Nagios is a powerful, open-source monitoring system that helps you identify and resolve IT infrastructure problems before they affect critical business processes. In this tutorial, we’ll guide you through how to install and configure Nagios on Arch Linux. By the end of this tutorial, you’ll have a fully functional Nagios server up and running on your Arch Linux machine.
Before we begin, make sure you have:
- An Arch Linux system up-to-date and running with root privileges.
- A working knowledge of Arch Linux and basic command-line skills.
- A web server installed (we’ll use Apache for this tutorial).
How to Install and Configure Nagios on Arch Linux
Install Required Dependencies on Arch Linux
First, we need to install the required dependencies for Nagios. Run the following commands to update your Arch Linux system and install the necessary packages:
sudo pacman -Syu sudo pacman -S gcc make apache php php-cgi
Now that you have the required dependencies installed, let’s proceed with the installation of Nagios.
Download and Compile Nagios on Arch Linux
Download the latest version of Nagios from the official website using the
wget command. If you haven’t installed
wget yet, check out our tutorial on how to install wget on Arch Linux.
wget https://assets.nagios.com/downloads/nagioscore/releases/nagios-x.x.x.tar.gz tar xvf nagios-x.x.x.tar.gz cd nagios-x.x.x/
x.x.x with the version number you downloaded.
Now, compile Nagios using the following commands:
./configure --with-command-group=nagcmd make all
Create Nagios User and Group on Arch Linux
Next, create a new user and group for Nagios:
sudo useradd -m -s /bin/bash nagios sudo groupadd nagcmd sudo usermod -a -G nagcmd nagios sudo usermod -a -G nagcmd apache
Install Nagios on Arch Linux and Configure Permissions
Install Nagios and set the appropriate permissions:
sudo make install sudo make install-commandmode sudo make install-init sudo make install-config
Configure Apache for Nagios
To access the Nagios web interface, you’ll need to configure Apache. First, create a new Apache configuration file for Nagios:
sudo nano /etc/httpd/conf/extra/nagios.conf
Add the following content to the newly created 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 exit the file. Now, include the Nagios configuration in the main Apache configuration file:
sudo nano /etc/httpd/conf/httpd.conf
Add the following line at the end of the file:
Save and exit the file. Now, restart Apache to apply the changes:
sudo systemctl restart httpd
Create Nagios Web Interface User
Create a user account for accessing the Nagios web interface:
sudo htpasswd -c /usr/local/nagios/etc/htpasswd.users nagiosadmin
You’ll be prompted to enter a password for the
Install Nagios Plugins on Arch Linux
To monitor various services and hosts, you’ll need to install the Nagios plugins. Download the latest version of the Nagios plugins from the official website using the
wget https://nagios-plugins.org/download/nagios-plugins-x.x.tar.gz tar xvf nagios-plugins-x.x.tar.gz cd nagios-plugins-x.x/
x.x with the version number you downloaded.
Compile and install the Nagios plugins:
./configure --with-nagios-user=nagios --with-nagios-group=nagios make sudo make install
Start Nagios and Enable it at Boot
Start the Nagios service and enable it to run at system boot:
sudo systemctl start nagios sudo systemctl enable nagios
Access Nagios Web Interface
Finally, you can access the Nagios web interface by navigating to the following URL in your web browser:
Log in using the
nagiosadmin user and the password you created earlier.
Congratulations! You’ve successfully installed and configured Nagios on your Arch Linux system. You can now monitor your IT infrastructure using the powerful features provided by Nagios.