node-exporter's host label is the short name (benjy), the first rule derived the FQDN from the miner's instance, and quantus:device_hashrate_per_watt produced no series. Verified against live labels on the metrics host. Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01CBgs2nSi4H2mdh8kD8vMX5