capacityReservationPreference

Indicates the instance's Capacity Reservation preferences. Possible preferences include:

• capacity-reservations-only - The instance will only run in a Capacity Reservation or Capacity Reservation group. If capacity isn't available, the instance will fail to launch.

• open - The instance can run in any open Capacity Reservation that has matching attributes (instance type, platform, Availability Zone, and tenancy). If capacity isn't available, the instance runs as an On-Demand Instance.

• none - The instance doesn't run in a Capacity Reservation even if one is available. The instance runs as an On-Demand Instance.