initial commit

modules/networking/delete-default-vpcs/README.md

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+# delete-default-vpc module
+This terraform module calls awscli to delete default vpc in specified region.
+
+## Example of root module
+```terraform
+data "aws_regions" "current" {}
+
+module delete-default-vpc {
+  source = "git::https://xpk.headdesk.me/git/xpk/terraform.aws-baseline-infra//modules/networking/delete-default-vpcs"
+  for_each = data.aws_regions.current.names
+  region-name = each.value
+}
+```

modules/networking/delete-default-vpcs/exec.sh

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+#!/bin/bash
+
+region=$1
+vpc=$(aws ec2 --region ${region} describe-vpcs --filter Name=isDefault,Values=true | jq -r .Vpcs[0].VpcId)
+if [ "${vpc}" = "null" ]; then
+  echo "No default vpc found"
+  exit 0
+fi
+
+aws ec2 --region ${region} describe-internet-gateways --filter Name=attachment.vpc-id,Values=${vpc} | jq -r '.InternetGateways[0].InternetGatewayId' | while read igw; do
+  echo "Removing internet gateway ${igw}"
+  aws ec2 --region ${region} detach-internet-gateway --internet-gateway-id ${igw} --vpc-id ${vpc}
+  aws ec2 --region ${region} delete-internet-gateway --internet-gateway-id ${igw}
+done
+
+aws ec2 --region ${region} describe-subnets --filters Name=vpc-id,Values=${vpc} | jq -r '.Subnets[].SubnetId' | while read subnet; do
+  echo "Removing subnet ${subnet}"
+  aws ec2 --region ${region} delete-subnet --subnet-id ${subnet}
+done
+
+echo "Removing vpc ${vpc}"
+aws ec2 --region ${region} delete-vpc --vpc-id ${vpc}
+

modules/networking/delete-default-vpcs/main.tf

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+data aws_regions all-aws-regions {}
+
+resource "null_resource" "shell" {
+  for_each = data.aws_regions.all-aws-regions.names
+  provisioner "local-exec" {
+    command = "/bin/bash -c '${path.module}/exec.sh ${each.value}'"
+  }
+}