[EC2] Debian Etch AMIの作成

基本的には、こちらの手順通り実行するだけですが、/usr/lib/site_ruby/aes/amiutil/image.rbを少し編集しないとAMIが起動しません。
HOWTO Building a self-bundling Debian AMI

作成したAMI上でAMIのバンドルを可能にするためec2-ami-toolsをインストールする。

# cd /usr/local/src
# wget http://s3.amazonaws.com/ec2-downloads/ec2-ami-tools.noarch.rpm
# alien --to-deb ec2-ami-tools.noarch.rpm
# dpkg -i ec2-ami-tools_1.3-15587_all.deb

/usr/lib/site_ruby/aes/amiutil/image.rbに対するパッチ

*** image.rb    2007-11-20 11:06:08.000000000 +0000
--- /usr/lib/site_ruby/aes/amiutil/image.rb     2007-12-06 02:59:31.000000000 +0000
***************
*** 172,183 ****
--- 172,190 ----
      # Make device nodes.      dev_dir = IMG_MNT + '/dev'
      Dir.mkdir( dev_dir )
+
+     # Make mount point
+     FileUtils.mkdir_p(IMG_MNT + '/lib/init/rw')
+
      # MAKEDEV is incredibly variable across distros, so use mknod directly.
      exec("mknod #{dev_dir}/null    c 1 3")
      exec("mknod #{dev_dir}/zero    c 1 5")
      exec("mknod #{dev_dir}/tty     c 5 0")
      exec("mknod #{dev_dir}/console c 5 1")
      exec("ln -s null #{dev_dir}/X0R")
+
+     # Make special device
+     exec("cd #{dev_dir} && /sbin/MAKEDEV std && /sbin/MAKEDEV generic")
    end

    #----------------------------------------------------------------------------#

Railsで使用するなら、Rakefileを作成しておきます。
コマンド例

% rake ec2:images
% rake ec2:run id=i-38f7397
% rake ec2:instances
% rake ec2:terminate id=i-38f7397
% rake ec2:console_output id=i-38f7397
% rake ec2:register manifest=my-images/debian_etch_Dec06.manifest.xml
% rake ec2:deregister id=ami-33js73
% rake ec2:login user=Gabriel

#{RAILS_ROOT}/lib/tasks/ec2.rake

# cavii, Inc
# Tasks for EC2 
require 'env'
require 'erb'

namespace :ec2 do
  @config ||= YAML::load(ERB.new(IO.read("#{RAILS_ROOT}/config/aws.yml")).result)

  desc <<-EOH
    Describe the available images to launch. You can specify the owners of images.
    e.g.) rake ec2:images [id=ami_id | --all]
  EOH
  task :images do
    id = ENV['id']
    system %{cd #{ENV['EC2_HOME']} && ./bin/ec2-describe-images #{id}}
  end

  desc <<-EOH
    Describe the current state of the specified instances(s). 
    e.g.) rake ec2:instances [id=i-038592]
  EOH
  task :instances do
    system %{cd #{ENV['EC2_HOME']} && ./bin/ec2-describe-instances #{ENV['id']}}
  end

  desc <<-EOH
    Run an instance with ami_id. You can obtain ami_id using 'rake ec2:images'.
    e.g.) rake ec2:run id=ami-3683a933
  EOH
  task :run do
    begin
      ENV['key'] ||= 'gsg-keypair'
      system %{cd #{ENV['EC2_HOME']} && ./bin/ec2-run-instances #{ENV['id']} -k #{ENV['key']}}
    rescue 
      puts %{Usage: rake ec2:run id=<AMI ID>}
    end
  end

  desc <<-EOH
    Terminate the specified instance.
    e.g.) rake ec2:run id=i-5ab44333
  EOH
  task :terminate do
    begin
      system %{cd #{ENV['EC2_HOME']} && ./bin/ec2-terminate-instances #{ENV['id']}}
    rescue
      puts "Usage: rake ec2:run id=<AMI INSTANCE ID>"
    end
  end

  desc <<-EOH
    Registers the Amazon Machine Image, and you should specify the manifest file.
    e.g.) rake ec2:register manifest=mybucket/image.manifest.xml
  EOH
  task :register do
    begin
      raise unless ENV['manifest']
      system %{cd #{ENV['EC2_HOME']} && ./bin/ec2-register #{ENV['manifest']}}
    rescue
      puts "Usage: rake ec2:register manifest=mybucket/image.manifest.xml"
    end
  end

  desc <<-EOH
    Deregister the amazon machine image.
  EOH
  task :deregister do
    system %{cd #{ENV['EC2_HOME']} && ./bin/ec2-deregister #{ENV['id']}}
  end

  desc <<-EOH
    Show the console output, and you should specify instance id.
  EOH
  task :console_output do
    system %{cd #{ENV['EC2_HOME']} && ./bin/ec2-get-console-output #{ENV['id']}}
  end

  task :login do
    user = ENV['user']? ENV['user'] : 'root'
    system %{ssh -i #{@config['ec2_id_rsa']} #{user}@#{@config['primary_instance_url']}}
  end

end

config/aws.yml

aws_access_key: 'XXXXXXXXXXXXXXXXX'
aws_secret_access_key: 'XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX'
aws_account: 'XXXX-XXXX-XXXX'
image_bucket: "mybucket"
ec2_id_rsa: '~/ec2/id_rsa-gsg-keypair'
ec2_keypair_name: "gsg-keypair"
primary_instance_url: 'ec2-62-222-21-118.compute-1.amazonaws.com'
options:
    use_ssl: true