- Product Introduction
- Tutorial
- Release Notes and Announcements
- Public Image Updates
- Announcements
- CentOS 8 End of Maintenance
- Discontinuation of Support for SUSE Commercial Images
- Price Reduction in Selected Availability Zones
- WebShell Proxy IP Addresses Updates
- Windows Server 2003 System Images End of Support Announcement
- Pay-as-you-go Price Adjustments for Standard S3 CVMs in the Silicon Valley Region
- Vulnerability repairing for Linux images
- Windows Server 2008 R2 Enterprise Edition SP1 64-bit Images End of Support Announcement
- Upgrading Virtio network card drive for Windows CVMs
- Solution to Tomcat Start Failure on Ubuntu14.04
- Stopping supporting for Ubuntu 10.04 images
- About Configuration of Security Group Port 53
- Purchase Guide
- Getting Started
- Operation Guide
- Operation Guide Overview
- Use Limits Overview
- Convenience Features
- Instances
- Creating Instances
- Working with Instance Launch Templates
- Batch Sequential Naming or Pattern String-Based Naming
- Generating API Explorer Reusable Scripts to Create Instances
- Adjusting Configuration
- Querying Information
- Renaming Instances
- Resetting Instance Password
- Managing Instance IPs
- Changing Instance Subnet
- Changing Security Group
- Searching for Instances
- Exporting Instance List
- Renewing Instances
- Querying the Repossession Status of a Spot Instance
- Shutting Down Instances
- Restarting Instances
- Logging in to Linux Instance
- Logging in to Windows instance
- Reinstalling System
- Using Tencent Cloud Automation Tools
- Terminating/Returning Instances
- Instance Repossession
- Spot Instances
- No Charges When Shut Down for Pay-as-You-Go Instances
- Managing Roles
- Starting Up Instances
- Managing Roles
- Images
- Service Migration
- Cloud Disks
- Networking
- Maintenance Tasks
- Security
- Security Groups
- Protection of Sensitive Operations
- Managing Login Password
- Managing SSH Keys
- Spread Placement Group
- Unblocking Port 25
- Tags
- Monitoring and Alarms
- Sample Console Configuration
- Best Practice
- Best Practices
- Choosing the CVM Model
- Migrating CVM Instances
- Setting up a Website
- Building an Environment
- Building a Website
- Building an Application
- Data Backup
- Uploading Local Files to CVM
- Copying Local Files to CVMs
- Uploading Files from MacOS to Windows CVM Using MRD
- Uploading Files from Linux to Windows CVM using RDP
- Uploading Files from Linux to a CVM Using FTP
- Uploading files via WinSCP to a Linux CVM from Windows
- Uploading Files from Windows to a CVM Using FTP
- Uploading Files from Linux or MacOS to Linux CVM via SCP
- Uploading Files from Windows to a Windows CVM via MSTSC
- Other CVM Operations
- Network Performance Test
- High-throughput Network Performance Test
- Building a Visual GUI
- Recovering Data on Linux CVMs
- CVM Access to COS via a Private Network
- Changing Kernel of a Linux Instance Manually
- Managing Disk Space on Windows CVMs
- Setting Up Windows-based AD Domain on a CVM
- Using RemoteFx to Redirect USB Devices in Windows
- Using USB/IP to Share USB Devices in Linux
- Using AVX-512 Instructions to Accelerate AI Applications on CVM
- Building Tencent SGX Confidential Computing Environment
- Configuring Persistent Memory in M6p Instances
- Operations Guide
- Initializing Data Disks
- Environment Configurations
- Installing Software
- User Data
- Work with Operating Systems
- System Activation
- System Updates
- System Shutdown
- Configuring High-performance Power Management
- Windows Recovery Mode
- Use of the atop Monitoring Tools by Linux Instances
- Ensuring Unique SIDs for CVMs Using Sysprep
- Modifying VNC Resolution
- Introduction to Linux Kernel Parameters
- Updating the Virtio ENI Driver
- Modifying SID
- Others
- Troubleshooting
- Instance-Related Failures
- CVM Login Failures
- Windows Instance Login Failures
- Windows Instance Login Failures
- An authentication error occurred when you tried to log in to a Windows instance remotely
- Failed to Reset the CVM Password or the CVM Password Is Invalid
- Windows instance: no remote Desktop license server can provide license
- Requires network-level identity verification
- Problems occurred when you tried to log in to a Windows CVM remotely on Mac
- Failed to log in to a Windows CVM due to high CPU and memory usage
- Failed to connect to a remote computer through Remote Desktop
- Credentials Not Work
- Connection to a Windows CVM through Remote Desktop was denied
- Remote Login Failure Due To Port Issues
- Linux Instance Login Failures
- Linux Instance Login Failures
- Unable to Log in to a Linux Instance via SSH Key
- Failing to log in to a Linux CVM due to high CPU and memory usage
- Remote Login Failure due to Port Issues
- VNC Login Error (Module is Unknown)
- VNC Login Error (Account Locked due to XXX Failed Logins)
- VNC Login Error (Login Failed with Correct Password)
- VNC or SSH Login Error (Permission Denied)
- Login Failure Due to /etc/fstab Configuration Errors
- sshd Configuration File Permissions
- Infinite Loop Call in /etc/profile
- Login Failure Due to Server Isolation
- Login Failure Due to High Bandwidth Occupation
- Remote Connect Failure Due to Security Group Settings
- Troubleshooting Linux Instance Issues via VNC and Rescue Mode
- Failed to shut down or restart a CVM
- Network Namespace Creation Failure
- Kernel and IO Issues
- Missing System bin or lib Soft Link
- Suspected Infection with Virus
- "no space left on device" Error During File Creation
- Linux CVM Memory Issues
- Network Related Failures
- Instance-Related Failures
- API Documentation
- History
- Introduction
- API Category
- Making API Requests
- Region APIs
- Instance APIs
- DescribeInstances
- DescribeInstanceFamilyConfigs
- DescribeZoneInstanceConfigInfos
- DescribeInstanceTypeConfigs
- DescribeInstancesOperationLimit
- DescribeInstanceVncUrl
- InquiryPriceRunInstances
- InquiryPriceResetInstance
- InquiryPriceResetInstancesType
- InquiryPriceResizeInstanceDisks
- RunInstances
- StartInstances
- RebootInstances
- StopInstances
- ResetInstance
- TerminateInstances
- ResetInstancesType
- ResizeInstanceDisks
- ResetInstancesPassword
- ModifyInstancesAttribute
- ModifyInstancesProject
- InquirePricePurchaseReservedInstancesOffering
- DescribeReservedInstancesConfigInfos
- DescribeInstancesStatus
- Placement Group APIs
- Image APIs
- Key APIs
- Security Group APIs
- Network APIs
- Instance Launch Template APIs
- Data Types
- Error Codes
- FAQs
- Service Agreement
- Glossary
- Product Introduction
- Tutorial
- Release Notes and Announcements
- Public Image Updates
- Announcements
- CentOS 8 End of Maintenance
- Discontinuation of Support for SUSE Commercial Images
- Price Reduction in Selected Availability Zones
- WebShell Proxy IP Addresses Updates
- Windows Server 2003 System Images End of Support Announcement
- Pay-as-you-go Price Adjustments for Standard S3 CVMs in the Silicon Valley Region
- Vulnerability repairing for Linux images
- Windows Server 2008 R2 Enterprise Edition SP1 64-bit Images End of Support Announcement
- Upgrading Virtio network card drive for Windows CVMs
- Solution to Tomcat Start Failure on Ubuntu14.04
- Stopping supporting for Ubuntu 10.04 images
- About Configuration of Security Group Port 53
- Purchase Guide
- Getting Started
- Operation Guide
- Operation Guide Overview
- Use Limits Overview
- Convenience Features
- Instances
- Creating Instances
- Working with Instance Launch Templates
- Batch Sequential Naming or Pattern String-Based Naming
- Generating API Explorer Reusable Scripts to Create Instances
- Adjusting Configuration
- Querying Information
- Renaming Instances
- Resetting Instance Password
- Managing Instance IPs
- Changing Instance Subnet
- Changing Security Group
- Searching for Instances
- Exporting Instance List
- Renewing Instances
- Querying the Repossession Status of a Spot Instance
- Shutting Down Instances
- Restarting Instances
- Logging in to Linux Instance
- Logging in to Windows instance
- Reinstalling System
- Using Tencent Cloud Automation Tools
- Terminating/Returning Instances
- Instance Repossession
- Spot Instances
- No Charges When Shut Down for Pay-as-You-Go Instances
- Managing Roles
- Starting Up Instances
- Managing Roles
- Images
- Service Migration
- Cloud Disks
- Networking
- Maintenance Tasks
- Security
- Security Groups
- Protection of Sensitive Operations
- Managing Login Password
- Managing SSH Keys
- Spread Placement Group
- Unblocking Port 25
- Tags
- Monitoring and Alarms
- Sample Console Configuration
- Best Practice
- Best Practices
- Choosing the CVM Model
- Migrating CVM Instances
- Setting up a Website
- Building an Environment
- Building a Website
- Building an Application
- Data Backup
- Uploading Local Files to CVM
- Copying Local Files to CVMs
- Uploading Files from MacOS to Windows CVM Using MRD
- Uploading Files from Linux to Windows CVM using RDP
- Uploading Files from Linux to a CVM Using FTP
- Uploading files via WinSCP to a Linux CVM from Windows
- Uploading Files from Windows to a CVM Using FTP
- Uploading Files from Linux or MacOS to Linux CVM via SCP
- Uploading Files from Windows to a Windows CVM via MSTSC
- Other CVM Operations
- Network Performance Test
- High-throughput Network Performance Test
- Building a Visual GUI
- Recovering Data on Linux CVMs
- CVM Access to COS via a Private Network
- Changing Kernel of a Linux Instance Manually
- Managing Disk Space on Windows CVMs
- Setting Up Windows-based AD Domain on a CVM
- Using RemoteFx to Redirect USB Devices in Windows
- Using USB/IP to Share USB Devices in Linux
- Using AVX-512 Instructions to Accelerate AI Applications on CVM
- Building Tencent SGX Confidential Computing Environment
- Configuring Persistent Memory in M6p Instances
- Operations Guide
- Initializing Data Disks
- Environment Configurations
- Installing Software
- User Data
- Work with Operating Systems
- System Activation
- System Updates
- System Shutdown
- Configuring High-performance Power Management
- Windows Recovery Mode
- Use of the atop Monitoring Tools by Linux Instances
- Ensuring Unique SIDs for CVMs Using Sysprep
- Modifying VNC Resolution
- Introduction to Linux Kernel Parameters
- Updating the Virtio ENI Driver
- Modifying SID
- Others
- Troubleshooting
- Instance-Related Failures
- CVM Login Failures
- Windows Instance Login Failures
- Windows Instance Login Failures
- An authentication error occurred when you tried to log in to a Windows instance remotely
- Failed to Reset the CVM Password or the CVM Password Is Invalid
- Windows instance: no remote Desktop license server can provide license
- Requires network-level identity verification
- Problems occurred when you tried to log in to a Windows CVM remotely on Mac
- Failed to log in to a Windows CVM due to high CPU and memory usage
- Failed to connect to a remote computer through Remote Desktop
- Credentials Not Work
- Connection to a Windows CVM through Remote Desktop was denied
- Remote Login Failure Due To Port Issues
- Linux Instance Login Failures
- Linux Instance Login Failures
- Unable to Log in to a Linux Instance via SSH Key
- Failing to log in to a Linux CVM due to high CPU and memory usage
- Remote Login Failure due to Port Issues
- VNC Login Error (Module is Unknown)
- VNC Login Error (Account Locked due to XXX Failed Logins)
- VNC Login Error (Login Failed with Correct Password)
- VNC or SSH Login Error (Permission Denied)
- Login Failure Due to /etc/fstab Configuration Errors
- sshd Configuration File Permissions
- Infinite Loop Call in /etc/profile
- Login Failure Due to Server Isolation
- Login Failure Due to High Bandwidth Occupation
- Remote Connect Failure Due to Security Group Settings
- Troubleshooting Linux Instance Issues via VNC and Rescue Mode
- Failed to shut down or restart a CVM
- Network Namespace Creation Failure
- Kernel and IO Issues
- Missing System bin or lib Soft Link
- Suspected Infection with Virus
- "no space left on device" Error During File Creation
- Linux CVM Memory Issues
- Network Related Failures
- Instance-Related Failures
- API Documentation
- History
- Introduction
- API Category
- Making API Requests
- Region APIs
- Instance APIs
- DescribeInstances
- DescribeInstanceFamilyConfigs
- DescribeZoneInstanceConfigInfos
- DescribeInstanceTypeConfigs
- DescribeInstancesOperationLimit
- DescribeInstanceVncUrl
- InquiryPriceRunInstances
- InquiryPriceResetInstance
- InquiryPriceResetInstancesType
- InquiryPriceResizeInstanceDisks
- RunInstances
- StartInstances
- RebootInstances
- StopInstances
- ResetInstance
- TerminateInstances
- ResetInstancesType
- ResizeInstanceDisks
- ResetInstancesPassword
- ModifyInstancesAttribute
- ModifyInstancesProject
- InquirePricePurchaseReservedInstancesOffering
- DescribeReservedInstancesConfigInfos
- DescribeInstancesStatus
- Placement Group APIs
- Image APIs
- Key APIs
- Security Group APIs
- Network APIs
- Instance Launch Template APIs
- Data Types
- Error Codes
- FAQs
- Service Agreement
- Glossary
Overview
In addition to public images, you can also use custom images to quickly create Tencent Cloud CVM instances with the same configurations.
NoteImages use the CBS snapshot service for data storage:
- A free tier of 50 GB is provided for the Chinese mainland regions. For more information, please see Free Tier.
- Upon the creation of a custom image, a snapshot will also be created by default, which may incur snapshot fees. For more information, please see Billing Overview.
Notes
- Each region supports a maximum of 10 custom images.
- The following directories and files will be removed.
/var/log//root/.bash_historyand/home/ubuntu/.bash_history(for the Ubuntu operating system)- When creating a custom image on a Linux instance, make sure
/etc/fstabdoes not contain data disk configuration. Otherwise, instances created with this image cannot be launched normally. If the Linux instance that is used to create a custom image with a data disk attached, comment out or delete the relevant data disk configurations in/etc/fstab. - The creation process takes ten minutes or more, which depends on the data size of the instance. Please prepare in advance to avoid business impacts.
- CPM 2.0 instances can not be used to create custom images.
- To add a Windows instance to a domain and use a domain account, please execute Sysprep before creating a custom image to ensure that the SID is unique after the instance joins the domain. For more information, please see Ensuring Unique SIDs for CVMs Using Sysprep.
Directions
Shut down an instance (optional)
- Log in to the CVM console and check whether the corresponding instance needs to be shut down.Note
For CVMs created based on public images after July 2018, you can create images without shutting down the instance. For other CVMs, shut down the instance before creating a custom image to ensure that the image has the same environment deployment as the current instance.
- If yes, proceed to the next step.
- If no, proceed to Create a custom image
- On the instance management page, locate the desired instance, and select More > Instance Status > Shut down, as shown in the following figure:
Create a custom image
- Locate the desired instance, and select More > Create Image, as shown in the following figure:
- In the pop-up Create a custom image window, complete the configuration as instructed below:
- Image name and Image description: Custom name and description.
- Create a system disk image only: If checked, only a system disk image of the instance will be created. Otherwise a snapshot of the data disk (if any) will be created at the same time.
- Click Create image.
You can click Image on the left sidebar to view the creation progress in the "Image" page.
Use the custom image to create an instance (optional)
Select the image you created in the image list, and click Create Instance on the right side to purchase the server with the same custom image, as shown in the following figure:
Best Practices
Migrating the data on a data disk
If you need to keep the data on the data disk of the original instance when launching a new instance, you can first take a snapshot of the data disk, and then use this data disk snapshot to create a new CBS data disk.
For more information, please see Creating Cloud Disks Using Snapshots.
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