El contenido no se encuentra disponible en el idioma seleccionado. Estamos trabajando continuamente para agregar más idiomas. Gracias por su apoyo.

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

Notes and Constraints

Updated on 2025-01-09 GMT+08:00

To ensure that your FlexusX instances run properly, read the following notes and constraints before using them.

Quotas

There are quota limits for the number of FlexusX instances, the number of vCPUs, and the RAM memory capacity. FlexusX instances share the quotas with ECSs. You can view the ECS quotas on the Quotas page to obtain the available quotas of FlexusX instances, as shown in Figure 1. If the quotas do not meet your requirements, apply for a higher quota.

Figure 1 FlexusX instance quotas

Regions

  • Once FlexusX instances are purchased, the region or AZ cannot be changed.
  • Resource prices may vary in different regions. For details, see Product Pricing Details.
  • For regional resources (such as images, EVS disks, cloud backups, security groups, and EIPs), FlexusX instances can only use resources in the same region.

Images

  • Images are regional resources. FlexusX instances can only use private images that are in the same region as them.
  • Only private images created using x86 servers are supported in FlexusX.
  • For Windows private images, FlexusX instances only support Windows Server 2022/2019/2016/2012 R2 Standard Edition and Data Center Edition images purchased from Huawei Cloud KooGallery, as well as Windows private images with the Bring Your Own License (BYOL).
  • When you use a private image to create a FlexusX instance or change the OS, ensure that the instance specifications (vCPUs, memory, and system disk capacity) meet the requirements of that private image. Otherwise, the private image cannot be used.

EVS Disks

  • When you purchase a FlexusX instance, the EVS disk device type is VBD by default and cannot be changed. After purchasing a FlexusX instance, you can add SCSI data disks.
  • When you purchase a FlexusX instance, you can add a maximum of 24 disks (1 system disk and 23 data disks). After purchasing a FlexusX instance, you can add a maximum of 60 disks.

    If more data disks are required, attach them after purchasing a FlexusX instance. To query the number of disks that can be attached to FlexusX instances of different specifications, see Querying Information About Disks Attached to an ECS.

  • After a new data disk is attached to a FlexusX instance, you need to initialize the data disk before using it.

For details about EVS constraints, see the EVS Notes and Constraints.

VPCs

When using a VPC, you need to plan VPCs, subnet CIDR blocks, security groups, virtual IP addresses, and elastic NICs. For details about VPC constraints, see Notes and Constraints.

EIPs

  • If a FlexusX instance needs to access the Internet, bind an EIP to the instance.
  • EIPs are regional resources. It cannot be used across regions or accounts. Each EIP can be used by only one FlexusX instance at a time, and they must be in the same region.

For more EIP constraints, see Notes and Constraints.

Other Constraints

  • FlexusX instances do not support nested virtualization.
  • Do not install external hardware devices, such as encryption dongles or USB flash drives on FlexusX instances.

Notes

When using FlexusX instances, comply with the notes below.

  • Do not use FlexusX instances as unauthorized servers for any illegal or violation service, such as gambling or cross-border VPN.
  • Do not use FlexusX instances for fraudulent transactions, such as click farming on e-commerce websites.
  • Do not use FlexusX instances to initiate network attacks, such as DDoS attacks, CC attacks, web attacks, brute force cracking, or spreading of viruses and Trojan horses.
  • Do not use FlexusX instances for traffic transit.
  • Do not use FlexusX instances for web crawling.
  • Do not use FlexusX instances to detect other systems like scanning or penetration unless otherwise being authorized.
  • Do not deploy any illegal websites or applications on FlexusX instances.
  • Do not use FlexusX to send spams or engage in activities that violate personal privacy.
  • Do not stop system processes if you are not sure about the consequences. Otherwise, blue screen of death (BSOD) or a restart may occur on FlexusX instances.
  • Ensure that there is at least 2 GiB of idle memory. Otherwise, BSOD, freezing, or service failures may occur.
  • Do not modify the registry. Otherwise, the system startup may fail. If the modification is mandatory, back up the registry before modifying it.
  • Do not modify the clock settings. Otherwise, DHCP lease may fail, leading to the loss of IP addresses.
  • Do not delete the CloudResetPwdAgent or CloudResetPwdUpdateAgent process. Otherwise, one-click password reset will become unavailable.
  • Do not disable virtual memory. Otherwise, system performance may deteriorate, or system exceptions may occur.
  • Do not delete the VMTools program, or an exception may occur on FlexusX instances.
  • Do not modify the /etc/issue file. Otherwise, the OS distribution will not be identified.
  • Do not delete system directories or files. Otherwise, the system may fail to run or start.
  • Do not change the permissions for or names of system directories. Otherwise, the system may fail to run or start.
  • Do not upgrade the kernel of the Linux unless necessary.

    When you have to upgrade the Linux kernel, follow the instructions provided in How Can I Upgrade the Kernel of a Linux ECS?

  • Do not delete the CloudResetPwdAgent or CloudResetPwdUpdateAgent process. Otherwise, one-click password reset will become unavailable.
  • Do not change the default /etc/resolv.conf of the DNS server. Otherwise, software sources and NTP may be unavailable.
  • Do not modify default intranet configurations, such as the IP address, subnet mask, or gateway address of a FlexusX instance. Otherwise, network exceptions may occur.
  • Manually specified IP addresses for Linux FlexusX instances are generally static IP addresses. To avoid network exceptions caused by conflicts between NetworkManager and internal network services, do not enable NetworkManager when not required, such as when installing Kubernetes.
  • Do not use FlexusX instances as unauthorized servers for any illegal or violation service, such as gambling or cross-border VPN.
  • Do not use FlexusX instances for fraudulent transactions, such as click farming on e-commerce websites.
  • Do not use FlexusX instances to initiate network attacks, such as DDoS attacks, CC attacks, web attacks, brute force cracking, or spreading of viruses and Trojan horses.
  • Do not use FlexusX instances for traffic transit.
  • Do not use FlexusX instances for web crawling.
  • Do not use FlexusX instances to detect other systems like scanning or penetration unless otherwise being authorized.
  • Do not deploy any illegal websites or applications on FlexusX instances.
  • Do not use FlexusX to send spams or engage in activities that violate personal privacy.
  • Do not stop system processes if you are not sure about the consequences. Otherwise, blue screen of death (BSOD) or a restart may occur on FlexusX instances.
  • Ensure that there is at least 2 GiB of idle memory. Otherwise, BSOD, freezing, or service failures may occur.
  • Do not modify the registry. Otherwise, the system startup may fail. If the modification is mandatory, back up the registry before modifying it.
  • Do not modify the clock settings. Otherwise, DHCP lease may fail, leading to the loss of IP addresses.
  • Do not delete the CloudResetPwdAgent or CloudResetPwdUpdateAgent process. Otherwise, one-click password reset will become unavailable.
  • Do not disable virtual memory. Otherwise, system performance may deteriorate, or system exceptions may occur.
  • Do not delete the VMTools program, or an exception may occur on FlexusX instances.
  • Do not modify the /etc/issue file. Otherwise, the OS distribution will not be identified.
  • Do not delete system directories or files. Otherwise, the system may fail to run or start.
  • Do not change the permissions for or names of system directories. Otherwise, the system may fail to run or start.
  • Do not upgrade the kernel of the Linux unless necessary.

    When you have to upgrade the Linux kernel, follow the instructions provided in How Can I Upgrade the Kernel of a Linux ECS?

  • Do not delete the CloudResetPwdAgent or CloudResetPwdUpdateAgent process. Otherwise, one-click password reset will become unavailable.
  • Do not change the default /etc/resolv.conf of the DNS server. Otherwise, software sources and NTP may be unavailable.
  • Do not modify default intranet configurations, such as the IP address, subnet mask, or gateway address of a FlexusX instance. Otherwise, network exceptions may occur.
  • Manually specified IP addresses for Linux FlexusX instances are generally static IP addresses. To avoid network exceptions caused by conflicts between NetworkManager and internal network services, do not enable NetworkManager when not required, such as when installing Kubernetes.

Utilizamos cookies para mejorar nuestro sitio y tu experiencia. Al continuar navegando en nuestro sitio, tú aceptas nuestra política de cookies. Descubre más

Feedback

Feedback

Feedback

0/500

Selected Content

Submit selected content with the feedback