2020/07/28 - Auto Scaling - 2 updated api methods
Changes Now you can enable Instance Metadata Service Version 2 (IMDSv2) or disable the instance metadata endpoint with Launch Configurations.
{'MetadataOptions': {'HttpEndpoint': 'disabled | enabled',
'HttpPutResponseHopLimit': 'integer',
'HttpTokens': 'optional | required'}}
Creates a launch configuration.
If you exceed your maximum limit of launch configurations, the call fails. To query this limit, call the DescribeAccountLimits API. For information about updating this limit, see Amazon EC2 Auto Scaling Service Quotas in the Amazon EC2 Auto Scaling User Guide .
For more information, see Launch Configurations in the Amazon EC2 Auto Scaling User Guide .
See also: AWS API Documentation
Request Syntax
client.create_launch_configuration(
LaunchConfigurationName='string',
ImageId='string',
KeyName='string',
SecurityGroups=[
'string',
],
ClassicLinkVPCId='string',
ClassicLinkVPCSecurityGroups=[
'string',
],
UserData='string',
InstanceId='string',
InstanceType='string',
KernelId='string',
RamdiskId='string',
BlockDeviceMappings=[
{
'VirtualName': 'string',
'DeviceName': 'string',
'Ebs': {
'SnapshotId': 'string',
'VolumeSize': 123,
'VolumeType': 'string',
'DeleteOnTermination': True|False,
'Iops': 123,
'Encrypted': True|False
},
'NoDevice': True|False
},
],
InstanceMonitoring={
'Enabled': True|False
},
SpotPrice='string',
IamInstanceProfile='string',
EbsOptimized=True|False,
AssociatePublicIpAddress=True|False,
PlacementTenancy='string',
MetadataOptions={
'HttpTokens': 'optional'|'required',
'HttpPutResponseHopLimit': 123,
'HttpEndpoint': 'disabled'|'enabled'
}
)
string
[REQUIRED]
The name of the launch configuration. This name must be unique per Region per account.
string
The ID of the Amazon Machine Image (AMI) that was assigned during registration. For more information, see Finding an AMI in the Amazon EC2 User Guide for Linux Instances .
If you do not specify InstanceId , you must specify ImageId .
string
The name of the key pair. For more information, see Amazon EC2 Key Pairs in the Amazon EC2 User Guide for Linux Instances .
list
A list that contains the security groups to assign to the instances in the Auto Scaling group.
[EC2-VPC] Specify the security group IDs. For more information, see Security Groups for Your VPC in the Amazon Virtual Private Cloud User Guide .
[EC2-Classic] Specify either the security group names or the security group IDs. For more information, see Amazon EC2 Security Groups in the Amazon EC2 User Guide for Linux Instances .
(string) --
string
The ID of a ClassicLink-enabled VPC to link your EC2-Classic instances to. For more information, see ClassicLink in the Amazon EC2 User Guide for Linux Instances and Linking EC2-Classic Instances to a VPC in the Amazon EC2 Auto Scaling User Guide .
This parameter can only be used if you are launching EC2-Classic instances.
list
The IDs of one or more security groups for the specified ClassicLink-enabled VPC. For more information, see ClassicLink in the Amazon EC2 User Guide for Linux Instances and Linking EC2-Classic Instances to a VPC in the Amazon EC2 Auto Scaling User Guide .
If you specify the ClassicLinkVPCId parameter, you must specify this parameter.
(string) --
string
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 .
string
The ID of the instance to use to create the launch configuration. The new launch configuration derives attributes from the instance, except for the block device mapping.
To create a launch configuration with a block device mapping or override any other instance attributes, specify them as part of the same request.
For more information, see Create a Launch Configuration Using an EC2 Instance in the Amazon EC2 Auto Scaling User Guide .
If you do not specify InstanceId , you must specify both ImageId and InstanceType .
string
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.
If you do not specify InstanceId , you must specify InstanceType .
string
The ID of the kernel associated with the AMI.
string
The ID of the RAM disk to select.
list
A block device mapping, which specifies the block devices for the instance. You can specify virtual devices and EBS volumes. For more information, see Block Device Mapping in the Amazon EC2 User Guide for Linux Instances .
(dict) --
Describes a block device mapping.
VirtualName (string) --
The name of the virtual device (for example, ephemeral0 ).
You can specify either VirtualName or Ebs , but not both.
DeviceName (string) -- [REQUIRED]
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 (dict) --
Parameters used to automatically set up EBS volumes when an instance is launched.
You can specify either VirtualName or Ebs , but not both.
SnapshotId (string) --
The snapshot ID of the volume to use.
You must specify either a VolumeSize or a SnapshotId .
VolumeSize (integer) --
The volume size, in Gibibytes (GiB).
This can be a number from 1-1,024 for standard , 4-16,384 for io1 , 1-16,384 for gp2 , and 500-16,384 for st1 and sc1 . If you specify a snapshot, the volume size must be equal to or larger than the snapshot size.
Default: If you create a volume from a snapshot and you don't specify a volume size, the default is the snapshot size.
You must specify either a VolumeSize or a SnapshotId . If you specify both SnapshotId and VolumeSize , the volume size must be equal or greater than the size of the snapshot.
VolumeType (string) --
The volume type, which can be standard for Magnetic, io1 for Provisioned IOPS SSD, gp2 for General Purpose SSD, st1 for Throughput Optimized HDD, or sc1 for Cold HDD. For more information, see Amazon EBS Volume Types in the Amazon EC2 User Guide for Linux Instances .
Valid Values: standard | io1 | gp2 | st1 | sc1
DeleteOnTermination (boolean) --
Indicates whether the volume is deleted on instance termination. For Amazon EC2 Auto Scaling, the default value is true .
Iops (integer) --
The number of I/O operations per second (IOPS) to provision for the volume. The maximum ratio of IOPS to volume size (in GiB) is 50:1. For more information, see Amazon EBS Volume Types in the Amazon EC2 User Guide for Linux Instances .
Required when the volume type is io1 . (Not used with standard , gp2 , st1 , or sc1 volumes.)
Encrypted (boolean) --
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.
Note
If you are creating a volume from a snapshot, you cannot specify an encryption value. Volumes that are created from encrypted snapshots are automatically encrypted, and volumes that are created from unencrypted snapshots are automatically unencrypted. By default, encrypted snapshots use the AWS managed CMK that is used for EBS encryption, but you can specify a custom CMK when you create the snapshot. The ability to encrypt a snapshot during copying also allows you to apply a new CMK to an already-encrypted snapshot. Volumes restored from the resulting copy are only accessible using the new CMK.
Enabling encryption by default results in all EBS volumes being encrypted with the AWS managed CMK or a customer managed CMK, whether or not the snapshot was encrypted.
For more information, see Using Encryption with EBS-Backed AMIs in the Amazon EC2 User Guide for Linux Instances and Required CMK Key Policy for Use with Encrypted Volumes in the Amazon EC2 Auto Scaling User Guide .
NoDevice (boolean) --
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 .
dict
Controls whether instances in this group are launched with detailed ( true ) or basic ( false ) monitoring.
The default value is true (enabled).
Warning
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 .
Enabled (boolean) --
If true , detailed monitoring is enabled. Otherwise, basic monitoring is enabled.
string
The maximum hourly price to be paid for any Spot Instance launched to fulfill the request. Spot Instances are launched when the price you specify exceeds the current Spot price. For more information, see Launching Spot Instances in Your Auto Scaling Group in the Amazon EC2 Auto Scaling User Guide .
Note
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.
string
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 .
boolean
Specifies whether the launch configuration is optimized for EBS I/O ( true ) or not ( false ). The optimization provides dedicated throughput to Amazon EBS and an optimized configuration stack to provide optimal I/O performance. This optimization is not available with all instance types. 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 .
boolean
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 you specify this parameter, you must specify at least one subnet for VPCZoneIdentifier when you create your group.
Note
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.
string
The tenancy of the instance. An instance with dedicated tenancy runs on isolated, single-tenant hardware and can only be launched into a VPC.
To launch dedicated instances into a shared tenancy VPC (a VPC with the instance placement tenancy attribute set to default ), you must set the value of this parameter to dedicated .
If you specify PlacementTenancy , you must specify at least one subnet for VPCZoneIdentifier when you create your group.
For more information, see Instance Placement Tenancy in the Amazon EC2 Auto Scaling User Guide .
Valid Values: default | dedicated
dict
The metadata options for the instances. For more information, see Instance Metadata and User Data in the Amazon EC2 User Guide for Linux Instances .
HttpTokens (string) --
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.
HttpPutResponseHopLimit (integer) --
The desired HTTP PUT response hop limit for instance metadata requests. The larger the number, the further instance metadata requests can travel.
Default: 1
Possible values: Integers from 1 to 64
HttpEndpoint (string) --
This parameter enables or disables the HTTP metadata endpoint on your instances. If the parameter is not specified, the default state is enabled .
Note
If you specify a value of disabled , you will not be able to access your instance metadata.
None
{'LaunchConfigurations': {'MetadataOptions': {'HttpEndpoint': 'disabled | '
'enabled',
'HttpPutResponseHopLimit': 'integer',
'HttpTokens': 'optional | '
'required'}}}
Describes one or more launch configurations.
See also: AWS API Documentation
Request Syntax
client.describe_launch_configurations(
LaunchConfigurationNames=[
'string',
],
NextToken='string',
MaxRecords=123
)
list
The launch configuration names. If you omit this parameter, all launch configurations are described.
(string) --
string
The token for the next set of items to return. (You received this token from a previous call.)
integer
The maximum number of items to return with this call. The default value is 50 and the maximum value is 100 .
dict
Response Syntax
{
'LaunchConfigurations': [
{
'LaunchConfigurationName': 'string',
'LaunchConfigurationARN': 'string',
'ImageId': 'string',
'KeyName': 'string',
'SecurityGroups': [
'string',
],
'ClassicLinkVPCId': 'string',
'ClassicLinkVPCSecurityGroups': [
'string',
],
'UserData': 'string',
'InstanceType': 'string',
'KernelId': 'string',
'RamdiskId': 'string',
'BlockDeviceMappings': [
{
'VirtualName': 'string',
'DeviceName': 'string',
'Ebs': {
'SnapshotId': 'string',
'VolumeSize': 123,
'VolumeType': 'string',
'DeleteOnTermination': True|False,
'Iops': 123,
'Encrypted': True|False
},
'NoDevice': True|False
},
],
'InstanceMonitoring': {
'Enabled': True|False
},
'SpotPrice': 'string',
'IamInstanceProfile': 'string',
'CreatedTime': datetime(2015, 1, 1),
'EbsOptimized': True|False,
'AssociatePublicIpAddress': True|False,
'PlacementTenancy': 'string',
'MetadataOptions': {
'HttpTokens': 'optional'|'required',
'HttpPutResponseHopLimit': 123,
'HttpEndpoint': 'disabled'|'enabled'
}
},
],
'NextToken': 'string'
}
Response Structure
(dict) --
LaunchConfigurations (list) --
The launch configurations.
(dict) --
Describes a launch configuration.
LaunchConfigurationName (string) --
The name of the launch configuration.
LaunchConfigurationARN (string) --
The Amazon Resource Name (ARN) of the launch configuration.
ImageId (string) --
The ID of the Amazon Machine Image (AMI) to use to launch your EC2 instances.
For more information, see Finding an AMI in the Amazon EC2 User Guide for Linux Instances .
KeyName (string) --
The name of the key pair.
For more information, see Amazon EC2 Key Pairs in the Amazon EC2 User Guide for Linux Instances .
SecurityGroups (list) --
A list that contains the security groups to assign to the instances in the Auto Scaling group.
For more information, see Security Groups for Your VPC in the Amazon Virtual Private Cloud User Guide .
(string) --
ClassicLinkVPCId (string) --
The ID of a ClassicLink-enabled VPC to link your EC2-Classic instances to.
For more information, see ClassicLink in the Amazon EC2 User Guide for Linux Instances and Linking EC2-Classic Instances to a VPC in the Amazon EC2 Auto Scaling User Guide .
ClassicLinkVPCSecurityGroups (list) --
The IDs of one or more security groups for the VPC specified in ClassicLinkVPCId .
For more information, see ClassicLink in the Amazon EC2 User Guide for Linux Instances and Linking EC2-Classic Instances to a VPC in the Amazon EC2 Auto Scaling User Guide .
(string) --
UserData (string) --
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 .
InstanceType (string) --
The instance type for the instances.
For information about available instance types, see Available Instance Types in the Amazon EC2 User Guide for Linux Instances.
KernelId (string) --
The ID of the kernel associated with the AMI.
RamdiskId (string) --
The ID of the RAM disk associated with the AMI.
BlockDeviceMappings (list) --
A block device mapping, which specifies the block devices for the instance.
For more information, see Block Device Mapping in the Amazon EC2 User Guide for Linux Instances .
(dict) --
Describes a block device mapping.
VirtualName (string) --
The name of the virtual device (for example, ephemeral0 ).
You can specify either VirtualName or Ebs , but not both.
DeviceName (string) --
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 (dict) --
Parameters used to automatically set up EBS volumes when an instance is launched.
You can specify either VirtualName or Ebs , but not both.
SnapshotId (string) --
The snapshot ID of the volume to use.
You must specify either a VolumeSize or a SnapshotId .
VolumeSize (integer) --
The volume size, in Gibibytes (GiB).
This can be a number from 1-1,024 for standard , 4-16,384 for io1 , 1-16,384 for gp2 , and 500-16,384 for st1 and sc1 . If you specify a snapshot, the volume size must be equal to or larger than the snapshot size.
Default: If you create a volume from a snapshot and you don't specify a volume size, the default is the snapshot size.
You must specify either a VolumeSize or a SnapshotId . If you specify both SnapshotId and VolumeSize , the volume size must be equal or greater than the size of the snapshot.
VolumeType (string) --
The volume type, which can be standard for Magnetic, io1 for Provisioned IOPS SSD, gp2 for General Purpose SSD, st1 for Throughput Optimized HDD, or sc1 for Cold HDD. For more information, see Amazon EBS Volume Types in the Amazon EC2 User Guide for Linux Instances .
Valid Values: standard | io1 | gp2 | st1 | sc1
DeleteOnTermination (boolean) --
Indicates whether the volume is deleted on instance termination. For Amazon EC2 Auto Scaling, the default value is true .
Iops (integer) --
The number of I/O operations per second (IOPS) to provision for the volume. The maximum ratio of IOPS to volume size (in GiB) is 50:1. For more information, see Amazon EBS Volume Types in the Amazon EC2 User Guide for Linux Instances .
Required when the volume type is io1 . (Not used with standard , gp2 , st1 , or sc1 volumes.)
Encrypted (boolean) --
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.
Note
If you are creating a volume from a snapshot, you cannot specify an encryption value. Volumes that are created from encrypted snapshots are automatically encrypted, and volumes that are created from unencrypted snapshots are automatically unencrypted. By default, encrypted snapshots use the AWS managed CMK that is used for EBS encryption, but you can specify a custom CMK when you create the snapshot. The ability to encrypt a snapshot during copying also allows you to apply a new CMK to an already-encrypted snapshot. Volumes restored from the resulting copy are only accessible using the new CMK.
Enabling encryption by default results in all EBS volumes being encrypted with the AWS managed CMK or a customer managed CMK, whether or not the snapshot was encrypted.
For more information, see Using Encryption with EBS-Backed AMIs in the Amazon EC2 User Guide for Linux Instances and Required CMK Key Policy for Use with Encrypted Volumes in the Amazon EC2 Auto Scaling User Guide .
NoDevice (boolean) --
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 .
InstanceMonitoring (dict) --
Controls whether instances in this group are launched with detailed ( true ) or basic ( false ) monitoring.
For more information, see Configure Monitoring for Auto Scaling Instances in the Amazon EC2 Auto Scaling User Guide .
Enabled (boolean) --
If true , detailed monitoring is enabled. Otherwise, basic monitoring is enabled.
SpotPrice (string) --
The maximum hourly price to be paid for any Spot Instance launched to fulfill the request. Spot Instances are launched when the price you specify exceeds the current Spot price.
For more information, see Launching Spot Instances in Your Auto Scaling Group in the Amazon EC2 Auto Scaling User Guide .
IamInstanceProfile (string) --
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 .
CreatedTime (datetime) --
The creation date and time for the launch configuration.
EbsOptimized (boolean) --
Specifies whether the launch configuration is optimized for EBS I/O ( true ) or not ( false ).
For more information, see Amazon EBS-Optimized Instances in the Amazon EC2 User Guide for Linux Instances .
AssociatePublicIpAddress (boolean) --
For Auto Scaling groups that are running in a VPC, specifies whether to assign a public IP address to the group's instances.
For more information, see Launching Auto Scaling Instances in a VPC in the Amazon EC2 Auto Scaling User Guide .
PlacementTenancy (string) --
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.
For more information, see Instance Placement Tenancy in the Amazon EC2 Auto Scaling User Guide .
MetadataOptions (dict) --
The metadata options for the instances. For more information, see Instance Metadata and User Data in the Amazon EC2 User Guide for Linux Instances .
HttpTokens (string) --
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.
HttpPutResponseHopLimit (integer) --
The desired HTTP PUT response hop limit for instance metadata requests. The larger the number, the further instance metadata requests can travel.
Default: 1
Possible values: Integers from 1 to 64
HttpEndpoint (string) --
This parameter enables or disables the HTTP metadata endpoint on your instances. If the parameter is not specified, the default state is enabled .
Note
If you specify a value of disabled , you will not be able to access your instance metadata.
NextToken (string) --
A string that indicates that the response contains more items than can be returned in a single response. To receive additional items, specify this string for the NextToken value when requesting the next set of items. This value is null when there are no more items to return.