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Grafana Alloy is the new name for our distribution of the OTel collector. Grafana Agent has been deprecated and is in Long-Term Support (LTS) through October 31, 2025. Grafana Agent will reach an End-of-Life (EOL) on November 1, 2025. Read more about why we recommend migrating to Grafana Alloy.

This is documentation for the next version of Agent. For the latest stable release, go to the latest version.

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concat

The concat function concatenates one or more lists of values into a single list. Each argument to concat must be a list value. Elements within the list can be any type.

Examples

> concat([])
[]

> concat([1, 2], [3, 4])
[1, 2, 3, 4]

> concat([1, 2], [], [bool, null])
[1, 2, bool, null]

> concat([[1, 2], [3, 4]], [[5, 6]])
[[1, 2], [3, 4], [5, 6]]