self-hosted-runners: make Azure region configurable

This makes it easier to configure the Azure VM region. Let's default to
"westus2" while we're at it, as it's one of the cheaper options
available at the time of writing.

Signed-off-by: Dennis Ameling <[email protected]>
Signed-off-by: Johannes Schindelin <[email protected]>

Author: dennisameling

.github/workflows/create-azure-self-hosted-runners.yml

@@ -40,6 +40,10 @@ env:
   # Note that you'll need "p" (arm64 processor) and ideally "d" (local temp disk). The number 8 stands for 8 CPU-cores.
   # For a convenient overview of all arm64 VM types, see e.g. https://azureprice.net/?_cpuArchitecture=Arm64
   AZURE_VM_TYPE: Standard_D8plds_v5
+  # At the time of writing, "eastus", "eastus2" and "westus2" were among the cheapest region for the VM type we're using.
+  # For more information, see https://learn.microsoft.com/en-us/azure/virtual-machines/dplsv5-dpldsv5-series (which
+  # unfortunately does not have more information about price by region)
+  AZURE_VM_REGION: westus2
 
 # The following secrets are required for this workflow to run:
 # AZURE_CREDENTIALS - Credentials for the Azure CLI. It's recommended to set up a resource
@@ -153,7 +157,7 @@ jobs:
       with:
         resourceGroupName: ${{ secrets.AZURE_RESOURCE_GROUP }}
         template: ./azure-self-hosted-runners/azure-arm-template.json
-        parameters: ./azure-self-hosted-runners/azure-arm-template-example-parameters.json githubActionsRunnerRegistrationUrl="${{ env.ACTIONS_RUNNER_REGISTRATION_URL }}" githubActionsRunnerToken="${{ env.ACTIONS_RUNNER_TOKEN }}" postDeploymentPsScriptUrl="${{ env.POST_DEPLOYMENT_SCRIPT_URL }}" virtualMachineName=${{ steps.generate-vm-name.outputs.vm_name }} virtualMachineSize="${{ env.AZURE_VM_TYPE }}" publicIpAddressName1=${{ steps.generate-vm-name.outputs.vm_name }}-ip adminUsername=${{ secrets.AZURE_VM_USERNAME }} adminPassword=${{ secrets.AZURE_VM_PASSWORD }} stopService=${{ env.DEALLOCATE_IMMEDIATELY }} githubActionsRunnerPath="${{ env.ACTIONS_RUNNER_PATH }}"
+        parameters: ./azure-self-hosted-runners/azure-arm-template-example-parameters.json githubActionsRunnerRegistrationUrl="${{ env.ACTIONS_RUNNER_REGISTRATION_URL }}" githubActionsRunnerToken="${{ env.ACTIONS_RUNNER_TOKEN }}" postDeploymentPsScriptUrl="${{ env.POST_DEPLOYMENT_SCRIPT_URL }}" virtualMachineName=${{ steps.generate-vm-name.outputs.vm_name }} virtualMachineSize="${{ env.AZURE_VM_TYPE }}" publicIpAddressName1=${{ steps.generate-vm-name.outputs.vm_name }}-ip adminUsername=${{ secrets.AZURE_VM_USERNAME }} adminPassword=${{ secrets.AZURE_VM_PASSWORD }} stopService=${{ env.DEALLOCATE_IMMEDIATELY }} githubActionsRunnerPath="${{ env.ACTIONS_RUNNER_PATH }}" location="${{ env.AZURE_VM_REGION }}"
 
     - name: Deallocate the VM for later use
       if: env.DEALLOCATE_IMMEDIATELY == 'true'

azure-self-hosted-runners/azure-arm-template-example-parameters.json

@@ -2,9 +2,6 @@
     "$schema": "https://schema.management.azure.com/schemas/2015-01-01/deploymentParameters.json#",
     "contentVersion": "1.0.0.0",
     "parameters": {
-        "location": {
-            "value": "westeurope"
-        },
         "enableAcceleratedNetworking": {
             "value": true
         },