Installing Nagios on Void Linux

Nagios is a powerful open-source monitoring system that allows you to keep an eye on your network, servers, and applications. In this tutorial, we will be walking through how to install Nagios on Void Linux.

Prerequisites

• A machine running Void Linux
• Root access or sudo privileges

Step 1: Install Dependencies

First, we need to install the dependencies required for Nagios to run. Open a terminal and run the following command:

sudo xbps-install -S apache php php-fpm gd openssl gd-devel httpd-devel make gcc glibc-static

This command will install the packages needed to run Nagios.

Step 2: Download Nagios

Next, we need to download the Nagios source code from the official website. You can download it by running the following command:

wget https://github.com/NagiosEnterprises/nagioscore/archive/nagios-4.4.6.tar.gz

This command will download the Nagios source code to your current directory.

Step 3: Install Nagios

Once the download is complete, we need to extract the source code and compile it. Run the following commands:

tar xf nagios-4.4.6.tar.gz
cd nagioscore-nagios-4.4.6/
./configure --with-command-group=nagcmd
sudo make all
sudo make install
sudo make install-commandmode
sudo make install-init
sudo make install-config

This command will install Nagios with its default settings.

Step 4: Configure Nagios Web Interface

Now, we need to configure the Nagios user account and the Apache web server.

Configure Nagios User Account

Run the following command to create a Nagios user and group:

sudo useradd nagios
sudo groupadd nagcmd
sudo usermod -a -G nagcmd nagios

Configure Apache

Next, we need to configure the Apache web server. Run the following command to create a new Apache configuration file for Nagios:

sudo touch /etc/httpd/conf.d/nagios.conf
sudo nano /etc/httpd/conf.d/nagios.conf

Add the following lines to the configuration file:

ScriptAlias /nagios/cgi-bin "/usr/local/nagios/sbin"
<Directory "/usr/local/nagios/sbin">
   Options ExecCGI
   AllowOverride None
   Order allow,deny
   Allow from all
   AuthName "Nagios Access"
   AuthType Basic
   AuthUserFile /usr/local/nagios/etc/htpasswd.users
   Require valid-user
</Directory>

Alias /nagios "/usr/local/nagios/share"
<Directory "/usr/local/nagios/share">
   Options None
   AllowOverride None
   Order allow,deny
   Allow from all
   AuthName "Nagios Access"
   AuthType Basic
   AuthUserFile /usr/local/nagios/etc/htpasswd.users
   Require valid-user
</Directory>

Save and close the file.

Next, we need to create an Apache password file for Nagios users. Run the following command:

sudo htpasswd -c /usr/local/nagios/etc/htpasswd.users nagiosadmin

This command will create a new password file and add a Nagios administrator account.

Finally, we need to restart the Apache web server to apply the changes. Run the following command:

sudo service httpd restart

Step 5: Access Nagios Web Interface

After configuring Apache, you can access the Nagios web interface at http://<Server-IP-Address>/nagios/. Log in using the Nagios administrator account you created earlier.

Conclusion

That's it! You have successfully installed Nagios on Void Linux and configured the Nagios web interface. You are now ready to start monitoring your network, servers, and applications.

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