29 lines
852 B
Plaintext
29 lines
852 B
Plaintext
---
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page_title: v4 - uuid - Functions - Configuration Language
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sidebar_title: uuidv4
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description: The uuidv4 function generates a unique id.
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---
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# `uuidv4` Function
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`uuidv4` generates a unique identifier string.
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The id is a generated and formatted as required by [RFC 4122 section
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4.4](https://tools.ietf.org/html/rfc4122#section-4.4), producing a Version 4
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UUID. The result is a UUID generated only from pseudo-random numbers.
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This function produces a new value each time it is called, and so using it
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directly in resource arguments will result in spurious diffs. We do not
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recommend using the `uuidv4` function in resource configurations.
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## Examples
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```shell-session
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> uuidv4()
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b5ee72a3-54dd-c4b8-551c-4bdc0204cedb
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```
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## Related Functions
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- [`uuidv5`](/docs/templates/hcl_templates/functions/uuid/uuidv5), which generates name-based UUIDs.
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