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Metric queries | Grafana Labs › LogQL › Metric queries Metric queries Metric queries extend log queries by applying a function to log query results. This powerful feature creates metrics from logs. Metric queries can be used to calculate the rate of error messages or the top N log sources with the greatest quantity of logs over the last 3 hours.

Use this transformation in panels that have multiple queries, if you want to hide one or more of the queries. Grafana displays the query identification letters in dark gray text. Click a query identifier to toggle filtering. If the query letter is white, then the results are displayed. If the query letter is dark, then the results are hidden.

Grafana displays the query identification letters in dark gray text. Click a query identifier to toggle filtering. If the query letter is white, then the results are displayed. If the query letter is dark, then the results are hidden. In the example below, the panel has three queries (A, B, C). I removed the B query from the visualization.

Click Query options next to the data source selector to see settings for your selected data source. Changes you make here affect only queries made in this panel. Grafana sets defaults that are shown in dark gray text. Changes are displayed in white text. To return a field to the default setting, delete the white text from the field.

Data source queries return data that appear in visualizations. The query language in which you write depends on the data source you query. Grafana supports ...

Copying data from storage to the Grafana server for processing is inefficient, so expressions are targeted at lightweight data processing. Expressions work with data source queries that return time series or number data. They also operate on multiple-dimensional data.

An open-source monitoring system with a dimensional data model, flexible query language, efficient time series database and modern alerting approach.

This is an alias for aliasByNode . aliasQuery (seriesList, search, replace, newName)¶. Performs a query to alias the metrics ...

Functions reference. Functions Variables. There are some built-in template variables available for using in functions: $__range_ms - panel time range in ms ...

Template functions. The text template format used in | line_format and | label_format support the usage of functions.. All labels are added as variables in the template engine. They can be referenced using they label name prefixed by a .(e.g .label_name).For example the following template will output the value of the path label:

The functions: rate (log-range): calculates the number of entries per second count_over_time (log-range): counts the entries for each log stream within the given range. bytes_rate (log-range): calculates the number of bytes per second for each stream. bytes_over_time (log-range): counts the amount ...

Graphite. Grafana has an advanced Graphite query editor that lets you quickly navigate the metric space, add functions, change function parameters and much ...

This function converts the entire string to lowercase or uppercase. Signatures: ToLower(string) string; ToUpper(string) string; Examples: "{{.request_method | ToLower}}" "{{.request_method | ToUpper}}" `{{ToUpper "This is a string" | ToLower}}` Note: In Grafana Loki 2.1 you can also use respectively lower and upper shortcut, e.g {{.request_method | lower }}.

Query expressions can contain references to other variables and in effect create linked variables. Grafana detects this and automatically refreshes a variable when one of its linked variables change. Query expressions Query expressions are different for each data source. For more information, refer to the documentation for your data source.

Grafana automatically calculates an appropriate interval and it can be used as a variable in templated queries. The variable is either in seconds: $__interval or in milliseconds: $__interval_ms. It is typically used in aggregation functions like sum or average.