Using Prometheus to Automate Power Capacity Planning
summary
Hudson River Trading points snmp_exporter at vendor PDUs, uses recording rules to normalize disparate SNMP metrics into a single per-PDU load metric, and queries NetBox to pull per-PDU amp allocations which are written to the textfile collector as thresholds. Prometheus then computes percent available power per rack so an automated tool can query for racks with enough headroom — examples include 24A vs 16A allocations — removing manual capacity triage.
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