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K3s
A lightweight, single-binary Kubernetes distribution built for edge, IoT, and small-footprint clusters.
Official site ↗K3s is a certified distribution packaged as a single small binary, with the datastore, networking, and extras a full cluster needs simplified or swapped for lighter defaults — built for edge devices and small clusters, but perfectly capable of running a production workload on a handful of nodes.
It’s the cluster this site’s own infrastructure runs on: a production K3s cluster on Hetzner, reconciled by under a single-operator GitOps model — Authentik SSO, step-ca private PKI, CloudNativePG, and a Grafana/Loki/Prometheus stack all riding on top of it.