Skip to content

Instantly share code, notes, and snippets.

@Julian
Created February 3, 2018 16:56
Show Gist options
  • Save Julian/20ddcc51452cd430cf76c9a9cfafdfa2 to your computer and use it in GitHub Desktop.
Save Julian/20ddcc51452cd430cf76c9a9cfafdfa2 to your computer and use it in GitHub Desktop.
from collections import defaultdict
from datetime import datetime, timedelta
from decimal import Decimal
from pprint import pformat, pprint
import json
import boto3
import requests
with requests.get("http://www.ec2instances.info/instances.json") as response:
vCPUs = {
instance["instance_type"]: instance["vCPU"]
for instance in response.json()
}
clients = {
region["RegionName"]: boto3.client("ec2", region_name=region["RegionName"])
for region in boto3.client(
"ec2", region_name="us-east-1",
).describe_regions()["Regions"]
if region["RegionName"].startswith(("us-east", "us-west"))
}
availability_zones = {
region: {
zone["ZoneName"]
for zone in client.describe_availability_zones()["AvailabilityZones"]
} for region, client in clients.iteritems()
}
price_per_vCPU = {}
for instance, vCPU in vCPUs.iteritems():
price_per_vCPU[instance] = {}
for region, client in clients.iteritems():
price_per_vCPU[instance][region] = region_prices = {}
for zone in availability_zones[region]:
history = client.describe_spot_price_history(
InstanceTypes=[instance],
AvailabilityZone=zone,
ProductDescriptions=["Linux/UNIX (Amazon VPC)"],
MaxResults=1,
StartTime=datetime.utcnow() - timedelta(hours=1),
)["SpotPriceHistory"]
if history:
price, = history
region_prices[zone] = Decimal(price["SpotPrice"]) / vCPU
top_3 = sorted(
(price, zone) for zone, price in region_prices.iteritems()
)[:3]
if not top_3:
continue
Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment