feat(grafana): wire Prometheus datasource to main Grafana instance#24
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feat(grafana): wire Prometheus datasource to main Grafana instance#24
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Add a GrafanaDatasource selected onto the main Grafana CR (via the `dashboards: grafana` label) pointing at kube-prometheus-stack's in-cluster Prometheus, so the main dashboard has metrics out of the box. Mirrors the existing status-grafana datasource. Loki / Tempo / Alertmanager aren't installed; those datasources can be added once those backends are wired up.
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Summary
The main Grafana CR has been login-functional but had no datasources, so the home dashboard is empty. Add a `GrafanaDatasource` pointing at the kube-prometheus-stack Prometheus, selected onto the main instance via the matching `dashboards: grafana` label (the `status-grafana` instance already has its own analogous datasource).
Loki / Tempo / Alertmanager / Pyroscope are not installed — those datasources are out of scope here and can be added once the backends are.
Test plan
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