Run powershell command on Azure Windows via ARM template - windows

Question

I am trying to mount a data disk to a Windows Vm on Azure through an ARM template which is creating the VM. This is my ARM resource
{
"name": "[parameters('virtualMachineName')]",
"type": "Microsoft.Compute/virtualMachines",
"apiVersion": "2016-04-30-preview",
"location": "[parameters('location')]",
"dependsOn": [
"[concat('Microsoft.Network/networkInterfaces/', parameters('networkInterfaceName'))]"
],
"tags": {
"Busuness Group": "[parameters('busunessGroup')]",
"Role": "[parameters('role')]"
},
"properties": {
"osProfile": {
"computerName": "[parameters('virtualMachineName')]",
"adminUsername": "[parameters('adminUsername')]",
"adminPassword": "[parameters('adminPassword')]",
"windowsConfiguration": {
"provisionVmAgent": "true"
}
},
"hardwareProfile": {
"vmSize": "[parameters('virtualMachineSize')]"
},
"storageProfile": {
"imageReference": {
"publisher": "microsoft-ads",
"offer": "standard-data-science-vm",
"sku": "standard-data-science-vm",
"version": "latest"
},
"dataDisks": [
{
"lun": 0,
"createOption": "Empty",
"caching": "None",
"managedDisk": {
"storageAccountType": "Premium_LRS"
},
"diskSizeGB": "[parameters('dataDiskSizeGB')]",
}
]
},
"networkProfile": {
"networkInterfaces": [
{
"id": "[resourceId('Microsoft.Network/networkInterfaces', parameters('networkInterfaceName'))]"
}
]
}
},
"plan": {
"name": "standard-data-science-vm",
"publisher": "microsoft-ads",
"product": "standard-data-science-vm"
},
"resources": [
{
"type": "extensions",
"name": "CustomScriptExtension",
"apiVersion": "2015-06-15",
"location": "[resourceGroup().location]",
"dependsOn": [
"[parameters('virtualMachineName')]"
],
"properties": {
"publisher": "Microsoft.Compute",
"type": "CustomScriptExtension",
"typeHandlerVersion": "1.8",
"autoUpgradeMinorVersion": true,
"settings": {
"fileUris": ["https://paste.fedoraproject.org/paste/FMoOq4E3sKoQzqB5Di0DcV5M1UNdIGYhyRLivL9gydE=/raw"]
}
}
}
]
}
It failed with following error
{
"code": "VMExtensionProvisioningError",
"message": "VM has reported a failure when processing extension 'CustomScriptExtension'. Error message: \"Invalid Configuration - CommandToExecute is not specified in the configuration; it must be specified in either the protected or public configuration section\"."
}
I also tried passing the command directly
"settings": {
"commandToExecute": "Get-Disk |Where partitionstyle -eq ‘raw’ | Initialize-Disk -PartitionStyle MBR -PassThru | New-Partition -AssignDriveLetter -UseMaximumSize | Format-Volume -FileSystem NTFS -NewFileSystemLabel “Data” -Confirm:$false"
}
both didn't work. what I am doing wrong here ?

Answer 1

So, you need to explicitly call powershell to use powershell, just like in the examples:
"commandToExecute": "[concat('powershell -command ', variable('command'))]"
you can attempt to paste your command directly, but due to all the quotes it won't parse properly, so save your command as a variable and concat like that.