Help Center/ TaurusDB/ API Reference/ APIs (Recommended)/ Database User Management/ Granting Permissions to a Database User
Updated on 2026-01-05 GMT+08:00
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Granting Permissions to a Database User

Function

This API is used to grant permissions to a database user. Before calling this API:

Calling Method

For details, see Calling APIs.

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 following identity policy-based permissions are required.

    Action

    Access Level

    Resource Type (*: required)

    Condition Key

    Alias

    Dependency

    gaussdbformysql:user:grantPrivilege

    Write

    instance *

    • g:EnterpriseProjectId

    • g:ResourceTag/<tag-key>

    gaussdb:user:grantPrivilege

    -

URI

POST /v3/{project_id}/instances/{instance_id}/db-users/privilege

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 contains 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 contains 36 characters with a suffix of in07. Only letters and digits are allowed.

Default Value

N/A

Request Parameters

Table 2 Request header parameters

Parameter

Mandatory

Type

Description

X-Auth-Token

Yes

String

Definition

User token. To obtain this value, call the IAM API for obtaining a user token.

The value of X-Subject-Token in the response header is the token value.

Constraints

N/A

Range

N/A

Default Value

N/A

X-Language

No

String

Definition

Request language type.

Constraints

N/A

Range

  • en-us

  • zh-cn

Default Value

en-us
Table 3 Request body parameter

Parameter

Mandatory

Type

Description

users

Yes

Array of GrantDatabasePermission objects

Definition

List of database users.

Constraints

The list can contain a maximum of 50 database users.
Table 4 GrantDatabasePermission

Parameter

Mandatory

Type

Description

name

Yes

String

Definition

Database username.

Constraints

The value must be the username of the current instance.

Range

The username can consist of 1 to 32 characters. Only letters, digits, and underscores (_) are allowed.

Default Value

N/A

host

Yes

String

Definition

Host IP address.

Constraints

N/A

Range

  • If the value is %, all IP addresses are allowed to access your TaurusDB instance.

  • If the value is 10.10.10.%, all IP addresses in the subnet 10.10.10.X are allowed to access your TaurusDB instance.

  • To specify multiple IP addresses, separate them with commas (,), for example, 192.168.0.1,172.16.213.9 (no spaces before or after the comma).

Default Value

%

databases

Yes

Array of DatabasePermission objects

Definition

List of database permissions. The list contains up to 50 database permissions.

Constraints

N/A
Table 5 DatabasePermission

Parameter

Mandatory

Type

Description

name

Yes

String

Definition

Database name.

Constraints

N/A

Range

The database name can consist of 1 to 32 characters. Only letters, digits, and underscores (_) are allowed.

If the value is *, the account is authorized for all databases.

Default Value

N/A

readonly

Yes

Boolean

Definition

Whether the permission is read-only.

Constraints

N/A

Range

  • true: read-only

  • false: read/write

Default Value

N/A

Response Parameters

Status code: 201

Table 6 Response body parameter

Parameter

Type

Description

job_id

String

Definition

ID of the task for granting permissions to a user.

Range

N/A

Status code: 400

Table 7 Response body parameters

Parameter

Type

Description

error_code

String

Error code.

error_msg

String

Error message.

Status code: 500

Table 8 Response body parameters

Parameter

Type

Description

error_code

String

Error code.

error_msg

String

Error message.

Example Request

Granting the read/write permission to a database user

POST https://{endpoint}/v3/054e292c9880d4992f02c0196d3ea468/instances/a23fb62bd61e4e9e9636fd2225f395bein07/db-users/privilege
{
  "users" : [ {
    "name" : "gaussdb_mysql_user1",
    "host" : "127.0.0.1",
    "databases" : [ {
      "name" : "test",
      "readonly" : false
    } ]
  } ]
}

Example Response

Status code: 201

Success.

{
  "job_id" : "dff1d289-4d03-4942-8b9f-463ea07c000d"
}

SDK Sample Code

The SDK sample code is as follows.

  • Granting the read/write permission to a database user

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    package com.huaweicloud.sdk.test;

import com.huaweicloud.sdk.core.auth.ICredential;
import com.huaweicloud.sdk.core.auth.BasicCredentials;
import com.huaweicloud.sdk.core.exception.ConnectionException;
import com.huaweicloud.sdk.core.exception.RequestTimeoutException;
import com.huaweicloud.sdk.core.exception.ServiceResponseException;
import com.huaweicloud.sdk.gaussdb.v3.region.GaussDBRegion;
import com.huaweicloud.sdk.gaussdb.v3.*;
import com.huaweicloud.sdk.gaussdb.v3.model.*;

import java.util.List;
import java.util.ArrayList;

public class AddDatabasePermissionSolution {

    public static void main(String[] args) {
        // The AK and SK used for authentication are hard-coded or stored in plaintext, which has great security risks. It is recommended that the AK and SK be stored in ciphertext in configuration files or environment variables and decrypted during use to ensure security.
        // In this example, AK and SK are stored in environment variables for authentication. Before running this example, set environment variables CLOUD_SDK_AK and CLOUD_SDK_SK in the local environment
        String ak = System.getenv("CLOUD_SDK_AK");
        String sk = System.getenv("CLOUD_SDK_SK");
        String projectId = "{project_id}";

        ICredential auth = new BasicCredentials()
                .withProjectId(projectId)
                .withAk(ak)
                .withSk(sk);

        GaussDBClient client = GaussDBClient.newBuilder()
                .withCredential(auth)
                .withRegion(GaussDBRegion.valueOf("<YOUR REGION>"))
                .build();
        AddDatabasePermissionRequest request = new AddDatabasePermissionRequest();
        request.withInstanceId("{instance_id}");
        GrantDatabasePermissionRequestBody body = new GrantDatabasePermissionRequestBody();
        List<DatabasePermission> listUsersDatabases = new ArrayList<>();
        listUsersDatabases.add(
            new DatabasePermission()
                .withName("test")
                .withReadonly(false)
        );
        List<GrantDatabasePermission> listbodyUsers = new ArrayList<>();
        listbodyUsers.add(
            new GrantDatabasePermission()
                .withName("gaussdb_mysql_user1")
                .withHost("127.0.0.1")
                .withDatabases(listUsersDatabases)
        );
        body.withUsers(listbodyUsers);
        request.withBody(body);
        try {
            AddDatabasePermissionResponse response = client.addDatabasePermission(request);
            System.out.println(response.toString());
        } catch (ConnectionException e) {
            e.printStackTrace();
        } catch (RequestTimeoutException e) {
            e.printStackTrace();
        } catch (ServiceResponseException e) {
            e.printStackTrace();
            System.out.println(e.getHttpStatusCode());
            System.out.println(e.getRequestId());
            System.out.println(e.getErrorCode());
            System.out.println(e.getErrorMsg());
        }
    }
}

  • Granting the read-only permission to a database user

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    package com.huaweicloud.sdk.test;

import com.huaweicloud.sdk.core.auth.ICredential;
import com.huaweicloud.sdk.core.auth.BasicCredentials;
import com.huaweicloud.sdk.core.exception.ConnectionException;
import com.huaweicloud.sdk.core.exception.RequestTimeoutException;
import com.huaweicloud.sdk.core.exception.ServiceResponseException;
import com.huaweicloud.sdk.gaussdb.v3.region.GaussDBRegion;
import com.huaweicloud.sdk.gaussdb.v3.*;
import com.huaweicloud.sdk.gaussdb.v3.model.*;

import java.util.List;
import java.util.ArrayList;

public class AddDatabasePermissionSolution {

    public static void main(String[] args) {
        // The AK and SK used for authentication are hard-coded or stored in plaintext, which has great security risks. It is recommended that the AK and SK be stored in ciphertext in configuration files or environment variables and decrypted during use to ensure security.
        // In this example, AK and SK are stored in environment variables for authentication. Before running this example, set environment variables CLOUD_SDK_AK and CLOUD_SDK_SK in the local environment
        String ak = System.getenv("CLOUD_SDK_AK");
        String sk = System.getenv("CLOUD_SDK_SK");
        String projectId = "{project_id}";

        ICredential auth = new BasicCredentials()
                .withProjectId(projectId)
                .withAk(ak)
                .withSk(sk);

        GaussDBClient client = GaussDBClient.newBuilder()
                .withCredential(auth)
                .withRegion(GaussDBRegion.valueOf("<YOUR REGION>"))
                .build();
        AddDatabasePermissionRequest request = new AddDatabasePermissionRequest();
        request.withInstanceId("{instance_id}");
        GrantDatabasePermissionRequestBody body = new GrantDatabasePermissionRequestBody();
        List<DatabasePermission> listUsersDatabases = new ArrayList<>();
        listUsersDatabases.add(
            new DatabasePermission()
                .withName("test")
                .withReadonly(true)
        );
        List<GrantDatabasePermission> listbodyUsers = new ArrayList<>();
        listbodyUsers.add(
            new GrantDatabasePermission()
                .withName("gaussdb_mysql_user1")
                .withHost("127.0.0.1")
                .withDatabases(listUsersDatabases)
        );
        body.withUsers(listbodyUsers);
        request.withBody(body);
        try {
            AddDatabasePermissionResponse response = client.addDatabasePermission(request);
            System.out.println(response.toString());
        } catch (ConnectionException e) {
            e.printStackTrace();
        } catch (RequestTimeoutException e) {
            e.printStackTrace();
        } catch (ServiceResponseException e) {
            e.printStackTrace();
            System.out.println(e.getHttpStatusCode());
            System.out.println(e.getRequestId());
            System.out.println(e.getErrorCode());
            System.out.println(e.getErrorMsg());
        }
    }
}

  • Granting the read/write permission to a database user

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    # coding: utf-8

import os
from huaweicloudsdkcore.auth.credentials import BasicCredentials
from huaweicloudsdkgaussdb.v3.region.gaussdb_region import GaussDBRegion
from huaweicloudsdkcore.exceptions import exceptions
from huaweicloudsdkgaussdb.v3 import *

if __name__ == "__main__":
    # The AK and SK used for authentication are hard-coded or stored in plaintext, which has great security risks. It is recommended that the AK and SK be stored in ciphertext in configuration files or environment variables and decrypted during use to ensure security.
    # In this example, AK and SK are stored in environment variables for authentication. Before running this example, set environment variables CLOUD_SDK_AK and CLOUD_SDK_SK in the local environment
    ak = os.environ["CLOUD_SDK_AK"]
    sk = os.environ["CLOUD_SDK_SK"]
    projectId = "{project_id}"

    credentials = BasicCredentials(ak, sk, projectId)

    client = GaussDBClient.new_builder() \
        .with_credentials(credentials) \
        .with_region(GaussDBRegion.value_of("<YOUR REGION>")) \
        .build()

    try:
        request = AddDatabasePermissionRequest()
        request.instance_id = "{instance_id}"
        listDatabasesUsers = [
            DatabasePermission(
                name="test",
                readonly=False
            )
        ]
        listUsersbody = [
            GrantDatabasePermission(
                name="gaussdb_mysql_user1",
                host="127.0.0.1",
                databases=listDatabasesUsers
            )
        ]
        request.body = GrantDatabasePermissionRequestBody(
            users=listUsersbody
        )
        response = client.add_database_permission(request)
        print(response)
    except exceptions.ClientRequestException as e:
        print(e.status_code)
        print(e.request_id)
        print(e.error_code)
        print(e.error_msg)

  • Granting the read-only permission to a database user

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    # coding: utf-8

import os
from huaweicloudsdkcore.auth.credentials import BasicCredentials
from huaweicloudsdkgaussdb.v3.region.gaussdb_region import GaussDBRegion
from huaweicloudsdkcore.exceptions import exceptions
from huaweicloudsdkgaussdb.v3 import *

if __name__ == "__main__":
    # The AK and SK used for authentication are hard-coded or stored in plaintext, which has great security risks. It is recommended that the AK and SK be stored in ciphertext in configuration files or environment variables and decrypted during use to ensure security.
    # In this example, AK and SK are stored in environment variables for authentication. Before running this example, set environment variables CLOUD_SDK_AK and CLOUD_SDK_SK in the local environment
    ak = os.environ["CLOUD_SDK_AK"]
    sk = os.environ["CLOUD_SDK_SK"]
    projectId = "{project_id}"

    credentials = BasicCredentials(ak, sk, projectId)

    client = GaussDBClient.new_builder() \
        .with_credentials(credentials) \
        .with_region(GaussDBRegion.value_of("<YOUR REGION>")) \
        .build()

    try:
        request = AddDatabasePermissionRequest()
        request.instance_id = "{instance_id}"
        listDatabasesUsers = [
            DatabasePermission(
                name="test",
                readonly=True
            )
        ]
        listUsersbody = [
            GrantDatabasePermission(
                name="gaussdb_mysql_user1",
                host="127.0.0.1",
                databases=listDatabasesUsers
            )
        ]
        request.body = GrantDatabasePermissionRequestBody(
            users=listUsersbody
        )
        response = client.add_database_permission(request)
        print(response)
    except exceptions.ClientRequestException as e:
        print(e.status_code)
        print(e.request_id)
        print(e.error_code)
        print(e.error_msg)

  • Granting the read/write permission to a database user

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    package main

import (
	"fmt"
	"github.com/huaweicloud/huaweicloud-sdk-go-v3/core/auth/basic"
    gaussdb "github.com/huaweicloud/huaweicloud-sdk-go-v3/services/gaussdb/v3"
	"github.com/huaweicloud/huaweicloud-sdk-go-v3/services/gaussdb/v3/model"
    region "github.com/huaweicloud/huaweicloud-sdk-go-v3/services/gaussdb/v3/region"
)

func main() {
    // The AK and SK used for authentication are hard-coded or stored in plaintext, which has great security risks. It is recommended that the AK and SK be stored in ciphertext in configuration files or environment variables and decrypted during use to ensure security.
    // In this example, AK and SK are stored in environment variables for authentication. Before running this example, set environment variables CLOUD_SDK_AK and CLOUD_SDK_SK in the local environment
    ak := os.Getenv("CLOUD_SDK_AK")
    sk := os.Getenv("CLOUD_SDK_SK")
    projectId := "{project_id}"

    auth := basic.NewCredentialsBuilder().
        WithAk(ak).
        WithSk(sk).
        WithProjectId(projectId).
        Build()

    client := gaussdb.NewGaussDBClient(
        gaussdb.GaussDBClientBuilder().
            WithRegion(region.ValueOf("<YOUR REGION>")).
            WithCredential(auth).
            Build())

    request := &model.AddDatabasePermissionRequest{}
	request.InstanceId = "{instance_id}"
	var listDatabasesUsers = []model.DatabasePermission{
        {
            Name: "test",
            Readonly: false,
        },
    }
	var listUsersbody = []model.GrantDatabasePermission{
        {
            Name: "gaussdb_mysql_user1",
            Host: "127.0.0.1",
            Databases: listDatabasesUsers,
        },
    }
	request.Body = &model.GrantDatabasePermissionRequestBody{
		Users: listUsersbody,
	}
	response, err := client.AddDatabasePermission(request)
	if err == nil {
        fmt.Printf("%+v\n", response)
    } else {
        fmt.Println(err)
    }
}

  • Granting the read-only permission to a database user

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    package main

import (
	"fmt"
	"github.com/huaweicloud/huaweicloud-sdk-go-v3/core/auth/basic"
    gaussdb "github.com/huaweicloud/huaweicloud-sdk-go-v3/services/gaussdb/v3"
	"github.com/huaweicloud/huaweicloud-sdk-go-v3/services/gaussdb/v3/model"
    region "github.com/huaweicloud/huaweicloud-sdk-go-v3/services/gaussdb/v3/region"
)

func main() {
    // The AK and SK used for authentication are hard-coded or stored in plaintext, which has great security risks. It is recommended that the AK and SK be stored in ciphertext in configuration files or environment variables and decrypted during use to ensure security.
    // In this example, AK and SK are stored in environment variables for authentication. Before running this example, set environment variables CLOUD_SDK_AK and CLOUD_SDK_SK in the local environment
    ak := os.Getenv("CLOUD_SDK_AK")
    sk := os.Getenv("CLOUD_SDK_SK")
    projectId := "{project_id}"

    auth := basic.NewCredentialsBuilder().
        WithAk(ak).
        WithSk(sk).
        WithProjectId(projectId).
        Build()

    client := gaussdb.NewGaussDBClient(
        gaussdb.GaussDBClientBuilder().
            WithRegion(region.ValueOf("<YOUR REGION>")).
            WithCredential(auth).
            Build())

    request := &model.AddDatabasePermissionRequest{}
	request.InstanceId = "{instance_id}"
	var listDatabasesUsers = []model.DatabasePermission{
        {
            Name: "test",
            Readonly: true,
        },
    }
	var listUsersbody = []model.GrantDatabasePermission{
        {
            Name: "gaussdb_mysql_user1",
            Host: "127.0.0.1",
            Databases: listDatabasesUsers,
        },
    }
	request.Body = &model.GrantDatabasePermissionRequestBody{
		Users: listUsersbody,
	}
	response, err := client.AddDatabasePermission(request)
	if err == nil {
        fmt.Printf("%+v\n", response)
    } else {
        fmt.Println(err)
    }
}

For SDK sample code of more programming languages, see the Sample Code tab in API Explorer. SDK sample code can be automatically generated.

Status Code

For details, see Status Codes.

Error Code

For details, see Error Codes.

Parent Topic: Database User Management