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====== ICINGA 1.8 Installation ======


Due to the fact that some repositories do not have recent version of Icinga, it becomes very important to install from without using the repositories {{http://10.12.112.4/dokuwiki/lib/plugins/fckg/fckeditor/editor/images/smiley/msn/regular_smile.gif?nolink&}}


If you are planning to install from source then please use the official release tarball.


This guide is intended to provide you with simple instructions on how to install Icinga from source (code) and have it  monitoring your local machine within 20 minutes. {{http://10.12.112.4/dokuwiki/lib/plugins/fckg/fckeditor/editor/images/smiley/msn/thumbs_up.gif?nolink&}}No advanced installation options are discussed here - just the basics that will work for most of the users who want to get started.


===== What You'll End Up With =====


Icinga and the plugins will be installed underneath **/usr/local/icinga** Icinga will be configured to monitor a few aspects of your local system (CPU load, disk usage, etc.)


The Icinga classic web interface will be accessible at ''[[http://localhost/icinga/|http://localhost/icinga/]]'' or   ''[[http://yourdomain.com/icinga|http://yourdomain.com/icinga]]''


===== Prerequisites =====


During portions of the installation you'll need to have root access to your machine.


Make sure you've installed the following packages on your system before continuing. [[http://www.apache.org/|Apache]]


    * Apache
    * Mysql server
    * SNMP


At one time or another you may need to use SNMP-based checks so  it is a good idea to install the required packages now. Otherwise     some plugins are not compiled i.e. not available when you need them  and it would require a recompile of the plugins.


===== Install packages =====


You can install these packages by running the following commands (as root or using ''sudo'').


<code>
#> apt-get install apache2 mysql-server build-essential libgd2-xpm-dev
#> apt-get install libjpeg62 libjpeg62-dev libpng12 libpng12-dev
#> apt-get install snmp snmpd snmp-mibs-downloader libsnmp5-dev
</code>


===== Create Account Information =====


Become the root user.


<code>
  $> su -l
</code>


OR


<code>
 $ sudo -i
</code>


Create a new  //icinga//     user account and give it a password:


<code>
#> /usr/sbin/useradd -m icinga
#> passwd icinga
</code>


On some distributions you'll need to add the group in a single step:


<code>
#> /usr/sbin/groupadd icinga
</code>


For sending commands from the classic web interface to Icinga, you'll need to create a new group icinga-cmd. Add the  webuser and the Icinga user to this group:


<code>
#> /usr/sbin/groupadd icinga-cmd

#> /usr/sbin/usermod -a -G icinga-cmd icinga

#> /usr/sbin/usermod -a -G icinga-cmd www-data
</code>


===== Download Icinga and the Plugins =====


Change to your local source directory i.e. /usr/src


<code>
#> cd /usr/src
</code>


Get the current source from the [[http://www.icinga.org/|Icinga Website]].


Don't forget to download the [[http://www.nagiosplugins.org/|Nagios Plugins]].


===== Compile and install Icinga =====


Extract the Icinga source code tarball (or change directory to the GIT snapshot)


<code>
#> cd /usr/src/
#> tar xvzf icinga-1.8.tar.gz
#> cd icinga-1.8
</code>


Run the Icinga configure script. You will get help by using the –help flag.


<code>
#> ./configure –with-command-group=icinga-cmd
</code>


Compile the Icinga source code. To see available options, only use "make".


<code>
#> make all
</code>


Install binaries, init script, sample config files, some eventhandlers, and set permissions on the external command directory.


<code>
#> make install
#> make install-init
#> make install-config
#> make install-eventhandlers
#> make install-commandmode
</code>


Don't start Icinga yet - there's still more that needs to be done…


===== Customize Configuration =====


Sample configuration files have been installed by using


<code>
#> make install-config
</code>


into  /usr/local/icinga/etc/. You'll need to make just one change before you proceed…     \\ Edit the  ///usr/local/icinga/etc/objects/contacts.cfg//    config file with your favourite editor and change the     email address associated with the  //icingaadmin//    contact definition to the address you'd like to use for receiving     alerts.


<code>
#> vi /usr/local/icinga/etc/objects/contacts.cfg
</code>


===== Configure the Classic Web Interface =====


 \\ Icinga ships with the Classic Web Interface ("the CGIs") which can be installed via


<code>
#> make cgis #> make install-cgis #> make install-html
</code>


If you are interested in the new Icinga Web, please refer to [[http://10.12.1.150/icinga/docs/en/icinga-web-scratch.html|Install Icinga Web Interface]].    \\
Install the Icinga Classic web config file in the Apache conf.d directory.


<code>
#> make install-webconf
</code>


Create an  //icingaadmin//    account for logging into the Icinga classic web interface. If you want to change it     later, use the same command. Remember the password you assign to this account - you'll need it later.


<code>
#> htpasswd -c /usr/local/icinga/etc/htpasswd.users icingaadmin
</code>


If you want to change it later or want to add another user, use the following command:


<code>
#> htpasswd /usr/local/icinga/etc/htpasswd.users <USERNAME>
</code>


Reload/Restart Apache to make the new settings take effect.<nowiki>


<code>
#> service httpd restart
</code>


OR


<code>
#> /etc/init.d/apache2 reload
</code>


Compile and Install the Nagios Plugins


Extract the Nagios plugins source code tarball.


<code>
#> cd /usr/src
#> tar xvzf nagios-plugins-1.4.16.tar.gz
#> cd nagios-plugins-1.4.16
</code>


Compile and install the plugins by changing install directory to /usr/local/icinga


<code>
#> ./configure - -prefix=/usr/local/icinga –with-cgiurl=/icinga/cgi-bin –with-htmurl=/
icinga- -with-nagios-user=icinga –with-nagios-group=icinga

#> make
#> make install
</code>


===== Start Icinga =====


Add Icinga to the list of system services and have it automatically start when the system boots (make sure you have     installed the init script before).


<code>
#> chkconfig –add icinga
#> chkconfig icinga on
#> update-rc.d icinga defaults
</code>


Verify the sample Icinga configuration files.


<code>
#> /usr/local/icinga/bin/icinga -v /usr/local/icinga/etc/icinga.cfg
</code>


Instead of specifying the paths to binary and config file you can issue


<code>
#> /etc/init.d/icinga show-errors
</code>


which   results in an OK message if everything is fine or several lines which show the location of the error(s).


If there are no errors, start Icinga.


<code>
#> service icinga start
</code>


OR


<code>
#> /etc/init.d/icinga start
</code>


===== Login to the Classic Web Interface =====


You should now be able to access the Icinga classic web interface at the URL below. You'll be prompted for the username (   //icingaadmin//    ) and password you specified earlier.     [[http://localhost/icinga/|http://localhost/icinga/]] or ''  [[http://yourdomain.com/icinga/|http://yourdomain.com/icinga/]] Click on the "Service Detail" navbar link to see details of what's being monitored on your local machine. It will take a few     minutes for Icinga to check all the services associated with your machine.


===== Other Modifications =====


Make sure your system's firewall rules are configured to allow access to the web server if you want to access the Icinga     classic interface remotely.


<code>
 #> iptables -A INPUT -p tcp -m tcp –dport 80 -j ACCEPT
</code>


Setting up your mail transfer agent (MTA) like exim, sendmail or postfix to allow Icinga sending notification emails won't     be explained here.


Please refer to the [[http://www.nagioswiki.org/|Nagios-Wiki]] for more resources.


===== You're Done =====


Congratulations! You successfully installed Icinga. Your journey into monitoring has just begun.
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