How To deploy Azure Bastion to the AzureBastionSubnet loaded as a data source

To deploy Azure Bastion to the AzureBastionSubnet loaded as a data source, we'll first add a data source to reference an existing subnet and then create the Azure Bastion resource using the azurerm_bastion_host resource. Here's the code:

# Add this data source block to reference the existing AzureBastionSubnet
data "azurerm_subnet" "example" {
  name                 = "AzureBastionSubnet"
  virtual_network_name = "your-vnet-name"
  resource_group_name  = "your-resource-group-name"
}

resource "azurerm_public_ip" "bastion" {
  name                = "example-bastion-publicip"
  location            = azurerm_resource_group.example.location
  resource_group_name = azurerm_resource_group.example.name
  allocation_method   = "Static"
  sku                 = "Standard"
}

resource "azurerm_bastion_host" "example" {
  name                = "example-bastion"
  location            = azurerm_resource_group.example.location
  resource_group_name = azurerm_resource_group.example.name

  ip_configuration {
    name                 = "configuration"
    subnet_id            = data.azurerm_subnet.example.id
    public_ip_address_id = azurerm_public_ip.bastion.id
  }
}