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Overview

Updated on 2023-04-03 GMT+08:00

Application Scenarios

This guide describes how you can build a website using HUAWEI CLOUD.

Small websites are often deployed on a single server, which handles requests from users, stores static and dynamic content, and processes data. As the number of website users increase, database access drastically increases, and a single server fails to meet the service requirements. In this case, two or more servers are required to run the website, and a load balancing service is also required to balance their loads.

To build a website (a forum is used as an example in this guide), the following requirements must be met:

  • Database nodes and service nodes are deployed on different servers.
  • The number of servers is dynamically adjusted as incoming traffic changes over time.
  • Traffic is automatically distributed across multiple servers.
  • The website must be licensed.

    According to China's regulations, Internet Content Provider (ICP) licensing is required if the servers used to deploy the website are located in the Chinese mainland. A domain name that is not licensed cannot be used to access the website.

Solution

You can use the following solution to build a website.

Table 1 Solution details

Requirement

Solution

Service

Database nodes and service nodes are deployed on different servers.

Building the website

  • Buy two Elastic Cloud Servers (ECSs) to replace the physical server. One ECS works as the database node, and the other as the service node.
  • Create a Virtual Private Cloud (VPC) to provide network resources for the two ECSs.
  • Buy an Elastic Volume Service (EVS) disk for each ECS and attach it to each ECS as the data disk if required.

ECS

VPC

(Optional) EVS

The number of servers is dynamically adjusted as incoming traffic changes over time.

Configuring features: Configure Auto Scaling (AS) policies based on service requirements. AS dynamically adds and removes ECSs created from the image of the service node as required to ensure stable and efficient service running.

AS

Traffic is automatically distributed across multiple servers.

Configuring features: Configure Elastic Load Balance (ELB) to automatically distribute the traffic across multiple servers, achieving better fault tolerance and expanding service capabilities for applications.

ELB

Logical Architecture

  1. Bind an elastic IP address (EIP) to ECS 1 and build the database.
  2. Unbind the EIP from ECS 1, bind it to ECS 2, set up the web environment, and deploy web applications.
  3. As the traffic increases, AS adds ECSs created from the image of ECS 2 to the AS group.
  4. Visitors access the website using the EIP of the load balancer, which automatically distributes traffic across multiple ECSs.

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