How to install Nagios on Sabayon /Gentoo

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Nagios is a popular open source computer system and network monitoring software application. It watches hosts and services, alerting users when things go nagios-logowrong and again when they get better.

 Nagios was originally designed to run under Linux, but also runs well on other Unix variants. It is free software, licensed under the terms of the GNU General Public License version 2 as published by the Free Software Foundation.

Before to start, if you want to install Nagios in other linux distros, please check our previous posts.

 To install and configure nagios in Sabayon/Gentoo please follow the steps as described bellow:

1- INSTALL  NAGIOS

You can install Nagios in Sabayon using the following command:

emerge nagios nagios-plugins  net-snmp

 

2- Make .htaccess and Place this file inside the /usr/share/nagios/htdocs and /usr/lib/nagios/cgi-bin directories.

AuthName "Nagios Access"
AuthType Basic
AuthUserFile /etc/nagios/auth.users
Require valid-user

 

3- Creating the nagiosadmin user:

Use the following command to create the nagios admin user:

htpasswd2 -c /etc/nagios/auth.users nagiosadmin

4-Add nagios to  apache  group

usermod -a -G   nagios  apache
chown nagios:nagios /etc/nagios/auth.users
chown nagios:nagios  /usr/share/nagios

 

5- Add Nagios Alias for  Apache: (/etc/apache2/modules.d)

 sabayon6 modules.d # vi 99_nagios3.conf

 Add this lines :

<IfDefine NAGIOS>
         ScriptAlias /nagios/cgi-bin/ /usr/lib/nagios/cgi-bin/
         <Directory "/usr/lib/nagios/cgi-bin/">
                AllowOverride AuthConfig
                Options ExecCGI
                Order allow,deny
                Allow from all
        </Directory>
        Alias /nagios /usr/share/nagios/htdocs
        <Directory "/usr/share/nagios/htdocs">
                AllowOverride AuthConfig
                Order allow,deny
                Allow from all
        </Directory>
</IfDefine>

6- Start Nagios and apache

# /etc/init.d/nagios start # /etc/init.d/apache2 start

Open the Browser http://ip/nagios or http://hostname/nagios and lopinf with your nagios admin created




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