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Important: This documentation is about an older version. It's relevant only to the release noted, many of the features and functions have been updated or replaced. Please view the current version.

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Open source
Grafana Loki

Grafana Loki

Grafana Loki is a set of open source components that can be composed into a fully featured logging stack. A small index and highly compressed chunks simplifies the operation and significantly lowers the cost of Loki.

Overview

Unlike other logging systems, Loki is built around the idea of only indexing metadata about your logs’ labels (just like Prometheus labels). Log data itself is then compressed and stored in chunks in object stores such as Amazon Simple Storage Service (S3) or Google Cloud Storage (GCS), or even locally on the filesystem.

Explore

Learn about Loki
Learn about the Loki architecture and components, the various deployment modes, and best practices for labels.
Set up Loki
View instructions for how to configure and install Loki, migrate from previous deployments, and upgrade your Loki environment.
Configure Loki
View the Loki configuration reference and configuration examples.
Send logs to Loki
Select one or more clients to use to send your logs to Loki.
Manage Loki
Learn how to manage tenants, log ingestion, storage, queries, and more.
Query with LogQL
Inspired by PromQL, LogQL is Grafana Loki’s query language. LogQL uses labels and operators for filtering.

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