1. Assessment of Default VPC

  • Identify AWS Services Using Default VPC
  • Confirm VPC Migration & Impact

2. Deletion Procedures

  • Delete Default VPC Subnets
  • Delete Route Tables
  • Delete Internet Gateway
  • Remove Non-Default Security Groups
  • Delete Default VPC

3. Post-deletion Verification

  • Confirm Default VPC Deletion
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Delete Default VPCs

Overview

Streamline and secure your AWS environment by deleting default VPCs. This configuration plan ensures that default VPCs and their associated components such as subnets, route tables, internet gateways, and non-default security groups are completely removed. This plan executes in multiple phases including the identification of regions with default VPCs, inspecting dependencies, methodically deleting components, and finally verifying complete removal of the VPC.

Execution Details

Assessment of Default VPC

  • Identify Regions with Default VPCs: Evaluate all AWS regions, identifying those housing default VPCs to understand your starting point for the cleanup process.
  • Identify AWS Services Using Default VPC: Determine current dependencies by inspecting Network Interfaces within default VPCs to uncover active services using it.
  • Confirm VPC Migration & Impact: Verify that resources using default VPCs have been migrated or decommissioned to prevent disruptions upon deletion.

Deletion Procedures

  • Delete Subnets: Eradicate all subnets associated with default VPCs to clear network elements before VPC deletion.
  • Delete Route Tables: Disassociate and delete all route tables to remove traffic management configurations.
  • Delete Internet Gateway: Detach and delete the internet gateway to ensure no internet connectivity persists.
  • Delete Security Groups: Remove all non-default security groups to clean up potential stray associations, ensuring only essential security components remain.
  • Delete Default VPC: Final step involves the complete deletion of the default VPC, ensuring all dependencies have been addressed.

Post-deletion Verification

  • Confirm Default VPC Deletion: Verify the thorough removal of the default VPC and its components, ensuring no residues remain to impact your AWS setup. This includes checks for lingering subnets, internet gateways, and security groups to confirm complete liquidation of the VPC environment.

This plan provides a comprehensive, step-by-step approach to delete default VPCs safely and effectively, ensuring a clean and organized AWS environment.