Background
In order to help users use ECS safely and reliably to the greatest extent, the best practices for ECS configuration can generally be made from the following aspects:
· Consider business load requirements
· Network and security
· Data backup and restoration policy
· System monitoring and alarm
Consider business load requirements
When choosing ECS, you need to select the appropriate instance type and specification based on the needs of the application, taking into account factors such as performance requirements, application requirements, and cost-effectiveness.
Performance requirements
Performance requirements are the primary consideration when choosing the ECS configuration. Performance requirements include computing performance, storage performance and network performance.
· The more powerful the computing capacity, the more requests the server can handle simultaneously. If the application requires a large amount of computing resources, such as large-scale data analysis, scientific computing, etc., you need to choose a higher CPU and memory configuration.
· Storage performance refers to the speed at which the server reads and writes data. For applications that frequently read and write large amounts of data, such as databases and video processing, you need to select a storage device with high configuration.
· Network performance refers to the network bandwidth and latency of the server. For applications that require large amounts of data transfer, for example, live video streaming and gaming, you need to choose a configuration with high network bandwidth. In addition, latency is also an important indicator, especially for applications that require high real-time performance, including online transactions and remote meetings.
Application requirements
Different applications have different characteristics and requirements, so it is necessary to choose the configuration suitable for the application.
· Operating system: ECS supports multiple operating systems, such as Windows and Linux. The choice of operating system needs to be decided based on the actual needs of the application, including whether to support specific software, whether to require a specific development environment.
· Database: If the application requires the use of a database, the type and size of the database need to be considered. For large databases, you need to select a server with high configuration to ensure the performance and stability of the database.
· Application software: If the application needs to run specific software, such as Web server, application server or big data platform, you need to select a server that is suitable for running these softwares.
Cost-effectiveness
In cloud computing, users only need to purchase and use resources on demand without investing large amounts of money in hardware equipment, so cost-effectiveness is very important.
· Price: The price of ECS is related to the configuration, generally speaking, the higher the configuration, the higher the price. When choosing a configuration, you need to take into account the needs of the application and your budget.
· Autoscaling: ECS can be used with autoscaling to flexibly adjust resources according to application requirements. When choosing a configuration, you can take into account future application developments and changes. It can be used with load balancing to achieve balanced distribution of business loads.
When choosing ECS configuration, you need to comprehensively consider factors such as performance requirements, application requirements, and cost-effectiveness, and select the cloud server that best suits the business load requirements.
Network and security
ECS usually needs to be used in conjunction with the network, so it is important to consider the security of network design and configure several security measures to ensure the security of cloud server.
Network logical isolation
VPC provides an isolated virtual network environment where you can create your own private network on the cloud platform. Deploying ECS in VPC can better control network access and protect data security. The methods for setting up network security are as follows:
· Using security groups: A security group is a virtual firewall used to control the network flow of ECS. Configure appropriate security group rules to restrict inbound and outbound traffic and only allow access to necessary ports and protocols. For details, see ECS - Security Group Configuration Example.
· Using network ACL: Network ACL is a security policy that controls traffic at the subnet level. By configuring network ACL rules, you can implement access control to all ECS instances in the subnet to prevent unauthorized access. For details, see VPC - Create ACL.
Secure login
In order to ensure that the ECS is created successfully and the status is normal, it is recommended that you remotely log in to the ECS through VNC for the first time. If the login is successful, it means that the ECS resource status is normal.
Try to use the key method to log in to the Linux ECS. In addition, you can take appropriate measures to harden the security for logging in to the Linux server via SSH. For details, see Hardening the Security for Logging in to the Linux Server via SSH.
For an instance that logs in with a password, it is necessary to change the password regularly.
For details, see:
ECS - Log in to the Windows ECS
Security product configuration
Security protection: In order to achieve high-level security protection for ECS, it is recommended that you activate the Server Security Defender service according to your protection requirements. Through continuous monitoring and analysis of server information and behavior, Server Security Defender can quickly and accurately discover security threats and intrusion events to ensure the security of cloud servers. For details, see Server Security Defender - Getting Started.
Network protection: To prevent the elastic IP bound to the ECS from being attacked, you are advised to use the Anti-DDoS service. For details, see Anti-DDoS Traffic Cleaning - Enabling Anti-DDoS.
Data backup and restoration policy
Data backup and restoration
In order to quickly recover data in the event of virus intrusion, human error deletion, software and hardware failures, it is recommended that you regularly backup the data. You can use eSurfing Cloud Backup Service, which provides easy-to-use backup capabilities. When an exception occurs, data can be restored to any backup point to reduce economic losses. For details, see Cloud Backup - Getting Started.
High availability disaster recovery service deployment
To achieve high service disaster recovery capability, you are advised to deploy cloud server resources in different availability zones of the same region. For details, see Region and Availability Zone.
System monitoring and alarm
Monitoring management
In order to enable users to obtain the performance metrics and running status of ECS in a timely manner, it is recommended that you use the Cloud Eye service to monitor instances in real time, and provide alarms and notifications when the instance is abnormal. For details, see Cloud Eye Service.
Log management
To improve the availability and performance of ECS and applications, it is recommended to collect log data through Log Audit service. By analyzing and processing massive log data, real-time decision analysis, equipment O&M management and user business trend analysis capabilities can be achieved. For details, see Log Audit Service.