Azure-rest-api-specs: Need Rest API to get the availability zones information on the basis of Object selected in a particular region

[hellosnow]

This is a question/issue transferred from https://github.com/MicrosoftDocs/feedback/issues/544, please help whether there's an answer for that.

Is your feature request related to a problem? Please describe.
It would be better if we can get the availability zones available in a particular region based on object selected.
Right now it is mentioned that only below regions support the availability zones:

Central US
France Central
East US 2 (Preview)
West Europe
Southeast Asia (Preview)

If we can get the information using Rest API that weather selected region supports the availability zone or not? If it does, how many zones are there.
Basically to get the supported availability zones based on region and selected resource.

For example:
While creating the VM using Portal, if we select the region as Central US which supports availability zones, it does enable the Availability Zone option in Portal UI.
And If user selects the Size as "Standard_DS3" which supports only Zone "3".

Similar support required from Rest API, is there a way we can get the supported list of Availability Zone(s) based on Region, Resource etc.

Describe the solution you'd like
Need a Get API call to get the list of Supported Availability Zones based on Region and Resource selected.

Describe alternatives you've considered
NA

Additional context
NA

[hellosnow]

@surajmuthreja to get update here.

[dsgouda]

@hellosnow Is there a particular resource (Compute/Network, etc) for which you'd like to get the AvailabilityZones?

[surajmuthreja]

@dsgouda Ideally I am looking for all the resources which will be there as part of VM/Instance creation on Azure.
E.g. We would need to provide this zone information for Public IP as well, instance size, region (wherever it is supported).

[dsgouda]

@hyonholee Would you be able to take a look at this or suggest someone who can?

[surajmuthreja]

Hi @hellosnow @dsgouda ,
Can we please have some update on this?

[dsgouda]

@surajmuthreja please contact @hyonholee directly, he handles the Compute SDKs

[surajmuthreja]

Thanks @dsgouda !
@hyonholee Can you please help here.

[surajmuthreja]

@hellosnow , @dsgouda , @hyonholee Any update on this request.

[hyonholee]

Currently, a user can use Get-AzComputeResourceSku to get the result. For example, the following will show zones for disks.

Get-AzComputeResourceSku | ? {$_.LocationInfo[0].Zones -ne $null -and $_.ResourceType -eq 'disks' }

But, the request is for more convenient API that shows zones based on input. We will discuss regarding the suggested API.

[danielestevez]

There is an API call to get this info
https://docs.microsoft.com/en-us/rest/api/compute/resourceskus/list
Returns a huge response that you can filter and look for the zones allowed per resorce or region
{ "resourceType": "disks", "name": "Premium_LRS", "tier": "Premium", "locations": [ "southeastasia" ], "locationInfo": [ { "location": "southeastasia", "zones": [ "3", "2", "1" ] } ], "restrictions": [] }, ...

    ` {
        "resourceType": "virtualMachines",
        "name": "Standard_F8",
        "tier": "Standard",
        "size": "F8",
        "family": "standardFFamily",
        "locations": [
            "eastus2"
        ],
        "locationInfo": [
            {
                "location": "eastus2",
                "zones": [
                    "1",
                    "2",
                    "3"
                ]
            }
        ],
        ...`

[surajmuthreja]

Thanks Daniel!

This is really huge response and needs filtration. But for the time being we can live with it I guess.

It will be more convenient if we can fulfill the original request also.
Thanks in advance!

Thanks,
Suraj Muthreja.

From: Daniel Estévez [e-mail]
Sent: Friday, December 21, 2018 3:33 AM
To: Azure/azure-rest-api-specs [e-mail]
Cc: Suraj Muthreja [e-mail]; Mention [e-mail]
Subject: Re: [Azure/azure-rest-api-specs] Need Rest API to get the availability zones information on the basis of Object selected in a particular region (#3594)

There is an API call to get this info
https://docs.microsoft.com/en-us/rest/api/compute/resourceskus/list
Returns a huge response that you can filter and look for the zones allowed per resorce or region
{ "resourceType": "disks", "name": "Premium_LRS", "tier": "Premium", "locations": [ "southeastasia" ], "locationInfo": [ { "location": "southeastasia", "zones": [ "3", "2", "1" ] } ], "restrictions": [] }, ...

` {

    "resourceType": "virtualMachines",

    "name": "Standard_F8",

    "tier": "Standard",

    "size": "F8",

    "family": "standardFFamily",

    "locations": [

        "eastus2"

    ],

    "locationInfo": [

        {

            "location": "eastus2",

            "zones": [

                "1",

                "2",

                "3"

            ]

        }

    ],

    ...`

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[Drewm3]

Cleaning up old issues from 2016 - 2018. Please reopen this issue if it is still a concern.

[surajmuthreja]

@Drewm3 -- This issue is still not fixed. Can you please reopen this and assigned to relevant team.
I could not reopen this issue.

[Drewm3]

@surajmuthreja , the SKUs API for VMs provides the zones where each VM size is available for any specific subscription. It seems like this was the original request which is resolved. Could you describe why you feel this is not resolved at this point?

[surajmuthreja]

@Drewm3 We are looking for APIs through which we should be able to get supported zones once user selects any Object.
Apart from VM size, there are other resources also where zone dependency is there. e.g. Public IP,

[Drewm3]

@surajmuthreja, as far as I know there is no API that will indicate if an arbitrary resource type and SKU is available in a specific zone. The reason for this is that most resources either support zones in a region or not. For example with managed disks or standard public IP addresses, they are supported in all zones if the region supports zones. This works for those resources because they are basically software constructs.

VM sizes are different because they are tied to physical hardware, and that physical hardware may not be available in all zones. So with VM sizes we need to have the specific API support to expose which zones support which sizes.

Please let me know if this answers your question, and if it does then I will close this issue.

[gek0]

hitting the same brick wall as @surajmuthreja
We are trying to deploy virtual machines (and every other related resource - disks, IPs) in an automated fashion and highly-available with the usage of Availability Zone.
I'm aware of Availability Sets but in this case, it's not enough - we are planning to use AS only if a region does not support AZ design.

So back to the problem -

• first we need to get an API response if the region/location supports AZ design or not
• if yes, we can expect 3 zones - well true for disks/public IPs but false for VM tiers

It would be great if there would be a simple API call that would take the following parameters (location, virtual machine tier) and return all available zones as an array

[msftbot[bot]]

Thanks for the feedback! We are routing this to the appropriate team for follow-up. cc @armleads-azure.

[Drewm3]

I have answered this question from the compute/VM case. We provide an API to determine exactly which VM SKUs are available in AZs in each region.

@armleads-azure, could you comment on the possibility of a generic API, possibly as part of list locations, which can indicate if the location supports AZs or not?

[richrundmsft]

I realize this thread has been open for a while, but I want to share how we handle this in the Azure portal for Networking resources (e.g. Public IP Addresses).

The portal makes a call to the Providers API.

GET /subscriptions/<subId>/providers/Microsoft.Network?api-version=2020-06-01

In the response body you can find zoneMappings which have the display name for the region and the valid availability zones. A sample (trimmed) response is below so you can see an example:

```json
{
"id": "/subscriptions//providers/Microsoft.Network",
"namespace": "Microsoft.Network",
"authorizations": [
... ],
"resourceTypes": [
{
...
"resourceType": "natGateways",
"locations": [
"West US",
... ],
"apiVersions": [
"2020-11-01",
... ],
"zoneMappings": [
{
"location": "East US 2",
"zones": [
"3",
"2",
"1"
]
},
{
"location": "Central US",
"zones": [
"3",
"2",
"1"
]
},
... ],
"capabilities": "CrossResourceGroupResourceMove, CrossSubscriptionResourceMove"
},
{