读取文件并将 output 保存到 local_file

Question

I'm trying to read the content of a file on an azurerm_linux_virtual_machine and save it to a local_file so that an ansible playbook can reference it later. Currently the.tf looks like this

resource "azurerm_linux_virtual_machine" "vm" {
name                  = myvm
location              = myzone
resource_group_name   = azurerm_resource_group.azureansibledemo.name
network_interface_ids = [azurerm_network_interface.myterraformnic.id]
size                  = "Standard_DS1_v2"

os_disk {
    name              = "storage"
    caching           = "ReadWrite"
    storage_account_type = "Premium_LRS"
}

source_image_reference {
    publisher = "Canonical"
    offer     = "UbuntuServer"
    sku       = "16.04-LTS"
    version   = "latest"
}

computer_name  = myvm
admin_username = "azureuser"
disable_password_authentication = true
custom_data = base64encode(file("telnet.sh"))

admin_ssh_key {
    username       = "azureuser"
    public_key     = tls_private_key.ansible_ssh_key.public_key_openssh
}

boot_diagnostics {
    storage_account_uri = azurerm_storage_account.mystorageaccount.primary_blob_endpoint
}


}

output "myoutput" {
    value = file("/tmp/output.yml")
}

resource "local_file" "testoutput" {
  content = <<-DOC
    ${file("/tmp/output.yml")}
    DOC
    filename = "test.yml"
}

But when i run terraform plan i get the following error

Error: Invalid function argument

  on main.tf line 181, in resource "local_file" "testoutput":
 181:     ${file("/tmp/output.yml")}

Invalid value for "path" parameter: no file exists at /tmp/output.yml; this
function works only with files that are distributed as part of the
configuration source code, so if this file will be created by a resource in
this configuration you must instead obtain this result from an attribute of
that resource.

The output myoutput is fine and returns no errors, this only occurs when i add in the resource local_file. Is there a way to get the output of a file to a local_file?

Answer 1

Copping remote files to local is not supported by TF.

The workaround is to use scp in local-exec as shown here . For example:

provisioner "local-exec" {
  command = "scp -o StrictHostKeyChecking=no -o UserKnownHostsFile=/dev/null -i ${var.openstack_keypair} ubuntu@${openstack_networking_floatingip_v2.wr_manager_fip.address}:~/client.token ."
}