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Paessler Router Traffic Grapher (or PRTG) positions itself as a competitor to the Nagios XI, Icinga, and Zabbix solutions. As such, the web interface is a huge improvement over Nagios Core especially for graphic visualizations. Many of the same monitoring capabilities are provided via the same community-driven Nagios Exchange. Nagios XI functions as a great introduction to “Enterprise Monitoring” with features including bulk import, auto discovery, configuration wizards, authentication integration, and reporting. You’ll still need a decent amount of Linux experience with some of the less common tasks (such as installing a new plugin for new monitoring functionality and troubleshooting). Nagios XI takes you out of the realm of text configuration into the web interface where you do most of your day to day work.
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Nagios XI is the paid and heavily extended version of Nagios Core maintained by the Nagios Core developers. Unlike some of the Nagios-based products, Zabbix has many feature-rich checks built in including user emulation (such as response times during a log in and log out cycle). Zabbix touts it’s scalability and flexible permission options along with wide agent-less operating system monitoring compatibility. Zabbix has been around since it’s initial 1.0 release in 2004, is Open Source, and monetizes itself via the traditional “free but pay for support” method. Icinga is free, but funds its development via paid support contracts.
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The Web 2.0 interface is an obvious improvement over Nagios Core, as well as scalability as it supports a distributed monitoring architecture out of the box. Those familiar with Nagios products will definitely see terminology carryovers such as host groups, flap detection, and host/service checks. They’ve since rewriting the core in their 2.x release effectively leaving behind their direct connection to Nagios. Icinga, like several other entries, took the OSS foundation of Nagios Core and overlaid more feature-full monitoring functionality. You will need to have a moderate amount of Linux experience to be successful with this solution. If your monitoring requirements are not complex, are fairly rigid, and new system additions are infrequent you may be able to get away with Nagios Core. Most “check” functionality is provided by many community maintained scripts/plugins you will have to integrate into the check engine. This option, while free, will definitely require a LOT of hands-on time during initial setup. Most configuration and interaction with the system is done via text configuration files with most of the data viewable via a web interface. The free product includes the core monitoring platform and basic event/alert functionality. Nagios Core is a the free open source “central” functionality of many of the inexpensive/free monitoring options. The Vendor List (In Approximate Order of Cost) There are simply too many industry options, therefore this list focuses on internal self-hosted solutions. All of them I have heard industry feedback and consensus on, some of them I work with on a daily basis, and some of them I have simply downloaded and tested. I have not personally used every single vendor in this list in a production environment. Part 5 – Dashboards, Reports, and Access.Part 2 – Industry Leaders and Selection.
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This part two of the series will focus on providing an overview of the major vendors in the infrastructure monitoring space, help narrow down your options, and talk about the benefits of doing a Proof of Concept.