des hôtes Linux] |
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| [[Category:Monitoring]] | | [[Category:Monitoring]] |
| [[Category:Securite]] | | [[Category:Securite]] |
| [[Category:Howto]] | | [[Category:Howto]] |
