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jokeru/aws_delete-default-vpc.sh

Created March 31, 2018 15:14
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Revisions

  1. jokeru created this gist Mar 31, 2018.
    58 changes: 58 additions & 0 deletions aws_delete-default-vpc.sh
    View file
    Original file line number Diff line number Diff line change
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    #!/usr/bin/env bash


    if [ "$AWS_PROFILE" = "" ]; then
      echo "No AWS_PROFILE set"
      exit 1
    fi


    for region in $(aws ec2 describe-regions --region eu-west-1 | jq -r .Regions[].RegionName); do

      echo "* Region ${region}"

      # get default vpc
      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"
        continue
      fi
      echo "Found default vpc ${vpc}"

      # get internet gateway
      igw=$(aws ec2 --region ${region} \
        describe-internet-gateways --filter Name=attachment.vpc-id,Values=${vpc} \
        | jq -r .InternetGateways[0].InternetGatewayId)
      if [ "${igw}" != "null" ]; then
        echo "Detaching and deleting 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}
      fi

      # get subnets
      subnets=$(aws ec2 --region ${region} \
        describe-subnets --filters Name=vpc-id,Values=${vpc} \
        | jq -r .Subnets[].SubnetId)
      if [ "${subnets}" != "null" ]; then
        for subnet in ${subnets}; do
          echo "Deleting subnet ${subnet}"
          aws ec2 --region ${region} \
            delete-subnet --subnet-id ${subnet}
        done
      fi

      # https://docs.aws.amazon.com/cli/latest/reference/ec2/delete-vpc.html
      # - You can't delete the main route table
      # - You can't delete the default network acl
      # - You can't delete the default security group

      # delete default vpc
      echo "Deleting vpc ${vpc}"
      aws ec2 --region ${region} \
        delete-vpc --vpc-id ${vpc}

    done