Is there any way to scale up the application gateway v1 (Increase instances) automatically using powershell commands?

Question

Is there any way to scale up the application gateway v1 (Increase instances) automatically using powershell commands?

I attempted to use an Azure Automation Account with a PowerShell Runbook, but encountered errors. Additionally, the available articles and commands found online reference deprecated commands.

I need this functionality to downscale the application gateway instances during now working hours, and scale up during working hours.

Answer 1

@Rahul Kamble ,

Welcome to the Microsoft Q&A Platform. Thank you for reaching out & I hope you are doing well.

I believe the lack of documentations on this is because v1 is on it's way towards retirement and customers can no longer create v1 App gateways.

• See : Deprecation of Application Gateway V1

If possible, I would suggest you migrate to v2 for Production workloads.

With that said, if you are still interested in using v1 Gateway,

• May I ask if you used Set-AzApplicationGateway ?
  • What was the exact challenge/error message with this?
• From Get-AzApplicationGateway and Microsoft.Network/applicationGateways, I see the property should be "capacity" under SKU.
• Are you able to update the Number of instances using Portal?
  • Or does this fail too?
• You can validate the exact property using "Export Template" on the Resource Blade
  • Can you share what is the value of "capacity" in Export Template JSON File?
  • Is it correctly reflecting the number of instances on the App gateway?

Cheers,

Kapil

Answer 2

Hello Rahul Kamble,

Welcome to the Microsoft Q&A and thank you for posting your questions here.

I understand that you would like to know if there is any way to scale up the application gateway v1 (Increase instances) automatically using PowerShell commands.

Yes, you can automate scaling of Azure Application Gateway v1 (AGv1) using PowerShell, by creating a PowerShell Runbook in Azure Automation that adjusts the instance count by modifying the Sku.Capacity property of the Application Gateway. The script retrieves the Application Gateway configuration using Get-AzApplicationGateway, updates the instance count, and then applies the change with Set-AzApplicationGateway, - https://learn.microsoft.com/en-us/azure/application-gateway/application-gateway-autoscaling

Also, you can schedule this Runbook to scale up during working hours and scale down during non-working hours. You will need to make sure that your Automation Account is configured with the correct Az PowerShell modules and that the Runbook has sufficient permissions using a Run As Account or Managed Identity - https://learn.microsoft.com/en-us/powershell/module/az.network/?view=azps-10.11.0

I hope this is helpful! Do not hesitate to let me know if you have any other questions.

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