private subnet.tf

resource "azurerm_subnet" "DatabricksSubnetPrivate" {
  name                 = "VirtualNetwork PrivateSubnet Name"
  resource_group_name  = azurerm_resource_group.RG.name
  virtual_network_name = azurerm_virtual_network.DatabricksVnet.name
  address_prefixes     = ["VirtualNetwork PrivateSubnet CIDR"]

  delegation {
    name = "Microsoft.Databricks.workspaces"
    service_delegation {
      name = "Microsoft.Databricks/workspaces"
      actions = [
        "Microsoft.Network/virtualNetworks/subnets/join/action",
        "Microsoft.Network/virtualNetworks/subnets/prepareNetworkPolicies/action",
        "Microsoft.Network/virtualNetworks/subnets/unprepareNetworkPolicies/action"]
    }
  }
}