Aggregates and indexes logs using a label-based approach inspired by Prometheus for efficient log storage and querying.
Reduces operational complexity and cost by indexing only metadata labels instead of full log text, enabling seamless integration with Prometheus metrics labels.
Use for centralized log aggregation in Kubernetes environments, automatically indexing Pod labels for easy log correlation.
Use for building scalable, multi-tenant logging systems that support high availability and horizontal scaling.
Use for integrating log data with Grafana dashboards to correlate logs and metrics in a unified observability platform.

Should you depend on it?

License terms, project hygiene and risks, from GitHub metadata and GStars' snapshots.

License

AGPL 3.0

Network copyleft: like the GPL, and also triggered by offering the software over a network.

Community files

README: present
Contributing guide: present
Code of conduct: present

Watch-outs

AGPL-style copyleft also applies when the software is offered over a network.

General guidance from repository metadata, not legal advice. How we score

From the README

Loki is a horizontally-scalable, highly-available, multi-tenant log aggregation system inspired by Prometheus. It is designed to be very cost effective and easy to operate. It does not index the contents of the logs, but rather a set of labels for each log stream.

Compared to other log aggregation systems, Loki:

A Loki-based logging stack consists of 3 components:

Note that Alloy replaced Promtail in the stack, because Promtail is considered to be feature complete, and future development for logs collection will be in Grafana Alloy.

Loki is like Prometheus, but for logs: we prefer a multidimensional label-based approach to indexing, and want a single-binary, easy to operate system with no dependencies. Loki differs from Prometheus by focusing on logs instead of metrics, and delivering logs via push, instead of pull.

Effective March 16, 2026, the Grafana Loki Helm chart will be forked to a new repository grafana-community/helm-charts. The chart in the Loki repository will continue to be maintained for GEL users only. See #20705 for details.

Daily snapshots

Stars gained per day, and how forks and open issues moved, from GStars' daily snapshots

+433 stars over 89 days across 15 snapshot days; best day +8 on Aug 10.

Forks

4.2K+96

Open issues

1.1K-623

Compared with peers in Monitoring

Fastest-growing repositories GStars tracks in this cohort for the week of Nov 8, by 7-day star growth

View category →

grafana/loki compared with Monitoring repositories by stars, 7-day star growth, health score and last release
Repository	Stars	+7d	Health	Last release
ruvnet/RuView	103.9K	+1.6K	75	today
henrygd/beszel	27.1K	+262	54	18 days ago
TwiN/gatus	12.7K	+210	64	12 days ago
VictoriaMetrics/VictoriaMetrics	18.1K	+70	75	1 day ago
grafana/loki	29.1K	—	65	1 day ago
vectordotdev/vector	22.8K	—	64	11 days ago
Category median	22.8K	+236	64	—

Compare loki with RuView, beszel, gatus →

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