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This means that there is one argument v which is an instant vector, which if not provided it will default to the value of the expression vector(time()) .

Prometheus provides a functional query language called PromQL (Prometheus Query Language) that lets the user select and aggregate time series data in real time. The result of an expression can either be shown as a graph, viewed as tabular data in Prometheus's expression browser, or consumed by external systems via the HTTP API.

The PromQL expressions in this doc can be used to configure alerts. Before expressions can be used in alerts, monitoring must be enabled. For more information, ...

PromQL, short for Prometheus Querying Language, is the main way to query metrics within Prometheus. You can display an expression's return ...

30.03.2017 · Prometheus Querying 查询 prometheus提供了功能性表达式语言，可让用户对于时间序列的数据进行选择和聚合。 ... expression language data types. prometheus 表达式语言中，有四种类型: 即时向量(instant vector) ...

To use Prometheus's built-in expression browser, navigate to http://localhost:9090/graph and choose the "Console" view within the "Graph" tab. As you can gather from localhost:9090/metrics, one metric that Prometheus exports about itself is named prometheus_target_interval_length_seconds (the actual amount of time between target scrapes). Enter the below into the expression console and then click "Execute":

Prometheus Querying

In Greek mythology, Prometheus (/ p r ə ˈ m iː θ i ə s /; Ancient Greek: Προμηθεύς, [promɛːtʰéu̯s], possibly meaning "forethought") is a Titan god of fire. Prometheus is best known for defying the gods by stealing fire from them and giving it to humanity in the form of technology, knowledge, and more generally, civilization.In some versions of the myth he is also credited ...

Note that an expression resulting in a range vector cannot be graphed directly, but viewed in the tabular ("Console") view of the expression browser.

Expression language data types. In Prometheus's expression language, an expression or sub-expression can evaluate to one of four types: Instant vector - a set of time series containing a single sample for each time series, all sharing the same timestamp; Range vector - a set of time series containing a range of data points over time for each time series

Querying Prometheus. Examples; Expression language data types; Literals. String literals; Float literals. Time series ...

Restart Prometheus with the new configuration and verify that a new time series with the metric name job_instance_mode:node_cpu_seconds:avg_rate5m is now available by querying it through the expression browser or graphing it.

05.10.2020 · I'm trying to calculate easter sunday in PromQL using Gauss's Easter algorithm (I need to ignore some alert rules on public holidays). I can calculate the day, but I'm having a problem with the month as I need something like an if/else expression. My recording rule easter_sunday_in_april returns 1 if eastern is in april and 0 if it is in march.

The expression browser is available at /graph on the Prometheus server, allowing you to enter any expression and see its result either in a table or graphed ...

Data Types of Prometheus Expressions · Scalar: The expressions resulting in a single constant numeric floating number is scalar. · String: The ...

Using the expression browser. Let us explore data that Prometheus has collected about itself. To use Prometheus's built-in ...

The following binary arithmetic operators exist in Prometheus: ... Vector elements for which the expression is not true or which do not find a match on the ...

Expression browser. The expression browser is available at /graph on the Prometheus server, allowing you to enter any expression and see its result either in a table or graphed over time. This is primarily useful for ad-hoc queries and debugging. For graphs, use Grafana or Console templates. This documentation is open-source. Please help improve it by filing issues or pull requests.

Prometheus has its own language specifically dedicated to queries called PromQL. It is a powerful functional expression language, ...

29.10.2019 · Prometheus is my go-to tool for monitoring these days. At the core of Prometheus is a time-series database that can be queried with a powerful language for everything – this includes not only graphing but also alerting. Alerts generated with Prometheus are usually sent to Alertmanager to deliver via various media like email or Slack message.

The PromQL expressions in this doc can be used to configure alerts. Before expressions can be used in alerts, monitoring must be enabled. For more information, refer to the documentation on enabling monitoring at the cluster level or at the project level. For more information about querying Prometheus, refer to the official Prometheus documentation.

04.01.2022 · Now you can run the below expression on your expression browser . E.g, prometheus_http_requests_total instant vector. So you can see above image it has return all the time series with the name prometheus_http_request_total and it has return one …

Format Overview

Expression browser. The expression browser is available at /graph on the Prometheus server, allowing you to enter any expression and see its result either in a table or graphed over time.. This is primarily useful for ad-hoc queries and debugging. For graphs, use Grafana or Console templates. This documentation is open-source.Please help improve it by filing issues or pull …