Updated on 2026-08-25 GMT+08:00

Logging In to an Instance

Function

This API is used to log in to an instance. High-privilege accounts are preferred, and only the accounts whose passwords are saved can be used for login.

Authorization Information

Each account has all the permissions required to call all APIs, but IAM users must be assigned the required permissions.

If you are using role/policy-based authorization, see Permissions and Supported Actions for details on the required permissions.
If you are using identity policy-based authorization, the permission listed below is required.

Action

Access Level

Resource Type (*: required)

Condition Key

Alias

Dependencies

das::showCloudDBAInfo

read

-

-

-

-

Action	Access Level	Resource Type (*: required)	Condition Key	Alias	Dependencies
das::showCloudDBAInfo	read	-	-	-	-

URI

POST /v3/{project_id}/instances/{instance_id}/login

**Table 1** URI parameters
Parameter	Mandatory	Type	Description
project_id	Yes	String	Definition Project ID of a tenant in a region. To obtain the value, see Obtaining a Project ID. Constraints N/A Range The value can contain 32 characters. Only letters and digits are allowed. Default Value N/A
instance_id	Yes	String	Definition Instance ID, which uniquely identifies an instance. Constraints N/A Range The value can contain 32 characters. Only letters and digits are allowed. Default Value N/A

Request Parameters

None

Response Parameters

Status code: 200

**Table 2** Response body parameters
Parameter	Type	Description
connection_id	String	Definition Connection ID. Range N/A
instance_name	String	Definition Instance name. Range N/A
instance_id	String	Definition Instance ID. Range N/A
login_user	String	Definition Login username. Range N/A
database_name	String	Definition Name of the database to be logged in to. Range N/A
engine_type	String	Definition Engine type. Range N/A

Example Requests

POST https://das.cn-north-1.myhuaweicloud.com/v3/054e292c9880d4992f02c0196d3ea468/instances/bcfa975193f1402fa11a6d4fd6baf5fbin01/login

Example Responses

Status code: 200

Success.

{
    "connection_id": "f6ec61f9-24c5-4aaf-b42b-d45d23274031",
    "instance_name": "rds-sql-Do not delete 1.",
    "instance_id": "bcfa975193f1402fa11a6d4fd6baf5fbin01",
    "login_user": "rdsDasRead",
    "database_name": "",
    "engine_type": "mysql"
}

Status Codes

Status Code	Description
200	Success.
400	Client error.
500	Server error.

Error Codes

See Error Codes.

Parent topic: Intelligent O&M