Updated on 2024-04-18 GMT+08:00

Introduction

This section describes fine-grained permissions management for your GaussDB(DWS) service using IAM. You can skip this section if your HUAWEI CLOUD account already satisfies your needs.

By default, new IAM users do not have permissions assigned. You need to add the users to one or more groups, and attach permissions policies or roles to these groups. Users inherit permissions from the groups to which they are added and can perform specified operations on cloud services based on the permissions. Users are authorized by creating custom policies. For detailed operations, see Creating a GaussDB(DWS) Custom Policy.

You can grant users permissions by using Roles and Policies. Roles are provided by IAM to define service-based permissions depending on users' job responsibilities. Policies define API-based permissions for operations on specific resources under certain conditions, allowing for more fine-grained, secure access control of cloud resources.

Policy-based authorization is useful if you want to allow or deny the access to an API.

An account has all the permissions required to call all APIs, but IAM users must be assigned the required permissions. The permissions required for calling an API are determined by the actions supported by the API. Only users who have been granted permissions allowing the actions can call the API successfully. For example, if an IAM user wants to query the GaussDB(DWS) cluster list using an API, the user must have been granted permissions that allow the dws:openAPICluster:list action.

Supported Actions

DWS provides system-defined policies that can be directly used in IAM. You can also create custom policies and use them to supplement system-defined policies, implementing more refined access control. Actions supported by policies are specific to APIs. The following are common concepts related to policies:

  • Permissions: Allow or deny operations on specified resources under specific conditions.
  • APIs: RESTful APIs that can be called in a custom policy.
  • Actions: Added to a custom policy to control permissions for specific operations.
  • IAM or enterprise projects: Type of projects for which an action will take effect. Policies that contain actions supporting both IAM and enterprise projects can be assigned to user groups and take effect in both IAM and Enterprise Management. Policies that only contain actions supporting IAM projects can be assigned to user groups and only take effect for IAM. Such policies will not take effect if they are assigned to user groups in Enterprise Management. For details about the differences between IAM and enterprise projects, see What Are the Differences Between IAM and Enterprise Management?.

    The check mark (√) indicates that an action takes effect. The cross mark (x) indicates that an action does not take effect.

GaussDB(DWS) supports the following actions that can be defined in custom policies:

Managing Clusters

Permissions

APIs

Actions

IAM Project

Enterprise Project

Creating clusters

POST /v1.0/{project_id}/clusters

dws:openAPICluster:create

x

Querying the cluster list

GET /v1.0/{project_id}/clusters

dws:openAPICluster:list

x

Querying cluster details

GET /v1.0/{project_id}/clusters/{cluster_id}

dws:openAPICluster:getDetail

x

Querying the node type

GET /v2/{project_id}/node-types

dws:openAPIFlavors:get

x

Deleting clusters

DELETE /v1.0/{project_id}/clusters/{cluster_id}

dws:openAPICluster:delete

x

Restarting clusters

POST /v1.0/{project_id}/clusters/{cluster_id}/restart

dws:openAPICluster:restart

x

Scales out a cluster.

POST /v1.0/{project_id}/clusters/{cluster_id}/resize

dws:cluster:scaleOutOrOpenAPIResize

x

Resetting the cluster's administrator password

POST /v1.0/{project_id}/clusters/{cluster_id}/reset-password

dws:openAPICluster:resetPassword

x

Start a cluster.

POST /v1/

{project_id}/clusters/{cluster_id}/start

dws:cluster:startCluster

×

Stopping a Cluster

POST /v1/{project_id}/clusters/{cluster_id}/stop

dws:cluster:stopCluster

×

In the current version, the APIs for starting and stopping a cluster are available only to clusters whose database type is serverless.

Managing Snapshots

Permissions

APIs

Actions

IAM Project

Enterprise Project

Creating snapshots

POST /v1.0/{project_id}/snapshots

dws:openAPISnapshot:create

x

Querying the snapshot list

GET /v1.0/{project_id}/snapshots

dws:openAPISnapshot:list

x

Querying snapshot details

GET /v1.0/{project_id}/snapshots/{snapshot_id}

dws:openAPISnapshot:detail

x

Deleting snapshots

DELETE /v1.0/{project_id}/snapshots/{snapshot_id}

dws:openAPISnapshot:delete

x

Restoring clusters

POST /v1.0/{project_id}/snapshots/{snapshot_id}/actions

dws:openAPISnapshot:restore

x