Terraform default script path - terraform

Question

I am creating multiple VMs in Azure using cloud-init, they are created in parallel and when any of them fails, I can see in the logs:
Error: error executing "/tmp/terraform_876543210.sh": Process exited with status 1
But I have no way to figure out which VM is failing, I need to ssh each of them and check
The script path seems to be defined for provisioning Terraform
Is there a way to override it also for cloud-init to something like: /tmp/terraform_vmName_876543210.sh ?
I am not using provisioner but cloud-init, any idea how I can force terraform to override the terraform sh file?
Below my script:
resource "azurerm_linux_virtual_machine" "example" {
name = "example-machine"
resource_group_name = azurerm_resource_group.example.name
location = azurerm_resource_group.example.location
size = "Standard_F2"
admin_username = "adminuser"
network_interface_ids = [
azurerm_network_interface.example.id,
]
admin_ssh_key {
username = "adminuser"
public_key = file("~/.ssh/id_rsa.pub")
}
os_disk {
caching = "ReadWrite"
storage_account_type = "Standard_LRS"
}
source_image_reference {
publisher = "Canonical"
offer = "UbuntuServer"
sku = "16.04-LTS"
version = "latest"
}
custom_data = base64encode(templatefile(
"my-cloud-init.tmpl", {
var1 = "value1"
var2 = "value2"
})
)
}
And my cloud-init script:
## template: jinja
#cloud-config
runcmd:
- sudo /tmp/bootstrap.sh
write_files:
- path: /tmp/bootstrap.sh
permissions: 00700
content: |
#!/bin/sh -e
echo hello

Answer 1

From the code you found for the Terraform, it shows:
DefaultUnixScriptPath is used as the path to copy the file to for
remote execution on Unix if not provided otherwise.
It's the configuration for the remote execution. And for the remote execution of the SSH, you can set the source and the destination for the copy file in the provisioner "file".
But it's used to set the path in the remote VM, not the local machine that you execute the Terraform. And you can overwrite the file name like this:
provisioner "file" {
source = "conf/myapp.conf"
destination = "/etc/terraform_$(var.vmName).conf"
...
}