Modifying a Database User

Function

This API is used to change the username and password for a registered database user on DAS. This API does not change the username and password of the database user object on the DB instance. Ensure that the entered username and password are valid. Currently, only MySQL instances are supported.

Authorization Information

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

If you are using role/policy-based authorization, see the required permissions in Permissions Policies and Supported Actions.

If you are using identity policy-based authorization, the following identity policy-based permissions are required.

Action	Access Level	Resource Type (*: required)	Condition Key	Alias	Dependencies
das:clouddba:modifyDbUser	Write	Instance	-	-	-

URI

PUT /v3/{project_id}/instances/{instance_id}/db-users/{db_user_id}

**Table 1** URI parameters
Parameter	Mandatory	Type	Description
project_id	Yes	String	Definition Project ID of a tenant in a region To obtain this 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 Unique ID of an instance Constraints N/A Range The value can contain 32 characters. Only letters and digits are allowed. Default Value N/A
db_user_id	Yes	String	Definition Database user ID, that is, ID of a connection established between the database account and the database. A database user ID is created by calling the API in Creating a Database User. Constraints N/A Range The value is a UUID containing 36 characters. Only letters, digits, and hyphens (-) are allowed. Default Value N/A

Request Parameters

**Table 2** Request body parameters
Parameter	Mandatory	Type	Description
db_username	Yes	String	Definition Database username Constraints N/A Range N/A Default Value N/A
db_user_password	Yes	String	Definition Database user password Constraints N/A Range N/A Default Value N/A

Response Parameters

Status code: 200

**Table 3** Response body parameters
Parameter	Type	Description
result	String	Definition Modification result. If the modification is successful, OK is returned. Range OK

Example Requests

Changing the database username to user

PUT https://das.cn-north-1.myhuaweicloud.com/v3/054e292c9880d4992f02c0196d3ea468/instances/da304cd5bbb944de828759bc7be3d3fein01/db-users/24c0c455-1f0e-448b-acb2-6e184b4ffcfa

{
  "db_username" : "user",
  "db_user_password" : "password"
}