PromQL
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External
- https://prometheus.io/docs/prometheus/latest/querying/basics/
- https://prometheus.io/docs/prometheus/latest/querying/examples/
- https://prometheus.io/docs/prometheus/latest/querying/operators/
- https://prometheus.io/docs/prometheus/latest/querying/functions/
- https://prometheus.io/docs/prometheus/latest/querying/api/
- https://promlabs.com/promql-cheat-sheet/
Internal
Data Types
Instant Vector
A set of time series containing a simple sample for each time series, all sharing the same timestamp.
Range Vector
A range vector is a set of time series containing a range of data points over time for each series. It is also known as "time ranged vector".
Scalar
A simple numeric floating point value.
String
A simple string value.
Organizatorium
Vectors. Instant vectors. Time ranged vectors.
Query for all series that are associated with a certain label:
some_metric{some_label!=""}
Query for all series that are associated with two labels:
some_metric{some_label!="",some_other_label!=""}