Azure Naming

---
name: azure-naming
description: >-
  Use when editing Terraform that creates or changes Azure resource names, naming inputs, or
  required tags.
paths:
  - terraform/**/*.tf
  - terraform/**/*.tf.example
  - terraform/**/*.tfvars.example
user-invocable: false
---

<!-- Generated from harness/github-copilot/plugins/open-horizons-platform/instructions/azure-naming.instructions.md by harness/claude-code/scripts/convert_from_copilot.py. Edit the source, not this file. -->

# Azure Resource Naming

`terraform/modules/naming/` is the authoritative local naming implementation. Use its inputs and outputs instead of recreating CAF abbreviations or ad hoc prefixes in consuming modules.

## Conventions

- Derive supported resource names from the naming module and keep the pattern `{resource-type}-{project}-{environment}-{region}-{instance}` where the service permits it.
- Use the module's hyphen-free and shortened outputs for globally unique or length-restricted resources such as storage accounts, registries, and Key Vault.
- Keep project, environment, location, instance, owner, and cost-center as explicit inputs; do not encode customer or personal data in names.
- Preserve the module's canonical tags: `environment`, `project`, `owner`, and `cost-center`; merge additional tags without replacing them.
- Validate service-specific length, character, start/end, and uniqueness constraints in the naming module rather than scattering truncation logic across callers.
- Treat changes to region codes, abbreviations, truncation, or output names as compatibility changes because environments consume those outputs.
- Document unavoidable legacy names or adoption exceptions in the owning environment without silently renaming live resources.

## Verification

- New Azure resources consume a suitable `module.naming` output or record a justified exception.
- Naming-module changes cover restricted-character, maximum-length, and deterministic-output cases.
- Examples contain sanitized values and match the current module interface.

## Do / Do Not

| Do | Do not |
| --- | --- |
| Follow the naming module and execute the verification checks above. | Rename live resources implicitly or report an unrun check as passed. |
| Document legacy exceptions in the owning environment. | Encode tenant data, credentials, or mutable values in names. |

## Checklist Before Opening a PR

- [ ] The change matches this instruction's `applyTo` scope.
- [ ] Naming-module outputs and documented exceptions cover every new resource.
- [ ] Character, length, uniqueness, and stable-output cases are tested.
- [ ] Examples are sanitized and match the current module interface.
- [ ] No unrelated edits or unresolved placeholders remain.