The replacement strategy to use. Only available for fleets of type
maintain.
launch - EC2 Fleet launches a replacement Spot Instance when a rebalance
notification is emitted for an existing Spot Instance in the fleet. EC2 Fleet does not
terminate the instances that receive a rebalance notification. You can terminate the old
instances, or you can leave them running. You are charged for all instances while they are
running.
launch-before-terminate - EC2 Fleet launches a replacement Spot Instance
when a rebalance notification is emitted for an existing Spot Instance in the fleet, and
then, after a delay that you specify (in TerminationDelay), terminates the
instances that received a rebalance notification.
The amount of time (in seconds) that Amazon EC2 waits before terminating the old Spot Instance after launching a new replacement Spot Instance.
Required when ReplacementStrategy is set to launch-before-terminate.
Not valid when ReplacementStrategy is set to launch.
Valid values: Minimum value of 120 seconds. Maximum value of 7200 seconds.
The Spot Instance replacement strategy to use when Amazon EC2 emits a rebalance notification signal that your Spot Instance is at an elevated risk of being interrupted. For more information, see Capacity rebalancing in the Amazon EC2 User Guide.