Creates an instance launch template, or launch template for short. An instance launch template saves you the trouble of entering a large number of configuration parameters each time you create an instance.

Description

Instance launch templates contain configurations used to create instances, such as the instance region, image ID, instance type, security group ID, and Internet bandwidth settings. If you do not specify a certain instance configuration in the template, you must specify this configuration when creating an instance. When creating templates (CreateLaunchTemplate), the template version numbers start from 1. After creating one template, you can create multiple versions based on this template (CreateLaunchTemplateVersion). Version numbers start from 1 and increase sequentially. If you do not specify a template version number when creating an instance (RunInstances), default version is used.

When you call this interface, consider the following:

  • You can create up to 30 instance launch templates per region. Each template can have up to 30 versions.

  • Most instance launch template parameters are optional. When you create a template, ECS does not verify the existence or validity of its parameter values. The validity of parameter values is only verified when you create instances.

  • If you set a certain configuration in an instance launch template, you cannot filter out this configuration when creating an instance (RunInstances). For example, if you set HostName=LocalHost in the template and in RunInstances the value of HostName is null, the LocalHost still takes effect. If you want to overwrite the HostName=LocalHost configuration, set HostName=MyHost in RunInstances or other parameter values if you want.

Request parameters

Name Type Required Description
Action String Yes The name of this interface. Value: CreateLaunchTemplate.
RegionId String Yes Region ID of an instance. For more information, call DescribeRegions to obtain the latest region list.
LaunchTemplateName String Yes Instance launch template name. Can contain [2, 128] characters in length. It must start with an English letter (uppercase or lowercase) and can contain numbers, periods (.), colons (:), underscores (_), and hyphens (-). It cannot start with "http://" or "https://".
VersionDescription String No Description of instance launch template version 1. It can be [2, 256] characters in length. It cannot start with "http://" or "https://". The default value is null.
ImageId String No Image ID.
InstanceType String No Instance type. For more information, call DescribeInstanceTypes to obtain the latest instance type list.
SecurityGroupId String No The security group ID.
NetworkType String No Network type of the instance. Value options: Classic | VPC.
VSwitchId String No When creating a VPC-Connected instance, you must specify its VSwitch ID.
InstanceName String No The name of the instance. The name is a string of 2 to 128 characters. It must begin with an English or a Chinese character. It can contain A-Z, a-z, Chinese characters, numbers, periods (.), colons (:), underscores (_), and hyphens (-).
Description String No Instance description.
InternetMaxBandwidthIn String No The maximum inbound bandwidth from the Internet network, measured in Mbit/s. Value range: [1, 200].
InternetMaxBandwidthOut String No Maximum outbound bandwidth from the Internet, its unit of measurement is Mbit/s. Value range: [0, 100].
HostName String No Instance host name.
  • It cannot start or end with a period (.) or a hyphen (-) and it cannot have two or more consecutive periods (.) or hyphens (-).
  • For Windows: The host name can be [2, 15] characters in length. It can contain A-Z, a-z, numbers, periods (.), and hyphens (-). It cannot only contain numbers.
  • For other operating systems: The host name can be [2, 64] characters in length. It can be segments separated by periods (.). It can contain A-Z, a-z, numbers, and hyphens (-).
ZoneId String No The zone ID of the instance.
SystemDisk.Category String No The category of the system disk. System disk type. Optional values:
  • Cloud: Basic cloud disk.
  • cloud_efficiency: Ultra cloud disk.
  • cloud_ssd: SSD Cloud Disks.
  • ephemeral_ssd: Ephemeral SSD.
SystemDisk.Size Integer No Size of the system disk, measured in GB. Value range: [20, 500].
SystemDisk.DiskName String No System disk name. The name is a string of 2 to 128 characters. It must begin with an English or a Chinese character. It can contain A-Z, a-z, Chinese characters, numbers, periods (.), colons (:), underscores (_), and hyphens (-).
SystemDisk.Description String No System disk description. It cannot begin with http:// or https://.
DataDisk.n.Category String No The data disk type. Value range of n: [1, 16]. Optional values
  • Cloud: Basic cloud disk.
  • cloud_efficiency: Ultra cloud disk.
  • cloud_ssd: SSD Cloud Disks.
  • ephemeral_ssd: Ephemeral SSD.
DataDisk.n.Size Integer No The data disk capacity. Value range of n: [1, 16]. Value range:
  • cloud: [5, 2000]
  • cloud_efficiency: [20, 32768]
  • cloud_ssd: [20, 32768]
  • ephemeral_ssd: [5, 800]
DataDisk.n.SnapshotId String No The snapshot used to create the data disk. Value range of n: [1, 16].
DataDisk.n.Encrypted Boolean No The data disk capacity. Value range of n: [1, 16].
DataDisk.n.DiskName String No The data disk name. Value range of n: [1, 16].
DataDisk.n.Description String No Description of a data disk. The valid range of n is [1, 16].
DataDisk.n.DeleteWithInstance String No Whether the data disk is released with its instance. Value range of n: [1, 16].
IoOptimized String No Whether it is an I/O-optimized instance or not. Optional values:
  • none
  • optimized
NetworkInterface.1.PrimaryIpAddress String No The primary private IP address of the ENI.
NetworkInterface.1.VSwitchId String No The VSwitch ID for ENI. The instance must be in the same zone of the same VPC network as the ENI, but they may belong to different VSwitches.
NetworkInterface.1.SecurityGroupId String No The security group ID must be one in the same VPC.
NetworkInterface.1.NetworkInterfaceName String No ENI name.
NetworkInterface.1.Description String No The ENI description.
InternetChargeType String No Internet bandwidth billing method. Optional values: PayByTraffic
UserData String No User data of the instance, which is Base64-encoded. Size of the raw data cannot exceed 16 KB.
KeyPairName String No The name of the key pair.
  • Ignore this parameter for Windows instances. It is null by default. Even if you enter this parameter, only the  Password content is used.
  • The password logon method for Linux instances is set to forbidden upon initialization.
RamRoleName String No The RAM role name of the instance. You can use the RAM API ListRoles to query instance RAM role names.
AutoReleaseTime String No Instance auto release time. The time is presented using the ISO8601 standard and in UTC time. The format is  YYYY-MM-DDTHH:MM:SSZ. 
SpotStrategy String No The spot strategy for a Pay-As-You-Go instance. This parameter is valid and required only when InstanceChargeType is set to PostPaid. Value range:
  • NoSpot: Normal Pay-As-You-Go instance.
  • SpotWithPriceLimit: Sets the maximum price for a spot instance.
  • SpotAsPriceGo: The system automatically calculates the price. The maximum value is the Pay-As-You-Go price.
SpotPriceLimit Float No Sets the maximum hourly instance price. Supports up to three decimal places.
SecurityEnhancementStrategy String No Whether or not to activate the security enhancement feature and install network security software free of charge. Optional values: Active | Deactive.
Tag.n.Key String  No  This tag applies to instance, disk, security group, or image. The key of a tag of which n is from 1 to 20. Once you use this parameter, it cannot be a null string. It can be up to 64 characters in length. It cannot begin with "aliyun", "acs:", "http://", or "https://".
Tag.n.Value String  No  This tag applies to instance, disk, security group, or image. The value of a tag of which n is a number from 1 to 20. Once you use this parameter, it can be a null string. It can be up to 128 characters in length. It cannot begin with "aliyun", "acs:", "http://", or "https://".
TemplateTag.n.Key String  No  This tag applies to launch template. The key of a tag of which n is from 1 to 20. Once you use this parameter, it cannot be a null string. It can be up to 64 characters in length. It cannot begin with "aliyun", "acs:", "http://", or "https://".
TemplateTag.n.Value String  No  This tag applies to launch template. The value of a tag of which n is a number from 1 to 20. Once you use this parameter, it can be a null string. It can be up to 128 characters in length. It cannot begin with "aliyun", "acs:", "http://", or "https://".

Response parameters

Name Type Description
LaunchTemplateId String The launch instance template ID.

Examples

Request example 
https://ecs.aliyuncs.com/?Action=CreateLaunchTemplate
&RegionId=cn-hangzhou
&LaunchTemplateName=lt-name1
&InstanceType=ecs.cm4.6xlarge
&SecurityGroupId=sg-securitygroupid
&<Common Response Parameters>
Response example

XML format

<CreateLaunchTemplateResponse>
    <RequestId>04F0F334-1335-436C-A1D7-6C044FExxxxx</RequestId>
    <LaunchTemplateId>lt-m5eiaupmvm2op9dxxxxx</LaunchTemplateId>
</CreateLaunchTemplateResponse>
JSON format 
{
    "RequestId": "04F0F334-1335-436C-A1D7-6C044FExxxxx",
    "LaunchTemplateId": "lt-m5eiaupmvm2op9dxxxxx"
}

Error codes

The following error codes are specific to this interface. For more error codes, visit the API error center.

Error code Error messages HTTP status code  Description
MissingParameter The input parameter that is required for processing this request is not supplied. 400 A required parameter is missing.
InvalidParameter the parameter(s) provided is(are) invalid. 400 The specified parameter is invalid.
InvalidLaunchTemplateName.Malformed The specified parameter LaunchTemplateName is not valid. 400 The specified LaunchTemplateName is invalid.
InvalidDescription.Malformed The specified parameter “VersionDescription” is not valid. 400 The specified VersionDescription is invalid.
InvalidUserData.SizeExceeded The specified parameter UserData exceeds the size. 400 The raw UserData exceeds 16 KB.
InvalidUserData.Base64FormatInvalid The specified parameter UserData must be base64 encoded. 400 UserData must be Base64-encoded.
LaunchTemplateLimitExceed The maximum number of templates is exceeded. 403 You can create up to 30 instance launch templates per region.
LaunchTemplateName.Duplicated The specified LaunchTemplateName “{0}” already exist. 403 The specified LaunchTemplateName already exists.
InnerServiceFailed call inner service failed 403 An internal server error.