generate_server_list.rb

require "aws-sdk"
require "pry"

filename = File.expand_path("./deploy/video.rb", File.dirname(__FILE__))
config_file = File.open(filename, "w")

client = Aws::EC2::Client.new(
  region: "eu-west-1",
  access_key_id: "access_key_id",
  secret_access_key: "secret_access_key"
)

all_instances = client.describe_instances.reservations.map(&:instances).flatten
running_instances = all_instances.select { |instance| instance.state.name == "running" }
running_video_instances = running_instances.select do |instance|
  instance.tags.any? do |tag|
    tag.key == "aws:autoscaling:groupName" && tag.value == "my-autoscaling-member"
  end
end

running_video_instances.each do |instance|
  config_file.puts %(server "#{instance.public_dns_name}", user: "ubuntu", roles: [:app], internal_ip: "#{instance.private_ip_address}")
end
config_file.close

puts File.read(filename)
puts "inspect #{filename} and run `cap prod deploy`."