Question 103028 in Azure Question posted in
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Issue during update azure vmss trough rest api using curl

I’d like to change a VMSS capacity through API. On the Azure webpage there is a "Try it" button for check a request:
https://learn.microsoft.com/en-us/rest/api/compute/virtual-machine-scale-sets/update?tabs=HTTP#code-try-0

and my JSON is working fine from that link. But with curl I’ve got an answer:

"code":"UnsupportedResourceOperation","message":"The resource type ‘virtualMachineScaleSets’ does not support this operation."

My request looks like this:

curl -s -X PATCH 
  -H "Authorization: Bearer ${TOKEN}" 
  -H "Content-type: application/json" 
  -d @body.json 
  https://management.azure.com/subscriptions/${SUBSCRIPTION}/resourceGroups/${RG}/providers/Microsoft.Compute/virtualMachineScaleSets/${SCALE_SET_NAME}?api-version=2022-11-01

and the content of a body.json file is:

{
  "sku": {
  "tier": "Standard",
  "capacity": 1,
  "name": "Standard_B2s"
  }
}

The same json body is working fine on "Try it" so it may be something wrong with my curl request. I’m able to GET information using curl. Could you please show me where did I make a mistake?

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2

Answers


  1. Chosen as BEST ANSWER
    0

    My bad of course. The API version what I used in the example was 2022-11-01 instead of the latest 2023-03-01 and I used a SCALE_SET_NAME which was not defined on my host machine.


  2. 0

    I created an Azure AD Application and added API permissions like below:

    enter image description here

    Now, I generated auth-code using below authorize endpoint:

    https://login.microsoftonline.com/TenantID/oauth2/v2.0/authorize?
&client_id=ClientID
&response_type=code
&redirect_uri=https://jwt.ms
&response_mode=query
&scope=https://management.azure.com/.default
&state=12345

    enter image description here

    Now, I generated access token by using below parameters:

    https://login.microsoftonline.com/TenantID/oauth2/v2.0/token

client_id:ClientID
grant_type:authorization_code
scope:https://management.azure.com/.default
code:code
redirect_uri:https://jwt.ms
client_secret:ClientSecret

    enter image description here

    By using the above token, I am able to update the VMSS successfully like below:

    PATCH https://management.azure.com/subscriptions/SubID/resourceGroups/RGName/providers/Microsoft.Compute/virtualMachineScaleSets/vmss?api-version=2023-03-01

{
"sku": {
"tier": "Standard",
"capacity": 1,
"name": "Standard_B2s"
}
}

    enter image description here

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