Apply multiple functions on metric

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Avner Adania

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Feb 26, 2020, 9:37:50 AM2/26/20

to Prometheus Users

i'm trying to apply two function on one metric.

For example:

i would like to get a perSecond(Graphite function) on a sumSeries function:

perSecond(sumSeries(prefix.region.cluster.metric_name.*.offset),"Rate")

Question is how to apply two or more functions on one metric?

Aliaksandr Valialkin

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Feb 26, 2020, 5:26:07 PM2/26/20

to Avner Adania, Prometheus Users

I believe something like the following PromQL query should work for your case:

sum(rate(metric[5m]))

Note that you cannot swap sum() and rate() in the query in general case, since this can give unexpected results. See https://www.robustperception.io/rate-then-sum-never-sum-then-rate for details.

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