SHSelfHostIndex

Fluentd vs Thanos

A side-by-side comparison of two self-hosted monitoring & status options — licensing, setup difficulty, resource needs, and what each one replaces.

Not the right match-up?
FL Fluentd Unified logging layer for collecting and routing data VS TH Thanos Highly available Prometheus setup with long-term storage
FeatureFluentdThanos
CategoryMonitoring & StatusMonitoring & Status
LicenseApache-2.0Apache-2.0
LanguageRubyGo
Setup difficultyMediumHard
Min. RAM128 MB1,024 MB
Deploymentdocker, kubernetes, binarydocker, kubernetes, helm
GitHub stars★ 13,576★ 14,167
First released20112018
ReplacesLogstashDatadog, Grafana Cloud

Why pick each one

Choose Fluentd if…

  • Huge plugin ecosystem
  • Proven at scale
Fluentd details

Choose Thanos if…

  • Scales Prometheus to massive deployments
  • Cheap long-term storage
Thanos details

Frequently asked questions

Is Fluentd or Thanos better?

Neither is universally better. Thanos has the larger community, while Fluentd is simpler to set up (medium difficulty). Choose based on the comparison table above and your own setup.

Are Fluentd and Thanos free and open-source?

Yes. Fluentd is licensed under Apache-2.0 and Thanos under Apache-2.0. Both can be self-hosted at no software cost.

Can I run Fluentd and Thanos with Docker?

Fluentd: yes. Thanos: yes.

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