ecs
- FAQs
- Questions Summary
- ECS Overview
- Regions and AZs
- What Is an AZ?
- What Is a Region?
- Are Products Different in Different Regions?
- Is Data Transmission Between AZs Billed?
- Can I Change the Region for a Purchased ECS?
- Can a Load Balancer Distribute Traffic to ECSs in Different Regions?
- Is Application Disaster Recovery Available in Different Regions?
- Does the Public Cloud Provide the Application DR Service?
- Can Components Contained in an Application Be Distributed to Different Regions?
- Billing
- Creation and Deletion
- ECS Creation
- Why Is My ECS Not Displayed on the Management Console?
- What Should I Do If the ECS Resources to Be Purchased Are Sold Out?
- What Is the Creation Time and Startup Time of an ECS?
- Why Does the Failures Area Show an ECS Creation Failure But the ECS List Displays the Created ECS?
- When Does an ECS Become Provisioned?
- 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 Should I Do If I Selected a Wrong Image When Purchasing an ECS?
- Why Cannot I Inject a File Through the Console When Purchasing a Linux ECS?
- How Quickly Can I Obtain an ECS?
- ECS Deletion
- ECS Creation
- Login and Connection
- Login Preparations
- What Are the Login Requirements for ECSs?
- What Are the User Credentials for Remote Logins?
- Can I Retrieve My Remote Login Password?
- Why Cannot I Use the Account Used to Create a GPU-accelerated ECS to Log In to the ECS Through SSH?
- What Should I Do If Starting an ECS Remains in "Waiting for cloudResetPwdAgent" State?
- Logins Through the Management Console
- What Should I Do If Garbled Characters Are Displayed When I Log In to My ECS Using VNC?
- What Should I Do If the Page Does not Respond After I Log In to an ECS Using VNC and Do Not Perform Any Operation for a Long Period of Time?
- What Should I Do If I Cannot View Data After Logging In to an ECS Using VNC?
- Why Does a Blank Screen Appear While the System Displays a Message Indicating Successful Authentication 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?
- Why No Audio File Can Be Properly Played on My Windows ECS Logged In Using VNC?
- How Can I Change the Resolution of a Windows ECS?
- Remote Logins
- What Should I Do If I Cannot Log In to My Windows ECS?
- What Should I Do If I Cannot Log In to My Linux ECS?
- What Should I Do If I Cannot Use MSTSC to Log In to an ECS Running the Windows Server 2012 OS?
- 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 Should I Do If I Cannot Obtain the Password for Logging In to My Windows ECS Authenticated Using a Key Pair?
- What Browser Version Is Required to Remotely Log In to an ECS?
- What Should I Do If I Cannot Access a Windows Server 2012 OS After Uninstalling Some Software?
- How Can I Log In to an ECS After Its System Disk Is Exchanged with That Attached to Another ECS Running the Same OS?
- Why Does the System Display a Message Indicating that the Password for Logging In to a Windows ECS Cannot Be Viewed?
- Remote Login Errors on Windows
- What Should I Do If an Authentication Failure Occurs After I Attempt to Remotely Log In to a Windows ECS?
- What Should I Do If the Local Computer Cannot Connect to My Windows ECS?
- What Should I Do If I Do Not Have the Permission to Remotely Log In to a Windows ECS?
- What Should I Do If the System Displays No Remote Desktop License Servers Available to Provide a License When I Log In to a Windows ECS?
- What Should I Do If the System Displays Error Code 0x112f When I Log In to a Windows ECS?
- Why Does the System Display Error Code 0x1104 When I Log In to a Windows ECS?
- Why Does the System Display Error Code 122.112... When I Log In to a Windows ECS?
- What Should I Do If the System Displays Invalid Certificate or Associated Chain When I Log In to a Windows ECS from a Mac?
- What Should I Do If the System Displays a Message Indicating Invalid Credentials?
- Why Does an Internal Error Occur When I Log In to My Windows ECS?
- How Can I Troubleshoot a Disconnected Session Because of a Protocol Error When I Log In to a Windows ECS?
- How Can I Troubleshoot an Identity Error of the Remote Computer When I Log In to a Windows ECS?
- How Can I Troubleshoot the Connection Error of Two Computers in the Allotted Time When I Log In to a Windows ECS?
- How Can I Troubleshoot a Denied Connection Because of Unauthorized User Account When I Log In to a Windows ECS?
- How Can I Troubleshoot a Lost Connection Because of Another User's Login When I Log In to a Windows ECS?
- What Should I Do If BSOD Occurs When I Log In to a Windows Server 2012 ECS Using Remote Desktop Connection?
- Remote Login Errors on Linux
- What Should I Do If Error Message "Module is unknown" Is Displayed 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?
- What Should I Do If Error Message "Access denied" Is Displayed 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?
- Login Preparations
- ECS Management
- Hostnames
- Modifying Specifications
- How Can I Modify ECS Specifications?
- What Should I Do If My Specifications Modification Request Failed to Submit?
- What Should I Do If Executing a Driver Installation Script Failed on an ECS Running CentOS 5?
- What Should I Do If Executing a Driver Installation Script Failed When I Attempted to Modify the Specifications of a Linux ECS?
- What Should I Do If the Disk of a Windows ECS Becomes Offline After the ECS Specifications Are Modified?
- What Should I Do If the Disk of a Linux ECS Becomes Offline After the ECS Specifications Are Modified?
- Usage Errors
- How Do I Handle Error Messages Displayed on the Management Console?
- How Can I Recover a Windows ECS with an Abnormal Virtualization Driver?
- What Should I Do If I Cannot Activate a Windows ECS?
- What Should I Do If Emails Configured on an ECS Cannot Be Sent?
- Why Is My Windows ECS Muted?
- How Do I Change an ECS SID?
- OS Management
- Changing OSs
- Reinstalling OSs
- GUI Installation FAQs
- OS Faults
- 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?
- What Should I Do If the Forcibly Stopped Linux ECS Fails to Start Due to File System Damage?
- What Should I Do If the Cursor Is Unavailable After a GNOME GUI Is Installed on a Kunpeng ECS Running CentOS 7 or NeoKylin NKASV 7?
- File Transferring
- How Can I Upload a File to an ECS?
- How Can I Transfer Files from a Local Windows Computer to a Windows ECS?
- How Can I Use OBS to Transfer Files from a Local Windows Computer to a Windows ECS?
- How Can I Use WinSCP to Transfer Files from a Local Windows Computer to a Linux ECS?
- How Can I Transfer Files from a Local Mac to a Windows 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 Windows or Linux ECS?
- How Can I Use FTP to Transfer Files Between a Local Linux Computer and a Linux ECS?
- How Can I Transfer Data Between a Local Computer and a Windows 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?
- What Should I Do If an ECS with FTP Deployed Cannot Be Accessed Through Internet?
- What Should I Do If an Error Occurs When I Open a Folder on an FTP Server?
- Application Migration
- Image Source Management
- How Can I Use the Automated Tool to Configure an HUAWEI CLOUD Image Source (x86_64)?
- How Can I Use an OpenSUSE Image Source (x86_64) Provided by HUAWEI CLOUD?
- How Can I Use a CentOS Image Source (x86_64) Provided by HUAWEI CLOUD?
- How Can I Use a CentOS-Altarch Image Source (Arm) Provided by HUAWEI CLOUD?
- How Can I Use an Ubuntu Image Source (x86_64 or Arm) Provided by HUAWEI CLOUD?
- How Can I Use a EulerOS Image Source (x86_64 or Arm) Provided by HUAWEI CLOUD?
- How Can I Use an EPEL Image Source (x86_64 or Arm) Provided by HUAWEI CLOUD?
- How Can I Use a Pypi Image Source (x86_64 or Arm) Provided by HUAWEI CLOUD?
- How Can I Replace a CentOS 6 Image Source?
- What Can I Do If the Download Speed Is Slow After the yum makecache Command Is Executed?
- How Do I Replace an Image Source with an Official HUAWEI CLOUD Image Source?
- Disk Management
- Disk Partitions and Virtual Memory
- What Should I Do If the Data Disk Attached a Windows ECS Is Unavailable?
- How Can I Adjust System Disk Partitions?
- How Can I Obtain the Mapping Between Disk Partitions and Disk Devices on a Windows ECS?
- How Can I Obtain the Mapping Between Disk Partitions and Disk Devices on a Linux ECS?
- How Can I Enable Virtual Memory on a Windows ECS?
- Why Is the Memory of an ECS Obtained by Running the free Command Inconsistent with the Actual Memory?
- Disk Capacity Expansion
- Disk Attachment
- Can Multiple Disks Be Attached to an ECS?
- What Are the Restrictions on Attaching an EVS Disk to an ECS?
- Which ECSs Can Be Attached with SCSI EVS Disks?
- What Is the Mapping Between Device Names and Disks?
- What Should I Do If Attaching a Disk to a Windows ECS Failed But There Are Still Available Device Names?
- What Should I Do If a Linux ECS with a SCSI Disk Attached Fails to Restart?
- How Can I Check Whether the ECSs Attached with the Same Shared SCSI Disk Are in the Same ECS Group?
- Others
- Who Can Use the Encryption Feature?
- How Can I Add an ECS with Local Disks Attached to an ECS Group?
- What Should I Do If a Disk Is Offline?
- What Should I Do If the Drive Letter Changes After the ECS Is Restarted?
- How Can I Obtain Data Disk Information If Tools Are Deleted?
- How Can I Rectify the Fault That May Occur on a Linux ECS with an NVMe SSD Disk Attached?
- Disk Partitions and Virtual Memory
- Passwords and Key Pairs
- Passwords
- 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?
- Changing the Login Password on an ECS
- Resetting the Password for Logging In to a Windows ECS Without Password Reset Plug-ins Installed
- Resetting the Password for Logging In to a Linux ECS Without Password Reset Plug-ins Installed
- 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?
- What Should I Do If I Cannot Log In to My ECS Using the Reset Password?
- What Should I Do If a Service Port Is Used by a One-Click Password Reset Plug-in?
- Key Pairs
- How Can I Obtain the Key Pair Used by an 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 Was My Login to a Linux ECS Using a Key File Unsuccessful?
- What Should I Do If I Cannot Download a Key Pair?
- What Should I Do If a Key Pair Created Using puttygen.exe Cannot Be Imported to the Management Console?
- What Is the cloudbase-init Account in Windows ECSs?
- What Should I Do If Cloud-Init Does Not Work After Python Is Upgraded?
- Passwords
- Network Configurations
- EIP FAQs
- DNS and NTP Configurations
- NICs
- 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 Change the Network Segment of an ECS Subnet?
- How Can I Check Whether the Network Communication Between Two ECSs Equipped with an InfiniBand NIC Driver Is Normal?
- How Can I Manually Configure an IP Address for an InfiniBand NIC?
- What Should I Do If a NIC Fails to Work?
- How Can I Handle the Issue that a Windows 7 ECS Equipped with an Intel 82599 NIC Reports an Error in SR-IOV Scenarios?
- Routing
- Website or Application Access Failures
- Others
- How Can I Obtain the MAC Address of My ECS?
- How Can I Test Network Performance?
- Why Cannot I Use DHCP to Obtain a Private IP Address?
- How Can I View and Modify Kernel Parameters of a Linux ECS?
- How Can I Configure Port Redirection?
- Can the ECSs of Different Accounts Communicate over an Intranet?
- Are ECSs I Purchased Deployed in the Same Subnet?
- Security Configurations
- Resource Management and Tags
- Resource Monitoring
- Database Applications
- Change History
What Are the Precautions for Using ECSs?
Updated at: Jan 26, 2021 GMT+08:00
- Do not upgrade ECS kernel or OS versions. If you want to upgrade the main OS version, for example, from CentOS 7.2 to Cent OS 7.3, use the provided OS changing function.
- Do not uninstall the performance optimization software pre-installed on your ECSs.
- Do not change NIC MAC addresses. Otherwise, the network connection will fail.
Parent topic: Product Utilization
