promtool query range http://localhost:9090 'rate(cpu[5m])' --start=2026-08-09T00:00:00Z --end=2026-08-09T02:00:00Z --step=60s
Evaluate a PromQL expression over a time range
Samples a PromQL expression between --start and --end at intervals of --step, letting you preview what a graph will show without opening the UI. rate(cpu[5m]) computes the per-second increase of a counter averaged over five-minute windows. Times accept RFC3339 or Unix epoch seconds.
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