terraform/website/source/docs/providers/random/r/pet.html.md

layout	page_title	sidebar_current	description
random	Random: random_pet	docs-random-resource-pet	Generates a random pet.

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 lenth (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.