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Icinga

Open-source infrastructure monitoring that grew from Nagios, with a modern web UI and API.

Open sourceSelf-hostableMonitoring and error tracking tools
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About Icinga

Icinga began in 2009 as a fork of Nagios and has since been rewritten into its own platform. Icinga 2 is the monitoring core, with a declarative configuration language, built-in clustering for distributed setups and a REST API, while Icinga Web provides dashboards, problem views and modules for business processes, reporting, certificate monitoring and integrations with configuration management tools. It stays compatible with the huge library of Nagios-style check plugins, so existing checks carry over. Icinga suits organisations that want full control over on-premises monitoring and like automating configuration through code or tools like Ansible and Puppet. It needs more planning and Linux administration than hosted tools, and graphs usually come from an add-on time series backend. The software is free and open source under the GPL, and Icinga GmbH sells subscriptions with support and enterprise add-ons. It runs on Linux, with agents for Windows.

Best for: Linux-savvy teams that want scriptable, distributed on-premises monitoring.

Pros and cons

What works

  • Compatible with Nagios check plugins
  • Clustering and REST API built in
  • Configuration works well with automation tools

Why people leave

  • Requires solid Linux administration
  • Graphing needs extra components
  • Steeper setup than hosted tools

Top Icinga alternatives

See all 5
  1. 1Nagios logo
    Nagios

    The original engine, simpler if you already know its config.

    66.5
  2. 2Checkmk logo
    Checkmk

    Auto-discovery and rule-based web configuration save setup time.

    62.6
  3. 3Zabbix logo
    Zabbix

    All-in-one web UI with built-in metrics storage and templates.

    59.6
  4. 4Prometheus logo
    Prometheus

    Metrics-first and better for containers and Kubernetes.

    57.2
  5. 5Netdata logo
    Netdata

    Instant dashboards without writing configuration.

    55.3

Why people left Icinga

In reviewers' own words, from reviews of the apps they moved to. These are their opinions, not ours.

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Icinga: common questions

Is Icinga free?

Yes. Icinga is free, open-source software that you can host yourself.

Is Icinga open source?

Yes. The source code is on GitHub at Icinga/icinga2. You can also run it on your own server.

What platforms does Icinga run on?

Icinga is available for Self-hosted, Linux and Web.

What are the best alternatives to Icinga?

The highest-ranked Icinga alternatives right now are Nagios, Checkmk and Zabbix. See the full ranked list for pricing, platforms and verified facts.

See all 5 Icinga alternatives