Boto3 - 打印 AWS 实例平均 CPU 利用率 [英] Boto3 - Print AWS Instance Average CPU Utilization

问题描述

我正在尝试仅打印出 AWS 实例的平均 CPU 利用率.此代码将打印出响应"，但最后的 for 循环不会打印平均利用率.有人可以帮忙吗?提前致谢！

I am trying to print out just the averaged CPU utilization of an AWS instance. This code will print out the 'response' but the for loop at the end isn't printing the averaged utilization. Could someone assist? Thank you in advance!

    import boto3
    import sys
    from datetime import datetime, timedelta
        client = boto3.client('cloudwatch')
        response = client.get_metric_statistics(
            Namespace='AWS/EC2',
            MetricName='CPUUtilization',
            Dimensions=[
                {
                'Name': 'InstanceId',
                'Value': 'i-1234abcd'
                },
            ],
            StartTime=datetime(2018, 4, 23) - timedelta(seconds=600),
            EndTime=datetime(2018, 4, 24),
            Period=86400,
            Statistics=[
                'Average',
            ],
            Unit='Percent'
        )
    for cpu in response:
        if cpu['Key'] == 'Average':
            k = cpu['Value']
    print(k)

这是我收到的错误消息:

This is the error message I am getting:

    Traceback (most recent call last):
      File "C:\bin\TestCW-CPU.py", line 25, in <module>
        if cpu['Key'] == 'Average':
    TypeError: string indices must be integers

推荐答案

这将输出平均CPU:

    for k, v in response.items():
        if k == 'Datapoints':
        for y in v:
            print(y['Average'])

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