ModifyLaunchTemplateDefaultVersion - Elastic Compute Service

Changes the default version of a launch template. When you call this operation, you can specify DefaultVersionNumber in the request. If you do not specify a version when you create Elastic Compute Service (ECS) instances based on a launch template, the default version of the launch template is used.

Operation description

Debugging

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Debugging

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Debug

Authorization information

The following table shows the authorization information corresponding to the API. The authorization information can be used in the Action policy element to grant a RAM user or RAM role the permissions to call this API operation. Description:

Operation: the value that you can use in the Action element to specify the operation on a resource.
Access level: the access level of each operation. The levels are read, write, and list.
Resource type: the type of the resource on which you can authorize the RAM user or the RAM role to perform the operation. Take note of the following items:
- The required resource types are displayed in bold characters.
- If the permissions cannot be granted at the resource level, All Resources is used in the Resource type column of the operation.
Condition Key: the condition key that is defined by the cloud service.
Associated operation: other operations that the RAM user or the RAM role must have permissions to perform to complete the operation. To complete the operation, the RAM user or the RAM role must have the permissions to perform the associated operations.

Operation	Access level	Resource type	Condition key	Associated operation
ecs:ModifyLaunchTemplateDefaultVersion	update	All Resources ``	none	none

Request parameters

Parameter	Type	Required	Description	Example
RegionId	string	Yes	The region ID of the launch template. You can call the DescribeRegions operation to query the most recent region list.	cn-hangzhou
LaunchTemplateId	string	No	The ID of the launch template. You must specify the LaunchTemplateId or LaunchTemplateName parameter to determine an instance launch template.	lt-s-bp177juajht6****
LaunchTemplateName	string	No	The name of the instance launch template. You must specify the LaunchTemplateId or LaunchTemplateName parameter to determine an instance launch template.	testLaunchTemplateName
DefaultVersionNumber	long	Yes	The default version number of the instance launch template.	2

Response parameters

Parameter	Type	Description	Example
	object
RequestId	string	The ID of the request.	473469C7-AA6F-4DC5-B3DB-A3DC0DE3C83E
LaunchTemplateId	string	The ID of the launch template. For more information, see DescribeLaunchTemplates .	lt-bp1apo0bbbkuy0rj****

Examples

Sample success responses

JSONformat

{
  "RequestId": "473469C7-AA6F-4DC5-B3DB-A3DC0DE3C83E",
  "LaunchTemplateId": "lt-bp1apo0bbbkuy0rj****"
}

Error codes

HTTP status code	Error code	Error message	Description
400	InvalidRegion.NotExist	%s	The specified region does not exist.
400	MissingParameter	%s	A parameter is not specified.
400	InvalidParameter	%s	The specified parameter is invalid.
403	InnerServiceFailed	%s	An internal service cannot be called.
404	InvalidLaunchTemplate.NotFound	%s	The specified launch template does not exist. Check whether the parameter value is correct.
404	InvalidLaunchTemplateVersion.NotFound	%s	The specified version of the launch template does not exist. Check whether the parameter values are correct.

For a list of error codes, visit the Service error codes.

Change history

Change time	Summary of changes	Operation
2023-03-10	The Error code has changed. The response structure of the API has changed	View Change Details