Cloud Virtual Machine

User Guide

Product Documentation

Copyright Notice

©2013-2025 Tencent Cloud. All rights reserved.

Copyright in this document is exclusively owned by Tencent Cloud. You must not reproduce, modify, copy or distribute in any way, in whole or in part, the contents of this document without Tencent Cloud's the prior written consent.

Trademark Notice

All trademarks associated with Tencent Cloud and its services are owned by the Tencent corporate group, including its parent, subsidiaries and affiliated companies, as the case may be. Trademarks of third parties referred to in this document are owned by their respective proprietors.

Service Statement

This document is intended to provide users with general information about Tencent Cloud's products and services only and does not form part of Tencent Cloud's terms and conditions. Tencent Cloud's products or services are subject to change. Specific products and services and the standards applicable to them are exclusively provided for in Tencent Cloud's applicable terms and conditions.

Contents

User Guide

Operation Guide Overview

Last updated:2024-01-08 09:32:02

Use Limits

Last updated:2025-09-04 15:31:52

Instances

Instance Overview

Last updated:2024-01-08 09:12:28

Instance Specifications

Last updated:2025-09-08 16:27:47

Life Cycle

Last updated:2025-08-05 18:59:50

Instance Creation

Instance Creation Overview

Last updated:2024-01-08 09:32:02

Creating an Instance via the CVM Purchase Page

Last updated:2024-06-25 15:45:04

Creating an Instance via a Custom Image

Last updated:2024-01-08 09:32:02

Purchasing an Instance with the Same Configuration

Last updated:2024-01-08 09:32:02

Generating API Explorer Reusable Scripts to Create Instances

Last updated:2024-01-08 09:32:02

Batch Sequential Naming or Pattern String-Based Naming

Last updated:2024-01-08 09:32:02

Enable Model Comparison

Last updated:2025-09-28 15:10:06

Instance Connection

Connecting to a Linux Instance

Connecting to a Linux Instance via OrcaTerm (Recommended)

Last updated:2025-09-30 16:39:06

Connecting to a Linux Instance via SSH

Last updated:2024-01-08 09:32:02

Connecting to a Linux Instance via VNC

Last updated:2024-01-08 09:32:02

Connecting to a Linux Instance via Remote Login Software

Last updated:2024-01-08 09:32:02

Connecting to a Linux Instance via a Mobile Device

Last updated:2024-01-08 09:32:02

Connecting to a Windows Instance

Connecting to a Windows Instance via WebRDP (Recommended)

Last updated:2024-01-08 09:32:02

Connecting to a Windows Instance via an RDP File

Last updated:2024-01-08 09:32:02

Connecting to a Windows Instance via Remote Desktop

Last updated:2024-01-08 09:32:02

Connecting to a Windows Instance via VNC

Last updated:2024-01-08 09:32:02

Connecting to a Windows Instance via a Mobile Device

Last updated:2024-01-08 09:32:02

Instance IP Address Management

Obtaining the Private IP and Configuring DNS

Last updated:2024-01-08 09:32:02

Modifying a Private IP Address

Last updated:2024-07-10 09:55:57

Obtaining a Public IP Address

Last updated:2024-01-08 09:32:02

Changing a Public IP Address

Last updated:2024-01-08 09:32:02

Retrieving a Public IP Address

Last updated:2024-01-08 09:32:02

Instance Quota Management

Instance Quota Overview

Last updated:2025-08-14 17:22:23

Querying the Instance Purchase Quota

Last updated:2025-10-29 18:05:09

Increasing the Instance Purchase Quota

Last updated:2025-10-29 18:08:45

Querying the Instance Quota Application Records

Last updated:2025-10-29 18:05:45

Instance Launch Template Management

Last updated:2024-05-17 10:55:19

Instance Configuration Adjustment

Suggestions on Adjusting Instance Configuration

Last updated:2024-01-08 09:32:02

Configuring the Instance Specifications

Last updated:2024-01-08 09:32:02

Configuring the Network Settings

Last updated:2024-01-08 09:32:02

Configuring the Security Group

Last updated:2024-01-08 09:32:02

Configuring the Role for an Instance

Last updated:2024-01-08 09:37:00

Renaming an Instance

Last updated:2024-01-08 09:32:02

Enabling or Disabling Hyper-Threading

Last updated:2024-03-26 09:46:28

Using the QAT Accelerator

Last updated:2025-12-10 15:36:57

CVM Resource Tagging and Management

Managing Instance Tags

Managing Instances via Tags

Last updated:2024-01-08 09:41:35

Editing Tags

Last updated:2024-01-08 09:41:35

Managing the Instance Project

Last updated:2024-01-08 09:32:02

Instance Details

Viewing Instance Information

Last updated:2024-01-08 09:32:02

Viewing Instance Metadata

Last updated:2024-11-08 16:02:50

Searching for an Instance

Last updated:2024-01-08 09:32:02

Exporting an Instance

Last updated:2024-01-08 09:32:02

Changing the Instance Status

Starting Up an Instance

Last updated:2024-01-08 09:32:02

Shutting Down an Instance

Last updated:2024-01-08 09:32:02

No Charges When Shut Down for Pay-as-You Go Instances

Last updated:2024-01-08 09:25:40

Shutting Down Pay-as-You-Go Instances to Avoid Charges

Last updated:2024-01-08 09:32:02

Restarting an Instance

Last updated:2024-01-08 09:32:02

Renewing Instances

Last updated:2024-01-08 09:32:02

Terminating/Returning/Reclaiming/Reinstalling an Instance

Enabling Instance Termination Protection

Last updated:2025-09-30 14:11:57

Terminating/Returning an Instance

Last updated:2025-08-05 19:00:31

Terminating/Returning Instance in Console

Last updated:2025-09-05 15:40:05

Reclaiming/Restoring an Instance

Last updated:2024-01-08 09:32:02

Reinstalling the System

Last updated:2024-01-08 09:32:02

Spot Instances

Spot Instance Overview

Last updated:2025-11-20 10:45:11

Creating a Spot Instance

Last updated:2024-01-08 09:32:02

Querying the Reclamation Status of a Spot Instance

Last updated:2024-01-08 09:32:02

Reserved Instances

Reserved Instance Overview

Last updated:2024-01-08 09:25:40

Creating a Reserved Instance

Last updated:2024-01-08 09:25:40

Splitting a Reserved Instance

Last updated:2024-01-08 09:37:00

Merging Reserved Instances

Last updated:2024-01-08 09:37:00

Managing Reserved Instances

Last updated:2024-01-08 09:25:40

Images

Image Overview

Last updated:2024-01-08 09:12:28

Image Types

Last updated:2024-05-16 10:23:34

Public Image

TencentOS Server

TencentOS Server Introduction

Last updated:2025-01-03 16:53:32

TencentOS Server Image Update Log

Last updated:2025-03-04 14:24:16

TencentOS Server 4 Release Notes

Last updated:2025-01-21 18:01:27

TencentOS Server Features

Last updated:2024-11-22 17:16:57

FAQs about TencentOS Server

Last updated:2025-01-03 16:55:14

OpenCloudOS

OpenCloudOS Overview

Last updated:2024-01-08 09:12:28

OpenCloudOS V8 Image Update Log

Last updated:2024-10-14 11:31:53

OpenCloudOS V9 Image Update Log

Last updated:2024-10-14 11:30:34

Creating a Custom Image

Last updated:2025-09-05 17:50:41

Sharing a Custom Image

Last updated:2024-05-16 10:47:13

Canceling Custom Image Sharing

Last updated:2024-05-16 10:46:51

Deleting a Custom Image

Last updated:2024-01-08 09:37:00

Creating an Image

Creating a Linux Image

Last updated:2025-12-12 15:35:34

Checking Virtio Drivers on Linux

Last updated:2025-09-08 16:50:31

Installing Cloud-Init on Linux

Last updated:2025-07-14 15:20:53

Creating a Windows Image

Last updated:2024-10-22 12:01:24

Installing Cloudbase-Init on Windows

Last updated:2024-01-08 09:37:01

Converting the Image Format

Last updated:2024-01-08 09:37:01

Setting the GRUB File Disk Identification Method to UUID

Last updated:2024-01-08 09:37:00

Setting the fstab File Disk Identification Method to UUID

Last updated:2024-01-08 09:37:01

Image Replication

Last updated:2025-09-05 14:44:51

Image Import

Importing an Image

Last updated:2025-09-08 16:44:15

Force-Importing an Image

Last updated:2024-01-08 09:37:01

Image Export

Last updated:2024-01-08 09:37:00

Storage

Storage Overview

Last updated:2024-01-08 09:12:28

Cloud Block Storage

Last updated:2024-01-08 09:12:28

Cloud Object Storage

Last updated:2024-01-08 09:12:28

Snapshot

Last updated:2025-09-08 16:15:45

Migrating a Local Disk to a Cloud Disk

Last updated:2024-01-08 09:37:01

Backup and Restoration

Data Backup

Last updated:2024-01-06 17:43:10

Network

MTU

Last updated:2025-09-05 10:51:47

Common Public IP Addresses

Last updated:2024-01-08 09:37:01

Elastic IP Address

Last updated:2025-09-08 16:14:30

EIP Direct Connection

Last updated:2024-01-08 09:37:01

Elastic Network Interface

Last updated:2024-01-08 09:37:01

Configuring a Public Gateway

Last updated:2024-01-08 09:37:01

Switching the Network to VPC

Last updated:2024-03-26 14:58:42

Security

Security Groups

Security Group Overview

Last updated:2025-11-20 16:59:48

Creating a Security Group

Last updated:2024-01-08 09:41:35

Adding a Security Group Rule

Last updated:2024-01-08 09:41:35

Associating an Instance with a Security Group

Last updated:2024-01-08 09:41:35

Managing a Security Group

Viewing a Security Group

Last updated:2024-01-08 09:41:35

Removing an Instance from a Security Group

Last updated:2024-01-08 09:41:35

Cloning a Security Group

Last updated:2024-01-08 09:41:35

Deleting a Security Group

Last updated:2024-01-08 09:41:35

Adjusting the Security Group Priority

Last updated:2024-01-08 09:41:35

Managing a Security Group Rule

Viewing a Security Group Rule

Last updated:2024-01-08 09:41:35

Modifying a Security Group Rule

Last updated:2024-01-08 09:41:35

Deleting a Security Group Rule

Last updated:2024-01-08 09:41:35

Importing Security Group Rules

Last updated:2024-01-08 09:41:35

Exporting Security Group Rules

Last updated:2024-01-08 09:41:35

Security Group Use Cases

Last updated:2024-01-08 09:41:35

Common Server Ports

Last updated:2024-01-08 09:41:35

Sensitive Operation Protection

Last updated:2024-01-08 09:41:35

Placement Group

Last updated:2024-03-21 09:19:57

Spread Placement Groups

Last updated:2024-01-08 09:41:35

Unblocking Port 25

Last updated:2024-01-08 09:41:35

Passwords/Keys

Connection Passwords

Last updated:2024-01-08 09:12:28

SSH Keys

Last updated:2024-01-08 09:12:28

Managing Connection Passwords

Last updated:2024-01-08 09:41:35

Managing Instance SSH Keys

Last updated:2024-01-08 09:41:35

Resetting Instance Password

Last updated:2024-01-08 09:32:02

Monitoring and Alarms

Monitoring and Alarm Overview

Last updated:2024-01-08 09:12:28

Obtaining Instance Monitoring Data

Last updated:2024-01-08 09:41:35

Self-Service Instance Detection

Last updated:2024-01-08 09:12:28

Creating an Alarm Policy

Last updated:2024-01-08 09:41:35

Ops Management

Maintenance Tasks

Maintenance Task Overview

Last updated:2024-01-08 09:37:01

Maintenance Task Types and Handling Suggestions

Last updated:2024-01-08 09:37:01

Maintenance Authorization and Scheduling

Last updated:2024-01-08 09:37:01

Configuring a Preset Authorization Policy

Last updated:2024-01-08 09:37:01

Configuring Alarm Notifications for a Maintenance Task

Last updated:2024-01-08 09:37:01

Viewing a Maintenance Task

Last updated:2024-01-08 09:37:01

Software Installation on Servers

Obtaining a Package via a Tencent Cloud Software Repository

Last updated:2024-01-06 17:38:11

Installing Software via Apt-get (Ubuntu)

Last updated:2024-01-06 17:38:11

Installing Software via YUM (CentOS)

Last updated:2024-01-06 17:38:11

Installing Software via zypper (openSUSE)

Last updated:2024-01-06 17:38:11

Switching to YUM Repository (CentOS 6)

Last updated:2024-01-06 17:38:11

Installing the chronyd Service (CentOS 8)

Last updated:2024-01-06 17:38:11

Custom Data

Setting Custom Data (Linux)

Last updated:2025-08-14 17:12:48

Setting Custom Data (Windows)

Last updated:2025-08-14 16:47:36

System Ops

Activating the System

Activating Windows with the slmgr Command

Last updated:2024-01-06 17:38:11

Activating the Windows Server System

Last updated:2024-01-06 17:38:11

Updating the System

Last updated:2024-01-06 17:38:11

Handling Shutdown Issues

Last updated:2025-11-20 20:48:40

Configuring High-Performance Power Management

Last updated:2024-01-06 17:38:11

Windows Recovery Mode

Last updated:2024-01-06 17:38:11

Updating the Virtio NIC Driver

Last updated:2024-01-06 17:38:11

Modifying the SID

Last updated:2024-01-06 17:38:11

Modifying the VNC Resolution

Last updated:2024-01-06 17:38:11

Joining a CVM Instance to a Domain and Setting a Unique SID Using Sysprep

Last updated:2024-01-06 17:38:11

Using the atop Monitoring Tool on Linux Instances

Last updated:2025-09-08 17:02:17

Introduction to Linux Kernel Parameters

Last updated:2024-01-06 17:38:11

Installing ACPI for Power Management

Last updated:2024-01-06 17:38:11

Modifying the etc/hosts File Configurations of a Linux Instance

Last updated:2024-01-06 17:38:11

Using the Rescue Mode to Repair the System

Last updated:2024-01-06 17:38:11

Setting a Linux Instance to the Single-User Mode

Last updated:2024-01-06 17:38:11

Troubleshooting Linux Instance Issues via VNC and the Rescue Mode

Last updated:2025-09-08 16:57:09

Allowing Multiple Users to Remotely Log In to a Windows Instance

Last updated:2024-01-06 17:38:11

Modifying the Default Port for Remote Login to a CVM Instance

Last updated:2025-09-05 15:18:20

Obtaining Instance Login Logs

Last updated:2024-01-06 17:38:11

Importing Linux ISO Images to Tencent Cloud CVM Instances

Last updated:2025-11-20 10:34:20

Disabling or Enabling the kdump Service for a Linux Instance

Last updated:2025-11-21 16:29:48

Convenience Features

Switching Instance Page View in Console

Last updated:2024-01-08 09:32:02

Using Tencent Cloud Automation Tools to execute commands

Last updated:2024-01-08 09:32:02