ADR-0109: Perses instead of Grafana

Superseded by ADR-0169 on 2026-11-01: the platform no longer deploys Perses. This decision stays as history.

• Status: accepted
• Date: 2026-10-30
• French version: ../ADR-0109-perses.md

Context

Grafana is AGPL-3.0-only.

Decision

Dashboards use Perses (Apache-2.0); Grafana carries replacement: perses.

Consequences

Removed from compose and kube-prometheus-stack; the host entry remains.

Evidence

• catalog/components/grafana.yaml
• Files removed by ADR-0169: catalog/components/perses.yaml, deploy/observability/perses, deploy/compose/perses.