CentOS in Action: Server Management and Web Hosting

CentOS is widely used in server management and web hosting. Specific methods include: 1) using yum and systemctl to manage the server, 2) install and configure Nginx for web hosting, 3) use top and mpstat to optimize performance, 4) correctly configure the firewall and manage disk space to avoid common problems.

introduction

In today's digitalization, server management and web hosting are the skills that every technician needs to master. Today we are going to talk about CentOS, a popular Linux distribution that plays a vital role in server management and web hosting. Through this article, you will learn not only how to use CentOS for server management, but also master the basic tips and best practices of web hosting. Whether you are a beginner or experienced technician, you can benefit greatly from it.

The charm of CentOS

CentOS is known for its stability and security, which is one of the reasons why it is highly favored in the server field. Its life cycle is up to 10 years, which means you can rely on it for a long time to run critical business applications. CentOS is based on RHEL (Red Hat Enterprise Linux), so it inherits many of the benefits of RHEL while being free and open source, which is a boon for small businesses or individual developers.

I remember when I first started to get involved in CentOS, what impressed me the most was its command line interface. Although it seemed a bit complicated at first, once you get familiar with it, you will find its power. With a few simple commands, you can complete the entire process from installation to configuration.

The Art of Server Management

CentOS provides a range of powerful tools to manage servers, from basic system maintenance to complex network configurations, all inclusive. First of all, you need to be familiar with some commonly used command line tools, such as yum for package management and systemctl for service management.

# Update all installed packages sudo yum update
<h1 id="Start-a-service">Start a service</h1><p> sudo systemctl start httpd</p><h1 id="Check-service-status"> Check service status</h1><p> sudo systemctl status httpd</p>

In actual operation, I found that when using yum for package management, you may encounter dependency problems. At this time, you need to patiently resolve these dependencies, and sometimes even need to manually install certain packages. In addition, the use of systemctl also requires attention to the service dependencies to ensure that the service is started in the correct order.

Web Hosting Practice

Building a web server on CentOS is a very common requirement. Apache and Nginx are two popular web server software. I personally prefer to use Nginx because it has better performance and configuration flexibility.

# Install Nginx
sudo yum install nginx
<h1 id="Start-Nginx">Start Nginx</h1><p> sudo systemctl start nginx</p><h1 id="Configure-Nginx"> Configure Nginx</h1><p> sudo nano /etc/nginx/nginx.conf</p>

When configuring Nginx, I like to process static files and dynamic content separately, which can significantly improve the website's responsiveness. At the same time, remember to set up logging so that you can quickly locate and resolve problems when encountering problems.

Performance optimization and best practices

Performance optimization is a timeless topic in server management and web hosting. CentOS provides many tools to help you monitor and optimize system performance, such as top , htop , mpstat , etc.

# Check system resource usage top
<h1 id="Check-CPU-usage">Check CPU usage</h1><p> mpstat -P ALL</p>

In practical applications, I found that regular cleaning of system logs and temporary files can significantly improve system performance. At the same time, rationally configuring cache is also the key to improving the performance of Web servers. Remember to check and update the system regularly for safety and stability.

Trapped and sharing of experience

I have stepped on a lot of tricks in the process of using CentOS for server management and web hosting. For example, when first configuring a firewall, the server cannot be accessed due to improper settings. After solving this problem, I learned how to properly configure firewall rules.

# Allow HTTP and HTTPS traffic sudo firewall-cmd --permanent --add-service=http
sudo firewall-cmd --permanent --add-service=https
sudo firewall-cmd --reload

Another common problem is insufficient disk space, when you need to clean useless files in time, or consider expanding disk space. My suggestion is to check disk usage regularly and make plans in advance.

Conclusion

The application of CentOS in server management and web hosting is so extensive and in-depth. Through this article, I hope you can have a more comprehensive understanding of CentOS. Whether you are a beginner or an experienced veteran, you can find useful information and skills. Remember that practice is the best way to master these skills. Continuously trying and learning, you will find the charm of CentOS.

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