cAdvisor vs Robusta
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
Robusta
Kubernetes observability and automated troubleshooting
| Feature | cAdvisor | Robusta |
|---|---|---|
| Deploy effort | Under-an-hour setup | Read-the-docs project |
| Health score | 96 · Excellent | 87 · Excellent |
| Category | Monitoring & Status | Monitoring & Status |
| License | Apache-2.0 | MIT |
| Language | Go | Python |
| Setup difficulty | Easy | Medium |
| Min. RAM | 64 MB | 256 MB |
| Deployment | docker, kubernetes, binary | kubernetes, helm |
| GitHub stars | ★ 19,439 | ★ 3,101 |
| First released | 2014 | 2021 |
| Replaces | Datadog | Datadog, PagerDuty |
What are cAdvisor and Robusta?
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
Robusta
Robusta enhances Prometheus alerts for Kubernetes with enriched context, automated troubleshooting, and notifications to Slack and other channels. It helps teams understand and respond to cluster issues faster.
- Enriched Kubernetes alerts
- Automated remediation playbooks
- Slack and Teams notifications
- Crash and OOM diagnostics
cAdvisor vs Robusta: key differences
CAdvisor is written in Go, while Robusta is built with Python. Licensing differs — Apache-2.0 for cAdvisor versus MIT for Robusta. CAdvisor is the lighter option, starting around 64 MB of RAM against 256 MB for Robusta. CAdvisor is the more established project (first released 2014), while Robusta arrived in 2021. CAdvisor has the considerably larger community, at 19,439 GitHub stars versus 3,101. CAdvisor lists first-class Docker deployment; Robusta does not.
Why pick each one
Choose cAdvisor if…
- Zero configuration
- Lightweight
Watch out for
- Limited historical retention
- Best paired with Prometheus
Choose Robusta if…
- Makes alerts actionable
- Strong Kubernetes focus
Watch out for
- Kubernetes only
- Best with Prometheus already running
Frequently asked questions
Is cAdvisor or Robusta better?
cAdvisor is the stronger all-round pick: it has both the larger community and the simpler easy setup. Consider Robusta if its specific feature set fits your needs better.
Are cAdvisor and Robusta free and open-source?
Yes. cAdvisor is licensed under Apache-2.0 and Robusta under MIT. Both can be self-hosted at no software cost.
Can I run cAdvisor and Robusta with Docker?
cAdvisor: yes. Robusta: check the project docs for container support.
Which is lighter on resources, cAdvisor or Robusta?
cAdvisor has the smaller minimum footprint at 64 MB of RAM, compared to about 256 MB for Robusta. Real-world usage depends on library size, user count, and enabled features.