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mimir

Stand up Grafana Mimir for horizontally scalable, multi-tenant, long-term Prometheus + OTLP metrics storage. Covers monolithic / read-write / microservices deployment, S3 / GCS / Azure / filesystem block storage, Prometheus `remote_write` and OTLP ingestion, multi-tenancy with `X-Scope-OrgID`, ingester replication factor, compactor retention, and per-tenant limits. Use when running Mimir locally or on Kubernetes (Helm `mimir-distributed`), scaling Prometheus past a single node, picking ingest / query / backend split, configuring tenants and ingestion rate, debugging `/ready` 503s or `429 Too Many Requests`, or pointing Grafana at a Mimir datasource — even when the user says "I need long-term Prometheus storage", "scale Prometheus", "multi-tenant metrics backend", "Cortex replacement", "remote_write target", or "store 10M active series" without naming Mimir.

skills/grafana-lgtm/mimir/SKILL.md

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# Grafana Mimir

> **Docs**: https://grafana.com/docs/mimir/latest/

Horizontally scalable, multi-tenant, long-term storage for Prometheus + OpenTelemetry metrics.

## Prerequisites

- Docker (for quick start) or a Kubernetes cluster (for Helm)
- An object-storage bucket for production (S3/GCS/Azure) — filesystem only for dev
- Prometheus or Alloy able to remote_write to the Mimir push endpoint

## Common Workflows
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