Nagios is a powerful monitoring system that enables organizations to identify and resolve IT infrastructure problems before they affect critical business processes. In this guide, we will walk you through the steps to install and configure Nagios on CentOS 8.

Step 1: Update Your System

Start by ensuring your system is up to date:

sudo dnf update -y

Step 2: Install Required Packages

Install the required packages for Nagios:

sudo dnf install -y httpd php gcc glibc glibc-common wget unzip

Step 3: Create a Nagios User and Group

Create a new user and group for Nagios:

sudo useradd nagios
sudo useradd -r nagios -s /bin/false

Step 4: Download and Install Nagios

Download the latest version of Nagios:

wget https://github.com/NagiosEnterprises/nagioscore/archive/refs/tags/4.4.6.zip
unzip 4.4.6.zip
cd nagioscore-4.4.6
sudo ./configure --with-command-group=nagcmd

Compile and install:

make all
sudo make install

Step 5: Install Nagios Plugins

Download and install Nagios plugins:

wget https://github.com/nagios-plugins/nagios-plugins/archive/refs/tags/release-2.3.3.zip
unzip release-2.3.3.zip
cd nagios-plugins-release-2.3.3
./configure
make
sudo make install

Step 6: Configure the Web Interface

Install the Nagios web interface:

sudo make install-webconf

Set up the Apache web server to start Nagios:

sudo systemctl restart httpd.service
sudo systemctl enable httpd.service

Step 7: Start Nagios

Start the Nagios service and enable it to start at boot:

sudo systemctl start nagios
sudo systemctl enable nagios

Step 8: Access Nagios Web Interface

Open your web browser and navigate to:

http://your_server_ip/nagios

Log in using the username nagiosadmin and the password you set during installation.

Conclusion

You have successfully installed and configured Nagios on CentOS 8. This powerful monitoring tool will help you keep track of your IT infrastructure.

If you're looking for a reliable hosting solution for your Nagios applications, consider using Windows VPS UK. With Windows VPS, you can efficiently host your applications and ensure high performance. Whether you need VPS UK Windows or Windows Virtual Private Servers, you'll find a solution that fits your requirements.

For larger deployments or enterprise needs, explore Windows Virtual Dedicated Server Hosting or Virtual Private Server Hosting Windows. Whether you're located in the UK, Italy, or elsewhere, Windows VPS Italy and UK VPS Windows offer reliable hosting options. Visit Windows VPS Hosting UK to discover the best hosting solutions for your needs.