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
DataArts Fabric
IoT
IoT Device Access
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
Media Services
Media Processing Center
Video On Demand
Live
SparkRTC
MetaStudio
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
Huawei Cloud Astro Canvas
Huawei Cloud Astro Zero
CodeArts Governance
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 (CCI)
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
Cloud Transformation
Well-Architected Framework
Cloud Adoption Framework
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
Blockchain
Blockchain Service
Web3 Node Engine Service
MacroVerse aPaaS
KooMessage
KooPhone
KooDrive

Constraints

Updated on 2025-07-03 GMT+08:00

The following tables list the constraints designed to ensure stability and security of GeminiDB DynamoDB-Compatible instances.

Specifications

Table 1 Specifications

Resource Type

Specifications

Description

CPU and memory

GeminiDB DynamoDB-Compatible API supports cluster instances.

Storage

The storage space range is related to the selected instance specifications.

Storage can be scaled up or down. For details, see Overview.

Quotas

Table 2 Quotas

Resource Type

Constraint

Description

Tag

A maximum of 20 tags can be added for each instance.

For more information, see Tag Management.

Free backup storage

GeminiDB DynamoDB-Compatible instances provide free backup storage.

For more information, see Backup Storage.

Retention period

The default value is 7 days. The value ranges from 1 to 3660 days.

For more information, see Configuring an Automated Backup Policy.

Naming Rules

Table 3 Naming rules

Item

Description

Instance name

  • Can contain 4 to 64 characters.
  • Must start with a letter. Only letters (case-sensitive), digits, hyphens (-), and underscores (_) are allowed.

Backup name

  • Can contain 4 to 64 characters.
  • Must start with a letter. Only letters (case sensitive), digits, hyphens (-), and underscores (_) are allowed.

Parameter template name

  • Can contain 1 to 64 characters.
  • Only letters (case sensitive), digits, hyphens (-), underscores (_), and periods (.) are allowed.

Security

Table 4 Security

Item

Description

Password of database administrator rwuser

  • Can contain 8 to 32 characters.
  • Can contain at least two types of the following characters: uppercase letters, lowercase letters, digits, and special characters ~!@#%^*-_=+? For more information, see Resetting the Administrator Password.
  • Keep your password secure. The system cannot retrieve it if it is lost.

Database port

Database port number.

Port 8000 is used by default and cannot be changed for a GeminiDB DynamoDB-Compatible instance.

VPC

After a GeminiDB DynamoDB-Compatible instance is created, the VPC where the instance is deployed cannot be changed.

Security group

A security group controls access between GeminiDB DynamoDB-Compatible API and other services. Ensure that the security group you selected allows your client to access the instance.

If no security group is available, the system creates one for you.

Instance Operations

Table 5 Instance operations

Function

Constraint

Database access

  • If remote access is not enabled, GeminiDB DynamoDB-Compatible instances and their associated ECSs must be in the same VPC subnet.
  • The security group must allow access from the associated ECS.

    By default, a GeminiDB DynamoDB-Compatible instance cannot be accessed through an ECS in a different security group. You need to add an inbound rule to the security group.

  • The default port of the GeminiDB DynamoDB-Compatible instance is 8000.
  • The database port can be changed only after the instance is created.

Instance deployment

The servers where instances are deployed are not directly visible to you. You can only access the instances through IP addresses and database ports.

Restarting a GeminiDB DynamoDB-Compatible instance

  • GeminiDB DynamoDB-Compatible instances cannot be rebooted through commands. They must be rebooted on the console.
  • Restarting an instance will interrupt services, so off-peak hours are the best time. Ensure that your application can be reconnected.

Viewing backups of a GeminiDB DynamoDB-Compatible instance

GeminiDB DynamoDB-Compatible instance backups are stored in OBS buckets and are invisible to you.

Changing the CPU or memory of a GeminiDB DynamoDB-Compatible instance

  • Second-level intermittent disconnection occurs once when the specifications are changed on a single node. Therefore, the entire instance is intermittently disconnected several times. Ensure that the client can be reconnected. You are advised to change the specifications during off-peak hours.
  • For a node whose specifications are being changed, its computing tasks are handed over to other nodes. Change specifications of nodes during off-peak hours to prevent instance overload.

Data restoration

To prevent data loss, you are advised to back up key data before data restoration.

Storage

If the instance storage is full, data cannot be written to databases. You are advised to periodically check the storage.

The storage can be automatically scaled up in case of a sudden surge in data volumes. Enable autoscaling by following Automatically Scaling Up Storage Space.

Recycle bin

  • You can move unsubscribed yearly/monthly instances and deleted pay-per-use instances to the recycle bin. You can restore an instance that was deleted up to 7 days ago from the recycle bin.
  • The recycle bin is enabled by default and cannot be disabled. Instances in the recycle bin can be retained for 7 days by default. This function is free of charge.
  • Currently, you can put a maximum of 100 instances into the recycle bin.
  • If you delete an instance running out of storage, it will not be moved to the recycle bin.

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