crg support for machines

[Erin Borders (erinborders)]

🤖 PR Validation — ❌ Action needed

Breaking Changes
❌ 1

❌Azure CLI Extensions Breaking Change Test

❌aks-preview

rule	cmd_name	rule_message	suggest_message
❌ 1010 - ParaPropUpdate	aks machine add	cmd aks machine add update parameter spot_max_price: updated property default from nan to nan	please change property default from nan to nan for parameter spot_max_price of cmd aks machine add
⚠️ 1006 - ParaAdd	aks machine add	cmd aks machine add added parameter capacity_reservation_group

---

This checklist is used to make sure that common guidelines for a pull request are followed.

Related command

General Guidelines

• Have you run azdev style <YOUR_EXT> locally? (pip install azdev required)
• Have you run python scripts/ci/test_index.py -q locally? (pip install azdev required)
• My extension version conforms to the Extension version schema

For new extensions:

• My extension description/summary conforms to the Extension Summary Guidelines.

About Extension Publish

There is a pipeline to automatically build, upload and publish extension wheels.
Once your pull request is merged into main branch, a new pull request will be created to update src/index.json automatically.
You only need to update the version information in file setup.py and historical information in file HISTORY.rst in your PR but do not modify src/index.json.

[azure-client-tools-bot-prd]

Hi Erin Borders (@erinborders),
Please write the description of changes which can be perceived by customers into HISTORY.rst.
If you want to release a new extension version, please update the version in pyproject.toml (or setup.py, if the extension has not migrated yet) as well.

[Copilot]

Pull request overview

This PR adds preview support for associating an AKS machine with an Azure Capacity Reservation Group (CRG) via a new --crg-id argument on az aks machine add, wiring it through machine construction and documenting/testing the behavior in the aks-preview extension.

Changes:

• Add --crg-id (preview) to az aks machine add argument surface and help.
• Populate MachineProperties.capacity_reservation when crg_id is provided.
• Add unit tests covering set/omit behavior for regular machines and rejection for FlexNodes pools.

Reviewed changes

Copilot reviewed 6 out of 6 changed files in this pull request and generated no comments.

Show a summary per file

File	Description
src/aks-preview/HISTORY.rst	Notes the new preview --crg-id support for az aks machine add.
src/aks-preview/azext_aks_preview/tests/latest/test_custom.py	Adds unit tests for setting/omitting capacity reservation and validates FlexNodes rejection + argument surface.
src/aks-preview/azext_aks_preview/machine.py	Wires crg_id into constructed MachineProperties.capacity_reservation.
src/aks-preview/azext_aks_preview/custom.py	Adds crg_id parameter to aks_machine_add and passes through via raw_parameters.
src/aks-preview/azext_aks_preview/_params.py	Exposes crg_id on aks machine add with validate_crg_id and preview flag.
src/aks-preview/azext_aks_preview/_help.py	Documents --crg-id for aks machine add.

---

💡 Add a code-review agent skill or configure MCP servers for context-aware, tailored reviews. Learn more in the docs.

[microsoft-github-policy-service]

Thank you for your contribution Erin Borders (@erinborders)! We will review the pull request and get back to you soon.

[Yong Zhang (yonzhan)]

AKS

[FumingZhang]

Please resolve the failed linter check by adding a new entry to src/aks-preview/linter_exclusions.yml.

• FAIL - HIGH severity: option_length_too_long
  Parameter: aks machine add, capacity_reservation_group - The lengths of all options ['--capacity-reservation-group'] are longer than threshold 22. Argument capacity_reservation_group must have a short abbreviation.