Graylog vs Prometheus

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?
FeatureGraylogPrometheus
CategoryMonitoring & StatusMonitoring & Status
LicenseSSPL-1.0Apache-2.0
LanguageJavaGo
Setup difficultyMediumMedium
Min. RAM2,048 MB512 MB
Deploymentdocker, bare-metaldocker, binary, helm
GitHub stars★ 8,105★ 65,616
First released20102015
ReplacesSplunk, Datadog LogsDatadog

Why pick each one

Choose Graylog if…

  • Powerful search and pipelines
  • Polished web UI
Graylog details

Choose Prometheus if…

  • Powerful query language
  • Reliable and scalable
  • Huge ecosystem
Prometheus details

Frequently asked questions

Is Graylog or Prometheus better?

Neither is universally better. Prometheus has the larger community; both share a medium setup difficulty, so the decision comes down to features and licensing.

Are Graylog and Prometheus free and open-source?

Yes. Graylog is licensed under SSPL-1.0 and Prometheus under Apache-2.0. Both can be self-hosted at no software cost.

Can I run Graylog and Prometheus with Docker?

Graylog: yes. Prometheus: yes.

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