Installation

System Requirements

Make sure the server you install Nagios Fusion on meets the requirements below.

Server OS:

See Nagios Software / Operating System (OS) compatibility matrix.

Minimum system specs:

• 4Processor Cores
• 4 GB RAM
• 60 GB HD

Recommended system specs:

• 8+ Processor Cores
• 8+ GB RAM
• 100+ GB HD

Ports and Protocols

While there are a set of basic default ports for Nagios Fusion, Fusion is highly configurable, and an administrator may use non-default ports should they so choose.

Ports	Explanation
http/s: 80, 443	Nagios Fusion's interface is web-based. As is the communication channel between Fusion and the remote hosts.
ssh: 22	Nagios Fusion is built to run natively on RHEL, CentOS, Oracle, Debian, and Ubuntu linux. While nearly all administration can be done through the web interface, administrators may from time to time wish to log in.

Additional details on the basic architecture of Nagios Fusion and how it communicates with Nagios XI, Nagios Core, Nagios Log Server, and Nagios Network Analyzer servers can be found here:

Nagios Fusion Architectural Overview

Installation Options

There are several options available for installing Nagios Fusion:

1. Use the readymade Nagios Fusion VMware or HyperV virtual machines. This is the fastest way to get up and running with Nagios Fusion.
2. Install Nagios Fusion manually. Use this option if you wish to install Nagios Fusion on a physical server (e.g. for performance reasons) or a virtual server running a supported Linux distro.

Installing Nagios Fusion with VMware Workstation Pro

Installing Nagios Fusion with VMWare Workstation

Installing Nagios Fusion with VMware ESXi/vSphere

Installing Nagios Fusion with VMWare ESXi/vSphere

Installing Nagios Fusion with Microsoft HyperV

Document: Installing Nagios Fusion with Hyper-V

Converting the OVA for VirtualBox

Converting the Nagios Fusion OVA for Use in VirtualBox

Manual Installation Instructions

Nagios Fusion Manual Installation Instructions - 2026R2

Nagios Fusion Manual Installation Instructions - 2026R1 (Final)

Licensing and Activating Nagios Fusion

Licensing and Activating Nagios Fusion 2026R2

Licensing and Activating Nagios Fusion 2024 & 2026R1

Getting Started

Getting Started with Nagios Fusion 2026R2

Getting Started with Nagios Fusion 2026R1

Upgrading

Nagios Fusion Upgrade Instructions - 2024/2026R1 (Final)

Migrating to 2026R2

Although there is not an inline upgrade path from Fusion 2024-2026R1 to 2026R2, there is a migration path.

This document describes how to migrate data from Nagios Fusion versions 2024R1 through 2026R1 to Fusion 2026R2, including much of your user metadata and fused Nagios Core, Nagios XI, and Nagios Log Server data.

Migrating to Fusion 2026R2 From Older Versions