Hands-On Infrastructure Monitoring with Prometheus

Aggregation operators

By employing aggregation operators, we can take an instant vector and aggregate its elements, resulting in a new instant vector, usually with fewer elements. Every aggregation of an instant vector such as this works in the ways that we described in the Vertical aggregation section of Chapter 4, Prometheus Metrics Fundamentals.

The available aggregation operators are as follows:

Operator	Description	Requirements
sum	Sums the elements
min	Selects the minimum element
max	Selects the maximum element
avg	Calculates the average of the elements
stddev	Calculates the standard deviation of the elements
stdvar	Calculates the standard variance of the elements
count	Counts ...