CfnLaunchConfiguration¶

class aws_cdk.aws_autoscaling.CfnLaunchConfiguration(scope, id, *, image_id, instance_type, associate_public_ip_address=None, block_device_mappings=None, classic_link_vpc_id=None, classic_link_vpc_security_groups=None, ebs_optimized=None, iam_instance_profile=None, instance_id=None, instance_monitoring=None, kernel_id=None, key_name=None, launch_configuration_name=None, metadata_options=None, placement_tenancy=None, ram_disk_id=None, security_groups=None, spot_price=None, user_data=None)¶

Bases: aws_cdk.core.CfnResource

A CloudFormation AWS::AutoScaling::LaunchConfiguration.

The AWS::AutoScaling::LaunchConfiguration resource specifies the launch configuration that can be used by an Auto Scaling group to configure Amazon EC2 instances.

When you update the launch configuration for an Auto Scaling group, CloudFormation deletes that resource and creates a new launch configuration with the updated properties and a new name. Existing instances are not affected. To update existing instances when you update the AWS::AutoScaling::LaunchConfiguration resource, you can specify an UpdatePolicy attribute for the group. You can find sample update policies for rolling updates in Auto scaling template snippets .

For more information, see Launch configurations in the Amazon EC2 Auto Scaling User Guide . .. epigraph:

To configure Amazon EC2 instances launched as part of the Auto Scaling group, you can specify a launch template or a launch configuration. We recommend that you use a `launch template <https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-resource-ec2-launchtemplate.html>`_ to make sure that you can use the latest features of Amazon EC2, such as Dedicated Hosts and T2 Unlimited instances. For more information, see `Creating a launch template for an Auto Scaling group <https://docs.aws.amazon.com/autoscaling/ec2/userguide/create-launch-template.html>`_ .

CloudformationResource: AWS::AutoScaling::LaunchConfiguration
Link: http://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-resource-autoscaling-launchconfiguration.html
ExampleMetadata: fixture=_generated

Example:

# The code below shows an example of how to instantiate this type.
# The values are placeholders you should change.
import aws_cdk.aws_autoscaling as autoscaling

cfn_launch_configuration = autoscaling.CfnLaunchConfiguration(self, "MyCfnLaunchConfiguration",
    image_id="imageId",
    instance_type="instanceType",

    # the properties below are optional
    associate_public_ip_address=False,
    block_device_mappings=[autoscaling.CfnLaunchConfiguration.BlockDeviceMappingProperty(
        device_name="deviceName",

        # the properties below are optional
        ebs=autoscaling.CfnLaunchConfiguration.BlockDeviceProperty(
            delete_on_termination=False,
            encrypted=False,
            iops=123,
            snapshot_id="snapshotId",
            throughput=123,
            volume_size=123,
            volume_type="volumeType"
        ),
        no_device=False,
        virtual_name="virtualName"
    )],
    classic_link_vpc_id="classicLinkVpcId",
    classic_link_vpc_security_groups=["classicLinkVpcSecurityGroups"],
    ebs_optimized=False,
    iam_instance_profile="iamInstanceProfile",
    instance_id="instanceId",
    instance_monitoring=False,
    kernel_id="kernelId",
    key_name="keyName",
    launch_configuration_name="launchConfigurationName",
    metadata_options=autoscaling.CfnLaunchConfiguration.MetadataOptionsProperty(
        http_endpoint="httpEndpoint",
        http_put_response_hop_limit=123,
        http_tokens="httpTokens"
    ),
    placement_tenancy="placementTenancy",
    ram_disk_id="ramDiskId",
    security_groups=["securityGroups"],
    spot_price="spotPrice",
    user_data="userData"
)

Create a new AWS::AutoScaling::LaunchConfiguration.

Parameters

scope (Construct) –
- scope in which this resource is defined.
id (str) –
- scoped id of the resource.
image_id (str) – Provides the unique ID of the Amazon Machine Image (AMI) that was assigned during registration. For more information, see Find a Linux AMI in the Amazon EC2 User Guide for Linux Instances .
instance_type (str) – Specifies the instance type of the EC2 instance. For information about available instance types, see Available instance types in the Amazon EC2 User Guide for Linux Instances .
associate_public_ip_address (Union[bool, IResolvable, None]) – For Auto Scaling groups that are running in a virtual private cloud (VPC), specifies whether to assign a public IP address to the group’s instances. If you specify true , each instance in the Auto Scaling group receives a unique public IP address. For more information, see Launching Auto Scaling instances in a VPC in the Amazon EC2 Auto Scaling User Guide . If an instance receives a public IP address and is also in a VPC that is defined in the same stack template, you must use the DependsOn attribute to declare a dependency on the VPC-gateway attachment . .. epigraph:: If the instance is launched into a default subnet, the default is to assign a public IP address, unless you disabled the option to assign a public IP address on the subnet. If the instance is launched into a nondefault subnet, the default is not to assign a public IP address, unless you enabled the option to assign a public IP address on the subnet.
block_device_mappings (Union[IResolvable, Sequence[Union[IResolvable, BlockDeviceMappingProperty]], None]) – Specifies how block devices are exposed to the instance. You can specify virtual devices and EBS volumes.
classic_link_vpc_id (Optional[str]) – EC2-Classic retires on August 15, 2022. This parameter is not supported after that date.. The ID of a ClassicLink-enabled VPC to link your EC2-Classic instances to.
classic_link_vpc_security_groups (Optional[Sequence[str]]) – EC2-Classic retires on August 15, 2022. This parameter is not supported after that date.. The IDs of one or more security groups for the VPC that you specified in the ClassicLinkVPCId property. If you specify the ClassicLinkVPCId property, you must specify this property.
ebs_optimized (Union[bool, IResolvable, None]) – Specifies whether the launch configuration is optimized for EBS I/O ( true ) or not ( false ). This optimization provides dedicated throughput to Amazon EBS and an optimized configuration stack to provide optimal EBS I/O performance. Additional fees are incurred when you enable EBS optimization for an instance type that is not EBS-optimized by default. For more information, see Amazon EBS–optimized instances in the Amazon EC2 User Guide for Linux Instances . The default value is false .
iam_instance_profile (Optional[str]) – Provides the name or the Amazon Resource Name (ARN) of the instance profile associated with the IAM role for the instance. The instance profile contains the IAM role. For more information, see IAM role for applications that run on Amazon EC2 instances in the Amazon EC2 Auto Scaling User Guide .
instance_id (Optional[str]) – The ID of the Amazon EC2 instance you want to use to create the launch configuration. Use this property if you want the launch configuration to use settings from an existing Amazon EC2 instance. When you use an instance to create a launch configuration, all properties are derived from the instance with the exception of BlockDeviceMapping and AssociatePublicIpAddress . You can override any properties from the instance by specifying them in the launch configuration.
instance_monitoring (Union[bool, IResolvable, None]) – Controls whether instances in this group are launched with detailed ( true ) or basic ( false ) monitoring. The default value is true (enabled). .. epigraph:: When detailed monitoring is enabled, Amazon CloudWatch generates metrics every minute and your account is charged a fee. When you disable detailed monitoring, CloudWatch generates metrics every 5 minutes. For more information, see Configure monitoring for Auto Scaling instances in the Amazon EC2 Auto Scaling User Guide .
kernel_id (Optional[str]) – Provides the ID of the kernel associated with the EC2 AMI. .. epigraph:: We recommend that you use PV-GRUB instead of kernels and RAM disks. For more information, see User provided kernels in the Amazon EC2 User Guide for Linux Instances .
key_name (Optional[str]) – Provides the name of the EC2 key pair. .. epigraph:: If you do not specify a key pair, you can’t connect to the instance unless you choose an AMI that is configured to allow users another way to log in. For information on creating a key pair, see Amazon EC2 key pairs and Linux instances in the Amazon EC2 User Guide for Linux Instances .
launch_configuration_name (Optional[str]) – The name of the launch configuration. This name must be unique per Region per account.
metadata_options (Union[IResolvable, MetadataOptionsProperty, None]) – The metadata options for the instances. For more information, see Configuring the Instance Metadata Options in the Amazon EC2 Auto Scaling User Guide .
placement_tenancy (Optional[str]) – The tenancy of the instance, either default or dedicated . An instance with dedicated tenancy runs on isolated, single-tenant hardware and can only be launched into a VPC. You must set the value of this property to dedicated if want to launch dedicated instances in a shared tenancy VPC (a VPC with the instance placement tenancy attribute set to default). If you specify this property, you must specify at least one subnet in the VPCZoneIdentifier property of the AWS::AutoScaling::AutoScalingGroup resource. For more information, see Configure instance tenancy with Amazon EC2 Auto Scaling in the Amazon EC2 Auto Scaling User Guide .
ram_disk_id (Optional[str]) –
The ID of the RAM disk to select. .. epigraph:: We recommend that you use PV-GRUB instead of kernels and RAM disks. For more information, see User provided kernels in the Amazon EC2 User Guide for Linux Instances .
security_groups (Optional[Sequence[str]]) – A list that contains the security groups to assign to the instances in the Auto Scaling group. The list can contain both the IDs of existing security groups and references to SecurityGroup resources created in the template. For more information, see Security groups for your VPC in the Amazon Virtual Private Cloud User Guide .
spot_price (Optional[str]) – The maximum hourly price you are willing to pay for any Spot Instances launched to fulfill the request. Spot Instances are launched when the price you specify exceeds the current Spot price. For more information, see Request Spot Instances for fault-tolerant and flexible applications in the Amazon EC2 Auto Scaling User Guide . .. epigraph:: When you change your maximum price by creating a new launch configuration, running instances will continue to run as long as the maximum price for those running instances is higher than the current Spot price. Valid Range: Minimum value of 0.001
user_data (Optional[str]) – The Base64-encoded user data to make available to the launched EC2 instances. For more information, see Instance metadata and user data in the Amazon EC2 User Guide for Linux Instances .

Methods

add_deletion_override(path)¶

Syntactic sugar for addOverride(path, undefined).

Parameters: path (str) – The path of the value to delete.
Return type: None

add_depends_on(target)¶

Indicates that this resource depends on another resource and cannot be provisioned unless the other resource has been successfully provisioned.

This can be used for resources across stacks (or nested stack) boundaries and the dependency will automatically be transferred to the relevant scope.

Parameters

target (CfnResource) –

Return type

None

add_metadata(key, value)¶

Add a value to the CloudFormation Resource Metadata.

Parameters

key (str) –
value (Any) –

See

https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/metadata-section-structure.html

Note that this is a different set of metadata from CDK node metadata; this metadata ends up in the stack template under the resource, whereas CDK node metadata ends up in the Cloud Assembly.

Return type: None

add_override(path, value)¶

Adds an override to the synthesized CloudFormation resource.

To add a property override, either use addPropertyOverride or prefix path with “Properties.” (i.e. Properties.TopicName).

If the override is nested, separate each nested level using a dot (.) in the path parameter. If there is an array as part of the nesting, specify the index in the path.

To include a literal . in the property name, prefix with a \. In most programming languages you will need to write this as "\\." because the \ itself will need to be escaped.

For example:

cfn_resource.add_override("Properties.GlobalSecondaryIndexes.0.Projection.NonKeyAttributes", ["myattribute"])
cfn_resource.add_override("Properties.GlobalSecondaryIndexes.1.ProjectionType", "INCLUDE")

would add the overrides Example:

"Properties": {
   "GlobalSecondaryIndexes": [
     {
       "Projection": {
         "NonKeyAttributes": [ "myattribute" ]
         ...
       }
       ...
     },
     {
       "ProjectionType": "INCLUDE"
       ...
     },
   ]
   ...
}

The value argument to addOverride will not be processed or translated in any way. Pass raw JSON values in here with the correct capitalization for CloudFormation. If you pass CDK classes or structs, they will be rendered with lowercased key names, and CloudFormation will reject the template.

Parameters

path (str) –
- The path of the property, you can use dot notation to override values in complex types. Any intermdediate keys will be created as needed.
value (Any) –
- The value. Could be primitive or complex.

Return type

None

add_property_deletion_override(property_path)¶

Adds an override that deletes the value of a property from the resource definition.

Parameters: property_path (str) – The path to the property.
Return type: None

add_property_override(property_path, value)¶

Adds an override to a resource property.

Syntactic sugar for addOverride("Properties.<...>", value).

Parameters

property_path (str) – The path of the property.
value (Any) – The value.

Return type

None

apply_removal_policy(policy=None, *, apply_to_update_replace_policy=None, default=None)¶

Sets the deletion policy of the resource based on the removal policy specified.

The Removal Policy controls what happens to this resource when it stops being managed by CloudFormation, either because you’ve removed it from the CDK application or because you’ve made a change that requires the resource to be replaced.

The resource can be deleted (RemovalPolicy.DESTROY), or left in your AWS account for data recovery and cleanup later (RemovalPolicy.RETAIN).

Parameters

policy (Optional[RemovalPolicy]) –
apply_to_update_replace_policy (Optional[bool]) – Apply the same deletion policy to the resource’s “UpdateReplacePolicy”. Default: true
default (Optional[RemovalPolicy]) – The default policy to apply in case the removal policy is not defined. Default: - Default value is resource specific. To determine the default value for a resoure, please consult that specific resource’s documentation.

Return type

None

get_att(attribute_name)¶

Returns a token for an runtime attribute of this resource.

Ideally, use generated attribute accessors (e.g. resource.arn), but this can be used for future compatibility in case there is no generated attribute.

Parameters: attribute_name (str) – The name of the attribute.
Return type: Reference

get_metadata(key)¶

Retrieve a value value from the CloudFormation Resource Metadata.

Parameters

key (str) –

See

https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/metadata-section-structure.html

Note that this is a different set of metadata from CDK node metadata; this metadata ends up in the stack template under the resource, whereas CDK node metadata ends up in the Cloud Assembly.

Return type: Any

inspect(inspector)¶

Examines the CloudFormation resource and discloses attributes.

Parameters

inspector (TreeInspector) –

tree inspector to collect and process attributes.

Return type

None

override_logical_id(new_logical_id)¶

Overrides the auto-generated logical ID with a specific ID.

Parameters: new_logical_id (str) – The new logical ID to use for this stack element.
Return type: None

to_string()¶

Returns a string representation of this construct.

Return type: str
Returns: a string representation of this resource

Attributes

CFN_RESOURCE_TYPE_NAME = 'AWS::AutoScaling::LaunchConfiguration'¶

associate_public_ip_address¶

For Auto Scaling groups that are running in a virtual private cloud (VPC), specifies whether to assign a public IP address to the group’s instances.

If you specify true , each instance in the Auto Scaling group receives a unique public IP address. For more information, see Launching Auto Scaling instances in a VPC in the Amazon EC2 Auto Scaling User Guide .

If an instance receives a public IP address and is also in a VPC that is defined in the same stack template, you must use the DependsOn attribute to declare a dependency on the VPC-gateway attachment . .. epigraph:

If the instance is launched into a default subnet, the default is to assign a public IP address, unless you disabled the option to assign a public IP address on the subnet. If the instance is launched into a nondefault subnet, the default is not to assign a public IP address, unless you enabled the option to assign a public IP address on the subnet.

Link: http://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-resource-autoscaling-launchconfiguration.html#cfn-autoscaling-launchconfiguration-associatepublicipaddress
Return type: Union[bool, IResolvable, None]

block_device_mappings¶

Specifies how block devices are exposed to the instance.

You can specify virtual devices and EBS volumes.

Link: http://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-resource-autoscaling-launchconfiguration.html#cfn-autoscaling-launchconfiguration-blockdevicemappings
Return type: Union[IResolvable, List[Union[IResolvable, BlockDeviceMappingProperty]], None]

cfn_options¶

Options for this resource, such as condition, update policy etc.

Return type: ICfnResourceOptions

cfn_resource_type¶

AWS resource type.

Return type: str

classic_link_vpc_id¶

EC2-Classic retires on August 15, 2022. This parameter is not supported after that date..

The ID of a ClassicLink-enabled VPC to link your EC2-Classic instances to.

Link: http://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-resource-autoscaling-launchconfiguration.html#cfn-autoscaling-launchconfiguration-classiclinkvpcid
Return type: Optional[str]

classic_link_vpc_security_groups¶

EC2-Classic retires on August 15, 2022. This parameter is not supported after that date..

The IDs of one or more security groups for the VPC that you specified in the ClassicLinkVPCId property.

If you specify the ClassicLinkVPCId property, you must specify this property.

Link: http://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-resource-autoscaling-launchconfiguration.html#cfn-autoscaling-launchconfiguration-classiclinkvpcsecuritygroups
Return type: Optional[List[str]]

creation_stack¶

return:

the stack trace of the point where this Resource was created from, sourced from the +metadata+ entry typed +aws:cdk:logicalId+, and with the bottom-most node +internal+ entries filtered.

Return type: List[str]

ebs_optimized¶

Specifies whether the launch configuration is optimized for EBS I/O ( true ) or not ( false ).

This optimization provides dedicated throughput to Amazon EBS and an optimized configuration stack to provide optimal EBS I/O performance. Additional fees are incurred when you enable EBS optimization for an instance type that is not EBS-optimized by default. For more information, see Amazon EBS–optimized instances in the Amazon EC2 User Guide for Linux Instances .

The default value is false .

Link: http://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-resource-autoscaling-launchconfiguration.html#cfn-autoscaling-launchconfiguration-ebsoptimized
Return type: Union[bool, IResolvable, None]

iam_instance_profile¶

Provides the name or the Amazon Resource Name (ARN) of the instance profile associated with the IAM role for the instance.

The instance profile contains the IAM role.

For more information, see IAM role for applications that run on Amazon EC2 instances in the Amazon EC2 Auto Scaling User Guide .

Link: http://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-resource-autoscaling-launchconfiguration.html#cfn-autoscaling-launchconfiguration-iaminstanceprofile
Return type: Optional[str]

image_id¶

Provides the unique ID of the Amazon Machine Image (AMI) that was assigned during registration.

For more information, see Find a Linux AMI in the Amazon EC2 User Guide for Linux Instances .

Link: http://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-resource-autoscaling-launchconfiguration.html#cfn-autoscaling-launchconfiguration-imageid
Return type: str

instance_id¶

The ID of the Amazon EC2 instance you want to use to create the launch configuration.

Use this property if you want the launch configuration to use settings from an existing Amazon EC2 instance. When you use an instance to create a launch configuration, all properties are derived from the instance with the exception of BlockDeviceMapping and AssociatePublicIpAddress . You can override any properties from the instance by specifying them in the launch configuration.

Link: http://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-resource-autoscaling-launchconfiguration.html#cfn-autoscaling-launchconfiguration-instanceid
Return type: Optional[str]

instance_monitoring¶

Controls whether instances in this group are launched with detailed ( true ) or basic ( false ) monitoring.

The default value is true (enabled). .. epigraph:

When detailed monitoring is enabled, Amazon CloudWatch generates metrics every minute and your account is charged a fee. When you disable detailed monitoring, CloudWatch generates metrics every 5 minutes. For more information, see `Configure monitoring for Auto Scaling instances <https://docs.aws.amazon.com/autoscaling/latest/userguide/as-instance-monitoring.html#enable-as-instance-metrics>`_ in the *Amazon EC2 Auto Scaling User Guide* .

Link: http://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-resource-autoscaling-launchconfiguration.html#cfn-autoscaling-launchconfiguration-instancemonitoring
Return type: Union[bool, IResolvable, None]

instance_type¶

Specifies the instance type of the EC2 instance.

For information about available instance types, see Available instance types in the Amazon EC2 User Guide for Linux Instances .

Link: http://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-resource-autoscaling-launchconfiguration.html#cfn-autoscaling-launchconfiguration-instancetype
Return type: str

kernel_id¶

Provides the ID of the kernel associated with the EC2 AMI.

We recommend that you use PV-GRUB instead of kernels and RAM disks. For more information, see User provided kernels in the Amazon EC2 User Guide for Linux Instances .

Link: http://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-resource-autoscaling-launchconfiguration.html#cfn-autoscaling-launchconfiguration-kernelid
Return type: Optional[str]

key_name¶

Provides the name of the EC2 key pair.

If you do not specify a key pair, you can’t connect to the instance unless you choose an AMI that is configured to allow users another way to log in. For information on creating a key pair, see Amazon EC2 key pairs and Linux instances in the Amazon EC2 User Guide for Linux Instances .

Link: http://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-resource-autoscaling-launchconfiguration.html#cfn-autoscaling-launchconfiguration-keyname
Return type: Optional[str]

launch_configuration_name¶

The name of the launch configuration.

This name must be unique per Region per account.

Link: http://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-resource-autoscaling-launchconfiguration.html#cfn-autoscaling-launchconfiguration-launchconfigurationname
Return type: Optional[str]

logical_id¶

The logical ID for this CloudFormation stack element.

The logical ID of the element is calculated from the path of the resource node in the construct tree.

To override this value, use overrideLogicalId(newLogicalId).

Return type: str
Returns

the logical ID as a stringified token. This value will only get resolved during synthesis.

metadata_options¶

The metadata options for the instances.

For more information, see Configuring the Instance Metadata Options in the Amazon EC2 Auto Scaling User Guide .

Link: http://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-resource-autoscaling-launchconfiguration.html#cfn-autoscaling-launchconfiguration-metadataoptions
Return type: Union[IResolvable, MetadataOptionsProperty, None]

node¶

The construct tree node associated with this construct.

Return type: ConstructNode

placement_tenancy¶

The tenancy of the instance, either default or dedicated .

An instance with dedicated tenancy runs on isolated, single-tenant hardware and can only be launched into a VPC. You must set the value of this property to dedicated if want to launch dedicated instances in a shared tenancy VPC (a VPC with the instance placement tenancy attribute set to default).

If you specify this property, you must specify at least one subnet in the VPCZoneIdentifier property of the AWS::AutoScaling::AutoScalingGroup resource.

For more information, see Configure instance tenancy with Amazon EC2 Auto Scaling in the Amazon EC2 Auto Scaling User Guide .

Link: http://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-resource-autoscaling-launchconfiguration.html#cfn-autoscaling-launchconfiguration-placementtenancy
Return type: Optional[str]

ram_disk_id¶

The ID of the RAM disk to select.

We recommend that you use PV-GRUB instead of kernels and RAM disks. For more information, see User provided kernels in the Amazon EC2 User Guide for Linux Instances .

Link: http://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-resource-autoscaling-launchconfiguration.html#cfn-autoscaling-launchconfiguration-ramdiskid
Return type: Optional[str]

ref¶

Return a string that will be resolved to a CloudFormation { Ref } for this element.

If, by any chance, the intrinsic reference of a resource is not a string, you could coerce it to an IResolvable through Lazy.any({ produce: resource.ref }).

Return type: str

security_groups¶

A list that contains the security groups to assign to the instances in the Auto Scaling group.

The list can contain both the IDs of existing security groups and references to SecurityGroup resources created in the template.

For more information, see Security groups for your VPC in the Amazon Virtual Private Cloud User Guide .

Link: http://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-resource-autoscaling-launchconfiguration.html#cfn-autoscaling-launchconfiguration-securitygroups
Return type: Optional[List[str]]

spot_price¶

The maximum hourly price you are willing to pay for any Spot Instances launched to fulfill the request.

Spot Instances are launched when the price you specify exceeds the current Spot price. For more information, see Request Spot Instances for fault-tolerant and flexible applications in the Amazon EC2 Auto Scaling User Guide . .. epigraph:

When you change your maximum price by creating a new launch configuration, running instances will continue to run as long as the maximum price for those running instances is higher than the current Spot price.

Valid Range: Minimum value of 0.001

Link: http://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-resource-autoscaling-launchconfiguration.html#cfn-autoscaling-launchconfiguration-spotprice
Return type: Optional[str]

stack¶

The stack in which this element is defined.

CfnElements must be defined within a stack scope (directly or indirectly).

Return type: Stack

user_data¶

The Base64-encoded user data to make available to the launched EC2 instances.

For more information, see Instance metadata and user data in the Amazon EC2 User Guide for Linux Instances .

Link: http://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-resource-autoscaling-launchconfiguration.html#cfn-autoscaling-launchconfiguration-userdata
Return type: Optional[str]

Static Methods

classmethod is_cfn_element(x)¶

Returns true if a construct is a stack element (i.e. part of the synthesized cloudformation template).

Uses duck-typing instead of instanceof to allow stack elements from different versions of this library to be included in the same stack.

Parameters

x (Any) –

Return type

bool

Returns

The construct as a stack element or undefined if it is not a stack element.

classmethod is_cfn_resource(construct)¶

Check whether the given construct is a CfnResource.

Parameters

construct (IConstruct) –

Return type

bool

classmethod is_construct(x)¶

Return whether the given object is a Construct.

Parameters

x (Any) –

Return type

bool

BlockDeviceMappingProperty¶

class CfnLaunchConfiguration.BlockDeviceMappingProperty(*, device_name, ebs=None, no_device=None, virtual_name=None)¶

Bases: object

BlockDeviceMapping specifies a block device mapping for the BlockDeviceMappings property of the AWS::AutoScaling::LaunchConfiguration resource.

Each instance that is launched has an associated root device volume, either an Amazon EBS volume or an instance store volume. You can use block device mappings to specify additional EBS volumes or instance store volumes to attach to an instance when it is launched.

For more information, see Example block device mapping in the Amazon EC2 User Guide for Linux Instances .

Parameters

device_name (str) – The device name exposed to the EC2 instance (for example, /dev/sdh or xvdh ). For more information, see Device naming on Linux instances in the Amazon EC2 User Guide for Linux Instances .
ebs (Union[IResolvable, BlockDeviceProperty, None]) – Parameters used to automatically set up EBS volumes when an instance is launched. You can specify either VirtualName or Ebs , but not both.
no_device (Union[bool, IResolvable, None]) – Setting this value to true suppresses the specified device included in the block device mapping of the AMI. If NoDevice is true for the root device, instances might fail the EC2 health check. In that case, Amazon EC2 Auto Scaling launches replacement instances. If you specify NoDevice , you cannot specify Ebs .
virtual_name (Optional[str]) – The name of the virtual device. The name must be in the form ephemeral X where X is a number starting from zero (0), for example, ephemeral0 . You can specify either VirtualName or Ebs , but not both.

Link

http://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-properties-autoscaling-launchconfiguration-blockdevicemapping.html

ExampleMetadata

fixture=_generated

Example:

# The code below shows an example of how to instantiate this type.
# The values are placeholders you should change.
import aws_cdk.aws_autoscaling as autoscaling

block_device_mapping_property = autoscaling.CfnLaunchConfiguration.BlockDeviceMappingProperty(
    device_name="deviceName",

    # the properties below are optional
    ebs=autoscaling.CfnLaunchConfiguration.BlockDeviceProperty(
        delete_on_termination=False,
        encrypted=False,
        iops=123,
        snapshot_id="snapshotId",
        throughput=123,
        volume_size=123,
        volume_type="volumeType"
    ),
    no_device=False,
    virtual_name="virtualName"
)

Attributes

device_name¶

The device name exposed to the EC2 instance (for example, /dev/sdh or xvdh ).

For more information, see Device naming on Linux instances in the Amazon EC2 User Guide for Linux Instances .

Link: http://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-properties-autoscaling-launchconfiguration-blockdevicemapping.html#cfn-autoscaling-launchconfiguration-blockdevicemapping-devicename
Return type: str

ebs¶

Parameters used to automatically set up EBS volumes when an instance is launched.

You can specify either VirtualName or Ebs , but not both.

Link: http://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-properties-autoscaling-launchconfiguration-blockdevicemapping.html#cfn-autoscaling-launchconfiguration-blockdevicemapping-ebs
Return type: Union[IResolvable, BlockDeviceProperty, None]

no_device¶

Setting this value to true suppresses the specified device included in the block device mapping of the AMI.

If NoDevice is true for the root device, instances might fail the EC2 health check. In that case, Amazon EC2 Auto Scaling launches replacement instances.

If you specify NoDevice , you cannot specify Ebs .

Link: http://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-properties-autoscaling-launchconfiguration-blockdevicemapping.html#cfn-autoscaling-launchconfiguration-blockdevicemapping-nodevice
Return type: Union[bool, IResolvable, None]

virtual_name¶

The name of the virtual device.

The name must be in the form ephemeral X where X is a number starting from zero (0), for example, ephemeral0 .

You can specify either VirtualName or Ebs , but not both.

Link: http://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-properties-autoscaling-launchconfiguration-blockdevicemapping.html#cfn-autoscaling-launchconfiguration-blockdevicemapping-virtualname
Return type: Optional[str]

BlockDeviceProperty¶

class CfnLaunchConfiguration.BlockDeviceProperty(*, delete_on_termination=None, encrypted=None, iops=None, snapshot_id=None, throughput=None, volume_size=None, volume_type=None)¶

Bases: object

BlockDevice is a property of the EBS property of the AWS::AutoScaling::LaunchConfiguration BlockDeviceMapping property type that describes an Amazon EBS volume.

Parameters

delete_on_termination (Union[bool, IResolvable, None]) – Indicates whether the volume is deleted on instance termination. For Amazon EC2 Auto Scaling, the default value is true .
encrypted (Union[bool, IResolvable, None]) – Specifies whether the volume should be encrypted. Encrypted EBS volumes can only be attached to instances that support Amazon EBS encryption. For more information, see Supported instance types . If your AMI uses encrypted volumes, you can also only launch it on supported instance types. .. epigraph:: If you are creating a volume from a snapshot, you cannot create an unencrypted volume from an encrypted snapshot. Also, you cannot specify a KMS key ID when using a launch configuration. If you enable encryption by default, the EBS volumes that you create are always encrypted, either using the AWS managed KMS key or a customer-managed KMS key, regardless of whether the snapshot was encrypted. For more information, see Use AWS KMS keys to encrypt Amazon EBS volumes in the Amazon EC2 Auto Scaling User Guide .
iops (Union[int, float, None]) – The number of input/output (I/O) operations per second (IOPS) to provision for the volume. For gp3 and io1 volumes, this represents the number of IOPS that are provisioned for the volume. For gp2 volumes, this represents the baseline performance of the volume and the rate at which the volume accumulates I/O credits for bursting. The following are the supported values for each volume type: - gp3 : 3,000-16,000 IOPS - io1 : 100-64,000 IOPS For io1 volumes, we guarantee 64,000 IOPS only for Instances built on the Nitro System . Other instance families guarantee performance up to 32,000 IOPS. Iops is supported when the volume type is gp3 or io1 and required only when the volume type is io1 . (Not used with standard , gp2 , st1 , or sc1 volumes.)
snapshot_id (Optional[str]) – The snapshot ID of the volume to use. You must specify either a VolumeSize or a SnapshotId .
throughput (Union[int, float, None]) – The throughput (MiBps) to provision for a gp3 volume.
volume_size (Union[int, float, None]) – The volume size, in GiBs. The following are the supported volumes sizes for each volume type:. - gp2 and gp3 : 1-16,384 - io1 : 4-16,384 - st1 and sc1 : 125-16,384 - standard : 1-1,024 You must specify either a SnapshotId or a VolumeSize . If you specify both SnapshotId and VolumeSize , the volume size must be equal or greater than the size of the snapshot.
volume_type (Optional[str]) – The volume type. For more information, see Amazon EBS Volume Types in the Amazon EC2 User Guide for Linux Instances . Valid Values: standard | io1 | gp2 | st1 | sc1 | gp3

Link

http://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-properties-autoscaling-launchconfiguration-blockdevice.html

ExampleMetadata

fixture=_generated

Example:

# The code below shows an example of how to instantiate this type.
# The values are placeholders you should change.
import aws_cdk.aws_autoscaling as autoscaling

block_device_property = autoscaling.CfnLaunchConfiguration.BlockDeviceProperty(
    delete_on_termination=False,
    encrypted=False,
    iops=123,
    snapshot_id="snapshotId",
    throughput=123,
    volume_size=123,
    volume_type="volumeType"
)

Attributes

delete_on_termination¶

Indicates whether the volume is deleted on instance termination.

For Amazon EC2 Auto Scaling, the default value is true .

Link: http://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-properties-autoscaling-launchconfiguration-blockdevice.html#cfn-autoscaling-launchconfiguration-blockdevice-deleteontermination
Return type: Union[bool, IResolvable, None]

encrypted¶

Specifies whether the volume should be encrypted.

Encrypted EBS volumes can only be attached to instances that support Amazon EBS encryption. For more information, see Supported instance types . If your AMI uses encrypted volumes, you can also only launch it on supported instance types. .. epigraph:

If you are creating a volume from a snapshot, you cannot create an unencrypted volume from an encrypted snapshot. Also, you cannot specify a KMS key ID when using a launch configuration.

If you enable encryption by default, the EBS volumes that you create are always encrypted, either using the AWS managed KMS key or a customer-managed KMS key, regardless of whether the snapshot was encrypted.

For more information, see `Use AWS KMS keys to encrypt Amazon EBS volumes <https://docs.aws.amazon.com/autoscaling/ec2/userguide/ec2-auto-scaling-data-protection.html#encryption>`_ in the *Amazon EC2 Auto Scaling User Guide* .

Link: http://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-properties-autoscaling-launchconfiguration-blockdevice.html#cfn-autoscaling-launchconfiguration-blockdevice-encrypted
Return type: Union[bool, IResolvable, None]

iops¶

The number of input/output (I/O) operations per second (IOPS) to provision for the volume.

For gp3 and io1 volumes, this represents the number of IOPS that are provisioned for the volume. For gp2 volumes, this represents the baseline performance of the volume and the rate at which the volume accumulates I/O credits for bursting.

The following are the supported values for each volume type:

gp3 : 3,000-16,000 IOPS
io1 : 100-64,000 IOPS

For io1 volumes, we guarantee 64,000 IOPS only for Instances built on the Nitro System . Other instance families guarantee performance up to 32,000 IOPS.

Iops is supported when the volume type is gp3 or io1 and required only when the volume type is io1 . (Not used with standard , gp2 , st1 , or sc1 volumes.)

Link: http://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-properties-autoscaling-launchconfiguration-blockdevice.html#cfn-autoscaling-launchconfiguration-blockdevice-iops
Return type: Union[int, float, None]

snapshot_id¶

The snapshot ID of the volume to use.

You must specify either a VolumeSize or a SnapshotId .

Link: http://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-properties-autoscaling-launchconfiguration-blockdevice.html#cfn-autoscaling-launchconfiguration-blockdevice-snapshotid
Return type: Optional[str]

throughput¶

The throughput (MiBps) to provision for a gp3 volume.

Link: http://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-properties-autoscaling-launchconfiguration-blockdevice.html#cfn-autoscaling-launchconfiguration-blockdevice-throughput
Return type: Union[int, float, None]

volume_size¶

.

gp2 and gp3 : 1-16,384
io1 : 4-16,384
st1 and sc1 : 125-16,384
standard : 1-1,024

You must specify either a SnapshotId or a VolumeSize . If you specify both SnapshotId and VolumeSize , the volume size must be equal or greater than the size of the snapshot.

Link: http://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-properties-autoscaling-launchconfiguration-blockdevice.html#cfn-autoscaling-launchconfiguration-blockdevice-volumesize
Type: The volume size, in GiBs. The following are the supported volumes sizes for each volume type
Return type: Union[int, float, None]

volume_type¶

The volume type.

For more information, see Amazon EBS Volume Types in the Amazon EC2 User Guide for Linux Instances .

Valid Values: standard | io1 | gp2 | st1 | sc1 | gp3

Link: http://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-properties-autoscaling-launchconfiguration-blockdevice.html#cfn-autoscaling-launchconfiguration-blockdevice-volumetype
Return type: Optional[str]

MetadataOptionsProperty¶

class CfnLaunchConfiguration.MetadataOptionsProperty(*, http_endpoint=None, http_put_response_hop_limit=None, http_tokens=None)¶

Bases: object

MetadataOptions is a property of AWS::AutoScaling::LaunchConfiguration that describes metadata options for the instances.

For more information, see Configure the instance metadata options in the Amazon EC2 Auto Scaling User Guide .

Parameters

http_endpoint (Optional[str]) – This parameter enables or disables the HTTP metadata endpoint on your instances. If the parameter is not specified, the default state is enabled . .. epigraph:: If you specify a value of disabled , you will not be able to access your instance metadata.
http_put_response_hop_limit (Union[int, float, None]) – The desired HTTP PUT response hop limit for instance metadata requests. The larger the number, the further instance metadata requests can travel. Default: 1
http_tokens (Optional[str]) – The state of token usage for your instance metadata requests. If the parameter is not specified in the request, the default state is optional . If the state is optional , you can choose to retrieve instance metadata with or without a signed token header on your request. If you retrieve the IAM role credentials without a token, the version 1.0 role credentials are returned. If you retrieve the IAM role credentials using a valid signed token, the version 2.0 role credentials are returned. If the state is required , you must send a signed token header with any instance metadata retrieval requests. In this state, retrieving the IAM role credentials always returns the version 2.0 credentials; the version 1.0 credentials are not available.

Link

http://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-properties-autoscaling-launchconfiguration-metadataoptions.html

ExampleMetadata

fixture=_generated

Example:

# The code below shows an example of how to instantiate this type.
# The values are placeholders you should change.
import aws_cdk.aws_autoscaling as autoscaling

metadata_options_property = autoscaling.CfnLaunchConfiguration.MetadataOptionsProperty(
    http_endpoint="httpEndpoint",
    http_put_response_hop_limit=123,
    http_tokens="httpTokens"
)

Attributes

http_endpoint¶

This parameter enables or disables the HTTP metadata endpoint on your instances.

If the parameter is not specified, the default state is enabled . .. epigraph:

If you specify a value of ``disabled`` , you will not be able to access your instance metadata.

Link: http://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-properties-autoscaling-launchconfiguration-metadataoptions.html#cfn-autoscaling-launchconfiguration-metadataoptions-httpendpoint
Return type: Optional[str]

http_put_response_hop_limit¶

The desired HTTP PUT response hop limit for instance metadata requests.

The larger the number, the further instance metadata requests can travel.

Default: 1

Link: http://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-properties-autoscaling-launchconfiguration-metadataoptions.html#cfn-autoscaling-launchconfiguration-metadataoptions-httpputresponsehoplimit
Return type: Union[int, float, None]

http_tokens¶

The state of token usage for your instance metadata requests.

If the parameter is not specified in the request, the default state is optional .

If the state is optional , you can choose to retrieve instance metadata with or without a signed token header on your request. If you retrieve the IAM role credentials without a token, the version 1.0 role credentials are returned. If you retrieve the IAM role credentials using a valid signed token, the version 2.0 role credentials are returned.

If the state is required , you must send a signed token header with any instance metadata retrieval requests. In this state, retrieving the IAM role credentials always returns the version 2.0 credentials; the version 1.0 credentials are not available.

Link: http://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-properties-autoscaling-launchconfiguration-metadataoptions.html#cfn-autoscaling-launchconfiguration-metadataoptions-httptokens
Return type: Optional[str]