Icinga 2 vs Observium
A side-by-side comparison of two self-hosted monitoring & status options — licensing, setup difficulty, resource needs, and what each one replaces.
| Feature | Icinga 2 | Observium |
|---|---|---|
| Deploy effort | Under-an-hour setup | Read-the-docs project |
| Health score | 86 · Excellent | 0 · At risk |
| Category | Monitoring & Status | Monitoring & Status |
| License | GPL-2.0 | GPL-3.0 |
| Language | C++ | Shell |
| Setup difficulty | Hard | Medium |
| Min. RAM | 512 MB | 1,024 MB |
| Deployment | docker, bare-metal, source | bare-metal, source |
| GitHub stars | ★ 2,239 | ★ 1 |
| First released | 2014 | 2010 |
| Replaces | SolarWinds, PRTG | SolarWinds, PRTG |
What are Icinga 2 and Observium?
Icinga 2
Icinga 2 is a modern monitoring system that checks the availability of network resources and notifies users of outages. It is Nagios-compatible, scales across clusters, and pairs with Icinga Web for a polished interface.
- Distributed cluster monitoring
- REST API for automation
- Nagios plugin compatibility
- Modern Icinga Web UI
Observium
Observium is a network monitoring platform that auto-discovers devices via SNMP and collects performance and health data. It focuses on a clean interface and low-maintenance operation for network infrastructure.
- SNMP auto-discovery
- Network device dashboards
- Low maintenance design
- Historical performance graphs
Icinga 2 vs Observium: key differences
Icinga 2 is written in C++, while Observium is built with Shell. Licensing differs — GPL-2.0 for Icinga 2 versus GPL-3.0 for Observium. Icinga 2 is the lighter option, starting around 512 MB of RAM against 1,024 MB for Observium. Observium is the more established project (first released 2010), while Icinga 2 arrived in 2014. Icinga 2 has the considerably larger community, at 2,239 GitHub stars versus 1. Icinga 2 lists first-class Docker deployment; Observium does not.
Why pick each one
Choose Icinga 2 if…
- Scales to large environments
- Active development and community
Watch out for
- Steep initial setup
- Multiple components to manage
Choose Observium if…
- Discovers devices automatically
- Clean interface
Watch out for
- Community edition lags the paid version
- SNMP-centric
Frequently asked questions
Is Icinga 2 or Observium better?
Neither is universally better. Icinga 2 has the larger community, while Observium is simpler to set up (medium difficulty). Choose based on the comparison table above and your own setup.
Are Icinga 2 and Observium free and open-source?
Yes. Icinga 2 is licensed under GPL-2.0 and Observium under GPL-3.0. Both can be self-hosted at no software cost.
Can I run Icinga 2 and Observium with Docker?
Icinga 2: yes. Observium: check the project docs for container support.
Which is lighter on resources, Icinga 2 or Observium?
Icinga 2 has the smaller minimum footprint at 512 MB of RAM, compared to about 1,024 MB for Observium. Real-world usage depends on library size, user count, and enabled features.