spot_price.py

# python spot_price.py g2.2xlarge
import sys
import boto3
import datetime


def main(argv):
    if len(argv) < 2:
        print("No instance provided!")
        sys.exit()

    client = boto3.client('ec2', region_name='us-west-2')
    regions = [x["RegionName"] for x in client.describe_regions()["Regions"]]

    INSTANCE = argv[1]
    print("Instance: %s" % INSTANCE)

    results = []

    for region in regions:
        client = boto3.client('ec2', region_name=region)
        prices = client.describe_spot_price_history(
            InstanceTypes=[INSTANCE],
            ProductDescriptions=['Linux/UNIX', 'Linux/UNIX (Amazon VPC)'],
            StartTime=(datetime.datetime.now() +
                       datetime.timedelta(days=1)).isoformat(),
            MaxResults=1
        )
        for price in prices["SpotPriceHistory"]:
            results.append((price["AvailabilityZone"], price["SpotPrice"]))

    for region, price in sorted(results, key=lambda x: x[1]):
        print("Region: %s spot price: %s" % (region, price))


if __name__ == "__main__":
    main(sys.argv)