» aws_spot_fleet_request

Provides an EC2 Spot Fleet Request resource. This allows a fleet of Spot instances to be requested on the Spot market.

» Example Usage

# Request a Spot fleet
resource "aws_spot_fleet_request" "cheap_compute" {
  iam_fleet_role      = "arn:aws:iam::12345678:role/spot-fleet"
  spot_price          = "0.03"
  allocation_strategy = "diversified"
  target_capacity     = 6
  valid_until         = "2019-11-04T20:44:20Z"

  launch_specification {
    instance_type            = "m4.10xlarge"
    ami                      = "ami-1234"
    spot_price               = "2.793"
    placement_tenancy        = "dedicated"
    iam_instance_profile_arn = "${aws_iam_instance_profile.example.arn}"

  launch_specification {
    instance_type            = "m4.4xlarge"
    ami                      = "ami-5678"
    key_name                 = "my-key"
    spot_price               = "1.117"
    iam_instance_profile_arn = "${aws_iam_instance_profile.example.arn}"
    availability_zone        = "us-west-1a"
    subnet_id                = "subnet-1234"
    weighted_capacity        = 35

    root_block_device {
      volume_size = "300"
      volume_type = "gp2"

  tags = {
      Name = "spot-fleet-example"
resource "aws_spot_fleet_request" "foo" {
  iam_fleet_role  = "arn:aws:iam::12345678:role/spot-fleet"
  spot_price      = "0.005"
  target_capacity = 2
  valid_until     = "2019-11-04T20:44:20Z"

  launch_specification {
    instance_type     = "m1.small"
    ami               = "ami-d06a90b0"
    key_name          = "my-key"
    availability_zone = "us-west-2a"

  launch_specification {
    instance_type     = "m5.large"
    ami               = "ami-d06a90b0"
    key_name          = "my-key"
    availability_zone = "us-west-2a"

  depends_on = ["aws_iam_policy_attachment.test-attach"]

» Argument Reference

Most of these arguments directly correspond to the official API.

  • iam_fleet_role - (Required) Grants the Spot fleet permission to terminate Spot instances on your behalf when you cancel its Spot fleet request using CancelSpotFleetRequests or when the Spot fleet request expires, if you set terminateInstancesWithExpiration.
  • replace_unhealthy_instances - (Optional) Indicates whether Spot fleet should replace unhealthy instances. Default false.
  • launch_specification - Used to define the launch configuration of the spot-fleet request. Can be specified multiple times to define different bids across different markets and instance types.

    Note: This takes in similar but not identical inputs as aws_instance. There are limitations on what you can specify. See the list of officially supported inputs in the reference documentation. Any normal aws_instance parameter that corresponds to those inputs may be used and it have a additional parameter iam_instance_profile_arn takes aws_iam_instance_profile attribute arn as input.

  • spot_price - (Optional; Default: On-demand price) The maximum bid price per unit hour.

  • wait_for_fulfillment - (Optional; Default: false) If set, Terraform will wait for the Spot Request to be fulfilled, and will throw an error if the timeout of 10m is reached.

  • target_capacity - The number of units to request. You can choose to set the target capacity in terms of instances or a performance characteristic that is important to your application workload, such as vCPUs, memory, or I/O.

  • allocation_strategy - Indicates how to allocate the target capacity across the Spot pools specified by the Spot fleet request. The default is lowestPrice.

  • instance_pools_to_use_count - (Optional; Default: 1) The number of Spot pools across which to allocate your target Spot capacity. Valid only when allocation_strategy is set to lowestPrice. Spot Fleet selects the cheapest Spot pools and evenly allocates your target Spot capacity across the number of Spot pools that you specify.

  • excess_capacity_termination_policy - Indicates whether running Spot instances should be terminated if the target capacity of the Spot fleet request is decreased below the current size of the Spot fleet.

  • terminate_instances_with_expiration - Indicates whether running Spot instances should be terminated when the Spot fleet request expires.

  • instance_interruption_behaviour - (Optional) Indicates whether a Spot instance stops or terminates when it is interrupted. Default is terminate.

  • fleet_type - (Optional) The type of fleet request. Indicates whether the Spot Fleet only requests the target capacity or also attempts to maintain it. Default is maintain.

  • valid_until - (Optional) The end date and time of the request, in UTC RFC3339 format(for example, YYYY-MM-DDTHH:MM:SSZ). At this point, no new Spot instance requests are placed or enabled to fulfill the request. Defaults to 24 hours.

  • valid_from - (Optional) The start date and time of the request, in UTC RFC3339 format(for example, YYYY-MM-DDTHH:MM:SSZ). The default is to start fulfilling the request immediately.

  • load_balancers (Optional) A list of elastic load balancer names to add to the Spot fleet.

  • target_group_arns (Optional) A list of aws_alb_target_group ARNs, for use with Application Load Balancing.

» Timeouts

The timeouts block allows you to specify timeouts for certain actions:

  • create - (Defaults to 10 mins) Used when requesting the spot instance (only valid if wait_for_fulfillment = true)
  • delete - (Defaults to 5 mins) Used when destroying the spot instance

» Attributes Reference

In addition to all arguments above, the following attributes are exported: