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NyeDrRgo1w7ndZEQJZYaList All VPCs in AWS
List All VPCs in AWS
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This task enumerates all Virtual Private Clouds across every AWS region in an account. This task is essential for network management, security audits, and resource tracking, especially in large-scale environments. It provides details like VPC IDs, CIDR blocks, and associated resources for each VPC.
inputs
outputs
import boto3
from botocore.exceptions import ClientError
creds = _get_creds(cred_label)['creds']
access_key = creds['username']
secret_key = creds['password']
def list_vpcs_in_region(region_name):
vpcs_info = []
try:
session = boto3.Session(aws_access_key_id=access_key,aws_secret_access_key=secret_key,region_name=region_name)
ec2 = session.client('ec2')
response = ec2.describe_vpcs()
vpcs = response.get('Vpcs', [])
if vpcs:
print(f"In region '{region_name}', found the following VPCs:")
for vpc in vpcs:
vpc_id = vpc['VpcId']
vpcs_info.append({'Region': region_name, 'VPC_ID': vpc_id})
print(f" VPC ID: {vpc_id}")
else:
print(f"No VPCs found in region '{region_name}'.")
except ClientError as e:
print(f"An error occurred in region {region_name}: {e}")
except Exception as e:
print(f"An unexpected error occurred in region {region_name}: {e}")
return vpcs_info
def list_vpcs_all_regions():
all_vpcs_info = []
try:
session = boto3.Session(aws_access_key_id=access_key,aws_secret_access_key=secret_key,region_name='us-east-1')
ec2 = session.client('ec2')
regions = [region['RegionName'] for region in ec2.describe_regions()['Regions']]
for region in regions:
vpcs_info = list_vpcs_in_region(region)
all_vpcs_info.extend(vpcs_info)
except ClientError as e:
print(f"An error occurred: {e}")
except Exception as e:
print(f"An unexpected error occurred: {e}")
return all_vpcs_info
#region_name = None # Replace with a region name or leave as None for all regions
if region_name:
vpcs = list_vpcs_in_region(region_name)
else:
vpcs = list_vpcs_all_regions()
#print(vpcs)
# Summary of all VPCs across regions
if vpcs:
print("\nSummary of all VPCs across regions:")
for vpc in vpcs:
print(f"Region: {vpc['Region']}, VPC ID: {vpc['VPC_ID']}")
else:
print("No VPCs found in any of the regions.")
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