Icinga2 vs. Nagios – Open Source Network Monitoring

Why Select Icinga as an Alternative to Nagios?

When it comes to Open Source network and IT monitoring solutions, we see a real benefit in choosing Icinga over Nagios. As you may know, in 2009, a group of Nagios community developers left to create a better network monitoring tool which became Icinga. Also released as Open Source, Icinga2 aims to better reflect the wishes of the community and the changing needs of the IT marketplace. It is designed to be easier to install, extend, and scale than Nagios while still being fast and robust.

Related: Read our comparison of five open source monitoring tools

Icinga2 has added new features to the platform such as a modern user interface, additional database connectors (for MySQL, Oracle, and PostgreSQL), a REST API, a new configuration format that is intuitive to write, and distributed systems for redundant monitoring. Icinga2 is a drop-in replacement for Nagios and Icinga 1.x, compatible with all existing plugins, user interfaces, and add-ons.

Organizations that are considering adopting Nagios to monitor servers and devices may want to consider Nagios alternatives like a new installation of Icinga2.

  • Icinga2 can use the broad array of common Nagios monitoring plugins, whether they run on the monitoring server or on the local client.
  • The Icinga Web 2 interface is more flexible and extensible than the basic grid interface provided by Nagios.
  • The rewrite of Nagios (Icinga1) significantly improved the efficiency of the monitoring code, and in the redesign, we know as Icinga2 this has been retained as a key design principle.

However, the true advantages of Icinga2 are deeper than these obvious benefits.

For example, of Icinga2 is designed to be object-oriented from top to bottom. Also, a rich configuration language allows expression of complex configurations in a minimal amount of text, allowing monitoring configurations to be written quickly and concisely. Combined, these two architectural features allow the creation of a large number of monitoring data points in a small amount of time.

alternatives to nagios

Finally, the clustering and zone monitoring abilities of Icinga2 yield not only high availability at several different levels, but also allows the architect to create a distributed hierarchy of monitoring systems where checks are run local to regions of the network and only the results are relayed back to the masters. In very large implementations this removes many burdens from the masters, which can spend more time on recording, display, and notification.

Monitoring is an important part of the management of every company’s network, and installing a new monitoring system can be a major investment of time and effort. When evaluating Icinga2 versus other monitoring systems we recommend keeping these architectural advantages in mind.

Want to continue reading? Check out our article that compares five leading open source monitoring tools.

Need help evaluating or deploying Icinga? Learn more about our Icinga services, support, and training.

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