AWS - VPC Cleaner

vpc-cleaner.rb

#!/usr/bin/env ruby

# gem install aws-sdk
require 'aws-sdk'

access_key_id = ""
secret_access_key = ""

regions = ["eu-west-1", "sa-east-1", "us-east-1", "ap-northeast-1", "us-west-2", "us-west-1", "ap-southeast-1","sa-east-1"]
avoid_vpcs = ["vpc-51d9693a", "vpc-7784a01f", "vpc-4963702b", "vpc-d4e797bc", "vpc-8ff2eded", "vpc-c8845fad"]

AWS.config(:access_key_id => access_key_id, :secret_access_key => secret_access_key )

STDOUT.write ("Starting VPC clean up process ...\n")
regions.each do |region|
  ec2 = AWS::EC2.new(:region => region)
  ec2.vpcs.each do |vpc|
    if not avoid_vpcs.include? vpc.vpc_id
      vpc.instances.each do |instance|
        instance.terminate
     end
      internet_gateway = vpc.internet_gateway
      internet_gateway.detach(vpc) unless internet_gateway.nil?
     internet_gateway.delete unless internet_gateway.nil?
      vpc.subnets.each do |subnet|
        subnet.delete
      end
      STDOUT.write ("Deleting VPC: "+vpc.vpc_id+" in region "+region+"\n")
      vpc.delete
    else
      STDOUT.write ("Avoiding default VPC: "+vpc.vpc_id+" in region "+region+"\n")
    end
  end
end
STDOUT.write ("VPC clean up process finished\n")