Compute
Elastic Cloud Server
Huawei Cloud Flexus
Bare Metal Server
Auto Scaling
Image Management Service
Dedicated Host
FunctionGraph
Cloud Phone Host
Huawei Cloud EulerOS
Networking
Virtual Private Cloud
Elastic IP
Elastic Load Balance
NAT Gateway
Direct Connect
Virtual Private Network
VPC Endpoint
Cloud Connect
Enterprise Router
Enterprise Switch
Global Accelerator
Management & Governance
Cloud Eye
Identity and Access Management
Cloud Trace Service
Resource Formation Service
Tag Management Service
Log Tank Service
Config
OneAccess
Resource Access Manager
Simple Message Notification
Application Performance Management
Application Operations Management
Organizations
Optimization Advisor
IAM Identity Center
Cloud Operations Center
Resource Governance Center
Migration
Server Migration Service
Object Storage Migration Service
Cloud Data Migration
Migration Center
Cloud Ecosystem
KooGallery
Partner Center
User Support
My Account
Billing Center
Cost Center
Resource Center
Enterprise Management
Service Tickets
HUAWEI CLOUD (International) FAQs
ICP Filing
Support Plans
My Credentials
Customer Operation Capabilities
Partner Support Plans
Professional Services
Analytics
MapReduce Service
Data Lake Insight
CloudTable Service
Cloud Search Service
Data Lake Visualization
Data Ingestion Service
GaussDB(DWS)
DataArts Studio
Data Lake Factory
DataArts Lake Formation
IoT
IoT Device Access
Others
Product Pricing Details
System Permissions
Console Quick Start
Common FAQs
Instructions for Associating with a HUAWEI CLOUD Partner
Message Center
Security & Compliance
Security Technologies and Applications
Web Application Firewall
Host Security Service
Cloud Firewall
SecMaster
Anti-DDoS Service
Data Encryption Workshop
Database Security Service
Cloud Bastion Host
Data Security Center
Cloud Certificate Manager
Edge Security
Managed Threat Detection
Blockchain
Blockchain Service
Web3 Node Engine Service
Media Services
Media Processing Center
Video On Demand
Live
SparkRTC
MetaStudio
Storage
Object Storage Service
Elastic Volume Service
Cloud Backup and Recovery
Storage Disaster Recovery Service
Scalable File Service Turbo
Scalable File Service
Volume Backup Service
Cloud Server Backup Service
Data Express Service
Dedicated Distributed Storage Service
Containers
Cloud Container Engine
SoftWare Repository for Container
Application Service Mesh
Ubiquitous Cloud Native Service
Cloud Container Instance
Databases
Relational Database Service
Document Database Service
Data Admin Service
Data Replication Service
GeminiDB
GaussDB
Distributed Database Middleware
Database and Application Migration UGO
TaurusDB
Middleware
Distributed Cache Service
API Gateway
Distributed Message Service for Kafka
Distributed Message Service for RabbitMQ
Distributed Message Service for RocketMQ
Cloud Service Engine
Multi-Site High Availability Service
EventGrid
Dedicated Cloud
Dedicated Computing Cluster
Business Applications
Workspace
ROMA Connect
Message & SMS
Domain Name Service
Edge Data Center Management
Meeting
AI
Face Recognition Service
Graph Engine Service
Content Moderation
Image Recognition
Optical Character Recognition
ModelArts
ImageSearch
Conversational Bot Service
Speech Interaction Service
Huawei HiLens
Video Intelligent Analysis Service
Developer Tools
SDK Developer Guide
API Request Signing Guide
Terraform
Koo Command Line Interface
Content Delivery & Edge Computing
Content Delivery Network
Intelligent EdgeFabric
CloudPond
Intelligent EdgeCloud
Solutions
SAP Cloud
High Performance Computing
Developer Services
ServiceStage
CodeArts
CodeArts PerfTest
CodeArts Req
CodeArts Pipeline
CodeArts Build
CodeArts Deploy
CodeArts Artifact
CodeArts TestPlan
CodeArts Check
CodeArts Repo
Cloud Application Engine
MacroVerse aPaaS
KooMessage
KooPhone
KooDrive

Roles

Updated on 2024-08-20 GMT+08:00

After a role is granted to a user through GRANT, the user will have all the permissions of the role. It is recommended that roles be used to efficiently grant permissions. For example, you can create different roles of design, development, and maintenance personnel, grant the roles to users, and then grant specific data permissions required by different users. When permissions are granted or revoked at the role level, these changes take effect on all members of the role.

GaussDB provides an implicitly defined group PUBLIC that contains all roles. By default, all new users and roles have the permissions of PUBLIC. For details about the default permissions of PUBLIC, see GRANT. To revoke permissions of PUBLIC from a user or role, or re-grant these permissions to them, add the PUBLIC keyword in the REVOKE or GRANT statement.

To view all roles, query the system catalog PG_ROLES.

1
SELECT * FROM PG_ROLES;

Adding, Modifying, and Deleting Roles

In scenarios other than Separation of Duties, a role can be created, modified, and deleted only by a system administrator or a user with the CREATEROLE attribute. In separation-of-duties scenarios, a role can be created, modified, and deleted only by an initial user or a user with the CREATEROLE attribute.

  • To create a role, use CREATE ROLE.
  • To add or delete users in an existing role, use ALTER ROLE.
  • To delete a role, use DROP ROLE. DROP ROLE deletes only a role, rather than member users in the role.

Built-in Roles

GaussDB provides a group of default roles whose names start with gs_role_. These roles are provided to access to specific, typically high-privileged operations. You can grant these roles to other users or roles within the database so that they can use specific functions. These roles should be given with great care to ensure that they are used where they are needed. Table 1 describes the permissions of built-in roles.

Table 1 Permission description of built-in roles

Roles

Permission

gs_role_signal_backend

Permission to call the pg_cancel_backend, pg_terminate_backend, and pg_terminate_session functions to cancel or terminate other sessions. However, this role cannot perform operations on sessions of the initial user or PERSISTENCE user.

gs_role_tablespace

Permission to create a tablespace.

gs_role_replication

Permission to call logical replication functions, such as kill_snapshot, pg_create_logical_replication_slot, pg_create_physical_replication_slot, pg_drop_replication_slot, pg_replication_slot_advance, pg_create_physical_replication_slot_extern, pg_logical_slot_get_changes, pg_logical_slot_peek_changes, pg_logical_slot_get_binary_changes, and pg_logical_slot_peek_binary_changes.

gs_role_account_lock

Permission to lock and unlock users. However, this role cannot lock or unlock the initial user or users with the PERSISTENCE attribute.

gs_role_pldebugger

Permission to debug functions in dbe_pldebugger.

gs_role_public_dblink_drop

Permission to delete public database links.

gs_role_public_dblink_alter

Permission to modify public database links.

gs_role_seclabel

Permission to create, delete, and apply security labels.

gs_role_public_synonym_create

Permission to create public synonyms.

gs_role_public_synonym_drop

Permission to delete public synonyms.

The restrictions on built-in roles are as follows:
  • The role names starting with gs_role_ are reserved for built-in roles in the database. Do not create users, roles, or schemas starting with gs_role_ or rename existing users, roles, or schemas to names starting with gs_role_.
  • Do not perform ALTER or DROP operations on built-in roles.
  • By default, built-in roles do not have the LOGIN permission and do not have preset passwords.
  • The gsql meta-commands \du and \dg do not display information about built-in roles. However, if pattern is set to a specific built-in role, the information is displayed.
  • When separation of duties is disabled, the initial user, users with the SYSADMIN permission, and users with the ADMIN OPTION built-in role permission have the permission to perform GRANT and REVOKE operations on built-in roles. When separation of duty is enabled, the initial user and users with the ADMIN OPTION built-in role permission have the permission to perform GRANT and REVOKE operations on built-in roles. For example:
    1
    2
    GRANT gs_role_signal_backend TO user1;
    REVOKE gs_role_signal_backend FROM user1;
    

We use cookies to improve our site and your experience. By continuing to browse our site you accept our cookie policy. Find out more

Feedback

Feedback

Feedback

0/500

Selected Content

Submit selected content with the feedback