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LGTM Stack

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description LGTM Stack Overview

The LGTM Stack is an open-source observability platform comprising Loki, Grafana, Tempo, and Mimir. Loki aggregates log data, Tempo manages distributed tracing, and Mimir handles time-series metrics, all of which are visualized and queried through Grafana dashboards. Developed and maintained by Grafana Labs, the stack provides a unified environment for monitoring software systems and infrastructure. It is intended for site reliability engineers and developers needing to correlate metrics, logs, and traces to diagnose performance issues.

help LGTM Stack FAQ

What does LGTM stand for?

LGTM stands for Loki, Grafana, Tempo, and Mimir. Together they provide logs, dashboards, distributed traces, and time-series metrics for application observability.

What is Loki used for in the LGTM Stack?

Loki aggregates and stores log data for querying. Unlike many traditional log systems, it indexes labels and is designed to work closely with Grafana for exploration.

How do Tempo and Mimir fit into LGTM?

Tempo stores distributed traces, which show how a request moves through services. Mimir stores and queries time-series metrics, such as request rates, latency, and CPU usage.

Does LGTM require Grafana Cloud?

No, the LGTM components are open-source and can be self-hosted. Teams can also use Grafana Cloud if they prefer a managed service instead of operating Loki, Tempo, Mimir, and Grafana themselves.

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