Creating a Log Stream¶

Function¶

This API is used to create a log stream in a specified log group.

URI¶

POST /v2/{project_id}/groups/{log_group_id}/streams

**Table 1** Path Parameters¶
Parameter	Mandatory	Type	Description
project_id	Yes	String	Project ID. For details about how to obtain a project ID, see Obtaining the Project ID, Account ID, Log Group ID, and Log Stream ID. Minimum: 32 Maximum: 32
log_group_id	Yes	String	Log group ID. For details about how to obtain a log group ID, see Obtaining the Project ID, Account ID, Log Group ID, and Log Stream ID. Minimum: 36 Maximum: 36

Request Parameters¶

**Table 2** Request header parameters¶
Parameter	Mandatory	Type	Description
X-Auth-Token	Yes	String	User token obtained from IAM. For details about how to obtain a user token, see Obtaining a User Token. Minimum: 1000 Maximum: 2000
Content-Type	Yes	String	Set this parameter to application/json;charset=UTF-8. Minimum: 30 Maximum: 30

**Table 3** Request body parameters¶
Parameter	Mandatory	Type	Description
log_stream_name	Yes	String	Name of the log stream to be created. Minimum: 1 Maximum: 64
ttl_in_days	No	Integer	Log retention duration. Minimum value: 1 Maximum value: 365
tags	No	Array of tagsBody objects	Tag field information.
log_stream_name_alias	No	String	Log stream alias. Minimum: 1 Maximum: 64
enterprise_project_name	No	String	Enterprise project name. Note A project name can only contain letters, digits, underscores (_), and hyphens (-). It cannot contain the word default in any form. The description can contain up to 512 characters. Minimum: 1 Maximum: 255

**Table 4** tagsBody¶
Parameter	Mandatory	Type	Description
key	Yes	String	Tag key. Use only UTF-8 letters, digits, spaces, and the following characters: .:=+-@. Do not start with an underscore (). Max 128 characters are allowed.
value	Yes	String	Tag value. Use only UTF-8 letters, digits, spaces, and the following characters: `_.:/=+-@.` Max 255 characters are allowed.

Response Parameters¶

Status code: 201

**Table 5** Response body parameters¶
Parameter	Type	Description
log_stream_id	String	ID of the created log stream.

Status code: 400

**Table 6** Response body parameters¶
Parameter	Type	Description
error_code	String	Error code.
error_msg	String	Error message.

Status code: 401

**Table 7** Response body parameters¶
Parameter	Type	Description
error_code	String	Error code.
error_msg	String	Error message.

Status code: 403

**Table 8** Response body parameters¶
Parameter	Type	Description
error_code	String	Error code.
error_msg	String	Error message.

Status code: 500

**Table 9** Response body parameters¶
Parameter	Type	Description
error_code	String	Error code.
error_msg	String	Error message.

Example Requests¶

Creating a log stream

POST https://{endpoint}/v2/{project_id}/groups/{log_group_id}/streams

{
  "log_stream_name" : "lts-stream-02kh"
}

Example Responses¶

Status code: 201

The request is successful and the log stream has been created.

{
  "log_stream_id" : "c54dbc58-0fd8-48ed-b007-6d54981427a7"
}

Status code: 400

BadRequest. The request is invalid. Modify the request based on the description in error_msg before a retry.

{
  "error_code" : "LTS.0009",
  "error_msg" : "Failed to validate the request body"
}

Status code: 401

AuthFailed. Authentication failed. Check the token and try again.

{
  "error_code" : "LTS.0003",
  "error_msg" : "Invalid token"
}

Status code: 403

Forbidden.The request has been rejected.The server has received the request and understood it, but refuses to respond to it. The client should not repeat the request without modifications.

{
  "error_code" : "LTS.0001",
  "error_msg" : "Invalid projectId"
}

Status code: 500

InternalServerError.

The server has received the request but encountered an internal error.

{
  "error_code" : "LTS.0202",
  "error_msg" : "Failed to create Log stream"
}

Status Codes¶

Status Code	Description
201	The request is successful and the log stream has been created.
400	BadRequest. The request is invalid. Modify the request based on the description in error_msg before a retry.
401	AuthFailed. Authentication failed. Check the token and try again.
403	Forbidden.The request has been rejected.The server has received the request and understood it, but refuses to respond to it. The client should not repeat the request without modifications.
500	InternalServerError. The server has received the request but encountered an internal error.

Error Codes¶

See Error Codes.

last updated: 2025-10-17 11:00 UTC - commit: 1aef8cbecb9139d36db154d6ff3015832882e151