Icinga

Icinga is an open source host, service and network monitoring program. It monitors specified hosts and services, alerting you to any developing issues, errors or improvements. This article describes the installation and configuration of Icinga.

Installation

Follow Install Web Application Package

Install icinga^AUR from the AUR.

Users may also want to install nagios-plugins^AUR.

Icinga Configuration

Copy the sample config files as root:

 # cd /etc/icinga
 # cp cgi.cfg.sample cgi.cfg
 # cp resource.cfg.sample resource.cfg
 # cp icinga.cfg.sample icinga.cfg
 # cp objects/commands.cfg.sample objects/commands.cfg
 # cp objects/contacts.cfg.sample objects/contacts.cfg
 # cp objects/localhost.cfg.sample objects/localhost.cfg
 # cp objects/templates.cfg.sample objects/templates.cfg
 # cp objects/timeperiods.cfg.sample objects/timeperiods.cfg

Edit /etc/icinga/resource.cfg

 $USER1$=/usr/share/nagios/libexec

Webserver Configuration

Create htpasswd.users file with a username and password.

 # htpasswd -c /etc/icinga/htpasswd.users icingaadmin

If you define another user foo, you need grant access permission to that user. Edit /etc/icinga/cgi.cfg

 authorized_for_system_information=icingaadmin,foo
 authorized_...
 ...

Additional Nginx Configuration

Configure Authentication

 location /icinga/ {
   auth_basic              "Restricted";
   auth_basic_user_file    /etc/icinga/htpasswd.users;
 }

Configure CGI

   location ~ \.cgi$ {
     fastcgi_pass    unix:/var/run/fcgiwrap.sock;
     include        fastcgi.conf;
     fastcgi_param  AUTH_USER          $remote_user;
     fastcgi_param  REMOTE_USER        $remote_user;
   }

Icinga-web

> Follow Install Web Application Package

Install icinga-web^AUR from the AUR.

Configure IDOUtils

 # cd /etc/icinga
 # mv idomod.cfg-sample idomod.cfg
 # mv ido2db.cfg-sample ido2db.cfg
 
 ! Database Setup
 
 (Mysql)
 $ mysql -u root -p
 > CREATE USER 'icinga' IDENTIFIED BY 'icinga';
 > CREATE DATABASE icinga;
 > GRANT USAGE ON icinga.* TO 'icinga'@'localhost' WITH MAX_QUERIES_PER_HOUR 0 MAX_CONNECTIONS_PER_HOUR 0 MAX_UPDATES_PER_HOUR 0;
 > GRANT SELECT , INSERT , UPDATE , DELETE, DROP, CREATE VIEW, INDEX
  ON icinga.* TO 'icinga'@'localhost';
 > FLUSH PRIVILEGES;
 > quit
 
 $ mysql -u root -p icinga < /usr/share/icinga/idoutils/db/mysql/mysql.sql

Configure WebServer

Example config files are located at

 /etc/icinga-web/apache.example.conf
 /etc/icinga-web/nginx.example.conf

Configure PHP

Edit /etc/php.ini

 open_basedir = ...:/usr/share/icinga-web:/var/cache/icinga-web:/var/log/icinga
 extension=pdo_mysql.so
 extension=xsl.so
 extension=sockets.so

Confiure Database

Mysql

 ! Create database and grants.
 # mysql -u root -p
 > CREATE USER 'icinga_web' IDENTIFIED BY 'icinga_web';
 > CREATE DATABASE icinga_web;
 > GRANT USAGE ON icinga_web.* TO 'icinga_web'@'localhost' WITH MAX_QUERIES_PER_HOUR 0 MAX_CONNECTIONS_PER_HOUR 0 MAX_UPDATES_PER_HOUR 0;
 > GRANT SELECT, INSERT, UPDATE, DELETE, CREATE, DROP, ALTER, INDEX ON icinga_web.* TO 'icinga_web'@'localhost';
 > quit
  
 ! Import the schema.
 # mysql -u root -p icinga_web < /usr/share/icinga-web/etc/schema/mysql.sql

Finally

 ! Start IDOUtils
 # systemctl start ido2db
   
 ! Start Icinga
 # systemctl start icinga
   
 ! Start Mysql
 # systemctl start mysqld
   
 ! Start Web Server
 # systemctl start httpd or nginx
   
 ! goto http://localhost/icinga-web
 > login with 'root' and 'password'

Upgrade database

A new version usually requires an upgrade of the database. You find the sql upgrade scripts in

 /usr/share/icinga/idoutils/db/mysql/upgrade
 /usr/share/icinga-web/etc/schema/updates/mysql

Commands to upgrade with these scripts are

 # mysql -u root -p icinga < ./mysql-upgrade-1.8.0.sql 
 # mysql -u root -p icinga_web < ./mysql_v1-7-2_to_v1-8-0.sql
 # systemctl --system daemon-reload
 # systemctl restart icinga

See also

• icinga.org Official website
• Nagios Plugins the home of the official plugins
• wikipedia.org Wikipedia article
• NagiosExchange overview of plugins, addons, mailing lists for Icinga