AWS Code Sample
Catalog demonstrates how to create an Amazon EC2 instance.

# Copyright 2010-2019, Inc. or its affiliates. All Rights Reserved. # # This file is licensed under the Apache License, Version 2.0 (the "License"). # You may not use this file except in compliance with the License. A copy of the # License is located at # # # # This file is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS # OF ANY KIND, either express or implied. See the License for the specific # language governing permissions and limitations under the License. import logging import boto3 from botocore.exceptions import ClientError def change_instance_security_groups(instance_id, security_group_ids): """Change the security groups assigned to an EC2 instance This method assigns the security groups to each elastic network interface attached to the EC2 instance. :param instance_id: EC2 instance ID :param security_group_ids: list of security group IDs :return True if the security groups were assigned to each network interface in the EC2 instance. Otherwise, False. """ # Retrieve the IDs of the network interfaces attached to the EC2 instance ec2_client = boto3.client('ec2') try: response = ec2_client.describe_instances(InstanceIds=[instance_id]) except ClientError as e: logging.error(e) return False instance_info = response['Reservations'][0]['Instances'][0] # Assign the security groups to each network interface for network_interface in instance_info['NetworkInterfaces']: try: ec2_client.modify_network_interface_attribute( NetworkInterfaceId=network_interface['NetworkInterfaceId'], Groups=security_group_ids) except ClientError as e: logging.error(e) return False return True def main(): """Exercise change_instance_security_groups()""" # Assign these values before running the program ec2_instance_id = 'INSTANCE_ID' security_group_ids = [ 'SECURITY_GROUP_ID_1', 'SECURITY_GROUP_ID_2', ] # Set up logging logging.basicConfig(level=logging.DEBUG, format='%(levelname)s: %(asctime)s: %(message)s') # Assign the security groups to the EC2 instance if change_instance_security_groups(ec2_instance_id, security_group_ids):'Changed EC2 Instance {ec2_instance_id} Security Groups to:') for security_group in security_group_ids:' ID: {security_group}') if __name__ == '__main__': main()

Sample Details

Service: ec2

Last tested: 2019-2-15

Author: AWS

Type: full-example

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