更新系統(tǒng)：運(yùn)行sudo yum update -y 或sudo dnf update -y 確保系統(tǒng)最新；2. 安裝Apache：使用sudo yum install httpd -y 或sudo dnf install httpd -y 安裝Web 服務(wù)器；3. 啟動(dòng)並啟用服務(wù)：執(zhí)行sudo systemctl start httpd 和sudo systemctl enable httpd 確保開機(jī)自啟；4. 配置防火牆：若啟用firewalld，運(yùn)行sudo firewall-cmd --permanent --add-service=http --add-service=https 和sudo firewall-cmd --reload 開放端口；5. 測(cè)試服務(wù)器：在瀏覽器訪問http://your_server_ip 查看默認(rèn)Apache 頁面；6. 設(shè)置權(quán)限：推薦執(zhí)行sudo chown -R apache:apache /var/www/html/ 和sudo chmod -R 755 /var/www/html/ 確保正確權(quán)限；7. 配置Apache：可編輯/etc/httpd/conf/httpd.conf 修改ServerName 和DocumentRoot 等設(shè)置，完成後重啟服務(wù)；8. 查看日誌：若遇問題，使用sudo tail -f /var/log/httpd/error_log 檢查錯(cuò)誤。 Apache 已成功在CentOS 系統(tǒng)上安裝並運(yùn)行。

Installing Apache (also known as httpd ) on CentOS is a straightforward process, especially if you're using a modern version like CentOS 7, 8, or Stream. Here's a step-by-step guide to get Apache up and running.

1. Update Your System

Before installing any software, it's a good idea to update your system packages:

 sudo yum update -y

Note: On CentOS 8 and later, dnf is used instead of yum , but yum still works as an alias.

2. Install Apache (httpd)

Use the package manager to install the Apache web server:

 sudo yum install httpd -y

Or on newer versions (CentOS 8 /Stream):

 sudo dnf install httpd -y

This installs the Apache HTTP server and its dependencies.

3. Start and Enable Apache Service

Once installed, start the Apache service and enable it to launch at boot:

 sudo systemctl start httpd
sudo systemctl enable httpd

To check if it's running:

 sudo systemctl status httpd

You should see active (running) in the output.

4. Configure Firewall (if enabled)

If you have firewalld enabled (common by default), you need to allow HTTP (port 80) and optionally HTTPS (port 443):

 sudo firewall-cmd --permanent --add-service=http
sudo firewall-cmd --permanent --add-service=https
sudo firewall-cmd --reload

If you're using a cloud server (like AWS, GCP), also ensure the security group allows inbound traffic on port 80.

5. Test the Web Server

Open a web browser and go to your server's public IP address or domain:

 http://your_server_ip

You should see the default Apache test page (eg, "Test Page" or "CentOS HTTP Server").

6. Set Correct Permissions and Ownership (Optional but Recommended)

By default, Apache serves files from /var/www/html . If you plan to host your own website:

• Place your files in /var/www/html/
• Set proper ownership and permissions:

 sudo chown -R apache:apache /var/www/html/
sudo chmod -R 755 /var/www/html/

Replace apache with www-data on some systems, but CentOS uses apache .

7. Configure Apache (Basic Settings)

Edit the main configuration file if needed:

 sudo nano /etc/httpd/conf/httpd.conf

Common changes:

• ServerName your_domain.com
• DocumentRoot "/var/www/html"
• Adjust directory permissions

After making changes, restart Apache:

 sudo systemctl restart httpd

8. Check for Errors

If something isn't working, check the logs:

 sudo tail -f /var/log/httpd/error_log

Or access log:

 sudo tail -f /var/log/httpd/access_log

Summary

• ? Update system
• ? Install httpd
• ? Start and enable Apache
• ? Open firewall ports
• ? Test in browser
• ? Secure permissions and customize as needed

That's it — Apache is now installed and running on your CentOS system.

Basically just a few commands and you're serving web pages.

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