Kapacitor vs Grafana Loki

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

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FeatureKapacitorGrafana Loki
CategoryMonitoring & StatusMonitoring & Status
LicenseMITAGPL-3.0
LanguageGoGo
Setup difficultyMediumMedium
Min. RAM512 MB512 MB
Deploymentdocker, bare-metal, binarydocker, kubernetes, helm
GitHub stars★ 2,373★ 28,687
First released20152018
ReplacesDatadog Monitors, Splunk ITSISplunk, Datadog Logs

Why pick each one

Choose Kapacitor if…

  • Tight InfluxDB integration
  • Flexible alert routing
Kapacitor details

Choose Grafana Loki if…

  • Cheap to run compared to full-text indexers
  • Familiar Prometheus-style labels
Grafana Loki details

Frequently asked questions

Is Kapacitor or Grafana Loki better?

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

Are Kapacitor and Grafana Loki free and open-source?

Yes. Kapacitor is licensed under MIT and Grafana Loki under AGPL-3.0. Both can be self-hosted at no software cost.

Can I run Kapacitor and Grafana Loki with Docker?

Kapacitor: yes. Grafana Loki: yes.

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