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Lightning Talk: Improved Prometheus filtering in Grafana

Lightningat PromCon EU 2025 · 2025-10-21..10-22· [observability, developer-experience]
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slides:none on file

Compact UI replaces large filter bars with pill-style labels and full value lists on hover, plus improved keyboard navigation. Dashboard default filters are stored in the JSON model, editable and restorable but not removable from the bar. A new group by variable sends selected values to the Prometheus datasource which attaches a by clause to aggregate PromQL queries (feature-flagged). Context-aware suggestions use metric names and existing filters, with grayed-out not applicable filters, batching for high-cardinality values, recent/recommended filter lists, and per-panel filtering.

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