cAdvisor vs Netdata
A side-by-side comparison of two self-hosted monitoring & status options — licensing, setup difficulty, resource needs, and what each one replaces.
cAdvisor
Container resource usage and performance analysis
VS
Netdata
Real-time per-second infrastructure monitoring
| Feature | cAdvisor | Netdata |
|---|---|---|
| Deploy effort | Under-an-hour setup | Under-an-hour setup |
| Health score | 96 · Excellent | 100 · Excellent |
| Category | Monitoring & Status | Monitoring & Status |
| License | Apache-2.0 | GPL-3.0 |
| Language | Go | Go |
| Setup difficulty | Easy | Easy |
| Min. RAM | 64 MB | 256 MB |
| Deployment | docker, kubernetes, binary | docker, bare-metal, kubernetes |
| GitHub stars | ★ 19,440 | ★ 80,637 |
| First released | 2014 | 2013 |
| Replaces | Datadog | Datadog, New Relic |
What are cAdvisor and Netdata?
cAdvisor
cAdvisor provides container users with an understanding of the resource usage and performance characteristics of their running containers. It exposes per-container CPU, memory, network, and filesystem metrics.
- Per-container resource metrics
- Live web UI
- Prometheus metrics export
- Auto-discovers containers
Netdata
Netdata is a real-time monitoring agent that collects thousands of metrics per second and visualizes them with zero configuration. It targets administrators who want instant, granular system insight. It is deployed via Docker or native packages.
- Per-second real-time metrics
- Zero-configuration auto-discovery
- Built-in anomaly detection
- Thousands of collectors
cAdvisor vs Netdata: key differences
Both projects are written in Go. Licensing differs — Apache-2.0 for cAdvisor versus GPL-3.0 for Netdata. CAdvisor is the lighter option, starting around 64 MB of RAM against 256 MB for Netdata. Netdata has the considerably larger community, at 80,637 GitHub stars versus 19,440.
Why pick each one
Choose cAdvisor if…
- Zero configuration
- Lightweight
Watch out for
- Limited historical retention
- Best paired with Prometheus
Choose Netdata if…
- Instant insight out of the box
- Beautiful real-time charts
- Easy install
Watch out for
- Long retention needs tuning
- Cloud features are commercial
Frequently asked questions
Is cAdvisor or Netdata better?
Neither is universally better. Netdata has the larger community; both share a easy setup difficulty, so the decision comes down to features and licensing.
Are cAdvisor and Netdata free and open-source?
Yes. cAdvisor is licensed under Apache-2.0 and Netdata under GPL-3.0. Both can be self-hosted at no software cost.
Can I run cAdvisor and Netdata with Docker?
cAdvisor: yes. Netdata: yes.
Which is lighter on resources, cAdvisor or Netdata?
cAdvisor has the smaller minimum footprint at 64 MB of RAM, compared to about 256 MB for Netdata. Real-world usage depends on library size, user count, and enabled features.