This course provides a comprehensive introduction to Nagios, a powerful open-source monitoring tool used to oversee systems, networks, and applications. You will start by learning what Nagios is, including its history, evolution, key features, and benefits, along with a comparison to other monitoring tools.

The course will guide you through the installation of Nagios on various operating systems such as Windows, macOS, and Linux, as well as the configuration of server settings, user management, and permissions. You will learn how to create and manage services by defining check commands, thresholds, and configuring notifications and escalation policies using Nagios plugins.

Additionally, you will explore how to manage hosts by adding them for monitoring, assigning services, and utilizing host templates. You’ll also configure notification methods (like email and SMS), create escalation policies, and manage notification contacts.

The course will cover generating and customizing reports and graphs, analyzing performance data, and delve into advanced topics, including Nagios XI (the commercial version), Nagios Log Center, and Nagios Fusion. You’ll learn how to integrate Nagios with other tools such as SNMP and WMI.

Practical examples and case studies will allow you to monitor network devices (routers and switches), servers (CPU, memory, disk usage), and applications (web servers and databases). By the end of the course, you will gain hands-on experience in creating custom plugins and effectively using Nagios to monitor your IT infrastructure, ensuring optimal performance and availability.

What You’ll Learn

In this course, you will gain a comprehensive understanding of Nagios, including its overview, history, key features, and benefits. You will learn how to install Nagios on various operating systems such as Windows, macOS, and Linux, along with configuring user management and permissions. The course will cover creating and managing services, defining check commands, and setting up notifications and escalation policies. You’ll also explore how to utilize and customize Nagios plugins for enhanced monitoring capabilities. Additionally, you will learn to add hosts for monitoring and assign services to those hosts effectively. Notification methods and escalation policies will be configured to ensure timely alerts, and you will generate and analyze reports and graphs to track system performance. Advanced topics such as Nagios XI, Nagios Log Center, and Nagios Fusion will be explored, alongside integrations with other tools. Finally, practical applications will allow you to monitor network devices, servers, and applications, as well as create custom plugins for specialized monitoring needs.