AWS EC2如何精确计算每小时成本？ [英] How exactly does AWS EC2 count hourly costs?

问题描述

一个简单的问题：

如果我有六个完全相同的EC2实例处理数据的时间恰好是十分钟，然后关闭，则需要六个小时还是一个小时？

If I had six identical EC2 instances process data for exactly ten minutes and turn off would I be charged six hours or one hour?

推荐答案

更改的粒度一直到小时。

Granularity for changes are measure down to the hour.

从AWS定价网站 http://aws.amazon.com/ec2/pricing/ ：

从启动实例
到终止实例或停止实例，每个实例每小时消耗的实例价格。所消耗的每个
部分实例小时都将按一个小时计费。

Pricing is per instance-hour consumed for each instance, from the time an instance is launched until it is terminated or stopped. Each partial instance-hour consumed will be billed as a full hour.

除非您计算的时间不超过免费套餐的最低阈值，即您使用一小时付费的EC2实例的第二个阈值。如果您在第一个小时内花了一秒钟，那么第二个小时便要收费。

Unless you are calculating time to be under a threshold for a free tier, the second you use an EC2 instance you're charged for the full hour. If you go one second over the first hour, your charged for a full second hour.

一个警告：竞价型实例。

One caveat: Spot Instances.

如果在使用一小时之前，现货实例被AWS（不是您）中断了，则完全不会向您收费。如果您中断了竞价型实例，则需要支付部分小时的使用费（根据请求的实例，该时间为一整小时）。

If spot instances are interrupted by AWS (not you) before reaching a full hour use, you're not charged at all. If you interrupt the spot instance, you're charge for the partial hour usage (which is a full hour rounded up as per the on-demand instances).

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