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# Description The output of the example on [uuidv4 Function](https://developer.hashicorp.com/packer/docs/templates/hcl_templates/functions/uuid/uuidv4) is not a valid RFC compliant UUIDv4. It indicates the usage of the `uuidv4()` function and outputs `b5ee72a3-54dd-c4b8-551c-4bdc0204cedb` which is not a valid UUIDv4. I've corrected the example to output a UUIDv4 conforming to the RFC as such `xxxxxxxx-xxxx-4xxx-Nxxx-xxxxxxxxxxxx`, where: - The 13th character is always `4` (indicating version 4). - The 17th character must be either `8`, `9`, `a`, or `b` (indicating the first character of the variant). # Changes ```diff - b5ee72a3-54dd-c4b8-551c-4bdc0204cedb + 9fc99a70-7cd5-482d-bb2b-03af016e4e94 ``` Replaces the old UUID output with a valid RFC compliant UUIDv4. # References - [RFC 4122](https://datatracker.ietf.org/doc/html/rfc4122) - [RFC 9562](https://datatracker.ietf.org/doc/html/rfc9562) # Misc. To make sure this wasn't an issue with the `uuidv4()` function within Hashicorp's [packer](https://github.com/hashicorp/packer) I tested the function in the following way: ### Command executed: ```ps > .\packer.exe inspect .\uuid.pkr.hcl ``` ### Contents of the _uuid.pkr.hcl_ file: ```hcl locals { uuid_0 = uuidv4() uuid_1 = uuidv4() uuid_2 = uuidv4() uuid_3 = uuidv4() uuid_4 = uuidv4() uuid_5 = uuidv4() uuid_6 = uuidv4() uuid_7 = uuidv4() uuid_8 = uuidv4() uuid_9 = uuidv4() } ``` ### Output: ```ps Packer Inspect: HCL2 mode > input-variables: > local-variables: local.uuid_0: "90877db8-5519-46ea-ae15-7dfb92594064" local.uuid_1: "fe6a4649-97d9-4686-b981-3295175f941a" local.uuid_2: "9944d83d-dab2-4cfb-a1db-572d19271e7a" local.uuid_3: "547cddb7-c979-4b87-90d0-2bd9b68858b5" local.uuid_4: "c13dc47a-552c-4dfb-a75d-2f63bb248b41" local.uuid_5: "3db1ce29-bdde-4642-b010-1a41d47c22a3" local.uuid_6: "4a020460-edd1-471d-b8a2-5956c0c68257" local.uuid_7: "1845bf87-6908-4fc0-8f11-b5b4f36c60a7" local.uuid_8: "f5c7e552-b799-45f3-8172-46162eadfd89" local.uuid_9: "057c2eaf-6769-4a8d-90c8-775aec80496a" > builds: ``` |
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| .github | ||
| .release | ||
| acctest | ||
| builder | ||
| cmd | ||
| command | ||
| contrib/zsh-completion | ||
| datasource | ||
| examples | ||
| fix | ||
| hcl2template | ||
| helper | ||
| internal | ||
| packer | ||
| packer_test | ||
| post-processor | ||
| provisioner | ||
| scripts | ||
| version | ||
| website | ||
| .copywrite.hcl | ||
| .gitattributes | ||
| .gitignore | ||
| .go-version | ||
| .golangci.yml | ||
| background_check.go | ||
| background_check_openbsd.go | ||
| CHANGELOG.md | ||
| checkpoint.go | ||
| CODEOWNERS | ||
| commands.go | ||
| config.go | ||
| config_test.go | ||
| Dockerfile | ||
| go | ||
| go.mod | ||
| go.sum | ||
| LICENSE | ||
| log.go | ||
| main.go | ||
| main_test.go | ||
| Makefile | ||
| panic.go | ||
| README.md | ||
| tty.go | ||
| tty_solaris.go | ||
| Vagrantfile | ||
Packer
Packer is a tool for building identical machine images for multiple platforms from a single source configuration.
Packer is lightweight, runs on every major operating system, and is highly performant, creating machine images for multiple platforms in parallel. Packer supports various platforms through external plugin integrations, the full list of which can be found at https://developer.hashicorp.com/packer/integrations.
The images that Packer creates can easily be turned into Vagrant boxes.
Quick Start
Packer
There is a great introduction and getting started guide for building a Docker image on your local machine without using any paid cloud resources.
Alternatively, you can refer to getting started with AWS to learn how to build a machine image for an external cloud provider.
HCP Packer
HCP Packer registry stores Packer image metadata, enabling you to track your image lifecycle.
To get started with building an AWS machine image to HCP Packer for referencing in Terraform refer to the collection of HCP Packer Tutorials.
Documentation
Comprehensive documentation is viewable on the Packer website at https://developer.hashicorp.com/packer/docs.
Contributing to Packer
See CONTRIBUTING.md for best practices and instructions on setting up your development environment to work on Packer.
Unmaintained Plugins
As contributors' circumstances change, development on a community maintained plugin can slow. When this happens, HashiCorp may use GitHub's option to archive the plugin’s repository, to clearly signal the plugin's status to users.
What does unmaintained mean?
- The code repository and all commit history will still be available.
- Documentation will remain on the Packer website.
- Issues and pull requests are monitored as a best effort.
- No active development will be performed by HashiCorp.
If you are interested in maintaining an unmaintained or archived plugin, please reach out to us at packer@hashicorp.com.