How to Install Nagios Core Monitoring on AlmaLinux 9

Introduction

Nagios Core is a powerful open-source IT infrastructure monitoring system. This tutorial will guide you through the process of installing Nagios Core Monitoring on AlmaLinux 9.

Prerequisites

Before you begin, ensure you have:

1. An AlmaLinux 9 server
2. Root or sudo access to the server
3. Basic knowledge of Linux command line

Step 1: Update System Packages

First, update the package repository and install necessary updates:

sudo dnf update -y

Step 2: Install Nagios Core

Install Nagios Core and its dependencies:

sudo dnf install -y epel-release
sudo dnf install -y nagios

Step 3: Start Nagios Core Service

Start the Nagios Core service and enable it to start on boot:

sudo systemctl start nagios
sudo systemctl enable nagios

Step 4: Access Nagios Web Interface

Open your web browser and navigate to http://your_server_ip/nagios. You will be prompted to log in with the default credentials (username: nagiosadmin, password: password). After logging in, you can begin configuring and monitoring your infrastructure.

Conclusion

Congratulations! You have successfully installed Nagios Core Monitoring on AlmaLinux 9. You can now monitor your IT infrastructure for issues and performance metrics.

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