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Future features we would like to add: Many businesses use one big, poorly defined (default) VPC.
There are a few problems with this: At a fundamental level, you want to have as many barriers between development and production environments as possible.
This is not recommended for production so you may want to remove these rules after testing. You must have permissions to create/destroy EC2 instances for complete setup and teardown.
The destroy method has multiple guards to prevent you from accidentally deleting EC2 instances not created by this project.
There are a few requirements in how you deploy your VPCs to use this library: 1.
You must have deployed your VPCs with Cloud Formation and have Outputs for internal subnet with the strings “Private” or “Public” and “Subnet”, e.g.
“Dev Private Subnet AZ1A”, “Dev Private Subnet AZ1B”, “Dev Private Subnet AZ1C.” 2.
Here’s one example of how we want a VPC to behave: We want a Utility VPC peered to a Staging VPC.a mechanism to be able to test the network level connectivity between VPCs, subnets, IGW/NAT and report any problems.This project is “Vpc Spec Validator,” a Python 3 library built on top of the boto3.2) Find instances in those subnets created by this library 3) Get the Private IP address of target instances and write it to a local configuration file ”‘ # Query for peer Cloud Formation, get instances target_subnet_list =  target_ip_list =  with open(self.config_file_path, 'r') as ymlfile: cfg = yaml.load(ymlfile) for peer in self.peers_list: peer_stack_name = "-vpc--".format(self.project_name, peer, cfg['region']) # Look at each peer's Cloud Formation Stack Outputs and get a list of subnets (public or private) client = boto3.client('cloudformation') response = client.describe_stacks(Stack Name=peer_stack_name) response_outputs = response['Stacks']['Outputs'] for i in range(0,len(response_outputs)): if self.subnet_type == 'public': if 'Subnet' in response_outputs[i]['Output Key'] and 'Public' in \ response_outputs[i]['Output Key']: subnet_id = response_outputs[i]['Output Value'] target_subnet_list.append(subnet_id) else: if 'Subnet' in response_outputs[i]['Output Key'] and 'Private' in \ response_outputs[i]['Output Key']: subnet_id = response_outputs[i]['Output Value'] target_subnet_list.append(subnet_id) # Search the instances in the targeted subnets for a Name tag of Vpc Spec Validator client = boto3.client('ec2') describe_response = client.describe_instances( Filters= ) # Get Private IP addresses of these instances and write them to target_ip_list.settings for i in range(0,len(describe_response['Reservations'])): target_ip_list.append(describe_response['Reservations'][i]['Instances']['Private Ip Address']) # Write the list to a configuration file used at runtime for EC2 instance with open('config/env_settings/target_ip_list.settings', 'w') as settings_file: settings_file.write(str(target_ip_list))match_cloudformation() “` At Element 84, we believe our work benefits our world, and open source is one way to personify this value.We’re in the process of open sourcing this library at the moment.