Operation Guide Overview

Last updated: 2019-07-09 17:39:08


When using the CVM, you may perform various operations, such as logging in, reinstalling operating system, adjusting configuration and resetting password, etc. This document provides an overview of CVM instance and describes how to work with CVM-related products for your reference.


CVM Instance is also known as Cloud Virtual Machine instance. Tencent Cloud CVM instance supports customizing all resources, including CPU, memory, disk, network, security, etc. It also allows easy adjustment of the resources in case of any change in visits, load and other demands. Common features supported by CVM instance are provided as follows:

Common operations

Modifying instance attributes


An Image provides all information required to launch a CVM instance. In another word, an image is the installation disk of a CVM. Tencent Cloud provides four types of images: public image, service marketplace image, custom image and shared image. Common operations supported by image are described as follows.

Common operations

Sharing image

Security Group

Security Group is an important means of network security isolation provided by Tencent Cloud. It is a stateful virtual firewall for filtering packets and is used to set the network access controls for a single or multiple CVMs. The following describes common operations supported by security group and how to set the security group in typical scenarios to meet your business needs. Overview of common ports is provided at the end of this section for your reference.

Common operations

Configuration in typical scenarios


Elastic IP Address (EIP) is also known as elastic IP. It is a static IP designed for dynamic cloud computing, and a fixed public IP in a certain region. With EIPs, you can quickly remap an address to another instance in your account (or NAT gateway instance) to block instance failures. Common operations supported by EIP are provided as follows.

Common operations


Common operations