» random_pet

The resource random_pet generates random pet names that are intended to be used as unique identifiers for other resources.

This resource can be used in conjunction with resources that have the create_before_destroy lifecycle flag set, to avoid conflicts with unique names during the brief period where both the old and new resources exist concurrently.

» Example Usage

The following example shows how to generate a unique pet name for an AWS EC2 instance that changes each time a new AMI id is selected.

resource "random_pet" "server" {
  keepers = {
    # Generate a new pet name each time we switch to a new AMI id
    ami_id = "${var.ami_id}"

resource "aws_instance" "server" {
  tags = {
    Name = "web-server-${random_pet.server.id}"

  # Read the AMI id "through" the random_pet resource to ensure that
  # both will change together.
  ami = "${random_pet.server.keepers.ami_id}"

  # ... (other aws_instance arguments) ...

The result of the above will set the Name of the AWS Instance to web-server-simple-snake.

» Argument Reference

The following arguments are supported:

  • keepers - (Optional) Arbitrary map of values that, when changed, will trigger a new id to be generated. See the main provider documentation for more information.

  • length - (Optional) The length (in words) of the pet name.

  • prefix - (Optional) A string to prefix the name with.

  • separator - (Optional) The character to separate words in the pet name.

» Attribute Reference

The following attributes are supported:

  • id - (string) The random pet name