Technitium DNS Exporter

Dashboard for the Technitium DNS Prometheus Exporter - monitor a single Technitium DNS server or a whole cluster from one exporter instance.

Inspired by pihole-exporter and the Pi-hole Exporter Grafana dashboard. After migrating from Pi-hole to Technitium, I couldn't find any exporter that provided the metrics I needed while remaining simple and reliable - so I built one.

What you get

• Realtime metrics (Technitium v15+ lifetime counters): queries/sec, cache hit %, block %, SERVFAIL errors, uptime, lifetime clients
• Traffic overview (window-based stats, LastHour/LastDay/…): query mix, % blocked, Pi-hole-style top clients, top domains and top blocked domains
• Inventory & health: zone health table with serials, DHCP scope leases, cache size, block/allow list sizes
• Server status: API reachability, DNS resolution health check, and server version at a glance
• Cluster mode: every panel filters by the server label - one dashboard, dropdown per node

Requirements

• The exporter (Docker images for amd64 / arm64 / armv7) with a read-only Technitium API token - setup steps in the README
• The DNS Health panel needs Technitium ≥ 15.3 and the token account to hold DnsClient: View; on older versions it shows n/a (by design, not a bug)

Bonus: the repo also ships ready-made Prometheus alerting rules covering exporter/API availability, resolution failures, SERVFAIL rate, and silent block-list collapse.