Add "--enable-auto-repairs" to az vmss create

[hilaryw29]

Preconditions

• No need to upgrade Python SDK or the Python SDK is ready.

Related command

az vmss create

Resource Provider

Microsoft.Compute/VMSS

Description of Feature or Work Requested

The work requested is around Automatic Instance Repairs feature. The main ask is to support “--enable-automatic-repairs” command on az vmss create.

Additional Context:
“--enable-automatic-repairs” command today is available only in az vmss update, but not in az vmss create. This is interesting because other commands associated with Instance Repairs like “--automatic-repairs-action” and “--automatic-repairs-grace-period” exists in az vmss create. My assumption is that today, without “--enable-automatic-repairs” in az vmss create, Automatic Instance Repairs will be implicitly enabled if customer specifies “--automatic-repairs-action” or “--automatic-repairs-grace-period” in az vmss create.

However, we have a new feature coming up (Auto AZ Balance) that will bundle Automatic Instance Repairs when customers turn on Auto AZ Balance. This means that, when customers turn on Auto AZ Balance, platform will automatically turn on Automatic Instance Repairs on their scale set. However, we want to ensure that customers have the option to opt-out of Automatic Instance Repairs while still keeping Auto AZ balance. So customers will need to have ability to specify az vmss create --enable-automatic-repairs false when creating a VMSS.

• Note: We don't need CLI to turn on Auto Instance Repairs when Auto AZ Balance is enabled. This bundling will be applied automatically from the platform side.

Had a separate sync with @zhoxing-ms May 30th to go over this scenario, and the desired behaviour.

Minimum API Version Required

2021-11-01

Swagger PR link / SDK link

https://github.com/Azure/azure-rest-api-specs/blob/main/specification/compute/resource-manager/Microsoft.Compute/ComputeRP/stable/2021-11-01/compute.json

Request Example

Desired behavior (with --enable-auto-repairs on az vmss create):

[NEW] az vmss create --enable-auto-repairs true

[NEW] az vmss create ---enable-automatic-zone-balancing true \ --enable-auto-repairs false

Target Date

2025-06-30

PM Contact

hilarywang

Engineer Contact

raredd

Additional context

No response

[yonzhan]

Thank you for opening this issue, we will look into it.

[github-actions]

Here are some similar issues that might help you. Please check if they can solve your problem.

• VMSS automatic instance repair #12319
• Add RepairAction property to AutomaticRepairsPolicy for 'az vmss create' and 'az vmss update' #20139

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Possible solution (Extracted from existing issue, might be incorrect; please verify carefully)

Solution 1:

We will plan to release it on 12-07.

Reference:

• Add RepairAction property to AutomaticRepairsPolicy for 'az vmss create' and 'az vmss update' #20139 (comment)

Solution 2:

For the release of Python SDK, you can ask for help.

Reference:

• Add RepairAction property to AutomaticRepairsPolicy for 'az vmss create' and 'az vmss update' #20139 (comment)

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