1. 首先在共享帐户中授予目标帐户必要的IAM角色和权限，在目标帐户中创建IAM用户，并将其添加到必要的IAM角色中。以下是授予角色和权限的示例策略：

{ "Version": "2012-10-17", "Statement": [ { "Effect": "Allow", "Action": [ "ec2:CreateTags", "ec2:Describe*", "ec2:Get*", "ec2:List*" ], "Resource": "*" } ] }

2. 创建一个SNS主题并将其添加到共享帐户中。在目标帐户中，订阅SNS主题，并将其添加到必要的IAM角色中。

3. 在共享帐户中使用Python Boto3 SDK编写Lambda函数来共享AMI，并将其添加到SNS主题中。以下是示例代码：

import boto3 import json

def lambda_handler(event, context):

ec2 = boto3.client('ec2')

filters = [{'Name': 'tag:Name', 'Values': ['my-ami']}]
images = ec2.describe_images(Filters=filters)

if len(images['Images']) > 0:
    image = images['Images'][0]
    image_id = image['ImageId']

response = ec2.modify_image_attribute(
    Attribute='launchPermission',
    ImageId=image_id,
    OperationType='add',
    UserIds=[''],
)

sns = boto3.client('sns')
message = json.dumps({'ami_id': image_id})
response = sns.publish(
    TopicArn='',
    Message=message
)

4. 在目标帐户中使用Python Boto3 SDK编写Lambda函数来从SNS主题中获取共享的AMI ID，并添加其到EC2实例中。以下是示例代码：

import boto3 import json

def lambda_handler(event, context):

ami_id = json.loads(event['Records'][0]['Sns']['Message'])['ami_id']

ec2 = boto3.client('ec2')
instances = ec2.describe_instances()

for reservation in instances['Reservations']:
    for instance in reservation['Instances']:
        if instance['State']['Code'] == 16 and instance['Tags']:
            for tag in instance['Tags']:
                if tag['Key'] == 'Name' and tag['Value'] == 'my-instance':
                    response = ec2.create_image(
                        InstanceId=instance['InstanceId'],
                        Name='my-ami-copy',
                        Description='My AMI Copy',
                        DryRun=False,
                    )
                    ec2.create_tags(
                        Resources=[response['ImageId']],
                        Tags=[
                            {
                                'Key': 'SharingAccountId',
                                'Value': ''
                            },
                            {
                                'Key': 'SharingTime',
                                'Value': ''
                            }
                        ]
                    )

注意：在