Use ModifyCapacityReservation with a CLI

Example 1: To change the number of instances reserved by an existing capacity reservation

The following modify-capacity-reservation example changes the number of instances for which the capacity reservation reserves capacity.

aws ec2 modify-capacity-reservation \
    --capacity-reservation-id cr-1234abcd56EXAMPLE \
    --instance-count 5

Output:

{
    "Return": true
}

For more information, see Modify a Capacity Reservation in the Amazon EC2 User Guide.

Example 2: To change the end date and time for an existing capacity reservation

The following modify-capacity-reservation example modifies an existing capacity reservation to end at the specified date and time.

aws ec2 modify-capacity-reservation \
    --capacity-reservation-id cr-1234abcd56EXAMPLE \
    --end-date-type limited \
    --end-date 2019-08-31T23:59:59Z

For more information, see Modify a Capacity Reservation in the Amazon EC2 User Guide.

Example 1: This example modifies the CapacityReservationId cr-0c1f2345db6f7cdba by changing the instane count to 1

Edit-EC2CapacityReservation -CapacityReservationId cr-0c1f2345db6f7cdba -InstanceCount 1

Output:

True

Example 1: This example modifies the CapacityReservationId cr-0c1f2345db6f7cdba by changing the instane count to 1

Edit-EC2CapacityReservation -CapacityReservationId cr-0c1f2345db6f7cdba -InstanceCount 1

Output:

True