Updated on 2026-01-08 GMT+08:00

Creating a Database User

Description

This API is used to create a database user for a specified instance.

Restrictions

  • This API applies only to DDS Community Edition.
  • This operation is not allowed if the DB instance is in any of the following statuses: creating, changing instance class, changing port, frozen, restarting, or abnormal.

URI

  • URI format

    POST https://{Endpoint}/v3/{project_id}/instances/{instance_id}/db-user

Table 1 Path parameters

Name

Type

IN

Mandatory

Description

project_id

string

path

Yes

Project ID of a tenant in a region. To obtain the project ID, see Obtaining a Project ID.

instance_id

string

path

Yes

Instance ID, which can be obtained by calling the API described in Querying Instances and Details. If you do not have an instance, call the API described in Creating a DB Instance to create one.

Request Parameters

Table 2 Request header parameters

Parameter

Type

IN

Mandatory

Description

X-Auth-Token

string

header

Yes

User token

Table 3 Parameter description

Parameter

Type

Mandatory

Description

user_name

String

Yes

The database username.

  • The value must be 1 to 64 characters and can contain only letters (from A to Z or from a to z), digits (from 0 to 9), hyphens (-), and periods (.).
  • The username cannot be an internal reserved username, such as drsFull or drsIncremental.

user_pwd

String

Yes

The password of the database user.

  • The value must be 8 to 32 characters in length and contain uppercase letters (A to Z), lowercase letters (a to z), digits (0 to 9), and special characters, such as ~!@#%^*-_=+?()$
  • Enter a strong password to improve security, preventing security risks such as brute force cracking.

roles

Array of Object

Yes

The role of the database user. For details, see Table 4.

roles restricts the permissions of the account. If an empty array is specified, the account does not have any permission.

db_name

String

No

The database where the new user is located. The default value is "admin".

The value must be 1 to 64 characters and can contain only letters (from A to Z or from a to z), digits (from 0 to 9), and underscores (_).

Table 4 roles field data structure description

Parameter

Type

Mandatory

Description

role_db_name

String

Yes

The name of the database to which the role granted to the new user belongs.

The value must be 1 to 64 characters and can contain only letters (from A to Z or from a to z), digits (from 0 to 9), and underscores (_).

role_name

String

Yes

The name of the role granted to the new user.

The value must be 1 to 64 characters and can contain only letters (from A to Z or from a to z), digits (from 0 to 9), hyphens (-), and periods (.).

  • Request example
    { 
        "user_name":"test" ,
        "user_pwd":"******",
        "roles":[{
            "role_db_name":"testDb" ,
            "role_name":"testRole"
         }],
        "db_name":"test_db"
    }

Response Parameters

  • Example response
    {}

Status Code

For details, see Status Code.

Error Code

For details, see Error Code.