Arve Knudsen

@aknudsen.bsky.social

Staff software engineer at Grafana Labs. Prometheus maintainer. Based out of Lachen, Switzerland.

Are you using target relabeling rules in @prometheus.io? I wrote a short blog post about the new relabeling rule visualizer I built that just got released with Prometheus v3.8.0, and which can help you make sense of your rules: prometheus.io/blog/2025/12...

Visualizing Target Relabeling Rules in Prometheus 3.8.0 | Prometheus

An open-source monitoring system with a dimensional data model, flexible query language, efficient time series database and modern alerting approach.

prometheus.io

A product that (almost) everyone uses from mid-sized tech companies and up but I rarely hear talked about: Grafana In The Pragmatic Engineer 2025 survey, it had more mentions than Cursor, and dominates as the answer to "how do you turn information into graphs" This is Grafana:

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We use OTEL for tracing in most of our services going to a local Tempo instance, we log using svlogd writing to a local logging directory that gets tailed by promtail and shipped to a local Loki instance. Grafana agents on each host get host metrics and scrape local containers to forward to Victoria