How do I initiate Azure Site Recovery failover using Terraform?

Question

I have used Terraform to provision VMs, network and storage as well as set up Azure Site Recovery. Ideally, I could use Terraform to trigger failover also. So far, I've been unable to find any documentation related to triggering failover with Terraform. Is that possible?

Answer 1

Hi Glenn Horton,

Welcome to Microsoft Q&A Forum, thank you for posting your query here!

You can achieve this by using the below functionality

Terraform does not have a dedicated resource type like azurerm_site_recovery_failover for initiating a failover in Azure Site Recovery (ASR). However, you can still achieve this functionality within your Terraform workflow by using a null resource combined with an Azure PowerShell script, this will work.

PowerShell script reference below link:

https://docs.azure.cn/en-us/site-recovery/azure-to-azure-powershell#fail-over-to-azure

Terraform Code by using a null resource

resource "null_resource" "run_powershell_script" {
  provisioner "local-exec" {
    command = "powershell.exe -ExecutionPolicy Bypass -File ./script.ps1"
  }
}

Feel free to reach out if you have any further questions or need additional information—I’m happy to assist!

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