Elastic Cloud Server
Elastic Cloud Server
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All results for "
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What's New
What's New
Function Overview
Service Overview
What Is ECS?
ECS Advantages
ECS Application Scenarios
ECS Types and Specifications
ECS Overview
ECS Lifecycle
ECS Types
CPU Credits
x86 ECS Specifications
A Summary List of x86 ECS Specifications
General Computing ECSs
General Computing-plus ECSs
General Computing-Basic ECSs
Memory-optimized ECSs
Large-Memory ECSs
Disk-intensive ECSs
GPU-accelerated ECSs
FlexusX Instances
AI-accelerated ECSs
Images
Image Types
Cloud-Init
EVS Disks
Network
Security
Identity Authentication and Access Control
Access Control for ECS
Data Protection
Hypervisor Security
User Encryption
HSS
Fault Recovery
License Types
Billing
Notes and Constraints
ECS and Other Services
Permissions
Region and AZ
Billing
Billing Overview
Billing Modes
Overview
Yearly/Monthly Billing
Pay-per-Use Billing
Spot Pricing (for Spot Instances)
Spot Pricing (for Spot Block Instances)
Billing Items
Billing Examples
Billing Mode Changes
Overview
Pay-per-Use to Yearly/Monthly
Yearly/Monthly to Pay-per-Use
Subscription Renewal
Overview
Manually Renewing an ECS
Auto-renewing an ECS
Bills
Arrears
Billing Termination
Cost Management
Billing FAQ
Billing Modes
What Are the Differences Between Yearly/Monthly and Pay-per-Use Billing Modes?
Will I Be Billed After ECSs Are Stopped?
Can I Switch Between Yearly/Monthly and Pay-per-Use Billing Modes?
FAQs About ECS Frozen, Deletion, and Unsubscription
How Can I Stop an ECS from Being Billed?
FAQs About Spot ECSs
Renewal and Unsubscription
How Can I Renew ECSs?
How Can I Automatically Renew a Yearly/Monthly ECS?
How Do I Unsubscribe from ECSs?
Will I Receive a Notification If My Account Balance Is Insufficient?
Getting Started
Purchasing and Using a Linux ECS
User Guide
Using IAM to Grant Access to ECS
Creating a User and Granting ECS Permissions
ECS Custom Policies
Instances
Overview
Selecting an ECS Billing Mode
Yearly/Monthly Billing
Pay-per-Use Billing
Spot Pricing
Spot Pricing ECSs
Reserved Instances
Reserved Instance Overview
Enabling and Purchasing a Reserved Instance
Modifying RI Attributes
Changing Pay-per-Use to Yearly/Monthly
Changing Yearly/Monthly to Pay-per-Use
Purchasing an ECS
Introducing ECS Purchase Options
Purchasing an ECS in Custom Config Mode
Purchasing a Spot ECS
Purchasing a Spot Block ECS
Purchasing an ECS Using a Private Image
Purchasing the Same ECS
Logging In to a Windows ECS
Login Overview (Windows)
Logging In to a Windows ECS Using VNC
Logging In to a Windows ECS Using MSTSC
Logging In to a Windows ECS from a Linux Computer
Logging In to a Windows ECS from a macOS Server
Logging In to a Windows ECS from a Mobile Terminal
Logging In to a Linux ECS
Login Overview (Linux)
Logging In to a Linux ECS Using VNC
Logging In to a Linux ECS Using an SSH Key Pair
Logging In to a Linux ECS Using an SSH Password
Logging In to a Linux ECS from a macOS Server
Logging In to a Linux ECS from a Mobile Terminal
Managing GPU Drivers of GPU-accelerated ECSs
GPU Driver
Obtaining a Tesla Driver and CUDA Toolkit
Manually Installing a GRID Driver on a GPU-accelerated ECS
Manually Installing a Tesla Driver on a GPU-accelerated ECS
Managing ECS Configurations
Changing the Time Zone for an ECS
Enabling or Disabling Hyper-Threading
Obtaining Metadata and Passing User Data
Obtaining Metadata
Injecting User Data
Changing ECS Names
Managing ECS Groups
Automatically Recovering ECSs
Configuring Mapping Between Hostnames and IP Addresses in the Same VPC
Modifying ECS Specifications (vCPUs and Memory)
Modifying Specifications of Individual ECSs
Reinstalling or Changing the OS
Reinstalling the OS
Changing the OS
Viewing ECS Information
Viewing the ECS Creation Status
Viewing Failed Tasks
Viewing ECS Details
Exporting ECS Information
Searching for ECSs
Images
Overview
Creating an Image
Disks
Overview
Adding a Disk to an ECS
Attaching a Disk to an ECS
Initializing Data Disks
Detaching an EVS Disk from a Running ECS
Expanding the Capacity of an EVS Disk
Expanding the Local Disks of a Disk-intensive ECS
Elastic Network Interfaces
Overview
Attaching a Network Interface
Detaching a Network Interface
Changing a VPC
Modifying a Private IP Address
Managing Virtual IP Addresses
Enabling NIC Multi-Queue
Enabling IPv6 for a Network Interface
Dynamically Assigning IPv6 Addresses
EIPs
Overview
Binding an EIP
Unbinding an EIP
Changing an EIP
Modifying an EIP Bandwidth
Enabling Internet Connectivity for an ECS Without an EIP Bound
Security
Methods for Improving ECS Security
Security Groups
Overview
Default Security Groups and Rules
Security Group Configuration Examples
Configuring Security Group Rules
Changing a Security Group
HSS
Project and Enterprise Project
Backup Using CBR
Overview
Backing Up an ECS
Passwords and Key Pairs
Password Reset
Application Scenarios for Using Passwords
Resetting the Password for Logging In to an ECS in the OS
Resetting the Password for Logging In to a Windows ECS Without the Password Reset Plug-in Installed
Resetting the Password for Logging In to a Linux ECS
Key Pairs
Application Scenarios for Using Key Pairs
(Recommended) Creating a Key Pair on the Management Console
Creating a Key Pair Using PuTTY Key Generator
Importing a Key Pair
Obtaining and Deleting the Password of a Windows ECS
Obtaining the Password for Logging In to a Windows ECS
Deleting the Initial Password for Logging In to a Windows ECS
Resources and Tags
Tag Management
Overview
Adding Tags
Searching for Resources by Tag
Deleting a Tag
Quota Adjustment
Monitoring Using Cloud Eye
Monitoring ECSs
Basic ECS Metrics
OS Monitoring Metrics Supported by ECSs with the Agent Installed
Process Monitoring Metrics Supported by ECSs with the Agent Installed
OS Monitoring Metrics Supported by ECSs with the Agent Installed and Using Simplified Monitoring Metrics
Setting Alarm Rules
Viewing ECS Metrics
Audit Using CTS
Key Operations Supported by CTS
Viewing Traces
QingTian Enclave Management
QingTian Enclave Overview
What Is QingTian Enclave?
QingTian Enclave Concepts
Getting Started with QingTian Enclave
Examples of Using QingTian Enclave
Workflow
Building a QingTian Enclave Image
Launching a QingTian Enclave Instance
Cryptographic Attestation
PCR
Attestation Document
Document Signature Verification
Integration with Huawei Cloud KMS
QingTian Enclave Application Development
QingTian Enclave Application Development on Linux
QingTian Enclave Network Proxy
QingTian Enclave Log Forwarding Tool
QingTian CLI (qt CLI)
Installation of the qt CLI
Introduction to qt-enclave-env
Introduction to qt enclave Subcommands
QingTian Error Code
FAQs About QingTian
General Questions
Development and Deployment Questions
Best Practices
Best Practices Summary
Setting Up Websites on ECSs
Configuring an ECS
Setting Up an Environment
Setting Up an LNMP Environment
Manually Deploying LNMP (CentOS 7.2)
Manually Deploying LNMP (CentOS 8.0)
Manually Deploying LNMP (Ubuntu 20.04)
Setting Up an LAMP Environment
Manually Deploying LAMP (CentOS 7.8 PHP 7.0)
Setting Up a Java Web Environment
Setting Up Tomcat-based Java Web Environment (CentOS 7.4)
Manually Deploying Node.js (CentOS 7.2)
Setting Up a Website
Setting Up a WordPress Website
Setting Up a WordPress Website (Linux)
Setting Up a Discuz Forum
Overview
Requesting Cloud Resources
Building the Website
Configuring Features
Visiting the Website
Setting Up a Magento E-Commerce Website
Manually Setting Up a Magento E-Commerce Website (Linux)
Manually Deploying a Ghost Blog (Ubuntu 20.04)
Setting Up an Application
Setting Up an FTP Site
Setting Up an FTP Site (Windows 2012)
Setting Up an FTP Site (Windows 2019)
Setting Up an FTP Site (Linux)
Building Microsoft SharePoint Server 2016
Purchasing and Logging In to an ECS
Adding AD, DHCP, DNS, and IIS Services
Installing SQL Server
Installing Microsoft SharePoint Server 2016
Configuring Microsoft SharePoint Server 2016
Verifying Microsoft SharePoint Server 2016
Deploying Docker
Manually Deploying Docker (CentOS 7.5)
Deploying an ECS for Handling Text Messages from an Official WeChat Account
Manually Deploying GitLab (CentOS 7.2)
Manually Deploying RabbitMQ (CentOS 7.4)
Setting Up Master-Slave Replication on PostgreSQL
Manually Installing a BT Panel (CentOS 7.2)
Installing and Deploying Jenkins on an ECS
Using auditd to Record File Changes (Linux)
Restoring Accidentally Deleted Data Using Extundelete (Linux)
Setting Up a ThinkPHP Framework
Securing an ECS
Enhancing Security for SSH Logins to Linux ECSs
Migrating an ECS
Migrating Servers to the Cloud
Accessing OBS from an ECS over the Intranet
Overview
Accessing OBS over Intranet by Using OBS Browser+ on a Windows ECS
Accessing OBS over Intranet by Using obsutil on a Linux ECS
Using VNC Viewer to Access a Linux ECS
API Reference
Before You Start
Overview
API Calling
Endpoints
Constraints
Concepts
Selecting an API Type or Version
Querying Data in Pages
API Overview
Calling APIs
Making an API Request
Authentication
Response
APIs (Recommended)
Lifecycle Management
Creating ECSs
Creating an ECS (Pay-per-Use)
Deleting ECSs
Querying Details About an ECS
Querying Details About ECSs
Modifying an ECS
Status Management
Reinstalling an ECS OS (Using an Image with Cloud-Init Installed)
Changing an ECS OS (Using an Image with Cloud-Init Installed)
Reinstalling an ECS OS (Using an Image Without Cloud-Init Installed)
Changing an ECS OS (Using an Image Without Cloud-Init Installed)
Cold Migrating an ECS
Obtaining the VNC Login Address
Modifying the Specifications of an ECS
Modifying the Specifications of an ECS (Pay-per-Use)
Batch Operations
Starting ECSs in a Batch
Restarting ECSs in a Batch
Stopping ECSs in a Batch
Modifying ECSs in a Batch
Attaching a Specified Shared EVS Disk to Multiple ECSs
Flavor Management
Querying Details About Flavors and Extended Flavor Information
Querying the Target ECS Flavors to Which a Flavor Can Be Changed
NIC Management
Adding NICs to an ECS in a Batch
Deleting NICs from an ECS in a Batch
Querying NICs of an ECS
Disk Management
Querying a Single Disk Attached to an ECS
Querying Disk Attachments of an ECS
Querying Information About Disks Attached to an ECS
Attaching a Disk to an ECS
Detaching an EVS Disk from an ECS
Modifying a Single Disk Attached to an ECS.
Metadata Management
Updating ECS Metadata
Deleting Specified ECS Metadata
Tenant Quota Management
Querying Tenant Quotas
Task Status Management
Querying Task Execution Status
Tag Management
Tag Types
Adding Tags to an ECS in a Batch
Deleting Tags from an ECS in a Batch
Querying Project Tags
Querying Tags of an ECS
ECS Group Management
Creating an ECS Group
Deleting an ECS Group
Adding an ECS to an ECS Group
Removing an ECS from an ECS Group
Querying ECS Groups
Querying Details About an ECS Group
OpenStack Nova APIs
API Version Query
Querying All API Versions
Querying a Specified API Version
Lifecycle Management
Creating an ECS
Modifying ECS Information
Deleting an ECS
Querying ECSs
Querying Details About ECSs
Querying Details About an ECS
Status Management
Starting an ECS
Restarting an ECS
Stopping an ECS
Locking an ECS
Unlocking an ECS
Creating an Image Using an ECS
Modifying the Specifications of an ECS
Confirming ECS Specifications Modification
Rolling Back ECS Specifications Modification
Adding an ECS to the Monitoring List
Network Management
Querying Networks
Querying the Networks of a Specified ECS
Querying the Specified Network of an ECS
Security Group Management
Adding a Security Group
Deleting a Security Group
Querying Security Groups for a Specified ECS
Flavor Management
Querying ECS Flavors
Querying Details About ECS Flavors
Querying Details About an ECS Flavor
Querying the extra_specs Value for an ECS Flavor
NIC Management
Querying ECS NICs
Querying NICs of an ECS
Adding a NIC to an ECS
Deleting a NIC from an ECS
Disk Management
Querying Disks Attached to an ECS
Querying a Disk Attached to an ECS
Attaching a Disk to an ECS
Detaching a Disk from an ECS
Metadata Management
Updating ECS Metadata
Configuring ECS Metadata
Deleting Specified ECS Metadata
Querying ECS Metadata
Obtaining ECS Metadata with a Specified Key
Modifying ECS Metadata with a Specified Key
Tenant Quota Management
Querying Tenant Quota Limits
Querying Tenant Quotas
Querying Default Quotas
Key and Password Management
Querying SSH Key Pairs
Querying a Specified SSH Key Pair
Creating and Importing an SSH Key Pair
Deleting an SSH Key Pair
ECS Group Management
Creating an ECS Group
Querying ECS Groups
Querying Details About an ECS Group
Deleting an ECS Group
ECS Operation Management
Querying Operations on an ECS
Querying ECS Operations by Request ID
ECS Console Management
Obtaining ECS Management Console Logs
Obtaining a VNC-based Remote Login Address (Microversion 2.6 or Later)
AZ
Querying AZs
Tag Management
Querying Tags of an ECS
Adding Tags to an ECS
Deleting Tags from an ECS
Adding a Tag to an ECS
Querying a Specified Tag for an ECS
Deleting a Specified Tag from an ECS
Historical Versions
Application Examples
Obtaining a Token and Checking the Validity Period of the Token
Common Scenarios of Using APIs
Creating an ECS
Querying ECSs
Modifying ECS Specifications
Attaching a Disk to an ECS
Attaching a NIC to an ECS
Querying the EIP Associated with an ECS
Data Structure
Data Structure for Creating ECSs
Data Structure for Querying Details About ECSs
Data Structure for Query Details About Specifications
Permissions and Supported Actions
Introduction
Lifecycle Management
ECS Status Management
Batch Operations
Network Management
Image Management
Security Group Management
Specifications Query
NIC Management
Disk Management
Metadata Management
Tenant Quota Management
SSH Key Management
Floating IP Address Management
ECS Group Management
ECS Management Through Console
AZ Management
Tag Management
Common Parameters
Returned Values for General Requests
Obtaining a Project ID
Task Request Result
Responses (Task)
Returned Values
Batch Task Request
Responses (Batch Operation)
Out-of-Date APIs
Status Management
Querying Automatic Recovery of an ECS (Discarded)
Managing Automatic Recovery of an ECS (Discarded)
Flavor Management
Querying the Target Flavors to Which an ECS Flavor Can Be Changed (Discarded)
NIC Management
Binding a Virtual IP Address to an ECS NIC (Discarded)
Unbinding a Virtual IP Address from an ECS NIC (Discarded)
Disk Management
Querying Disk Attachment of an ECS (Discarded)
Querying a Single Disk Attached to an ECS (Discarded)
Tag Management
Adding Tags to an ECS in a Batch (Discarded)
Deleting Tags from an ECS in a Batch (Discarded)
Querying Project Tags (Discarded)
Querying Tags of an ECS (Discarded)
Querying ECSs by Tag (Discarded)
Image Management (OpenStack Nova APIs)
Querying Images (Discarded)
Querying Image Details (Discarded)
Querying Details About a Specified Image (Discarded)
Querying the Metadata of a Specified Image (Discarded)
Deleting an Image (Discarded)
Security Group Management (OpenStack Nova APIs)
Querying Security Groups (Discarded)
Creating a Security Group (Discarded)
Querying Details About a Security Group (Discarded)
Updating a Security Group (Discarded)
Deleting a Security Group (Discarded)
Creating a Security Group Rule (Discarded)
Deleting a Security Group Rule (Discarded)
Disk Management (OpenStack Nova APIs)
Querying Brief Information About Disks (Discarded)
Querying Detailed Information About Disks (Discarded)
Querying Information About a Disk (Discarded)
Creating a Disk (Discarded)
Deleting a Disk (Discarded)
Floating IP Address Management (OpenStack Nova APIs)
Binding a Floating IP Address (Discarded)
Unbinding a Floating IP Address (Discarded)
Assigning a Floating IP Address (Discarded)
Querying Floating IP Addresses (Discarded)
Querying Details About a Floating IP Address (Discarded)
Releasing a Floating IP Address (Discarded)
Querying Floating IP Address Pools (Discarded)
Snapshot Management (OpenStack Nova APIs)
Creating a Snapshot (Discarded)
Querying Snapshots (Discarded)
Deleting a Snapshot (Discarded)
Appendix
HTTP Status Codes
Error Codes
ECS Statuses
Network APIs
Idempotent Requests
Change History
SDK Reference
SDK Overview
FAQs
Common FAQ
Product Consulting
What Are the Precautions for Using ECSs?
What Can I Do with ECSs?
ECS Creation
What Should I Do If the ECS Resources to Be Purchased Are Sold Out?
How Can I Set Sequential ECS Names When Creating Multiple ECSs?
What Is the Creation Time and Launch Time of an ECS?
Why Does the Failures Area Show an ECS Creation Failure But the ECS List Displays the Created ECS?
Why Cannot I View the ECSs Being Created Immediately After I Pay for Them?
Why Does It Take Longer to Create ECSs When I Use a Full-ECS Image?
What Do I Do If I Selected an Incorrect Image for My ECS?
How Quickly Can I Obtain an ECS?
How Can I Manage ECSs by Group?
ECS Deletion and Unsubscription
What Happens After I Click the Delete Button?
Can a Deleted ECS Be Provisioned Again?
Can a Deleted ECS Be Restored?
How Do I Delete or Restart an ECS?
Can I Forcibly Restart or Stop an ECS?
How Do I Unsubscribe from ECSs?
Remote Login
Login Preparations
What Are the Login Requirements for ECSs?
What Are the Username and Password for Remote Logins?
Why Cannot I Use the Username and Password Configured During the Creation of a GPU-accelerated ECS to Log In to the ECS Through SSH?
Remote Logins
Why Can't I Log In to My Linux ECS?
How Can I Change a Remote Login Port?
Why Cannot I Use a Non-Default SSH Port to Log In to My Linux ECS?
What Browser Version Is Required to Remotely Log In to an ECS?
How Can I Log In to an ECS After It Exchanged the System Disk with Another ECS Running the Same OS?
VNC Login
Why Are Garbled Characters Displayed When I Log In to My ECS Using VNC?
What Should I Do If I Cannot View Data After Logging In to an ECS Using VNC?
Why Does a Blank Screen Appear After I Attempted to Log In to an ECS Using VNC?
What Should I Do If Error Code 1006 or 1000 Is Displayed When I Log In to an ECS Through the Management Console?
Remote Login Errors on Linux
Why Am I Seeing the Error Message "Module is unknown" When I Remotely Log In to a Linux ECS?
What Should I Do If Error Message "Permission denied" Is Displayed When I Remotely Log In to a Linux ECS?
What Should I Do If Error Message "read: Connection reset by peer" Is Displayed When I Remotely Log In to a Linux ECS?
Why Am I Seeing the Error Message "Access denied" When I Remotely Log In to a Linux ECS?
What Should I Do If Error Message "Disconnected: No supported authentication methods available" Is Displayed When I Remotely Log In to a Linux ECS?
Billing
What Are the Differences Between Yearly/Monthly and Pay-per-Use Billing Modes?
Will I Be Billed After ECSs Are Stopped?
Can I Switch Between Yearly/Monthly and Pay-per-Use Billing Modes?
FAQs About ECS Frozen, Deletion, and Unsubscription
How Can I Stop an ECS from Being Billed?
FAQs About Spot ECSs
How Can I Renew ECSs?
How Can I Automatically Renew a Yearly/Monthly ECS?
Will I Receive a Notification If My Account Balance Is Insufficient?
Region and AZ
What Is AZ and How Can I Select and View an AZ?
What Is a Region?
Are Products Different in Different Regions?
Is Data Transmission Between AZs Billed?
Can I Change the Region or AZ After an ECS Is Purchased?
Can I Migrate an ECS to Another Region, AZ, or Account?
Can a Load Balancer Distribute Traffic to ECSs in Different Regions?
Can Components Contained in an Application Be Distributed to Different Regions?
OS
Do ECSs Support GUI?
How Can I Install a GUI on an ECS Running CentOS 6?
How Can I Install a GUI on an ECS Running CentOS 7?
How Can I Install a GUI on an ECS Running Ubuntu?
How Can I Install a GUI on an ECS Running Debian?
Why Does the OS Fail to Respond When kdump Occurs on a Linux ECS?
How Can I Upgrade the Kernel of a Linux ECS?
Why Cannot My ECS OS Start Properly?
How Can I Fix the Meltdown and Spectre Security Vulnerabilities on Intel Processor Chips?
How Can I Enable SELinux on an ECS Running CentOS?
Disk Partition, Attachment, and Expansion
How Can I Adjust System Disk Partitions?
How Do I Obtain My Disk Device Name in the ECS OS Using the Device Identifier Provided on the Console?
How Can I Obtain the Mapping Between Disk Partitions and Disk Devices on a Linux ECS?
How Can I Add the Empty Partition of an Expanded System Disk to the End Root Partition Online?
How Can I Add the Empty Partition of an Expanded System Disk to the Non-end Root Partition Online?
Can I Attach Multiple Disks to an ECS?
What Are the Requirements for Attaching an EVS Disk to an ECS?
Which ECSs Can Be Attached with SCSI EVS Disks?
Why Does a Linux ECS with a SCSI Disk Attached Fails to Be Restarted?
How Can I Check Whether the ECSs Attached with the Same Shared SCSI Disk Are in the Same ECS Group?
Can All Users Use the Encryption Feature?
How Can I Add ECSs Using Local Disks to an ECS Group?
Will My EVS Disk Be Deleted When I Delete Its Server?
Why Does the Disk Drive Letter Change After the ECS Is Restarted?
How Can I Obtain Data Disk Information If Tools Are Uninstalled?
How Can I Rectify the Fault That May Occur on a Linux ECS with an NVMe SSD Disk Attached?
Why Are Disk Error Logs Printed After a Disk Attached to an ECS Is Formatted with the ext4 File System?
Data Backup and Restoration
Can ECSs Automatically Recover After the Physical Host Accommodating the ECSs Becomes Faulty?
Network Configuration
How Can I Configure the NTP and DNS Servers for an ECS?
Does Huawei Cloud Provide the NTP Server and How Can I Configure It?
How Do I Configure DNS for an ECS?
Can the ECSs of Different Accounts in Different VPCs Communicate over an Intranet?
Will My ECSs Be Deployed in the Same Subnet?
How Do I Change the CIDR Block of an ECS Subnet?
How Do I Configure Port Mapping?
How Can I Obtain the MAC Address of My ECS?
How Can I View and Modify Kernel Parameters of a Linux ECS?
Why Is the NIC Not Working?
Why Can't I Use DHCP to Obtain a Private IP Address?
How Can I Test the Network Performance of Linux ECSs?
What Should I Do If NIC Flapping Occurs After My ECS Specifications Are Modified?
Will NICs Added to an ECS Start Automatically?
How Can I Check Whether the Network Communication Is Normal Between Two ECSs Equipped with an InfiniBand NIC Driver?
How Can I Manually Configure an IP Address for an InfiniBand NIC?
How Can I Add a Static Route to a CentOS 6.5 OS?
EIP
Can Multiple EIPs Be Bound to an ECS?
Can an ECS Without an EIP Bound Access the Internet?
What Should I Do If an EIP Cannot Be Pinged?
Why Can I Remotely Access an ECS But Cannot Ping It?
Why Is Outbound Access on TCP Port 25 Blocked?
Why My EIPs Are Frozen? How Do I Unfreeze My EIPs?
Password and Key Pair
How Can I Change the Password for Logging In to a Linux ECS?
What Is the Default Password for Logging In to a Linux ECS?
How Can I Set the Validity Period of the Image Password?
Resetting the Password for Logging In to an ECS in the OS
What Should I Do If the System Displays a Message Indicating that the Password Is Incorrect When I Remotely Log In to My ECS?
What Should I Do If I Cannot Log In to My ECS Using the Initial Password After I Use It for a Period of Time?
Disabling SELinux
How Can I Obtain the Key Pair Used by My ECS?
How Can I Use a Key Pair?
Can I Download a Key Pair from My Phone?
What Should I Do If a Key Pair Cannot Be Imported?
Why Does the Login to My Linux ECS Using a Key File Fail?
What Should I Do If I Cannot Download a Key Pair?
Why Does a Key Pair Created Using puttygen.exe Fail to Be Imported on the Management Console?
What Should I Do If Cloud-Init Does Not Work After Python Is Upgraded?
Application Deployment and Software Installation
Can a Database Be Deployed on an ECS?
Does an ECS Support Oracle Databases?
File Upload/Data Transfer
How Do I Upload Files to My ECS?
How Can I Use WinSCP to Transfer Files from a Local Windows Computer to a Linux ECS?
How Can I Use SCP to Transfer Files Between a Local Linux Computer and a Linux ECS?
How Can I Use SFTP to Transfer Files Between a Local Linux Computer and a Linux ECS?
How Can I Use FTP to Transfer Files from a Local Windows Computer to a Linux ECS?
How Can I Use FTP to Transfer Files Between a Local Linux Computer and a Linux ECS?
What Should I Do If the Connection Between the Client and the Server Times Out When I Upload a File Using FTP?
What Should I Do If Writing Data Failed When I Upload a File Using FTP?
Why Am I Seeing an FTP Folder Error When I Open a Folder on an FTP Server?
Why Do I Fail to Connect to a Linux ECS Using WinSCP?
ECS Failure
How Do I Handle Error Messages Displayed on the Management Console?
What Should I Do If Emails Configured on an ECS Cannot Be Sent?
Why Is the Memory of an ECS Obtained by Running the free Command Inconsistent with the Actual Memory?
Why Is the Hostname of My ECS Restored to the Original Name After the ECS Is Restarted?
Is an ECS Hostname with Suffix .novalocal Normal?
Why Does a Forcibly-Stopped Linux ECS Fail to Be Restarted?
How Can a Changed Static Hostname Take Effect Permanently?
Why Can't My Linux ECS Obtain Metadata?
Slow ECS Response
Why Is My Windows ECS Running Slowly?
Why Is My Linux ECS Running Slowly?
Specification Modification
What Should I Do If My Specifications Modification Request Failed to Submit?
Why Does the Disk Attachment of a Linux ECS Fail After I Modify the ECS Specifications?
OS Change
Does OS Change Incur Fees?
Can I Install or Upgrade the OS of an ECS?
Can I Change the OS of an ECS?
How Long Does It Take to Change an ECS OS?
Will I Lose My Disk Data If I Reinstall ECS OS, Change the OS, or Change the ECS Specifications?
Does OS Reinstallation Incur Fees?
Can I Select Another OS During ECS OS Reinstallation?
How Long Does It Take to Reinstall an ECS OS?
ECS Security Check
How Does an ECS Defend Against DDoS Attacks?
Are ECSs with Simple Passwords Easily Attacked?
How Is ECS Security Ensured?
How Can I Disable Operation Protection?
Resource Management and Tag
How Can I Create and Delete Tags and Search for ECSs by Tag?
Image Source Management
How Can I Use an Automated Tool to Configure a Huawei Cloud Image Source (x86_64 and Kunpeng)?
How Can I Use a Pypi Image Source (x86_64 or Kunpeng) Provided by Huawei Cloud?
What Can I Do If the Download Speed Is Slow After the yum makecache Command Is Executed?
Internet Access Failures
Why Does My Linux ECS Fail to Access the Internet?
Website or Application Inaccessible
Why Did I See "Invalid argument" or "neighbour table overflow" During an Access to a Linux ECS?
Slow Website or Application Response
Why Accessing a Website Outside the Chinese Mainland Is Slow on an ECS?
Troubleshooting
General Issues
Why Accessing a Website Outside the Chinese Mainland Is Slow on an ECS?
How Do I Troubleshoot a Ping Failure or Packet Loss Using a Link Test?
How Do I Troubleshoot Slow Connections to a Website Hosted on My ECS?
How Do I Troubleshoot an Unresponsive Website Hosted on My ECS?
Why Am I Unable to Connect to a Port on an ECS?
How Can I Resolve High Bandwidth Usage on My ECSs?
Why Is My Windows ECS Running Slowly?
Why Is My Linux ECS Running Slowly?
How Can I Handle Slow ECS Startup?
How Do I Configure Multiple IP Addresses for an ECS with Multiple NICs Attached?
Windows ECS Issues
How Can I Retain a Session on a Windows ECS?
How Can I Fix the Difference Between the System Time and the Local Standard Time?
How Do I Attach an Extension NIC to a Windows ECS for Accessing the Internet?
How Can I Fix Grayed Out Copy and Paste Options?
How Do I Configure File Sharing and Network Disk Mapping for a Windows ECS?
How Do I Troubleshoot an In-Service Port During Tomcat Startup?
How Do I Troubleshoot Unavailable Input Methods?
How Do I Share Files Between Windows ECSs?
How Do I Restore Data in the Event of a Startup Failure on a Windows ECS?
How Do I View Login Logs of a Windows ECS?
Linux ECS Issues
Why Is My Linux ECS Not Booting and Going Into Emergency Mode?
How Do I Fix a "Read-Only" Error When I Edit the /etc/fstab File?
How Do I Change the Time Zone on ECSs Running CentOS or EulerOS?
How Do I Troubleshoot "nf_conntrack:table full, dropping packet"?
How Do I Change the Default Boot Kernel in Ubuntu?
How Do I Configure atop and kdump on Linux ECSs for Performance Analysis?
Why Is the OS Version of My ECS Not the One in the Image I Selected During ECS Creation?
How Do I Enable My ECS to Boot From the Second Kernel If It Fails to Boot from the First Kernel?
How Can I Make /etc/rc.local Run at Startup in CentOS 7?
What OSs Are Supported If I Want to Install Docker on a Linux ECS?
Why Do the Modifications to /etc/security/limits.conf Not Take Effect After the ECS Restarts?
How Do I Set vCPU Affinity for Processes Using taskset?
What Should I Do If Error "command ´gcc´ failed with exit status 1" Occurs During PIP-based Software Installation
What Can I Do If Switching from a Non-root User to User root Times Out?
What Can I Do If the Permissions on the Root Directory of My CentOS ECS Changed to 777?
What Should I Do If the IP Settings of My Linux ECS Are Lost?
Why Does My Linux ECS Restart Unexpectedly?
What Do I Do If Error "Cannot allocate memory" Is Displayed?
Configuring the Network
Why Does My ECS Running CentOS 7 Fail to Obtain an IP Address Using dhclient?
Why Does the NIC Names Change After I Start a Linux ECS?
Why an Entry Is Automatically Added to /etc/hosts After a Linux ECS Is Restarted?
How Do I Fix a Network Startup Failure Due to Multiple NIC Configuration Files?
Why Do I Get the Error "Name or service not known" When I Ping a Public Domain Name Configured for a Linux ECS?
Why Cannot the EIP Bound to the Extension NIC of My ECS Access the Internet?
How Do I Fix Too High Memory Usage by NetworkManager When Multiple Docker Containers Are Running?
Why Is the ECS IP Address Lost After the System Time Changes?
What Can I Do If resolv.conf Gets Reset?
Disk Space Management Issues
Why Can't I Mount a Disk on an Old Mount Point by Modifying fstab in CentOS 7?
How Do I Create a Swap Partition or File in Linux?
Why Is the Space Not Released After I Delete a Large File on a Linux ECS?
What Should I Do If the "Read-only file system" Error Message Is Displayed When I Attempt to Delete a File on a Linux ECS?
How Do I Fix File Creation Failures Due to Inode Exhaustion?
Why Do I Get the Error "No space left on device" When I Create a File on a Linux ECS?
Why the Buffer and Cache Occupy Too Much Memory of a Linux ECS?
GPU Driver Issues
Why Is the GPU Driver Abnormal?
Why Is the GPU Driver Unavailable?
Why Is the T4 GPU Display Abnormal?
How Do I Troubleshoot GPU Start Failures Caused by NULL Pointer Dereference on NVIDIA?
SSH Connection Issues
How Do I Keep an SSH Session Alive?
How Can I Allow or Deny Login from Specific Users or IP Addresses to an ECS Using SSH?
Why Can't I Access an ECS Running CentOS 7 Using SSH After I Changed the Default SSH Port?
How Can I Resolve ECS Login Failures Due to Corrupt /etc/passwd?
Why Does It Takes a Long Time to Connect to an ECS Using SSH After UseDNS Is Enabled?
Why Does sshd Fail to Be Started on a Linux ECS?
How Do I Disable Login to an ECS Using SSH Password?
Why Are Connections to a Linux ECS Using SSH or to Applications on the ECS Interrupted Occasionally?
Multi-User Login Issues
How Do I Configure Multi-User Logins for an ECS Running Windows Server 2012?
Why Does a Browser Launch Error Occur in Multi-User Login?
How Do I Apply for a License for Authenticating Multi-User Sessions and Activate an ECS?
How Do I Troubleshoot Login Screen Flickering After Configuring Multi-User Login?
Passwords and Key Pairs Issues
How Do I Reset the Password for User root in Single-User Mode on a Linux ECS?
How Do I Reset the Password for Logging In to a Linux ECS?
How Do I Fix the "Authentication token manipulation error" When I Reset the Password Using passwd on a Linux ECS?
How Do I Change the Key Pair for a Linux ECS?
How Do I Change the Login Mode of a Linux ECS from Key Pair to Password?
Firewall Configuration Issues
How Do I Disable a Windows ECS Firewall and Add a Port Exception on a Windows ECS Firewall?
How Do I Disable a Linux ECS Firewall and Add a Port Exception on a Linux ECS Firewall?
BSOD Issues
How Do I Fix a BSOD on a Windows ECS?
How Do I Troubleshoot Blue Screen or Black Screen Errors After an ECS Is Started?
Why Does BSOD Occur When I Log In to an ECS Using Remote Desktop Connection?
IIS Installation Issues
How Do I Install IIS on a Windows ECS?
Why Does an Error Occur When I Attempt to Change a Domain Name on IIS Manager?
How Do I Redirect Web Pages?
Change History
Videos