Class: AWS::EC2::Image

Inherits:
Resource
  • Object
show all
Includes:
HasPermissions, TaggedItem
Defined in:
lib/aws/ec2/image.rb

Overview

Represents an Amazon Machine Image (AMI).

Instance Attribute Summary collapse

Instance Method Summary collapse

Methods included from HasPermissions

#permissions, #private?, #public=, #public?

Methods included from TaggedItem

#add_tag, #clear_tags, #tags

Instance Attribute Details

#architecture ⇒ Symbol (readonly)

The architecture of the image (e.g. :i386).

Returns:

  • (Symbol) —

    the current value of architecture



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# File 'lib/aws/ec2/image.rb', line 89

def architecture
  @architecture
end

#description ⇒ String

A description of the image.

Returns:

  • (String) —

    the current value of description



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# File 'lib/aws/ec2/image.rb', line 89

def description
  @description
end

#hypervisor ⇒ Symbol (readonly)

The image’s hypervisor type.

Possible values are:

  • :ovm

  • :xen

Returns:

  • (Symbol) —

    the current value of hypervisor



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# File 'lib/aws/ec2/image.rb', line 89

def hypervisor
  @hypervisor
end

#id ⇒ String (readonly)

Returns The ID of the AMI.

Returns:

  • (String) —

    The ID of the AMI.



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# File 'lib/aws/ec2/image.rb', line 101

def id
  @id
end

#kernel_id ⇒ String (readonly)

The kernel ID associated with the image, if any. Only applicable for machine images.

Returns:

  • (String) —

    the current value of kernel_id



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# File 'lib/aws/ec2/image.rb', line 89

def kernel_id
  @kernel_id
end

#location ⇒ String (readonly)

The location of the AMI.

Returns:

  • (String) —

    the current value of location



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# File 'lib/aws/ec2/image.rb', line 89

def location
  @location
end

#name ⇒ String (readonly)

The name of the AMI that was provided during image creation.

Returns:

  • (String) —

    the current value of name



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# File 'lib/aws/ec2/image.rb', line 89

def name
  @name
end

#owner_alias ⇒ String (readonly)

The AWS account alias (e.g., “amazon”) or AWS account ID that owns the AMI.

Returns:

  • (String) —

    the current value of owner_alias



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# File 'lib/aws/ec2/image.rb', line 89

def owner_alias
  @owner_alias
end

#owner_id ⇒ String (readonly)

The AWS account ID of the image owner.

Returns:

  • (String) —

    the current value of owner_id



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# File 'lib/aws/ec2/image.rb', line 89

def owner_id
  @owner_id
end

#platform ⇒ String (readonly)

Value is windows for Windows AMIs; otherwise blank.

Returns:

  • (String) —

    the current value of platform



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# File 'lib/aws/ec2/image.rb', line 89

def platform
  @platform
end

#product_codes ⇒ Array<String> (readonly)

Returns an array of product codes attached to this instance.

Returns:

  • (Array<String>) —

    the current value of product_codes



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# File 'lib/aws/ec2/image.rb', line 89

def product_codes
  @product_codes
end

#ramdisk_id ⇒ String (readonly)

The RAM disk ID associated with the image, if any. Only applicable for machine images.

Returns:

  • (String) —

    the current value of ramdisk_id



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# File 'lib/aws/ec2/image.rb', line 89

def ramdisk_id
  @ramdisk_id
end

#root_device_name ⇒ String (readonly)

The root device name (e.g., “/dev/sda1”, or “xvda”).

Returns:

  • (String) —

    the current value of root_device_name



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# File 'lib/aws/ec2/image.rb', line 89

def root_device_name
  @root_device_name
end

#root_device_type ⇒ Symbol (readonly)

The root device type used by the AMI. Possible values:

  • :ebs

  • :instance_store

Returns:

  • (Symbol) —

    the current value of root_device_type



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# File 'lib/aws/ec2/image.rb', line 89

def root_device_type
  @root_device_type
end

#state ⇒ Symbol (readonly)

Current state of the AMI. If the state is :available, the image is successfully registered and available for launching. Valid values:

  • :available

  • :pending

  • :failed

Returns:

  • (Symbol) —

    the current value of state



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# File 'lib/aws/ec2/image.rb', line 89

def state
  @state
end

#state_reason ⇒ Object (readonly)

The reason for the image’s most recent state change. The return value is an object with the following methods:

code

Reason code for the state change.

message

A textual description of the state change.

Returns:

  • (Object) —

    the current value of state_reason



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# File 'lib/aws/ec2/image.rb', line 89

def state_reason
  @state_reason
end

#type ⇒ Symbol (readonly)

The type of image. Valid values are:

  • :machine

  • :kernel

  • :ramdisk

Returns:

  • (Symbol) —

    the current value of type



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# File 'lib/aws/ec2/image.rb', line 89

def type
  @type
end

#virtualization_type ⇒ Symbol (readonly)

The type of virtualization of the AMI. Possible values:

  • :paravirtual

  • :hvm

Returns:

  • (Symbol) —

    the current value of virtualization_type



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# File 'lib/aws/ec2/image.rb', line 89

def virtualization_type
  @virtualization_type
end

Instance Method Details

#add_product_codes(*product_codes) ⇒ nil

Adds one or more product codes:

image.add_product_codes 'ABCXYZ', 'MNOPQR'

You can also pass an array of product codes:

image.add_product_codes ['ABCXYZ', 'MNOPQR']

Parameters:

  • product_codes (Array<String>)

Returns:

  • (nil) 


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# File 'lib/aws/ec2/image.rb', line 240

def add_product_codes *product_codes
  opts = {}
  opts[:image_id] = self.id
  opts[:product_codes] = product_codes.flatten
  client.modify_image_attribute(opts)
  nil
end

#block_device_mappings ⇒ Hash

Returns a hash of block device mappings for the image. In each entry, the key is the device name (e.g. “/dev/sda1”) and the value is an object with the following methods that return information about the block device:

snapshot_id

The ID of the snapshot that will be used to create this device (may be nil).

volume_size

The size of the volume, in GiBs.

delete_on_termination

True if the Amazon EBS volume is deleted on instance termination.

Returns:

  • (Hash) —

    Returns a hash of block device mappings for the image. In each entry, the key is the device name (e.g. “/dev/sda1”) and the value is an object with the following methods that return information about the block device:

    snapshot_id

    The ID of the snapshot that will be used to create this device (may be nil).

    volume_size

    The size of the volume, in GiBs.

    delete_on_termination

    True if the Amazon EBS volume is deleted on instance termination.



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# File 'lib/aws/ec2/image.rb', line 163

def block_device_mappings
  (block_device_mapping || []).inject({}) do |h,mapping|
    h[mapping.device_name] = mapping.ebs
    h
  end
end

#deregister ⇒ nil Also known as: delete

Deregisters this AMI. Once deregistered, the AMI cannot be used to launch new instances.

Returns:

  • (nil) 


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# File 'lib/aws/ec2/image.rb', line 173

def deregister
  client.deregister_image(:image_id => id)
  nil
end

#exists? ⇒ Boolean

Returns true if the AMI exists (is returned by the DescribeImages action).

Returns:

  • (Boolean) —

    Returns true if the AMI exists (is returned by the DescribeImages action).



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# File 'lib/aws/ec2/image.rb', line 207

def exists?
  resp = client.describe_images(:filters => [
    { :name => "image-id", :values => [id] }
  ])
  !resp.images_set.empty?
end

#kernel ⇒ Image

Returns The kernel associated with the image, if any. Only applicable for machine images.

Returns:

  • (Image) —

    The kernel associated with the image, if any. Only applicable for machine images.



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# File 'lib/aws/ec2/image.rb', line 216

def kernel
  if id = kernel_id
    Image.new(id, :config => config)
  end
end

#ramdisk ⇒ Image

Returns The RAM disk associated with the image, if any. Only applicable for machine images.

Returns:

  • (Image) —

    The RAM disk associated with the image, if any. Only applicable for machine images.



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# File 'lib/aws/ec2/image.rb', line 224

def ramdisk
  if id = ramdisk_id
    Image.new(id, :config => config)
  end
end

#run_instance(options = {}) ⇒ Instance or Array

Runs a single instance of this image.

Parameters:

  • options (Hash) (defaults to: {})

Options Hash (options):

  • :count (Object) —

    How many instances to request. By default one instance is requested. You can specify this either as an integer or as a Range, to indicate the minimum and maximum number of instances to run. Note that for a new account you can request at most 20 instances at once.

  • :block_device_mappings (Hash) —

    This must be a hash; the keys are device names to map, and the value for each entry determines how that device is mapped. Valid values include:

    • A string, which is interpreted as a virtual device name.

    • The symbol :no_device, which overrides the default mapping for a device so that it is not mapped to anything.

    • A hash with any of the following options. One of :snapshot, :snapshot_id or :volume_size is required.

      :snapshot

      A snapshot to use when creating the block device.

      :snapshot_id

      The ID of a snapshot to use when creating the block device.

      :volume_size

      The size of volume to create, in gigabytes.

      :delete_on_termination

      Setting this to true causes EC2 to delete the volume when the instance is terminated.

  • :monitoring (Boolean) —

    Setting this to true enables CloudWatch monitoring on the instances once they are started.

  • :availability_zone (String) —

    Specifies the availability zone where the instance should run. Without this option, EC2 will choose an availability zone for you.

  • :image_id (String) —

    ID of the AMI you want to launch.

  • :key_name (String) —

    The name of the key pair to use. Note: Launching public images without a key pair ID will leave them inaccessible.

  • :security_groups (Array) —

    The names of the security groups that will be used to determine network access rules for the instances. You may pass instances of SecurityGroup as well.

  • :user_data (String) —

    Arbitrary user data. You do not need to encode this value.

  • :instance_type (String) —

    The type of instance to launch, for example “m1.small”.

  • :kernel_id (String) —

    The ID of the kernel with which to launch the instance.

  • :ramdisk_id (String) —

    The ID of the RAM disk to select. Some kernels require additional drivers at launch. Check the kernel requirements for information on whether you need to specify a RAM disk. To find kernel requirements, refer to the Resource Center and search for the kernel ID.

  • :disable_api_termination (Boolean) —

    Specifies whether you can terminate the instance using the EC2 API. A value of true means you can’t terminate the instance using the API (i.e., the instance is “locked”); a value of false means you can. If you set this to true, and you later want to terminate the instance, you must first enable API termination. For example:

    i = ec2.instances.create(:image_id => "ami-8c1fece5",
                         :disable_api_termination => true)
i.api_termination_disabled?        # => true
i.terminate                        # raises an exception
i.api_termination_disabled = false
i.terminate                        # terminates the instance
  • :instance_initiated_shutdown_behavior (String) —

    Determines whether the instance stops or terminates on instance-initiated shutdown.

Returns:

  • (Instance or Array) —

    If a single instance is being created, this returns an AWS::EC2::Instance to represent the newly created instance. Otherwise it returns an array of instance objects.



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# File 'lib/aws/ec2/image.rb', line 185

def run_instance options = {}
  instances = InstanceCollection.new(:config => config)
  instances.create(options.merge(:image => self))
end

#run_instances(count, options = {}) ⇒ Array<Instance>

Runs multiple instances of this image.

Parameters:

  • count (Integer) —

    How many instances to request. You can specify this either as an integer or as a Range, to indicate the minimum and maximum number of instances to run. Note that for a new account you can request at most 20 instances at a time.

  • options (Hash) (defaults to: {})

Options Hash (options):

  • :count (Object) —

    How many instances to request. By default one instance is requested. You can specify this either as an integer or as a Range, to indicate the minimum and maximum number of instances to run. Note that for a new account you can request at most 20 instances at once.

  • :block_device_mappings (Hash) —

    This must be a hash; the keys are device names to map, and the value for each entry determines how that device is mapped. Valid values include:

    • A string, which is interpreted as a virtual device name.

    • The symbol :no_device, which overrides the default mapping for a device so that it is not mapped to anything.

    • A hash with any of the following options. One of :snapshot, :snapshot_id or :volume_size is required.

      :snapshot

      A snapshot to use when creating the block device.

      :snapshot_id

      The ID of a snapshot to use when creating the block device.

      :volume_size

      The size of volume to create, in gigabytes.

      :delete_on_termination

      Setting this to true causes EC2 to delete the volume when the instance is terminated.

  • :monitoring (Boolean) —

    Setting this to true enables CloudWatch monitoring on the instances once they are started.

  • :availability_zone (String) —

    Specifies the availability zone where the instance should run. Without this option, EC2 will choose an availability zone for you.

  • :image_id (String) —

    ID of the AMI you want to launch.

  • :key_name (String) —

    The name of the key pair to use. Note: Launching public images without a key pair ID will leave them inaccessible.

  • :security_groups (Array) —

    The names of the security groups that will be used to determine network access rules for the instances. You may pass instances of SecurityGroup as well.

  • :user_data (String) —

    Arbitrary user data. You do not need to encode this value.

  • :instance_type (String) —

    The type of instance to launch, for example “m1.small”.

  • :kernel_id (String) —

    The ID of the kernel with which to launch the instance.

  • :ramdisk_id (String) —

    The ID of the RAM disk to select. Some kernels require additional drivers at launch. Check the kernel requirements for information on whether you need to specify a RAM disk. To find kernel requirements, refer to the Resource Center and search for the kernel ID.

  • :disable_api_termination (Boolean) —

    Specifies whether you can terminate the instance using the EC2 API. A value of true means you can’t terminate the instance using the API (i.e., the instance is “locked”); a value of false means you can. If you set this to true, and you later want to terminate the instance, you must first enable API termination. For example:

    i = ec2.instances.create(:image_id => "ami-8c1fece5",
                         :disable_api_termination => true)
i.api_termination_disabled?        # => true
i.terminate                        # raises an exception
i.api_termination_disabled = false
i.terminate                        # terminates the instance
  • :instance_initiated_shutdown_behavior (String) —

    Determines whether the instance stops or terminates on instance-initiated shutdown.

Returns:



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# File 'lib/aws/ec2/image.rb', line 201

def run_instances count, options = {}
  run_instance(options.merge(:count => count))
end