Lab 06 -Another issue with cores in VM

Question

Lab 06 -Another issue with cores in VM

marouf 145

Hello,

In this lab 06,

https://microsoftlearning.github.io/AZ-104-MicrosoftAzureAdministrator/Instructions/Labs/LAB_06-Implement_Network_Traffic_Management.html

when I am trying to build a custom template, I can't because for all the VMs, Nics and a NSG, it says that 'cores exceeded' as it has 11 resources.

Error description:

{
  "code": "InvalidTemplateDeployment",
  "details": [
    {
      "code": "QuotaExceeded",
      "message": "Operation could not be completed as it results in exceeding approved Total Regional Cores quota. Additional details - Deployment Model: Resource Manager, Location: eastus, Current Limit: 4, Current Usage: 0, Additional Required: 6, (Minimum) New Limit Required: 6. Setup Alerts when Quota reaches threshold. Learn more at https://aka.ms/quotamonitoringalerting . Submit a request for Quota increase at https://aka.ms/ProdportalCRP/#blade/Microsoft_Azure_Capacity/UsageAndQuota.ReactView/Parameters/%7B%22subscriptionId%22:%22735993e7-97c6-4771-9bbd-37da1dcd6de9%22,%22command%22:%22openQuotaApprovalBlade%22,%22quotas%22:[%7B%22location%22:%22eastus%22,%22providerId%22:%22Microsoft.Compute%22,%22resourceName%22:%22cores%22,%22quotaRequest%22:%7B%22properties%22:%7B%22limit%22:6,%22unit%22:%22Count%22,%22name%22:%7B%22value%22:%22cores%22%7D%7D%7D%7D]%7D by specifying parameters listed in the ‘Details’ section for deployment to succeed. Please read more about quota limits at https://docs.microsoft.com/en-us/azure/azure-supportability/regional-quota-requests"
    }
  ],
  "message": "The template deployment 'Microsoft.Template-20250505174739' is not valid according to the validation procedure. The tracking id is '0e4a75e6-a5a9-4848-ae2f-37144eff69aa'. See inner errors for details."
}

I tried to request for an increase in the quotas, but because it's my free subscription, it's not allowing to upgrade or make a request. I tried to cut down the VMs from the template / parameters, but then I realized that it will have a knock-on effect on the rest of the JSON code.

Kindly, please assist.

Best

Marouf

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Answer 1

VarunTha 15,095 Microsoft External Staff Moderator

Hi marouf,

We understand that you are encountering a limitation with your current subscription, which allows for a maximum of 4 cores in the East US region. The error message indicates that your deployment attempts to exceed this limit, resulting in the failure of the template deployment.

Here are some suggestions to help you resolve this issue:

1.Reduce Resource Count:

Since you are on a free subscription and unable to request a quota increase, consider modifying your template to deploy fewer virtual machines (VMs) or reducing the number of cores per VM. This adjustment will help you stay within the allowed limits.

2.Select Available VM Sizes:

As mentioned in the exercise, if you receive an error indicating that the VM size is unavailable, please ensure you select a SKU that is available in your subscription and has at least 2 cores. This will help you avoid further deployment issues.

3.Check Current Quotas:

You can use the Azure CLI to check your current quotas and available VM sizes. The following command will list the available VM sizes in the East US region:
```
  
  az vm list-skus --location eastus --size Standard_D
```

This command will provide you with a list of VM sizes and their respective core counts, allowing you to choose sizes that fit within your quota.

4.Free Trial Limitations:

While the free trial provides access to a wide range of Azure resources, it does come with certain limitations, including quotas on the number of cores and other resources. If you find that you need more resources than the free trial allows, you can consider upgrading to a Pay-As-You-Go subscription, which offers greater flexibility and higher resource limits.

If you have any further questions or need additional assistance, please feel free to reach out. We're here to help!

If you have found the answer provided to be helpful, please click on the "Accept answer/Upvote" button so that it is useful for other members in the Microsoft Q&A community.

VarunTha 15,095 Reputation points Microsoft External Staff Moderator

2025-05-06T09:44:46.0933333+00:00

Hi marouf,
We're delighted to hear that your issue has been resolved. If you encounter any further challenges, please don't hesitate to get in touch with us, and we'll be more than happy to provide additional assistance.

Thank you.
marouf 145 Reputation points

2025-05-06T21:53:02.7266667+00:00

Hello,

How can I find out the number of cores with the command:

az vm list-skus --location eastus --size Standard_D

If I want to modify the JSON file, how should I do it?

az104-06-vms-template-new.txt

Thank you
VarunTha 15,095 Reputation points Microsoft External Staff Moderator

2025-05-08T08:06:29.37+00:00
Hi marouf,
If you want to modify the JSON file to reduce the number of VMs or adjust the core count, follow these steps:

Open the JSON File: Use a text editor or an IDE to open the az104-06-vms-template.json file.

Locate the VM Definitions: Find the section in the JSON where the virtual machines are defined. It typically looks like this:
{ "type": "Microsoft.Compute/virtualMachines", ...

Adjust the VM Count: If you have multiple VM definitions, you can either comment out or remove some of them to reduce the total count. Ensure that the total number of cores does not exceed your quota.

Change VM Size: If you need to change the VM size to one that has fewer cores, modify the vmSize property to a smaller SKU that fits within your quota.

Save the Changes: After making the necessary adjustments, save the JSON file.

Deploy the Template: Go back to the Azure portal and redeploy the modified template.
marouf 145 Reputation points

2025-05-08T11:36:28.1533333+00:00

Hello

Thanks for your help. Can you please explain more on this - how to reduce the cores and Vmsize property?

Thanks
VarunTha 15,095 Reputation points Microsoft External Staff Moderator

2025-05-08T17:09:55.9+00:00
Hi marouf,
Here’s a detailed explanation on how to reduce the cores and modify the vmSize property in your JSON template:

1. Understanding VM Sizes and Cores:

Each VM size in Azure has a specific number of cores associated with it. For example, the Standard_D2s_v3 size typically has 2 vCPUs (virtual CPUs).

To find out the available VM sizes and their core counts, you can use the following Azure CLI command:

az vm list-skus --location eastus --size Standard_D

This command will list the VM sizes available in the East US region along with their core counts, allowing you to choose a size that fits within your quota.

2. Modifying the JSON Template:

Open the JSON File: Use a text editor or an IDE to open your az104-06-vms-template.json file.

Locate the VM Definitions: Find the section in the JSON where the virtual machines are defined. It typically looks like this:

{ "type": "Microsoft.Compute/virtualMachines", ... }

Adjust the VM Count:

If you have multiple VM definitions (like vm0, vm1, vm2), you can either comment out or remove some of them to reduce the total count. For example, if you want to keep only one VM, you can remove the definitions for vm1 and vm2.

Change VM Size:

To change the VM size to one that has fewer cores, modify the vmSize property. For example, if you want to change from Standard_D2s_v3 to Standard_B1s (which has 1 vCPU), you would update it like this:

"hardwareProfile": { "vmSize": "Standard_B1s" }

Save the Changes: After making the necessary adjustments, save the JSON file.

3. Redeploy the Template:

Go back to the Azure portal and redeploy the modified template. This should help you stay within your core quota.