measure-aws.rb

require 'bundler/inline'
gemfile do
  source 'https://rubygems.org'
  gem "aws-sdk", "~> 3.0"
end

require 'aws-sdk'

ec2 = Aws::EC2::Resource.new(region: 'us-east-1')

nodes_request = 5
node_type = 't3.2xlarge' # m5.12xlarge

puts "Requesting #{nodes_request} nodes of type #{node_type}"

instances = ec2.create_instances({
  image_id: 'ami-035be7bafff33b6b6', # Amazon Linux 2 AMI (HVM), SSD
  min_count: nodes_request,
  max_count: nodes_request,
  key_name: 'kirs',
  instance_type: node_type,
  subnet_id: 'subnet-677f2f02',
})

started_at = Time.now

instances.each do |instance|
  puts "Waiting for #{instance.id}..."
  # Wait for the instance to be created, running, and passed status checks
  ec2.client.wait_until(:instance_status_ok, {instance_ids: [instance.id]})
end

puts "Delta: #{(Time.now-started_at).round(2)}s"

# cleanup
instances.each do |instance|
  instance.terminate
end