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Validate infrastructure as code (IaC) and objects using PowerShell rules.

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PSRule

A cross-platform module to validate infrastructure as code (IaC) and objects using PowerShell rules. PSRule works great and integrates with popular continuous integration (CI) systems.

Open in vscode.dev

Features of PSRule include:

  • DevOps - Built to support DevOps culture and tools.
  • Extensible - Define tests using YAML, JSON, or PowerShell format.
  • Reusable - Reuse and share rules across teams or organizations.

Project objectives

  1. Extensible:
    • Provide an execution environment (tools and language) to validate infrastructure code.
    • Handling of common concerns such as input/ output/ reporting should be handled by the engine.
    • Language must be flexible enough to support a wide range of use cases.
  2. DevOps:
    • Validation should support and enhance DevOps workflows by providing fast feedback in pull requests.
    • Allow quality gates to be implemented between environments such development, test, and production.
  3. Cross-platform:
    • A wide range of platforms can be used to author and deploy infrastructure code. PSRule must support rule validation and authoring on Linux, MacOS, and Windows.
    • Runs in a Linux container. For continuous integration (CI) systems that do not support PowerShell, run in a container.
  4. Reusable:
    • Validation should plug and play, reusable across teams and organizations.
    • Any reusable validation will have exceptions. Rules must be able to be disabled where they are not applicable.

Continue reading the PSRule design specification.

Support

This project uses GitHub Issues to track bugs and feature requests. Please search the existing issues before filing new issues to avoid duplicates.

  • For new issues, file your bug or feature request as a new issue.
  • For help, discussion, and support questions about using this project, join or start a discussion.

Support for this project/ product is limited to the resources listed above.

Getting the module

You can download and install the PSRule module from the PowerShell Gallery.

Module Description Downloads / instructions
PSRule Validate infrastructure as code (IaC) and objects using PowerShell rules. latest / instructions

For rule and integration modules see related projects.

Getting extensions

Companion extensions are available for the following platforms.

Platform Description Downloads / instructions
Azure Pipelines Validate infrastructure as code (IaC) and DevOps repositories using Azure Pipelines. latest / instructions
GitHub Actions Validate infrastructure as code (IaC) and DevOps repositories using GitHub Actions. latest / instructions
Visual Studio Code Visual Studio Code extension for PSRule. latest / instructions

Getting started

For an quickstart example of using PSRule see Create a standalone rule. For specific use cases see scenarios.

For frequently asked questions, see the FAQ.

Scenarios

For walk through examples of PSRule usage see:

Language reference

PSRule extends PowerShell with domain specific language (DSL) keywords, cmdlets and automatic variables.

Keywords

The following language keywords are used by the PSRule module:

  • Rule - A rule definition.
  • Exists - Assert that a field or property must exist.
  • Match - Assert that the field must match any of the regular expressions.
  • AnyOf - Assert that any of the child expressions must be true.
  • AllOf - Assert that all of the child expressions must be true.
  • Within - Assert that the field must match any of the values.
  • TypeOf - Assert that the object must be of a specific type.
  • Reason - Return a reason for why the rule failed.
  • Recommend - Return a recommendation to resolve the issue and pass the rule.

Commands

The following commands exist in the PSRule module:

Concepts

The following conceptual topics exist in the PSRule module:

Schemas

PSRule uses the following schemas:

  • Options - Schema for PSRule YAML options file.
  • Language - Schema for PSRule resources such as baselines.
  • Resources - Schema for PSRule resources documents used with JSON.

Related projects

For a list of projects and integrations see Related projects.

Changes and versioning

Modules in this repository use semantic versioning to declare breaking changes. For a list of module changes please see the change log.

Pre-release module versions are created on major commits and can be installed from the PowerShell Gallery. Pre-release versions should be considered experimental. Modules and change log details for pre-releases will be removed as stable releases are made available.

Contributing

This project welcomes contributions and suggestions. If you are ready to contribute, please visit the contribution guide.

Code of Conduct

This project has adopted the Microsoft Open Source Code of Conduct. For more information see the Code of Conduct FAQ or contact [email protected] with any additional questions or comments.

Maintainers

License

This project is licensed under the MIT License.

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