Azure Policies Repository

This repository stores and manages Azure Policy definitions for controlling resource deployments across your Azure environment. The policies are applied automatically using GitHub Actions workflows.

Repository Structure

• policies/: Contains Azure Policy definition files in JSON format.
• .github/workflows/: Contains GitHub Actions workflows for applying policies.

Adding New Policies

1. Create a new JSON file in the policies/ directory.
2. Define your policy rules in the JSON file.
3. Commit and push your changes to the main branch.

The GitHub Actions workflow will automatically create and assign the new policy upon each push to the main branch.

Policy JSON Format

Each policy JSON file should follow the Azure Policy definition schema. Here’s a basic example of a policy definition:

{
  "properties": {
    "displayName": "Policy Display Name",
    "description": "Description of what this policy does.",
    "policyRule": {
      "if": {
        "field": "someField",
        "equals": "someValue"
      },
      "then": {
        "effect": "deny"
      }
    },
    "metadata": {
      "version": "1.0.0",
      "category": "General"
    }
  }
}
Example Policies
Deny Virtual Machine Deployments
This policy denies the creation of any virtual machines:

json
Copy code
{
  "properties": {
    "displayName": "Deny Virtual Machine Deployments",
    "description": "This policy denies the creation of any virtual machines.",
    "policyRule": {
      "if": {
        "field": "type",
        "equals": "Microsoft.Compute/virtualMachines"
      },
      "then": {
        "effect": "deny"
      }
    },
    "metadata": {
      "version": "1.0.0",
      "category": "Compute"
    }
  }
}

GitHub Actions Workflow
The workflow defined in .github/workflows/apply-policies.yml will:

Checkout the repository.
Login to Azure using credentials stored in GitHub Secrets.
Create and assign policies defined in the policies/ directory.
GitHub Secrets
Ensure the following secrets are configured in your GitHub repository settings:

AZURE_CREDENTIALS: JSON credentials for Azure Service Principal.
AZURE_SUBSCRIPTION_ID: Your Azure Subscription ID.
Contributing
To contribute to this repository, follow these steps:

Fork the repository.
Create a new branch.
Add or modify policy JSON files.
Create a pull request describing your changes.
License
This repository is licensed under the MIT License.

markdown
Copy code

### Key Sections in the README.md:

- **Overview**: A brief description of the repository and its purpose.
- **Repository Structure**: Explains the organization of files in the repository.
- **Adding New Policies**: Instructions for adding and applying new policies.
- **Policy JSON Format**: A template for creating policy definitions.
- **Example Policies**: Provides a specific example of a policy, in this case, one that denies VM deployments.
- **GitHub Actions Workflow**: Details on what the GitHub Actions workflow does.
- **GitHub Secrets**: Information on required secrets for the workflow.
- **Contributing**: Guidelines for contributing to the repository.
- **License**: Licensing information.