Upgrade Grafana

Upgraded Grafana from 11.4.0 (Helm chart) to 12.3.3, converting from Helm to Kustomize with a home-built container image.

What Changed

• Image: docker.io/grafana/grafana:11.4.0 → registry.ops.eblu.me/blumeops/grafana:v12.3.3
• Deployment: Helm multi-source (chart + values) → single Kustomize directory
• ArgoCD app: Simplified to one source pointing at argocd/manifests/grafana/

All existing datasources (prometheus, loki, TeslaMate), dashboard ConfigMaps, and Authentik OIDC were preserved without changes.

Grafana 12 Breaking Changes

None affected us:

• Angular plugin removal — our dashboards already used React panels
• Datasource UID format enforcement — our UIDs were already compliant
• Annotation table migration — completed automatically on the small SQLite DB

How to Repeat

To upgrade Grafana again in the future:

1. Update CONTAINER_APP_VERSION in containers/grafana/Dockerfile
2. Build and push via mise run container-build-and-release grafana
3. Update the image tag in argocd/manifests/grafana/deployment.yaml
4. Update service-versions.yaml
5. Sync: argocd app sync grafana

The SQLite PVC is disposable — dashboards come from ConfigMaps and datasources from config.

Related

• grafana — Service reference card
• build-grafana-container — Building the container image
• kustomize-grafana-deployment — Kustomize manifest structure