Run audit of tenant - service versions in specified aws region - cluster.

ecs_tenant_audit.rb

#! /usr/bin/env ruby
require 'aws-sdk-ecs'


class EcsTenantAudit
  attr_reader :region, :cluster

  def initialize(region: "us-east-1", cluster: "ecs-q")
    @region = region
    @cluster = cluster
    @ecs = Aws::ECS::Resource.new(region: region)

    @service_arns ||= []
    self.retrieve_service_arns
    @service_arns.sort!
  end

  def retrieve_service_arns(next_token=nil)
    params = { cluster: @cluster, next_token: next_token }
    services = @ecs.client.list_services(params)
    @service_arns.push(*services.service_arns)

    if services.next_token
      retrieve_service_arns(services.next_token)
    end
  end

  def get_results
    @service_arns.each_slice(10) do |service_arn_batch|
      params = { cluster: @cluster, services: service_arn_batch}
      resp = @ecs.client.describe_services(params)

      resp[:services].each do |service|
        task_definition = service[:task_definition]

        td_resp = @ecs.client.describe_task_definition({task_definition: task_definition})
        td_version = td_resp[:task_definition][:container_definitions].first[:image].split(':').last.sub(/^\d+\./, "")
        puts "#{service[:service_name]} - #{td_version}"
      end
    end

    puts "Total: #{@service_arns.length}"
  end
end

EcsTenantAudit.new(cluster: "ecs-q").get_results
EcsTenantAudit.new(cluster: "ecs-stg").get_results