如何从列表中停止 EC2 实例

Question

我有下面的代码，它在本地运行得很好，可以停止 EC2 实例，但是当我试图移动它的生产时，它只停止了第一个实例，而不是第二个 one/nth

import boto3
import json

access_key = "AKIAJSVXXXXXXXXXX"
secret_key = "mSvhX5q7uw8dTZ543qtC6OXXXXXXXXXXXX"
client = boto3.client('ec2', aws_access_key_id=access_key, aws_secret_access_key=secret_key, region_name='us-east-1')
file1 = open("Myfile.txt", "r").read().split("\n")
print(file1)

ec2_result = client.describe_instances(
    Filters=[
        {
            'Name': 'tag:Name',
            'Values': file1
            
        }
    ]
)


ids = [ec2_result['Reservations'][0]['Instances'][i]['InstanceId'] for i in
       range(len(ec2_result['Reservations'][0]['Instances']))]
print(ids)
response = client.stop_instances(
    InstanceIds=ids
)

print("stooped now")

Myfile.txt

instanceonename
instance2name

它在我的本地系统中运行良好，但在生产环境中，它只停止了第一个 EC2 实例不是第二个

Answer 1

它只停止一个实例，因为你的列表理解只迭代一个实例。你需要 double for:

ids = [instance['InstanceId'] \
         for reservation in ec2_result['Reservations'] \
         for instance in reservation['Instances']]

如何从列表中停止 EC2 实例

How to Stop EC2 Instance from the list

python

amazon-ec2

boto

amazon-web-services

boto3