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Loki + Grafana — Centralized Logs

15. 08. 2025 Updated: 24. 03. 2026 1 min read intermediate

Cloud Intermediate

Loki + Grafana — Centralized Logs

LokiGrafanaLogging 3 min read

Lightweight log aggregation with Loki and visualization in Grafana.

Why Loki?

Loki is “Prometheus for logs”. It doesn’t index log content, only labels. Much cheaper than Elasticsearch.

Installation

helm install loki grafana/loki-stack \
  --namespace monitoring \
  --set promtail.enabled=true \
  --set grafana.enabled=false  # We already have Grafana

LogQL Queries

{namespace=”production”, app=”api”} |= “error”
{app=”api”} | json | status >= 500
rate({app=”api”} |= “error” [5m])

Summary

Loki + Promtail + Grafana = affordable and efficient centralized logging. LogQL is intuitive for Prometheus users.

Need Help with Implementation?

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CORE SYSTEMS team

We build core systems and AI agents that keep operations running. 15 years of experience with enterprise IT.