Mimir Coordinator K8S

Mimir coordinator

Mimir Coordinator K8s is a Juju charm that manages the configuration, routing, and external integrations for a horizontally scalable Grafana Mimir deployment on Kubernetes. It works together with the Mimir Worker charm, following the coordinated-workers pattern. It is a component of the Canonical Observability Stack (COS): https://documentation.ubuntu.com/observability

The coordinator handles all external relations — such as metrics ingestion via Prometheus remote write, alerting, Grafana datasources, and dashboards — and distributes the generated Mimir configuration to the worker units. An nginx reverse proxy routes incoming traffic to the appropriate workers based on their assigned roles.

Key features:

• Centralized management of all external integrations, including metrics ingestion via prometheus_remote_write, visualization and data source integration with Grafana, and alerting through Alertmanager.
• Prometheus-compatible API, allowing Mimir to be used as a drop-in long-term storage backend for Prometheus metrics.
• Automatic configuration distribution to Mimir Worker units via the mimir-cluster relation.
• Built-in nginx reverse proxy for load balancing and traffic routing across workers.
• S3-compatible object storage integration for scalable metrics data persistence.
• Built-in Grafana dashboards and Prometheus alert rules for self-monitoring.
• Configurable metrics retention period and exemplar storage limits.
• TLS support via the certificates relation.
• Ingress support for external access through reverse proxies such as Traefik.
• Distributed tracing support via integration with Tempo.