## Why
Traefik metrics (traefik_entrypoint_requests_total, traefik_service_*, etc.) are now flowing into VictoriaMetrics with the relabeled `traefik_instance` label, but there is no dashboard to view them.
## Changes
- Add `apps/base/grafana/dashboards/traefik.yaml`: GrafanaDashboard CR mirroring the redis.yaml sibling (gzipJson embed, `instanceSelector dashboards: grafana`, `resyncPeriod: 5m`, `allowCrossNamespaceImport: false`)
- Embed the official Traefik Standalone dashboard (grafana.com ID 17346, revision 9), adapted:
- strip `__inputs`/`__requires`/`__elements` and the `DS_PROMETHEUS` datasource variable
- rewrite all prometheus datasource uids to the estate VictoriaMetrics uid `det2y55dac4jkc`
- add an `instance` template variable over `traefik_instance` and filter every query with `traefik_instance=~"$instance"` so traefik-internal / traefik-external are switchable
- chain the entrypoint/service variable queries through the instance filter
- Register the dashboard in `apps/base/grafana/kustomization.yaml`
Validated: gzipJson decode roundtrip, `kustomize build`, kubeconform.
Reviewed-on: #407
Co-authored-by: unkin-agent <unkin-agent@unkin.net>
Co-committed-by: unkin-agent <unkin-agent@unkin.net>
unkin-agent
61b5a7f695