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October 9, 2019 05:52
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List EC2, RDS and ElastiCache instances, grouped by VPC
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| #!/usr/bin/env python3 | |
| # -*- coding: utf-8 -*- | |
| import argparse, sys, boto3, pprint | |
| def count(my_list, my_key): | |
| if my_key not in my_list: | |
| return '0' | |
| else: | |
| return str(len(my_list[my_key])) | |
| parser = argparse.ArgumentParser(description='Delete all internet gateways, subnets, and unoccupied vpcs in an AWS account. Use with care.') | |
| parser.add_argument('--aws-key', dest='aws_key', help='AWS Key') | |
| parser.add_argument('--aws-secret-key', dest='aws_secret_key', help='AWS Secret Key') | |
| parser.add_argument('--region', dest='region', help='Limit to a single region') | |
| args = parser.parse_args() | |
| if args.aws_key and args.aws_secret_key: | |
| session = boto3.Session(aws_access_key_id=args.aws_key, aws_secret_access_key=args.aws_secret_key) | |
| else: | |
| session = boto3.Session() | |
| regions = session.get_available_regions('ec2') | |
| for region in regions: | |
| print("Region: " + region) | |
| if (not args.region) or (args.region == region): | |
| ec2client = session.client('ec2', region) | |
| rdsclient = session.client('rds', region) | |
| instances = {} | |
| dbs = {} | |
| ec2_instances = ec2client.describe_instances(Filters=[ { 'Name': 'instance-state-name', 'Values': [ 'running' ] } ]) | |
| for reservation in ec2_instances['Reservations']: | |
| for instance in reservation['Instances']: | |
| instance_name = instance['InstanceId'] | |
| for tag in instance['Tags']: | |
| if tag['Key'] == 'Name': | |
| instance_name = instance['InstanceId'] + ' (' + tag['Value'] + ')' | |
| if instance['VpcId'] in instances: | |
| instances[instance['VpcId']].append(instance_name) | |
| else: | |
| instances[instance['VpcId']] = [ instance_name ] | |
| db_instances = rdsclient.describe_db_instances() | |
| for db_instance in db_instances['DBInstances']: | |
| if 'DBSubnetGroup' in db_instance: | |
| db_vpc = db_instance['DBSubnetGroup']['VpcId'] | |
| if db_vpc in dbs: | |
| dbs[db_vpc].append(db_instance['DBInstanceIdentifier']) | |
| else: | |
| dbs[db_vpc] = [ db_instance['DBInstanceIdentifier'] ] | |
| vpcs = ec2client.describe_vpcs() | |
| for vpc in vpcs['Vpcs']: | |
| if vpc['IsDefault'] == False: | |
| vpc_id = vpc['VpcId'] | |
| for tag in vpc['Tags']: | |
| if tag['Key'] == "Name": | |
| vpc_name = tag['Value'] | |
| print('\033[1;32;40m' + vpc_id + ' | ' + vpc_name + ' | ' + vpc['CidrBlock'] + ' (' + count(instances, vpc_id) + ' ec2 instances, ' + count(dbs, vpc_id) + ' rds instances)\033[0;37;40m') | |
| if vpc_id in instances: | |
| print('\033[1;33;40m ec2 instances: \033[0;37;40m' + ','.join(instances[vpc_id])) | |
| if vpc_id in dbs: | |
| print('\033[1;35;40m rds instances: \033[0;37;40m' + ','.join(dbs[vpc_id])) |
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This project is in the public domain within the United States, and copyright and related rights in the work worldwide are waived through the CC0 1.0 Universal public domain dedication.