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amazon-web-services - REST API - AWS EC2 每小时定价

问题描述

我想以编程方式检索 AWS EC2 实例的给定实例 ID 的价格列表。我试图通过普通的 REST API 调用（即没有框架）来做到这一点。

我想提供一个实例 ID 列表：

i-12345   
i-45678
...

并最终检索他们每小时的价格：

i-12345 = $0.032
i-45678 = $0.56
...

我正在尝试将 Postman 与我一起使用AccessKey，但是当我使用时SecretKey得到一个：401 Unauthorizedhttps://ec2.amazonaws.com/?Action=DescribeInstances&Filter.1.Name=instance-id&Filter.1.Value=i-12345

很可能我需要多个 REST 调用：

  1. 描述实例以获取实例大小和区域。
  2. 调用定价端点https://docs.aws.amazon.com/aws-cost-management/latest/APIReference/Welcome.html

有任何想法吗？

笔记：

也许我正在以错误的方式解决这个问题。也许我应该查询这些cost explorer API实例在过去X 天内的成本，从而从中推断？

标签： amazon-web-servicesamazon-ec2postmanec2-api-tools

解决方案

有一个定价 API，请参阅 Jeff Barr 的博客： https ://aws.amazon.com/blogs/aws/aws-price-list-api-update-new-query-and-metadata-functions/

请注意，定价记录是针对多种服务的，因此一个好的过滤器可以真正帮助您放大您返回的记录以及所需的分页 API 调用次数（转化为速度......）。

例子：

b3session = boto3.Session(region_name="us-east-1") # pricing API not supported in all regions, I default to us-east-1
pricing_client = b3session.client('pricing')

# Filter to only on-demand, no pre-isntalled SW, and Linux (to avoid adding OS cost in this example)
region_name = 'eu-west-1'
query_parameters =  {           

        'ServiceCode': 'AmazonEC2',
        'FormatVersion': 'aws_v1',
        'Filters': [
                {"Type": "TERM_MATCH", "Field": "regionCode", "Value": region_name},
                {"Type": "TERM_MATCH", "Field": "marketoption", "Value": "OnDemand"},
                {"Type": "TERM_MATCH", "Field": "preInstalledSw", "Value": "NA"},
                {"Type": "TERM_MATCH", "Field": "operatingSystem", "Value": "Linux"},
                {"Type": "TERM_MATCH", "Field": "productFamily", "Value": "Compute Instance"},
                {"Type": "TERM_MATCH", "Field": "tenancy", "Value": "Shared"},
        ]
    }   

next_token = True
while next_token:
        try:
            prices = pricing_client.get_products(**query_parameters)
        except Exception as e:
            print("Some thing went wrong)
            exit(1)
        if 'NextToken' in prices.keys():
            query_parameters['NextToken'] = prices['NextToken']
        else:
            next_token = False
        for p in prices["PriceList"]:
            price = json.loads(p).   # (This API returns strings, not dicts)

            ## DO SOMETHING WITH THIS PRICING RECORD

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