terraform-azurerm-set-diff-analyzer
Analyze Terraform plan JSON output for AzureRM Provider to distinguish between false-positive diffs (order-only changes in Set-type attributes) and actual resource changes. Use when reviewing terraform plan output for Azure resources like Application Gateway, Load Balancer, Firewall, Front Door, NSG, and other resources with Set-type attributes that cause spurious diffs due to internal ordering changes.
Best use case
terraform-azurerm-set-diff-analyzer is best used when you need a repeatable AI agent workflow instead of a one-off prompt.
Analyze Terraform plan JSON output for AzureRM Provider to distinguish between false-positive diffs (order-only changes in Set-type attributes) and actual resource changes. Use when reviewing terraform plan output for Azure resources like Application Gateway, Load Balancer, Firewall, Front Door, NSG, and other resources with Set-type attributes that cause spurious diffs due to internal ordering changes.
Teams using terraform-azurerm-set-diff-analyzer should expect a more consistent output, faster repeated execution, less prompt rewriting.
When to use this skill
- You want a reusable workflow that can be run more than once with consistent structure.
When not to use this skill
- You only need a quick one-off answer and do not need a reusable workflow.
- You cannot install or maintain the underlying files, dependencies, or repository context.
Installation
Claude Code / Cursor / Codex
Manual Installation
- Download SKILL.md from GitHub
- Place it in
.claude/skills/terraform-azurerm-set-diff-analyzer/SKILL.mdinside your project - Restart your AI agent — it will auto-discover the skill
How terraform-azurerm-set-diff-analyzer Compares
| Feature / Agent | terraform-azurerm-set-diff-analyzer | Standard Approach |
|---|---|---|
| Platform Support | Not specified | Limited / Varies |
| Context Awareness | High | Baseline |
| Installation Complexity | Unknown | N/A |
Frequently Asked Questions
What does this skill do?
Analyze Terraform plan JSON output for AzureRM Provider to distinguish between false-positive diffs (order-only changes in Set-type attributes) and actual resource changes. Use when reviewing terraform plan output for Azure resources like Application Gateway, Load Balancer, Firewall, Front Door, NSG, and other resources with Set-type attributes that cause spurious diffs due to internal ordering changes.
Where can I find the source code?
You can find the source code on GitHub using the link provided at the top of the page.
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SKILL.md Source
# Terraform AzureRM Set Diff Analyzer A skill to identify "false-positive diffs" in Terraform plans caused by AzureRM Provider's Set-type attributes and distinguish them from actual changes. ## When to Use - `terraform plan` shows many changes, but you only added/removed a single element - Application Gateway, Load Balancer, NSG, etc. show "all elements changed" - You want to automatically filter false-positive diffs in CI/CD ## Background Terraform's Set type compares by position rather than by key, so when adding or removing elements, all elements appear as "changed". This is a general Terraform issue, but it's particularly noticeable with AzureRM resources that heavily use Set-type attributes like Application Gateway, Load Balancer, and NSG. These "false-positive diffs" don't actually affect the resources, but they make reviewing terraform plan output difficult. ## Prerequisites - Python 3.8+ If Python is unavailable, install via your package manager (e.g., `apt install python3`, `brew install python3`) or from [python.org](https://www.python.org/downloads/). ## Basic Usage ```bash # 1. Generate plan JSON output terraform plan -out=plan.tfplan terraform show -json plan.tfplan > plan.json # 2. Analyze python scripts/analyze_plan.py plan.json ``` ## Troubleshooting - **`python: command not found`**: Use `python3` instead, or install Python - **`ModuleNotFoundError`**: Script uses only standard library; ensure Python 3.8+ ## Detailed Documentation - [scripts/README.md](scripts/README.md) - All options, output formats, exit codes, CI/CD examples - [references/azurerm_set_attributes.md](references/azurerm_set_attributes.md) - Supported resources and attributes
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