fog or: How I Learned to Stop Worrying and Love the Cloud (examples)

0_rackspace.rb

server_data = compute.create_server(
  1,
  49
).body['server']

until compute.get_server_details(
  server_data['id']
).body['server']['status'] == 'ACTIVE'
end

commands = [
  %{'mkdir .ssh'},
  %{'echo #{File.read('~/.ssh/id_rsa.pub')} >> ~/.ssh/authorized_keys'},
  %{passwd -l root},
]

Net::SSH.start(
  server_data['addresses'].first,
  'root',
  :password => server_data['password']
) do |ssh|
  commands.each do |command|
    ssh.open_channel do |ssh_channel|
      ssh_channel.request_pty
      ssh_channel.exec(%{bash -lc '#{command}'})
      ssh.loop
    end
  end
end

1_aws.rb

compute.import_key_pair(
  'id_rsa.pub',
  File.read('~/.ssh/id_rsa.pub')
)

compute.authorize_security_group_ingress(
  'CidrIp'      => '0.0.0.0/0',
  'FromPort'    => 22,
  'IpProtocol'  => 'tcp',
  'GroupName'   => 'default',
  'ToPort'      => 22
)

server_data = compute.run_instances(
  'ami-1a837773',
  1,
  1,
  'InstanceType'  => 'm1.small',
  'KeyName'       => 'id_rsa.pub',
  'SecurityGroup' => 'default'
).body['instancesSet'].first

until compute.describe_instances(
  'instance-id' => server_data['instanceId']
).body['reservationSet'].first['instancesSet'].first['instanceState']['name'] == 'running'
end

sleep(300)

Net::SSH.start(
  server_data['ipAddress'],
  'ubuntu',
  :key_data => [File.read('~/.ssh/id_rsa')]
) do |ssh|
  commands = [
    %{'mkdir .ssh'},
    %{'echo #{File.read('~/.ssh/id_rsa.pub')} >> ~/.ssh/authorized_keys'},
    %{passwd -l root},
  ]
  commands.each do |command|
    ssh.open_channel do |ssh_channel|
      ssh_channel.request_pty
      ssh_channel.exec(%{bash -lc '#{command}'})
      ssh.loop
    end
  end
end

2_pinger.rb

require 'rubygems'
require 'fog'

def pinger(credentials, server_attributes, target)
  Formatador.display_line # top padding

  # setup a connection to the service
  compute = Fog::Compute.new(credentials)

  Formatador.display_line("Bootstrapping server...")
  # boot server and setup ssh keys
  server = compute.servers.bootstrap(server_attributes)

  Formatador.display_line("Pinging [bold]#{target}[/]...")
  # ping target 10 times
  ssh_results = server.ssh("ping -c 10 #{target}")
  stdout = ssh_results.first.stdout

  # parse result, last line is summary
  # round-trip min/avg/max/stddev = A.A/B.B/C.C/D.D ms
  stats = stdout.split("/n").last.split(' ')[-2]
  min, avg, max, stddev = stats.split('/')

  Formatador.display_line("Shutting down server...")
  # shutdown the server
  server.destroy

  Formatador.display_line # bottom padding

  # return the data as a hash
  { :min => min, :avg => avg, :max => max, :stddev => stddev }
end

3_aggregator.rb

require 'rubygems'
require 'fog'

def aggregator(credentials, directory_name, file_path)
  Formatador.display_line # top padding

  # setup a connection to the service
  storage = Fog::Storage.new(credentials)

  Formatador.display_line("Creating directory [bold]#{directory_name}[/]")
  # create a directory
  directory = storage.directories.create(
    :key    => directory_name,
    :public => true
  )

  # expand path and get name
  path = File.expand_path(file_path)
  name = File.basename(path)

  Formatador.display_line("Creating file [bold]#{name}[/]")
  # store the file
  file = directory.files.create(
    :body   => File.open(path),
    :key    => name,
    :public => true
  )

  Formatador.display_line # bottom padding

  # return the public url for the file
  file.public_url
end

4_freemium.rb

require 'rubygems'
require 'fog'

def freemium(credentials, domain_name, company_name)
  Formatador.display_line # top padding

  # setup a connection to the service
  dns = Fog::DNS.new(credentials)

  Formatador.display_line("Creating zone [bold]#{domain_name}[/]")
  # create a zone
  zone = dns.zones.create(
    :domain => domain_name,
    :email  => "admin@#{domain_name}"
  )

  Formatador.display_line("Creating record [bold]#{company_name}[/]")
  # create the record
  record = zone.records.create(
    :ip   => '1.2.3.4',
    :name => "#{company_name}.#{domain_name}",
    :type => 'A'
  )

  Formatador.display_line # bottom padding
end