Apache , also known as Apache HTTP server is a free, open-source, and cross-platform HTTP server, including powerful features, and can be extended by a wide variety of modules. It is part of the LAMP stack (Linux, Apache, MySQL, PHP) that powers much of the internet.

Here at Fixwebnode , as part of our Server Management Services , we regularly help our Customers to perform related Apache queries.

In this context, we shall look into how to install Apache on CentOS 9 Stream.

Main Features of Apache Web Server includes:

• Handling of static files.
• Loadable dynamic modules.
• Auto-indexing.
• .htaccess.
• Compatible with IPv6.
• Supports HTTP/2.
• FTP connections.
• Gzip compression and decompression.
• Bandwidth throttling.
• Perl, PHP, Lua scripts.
• Load balancing.
• Session tracking.
• URL rewriting.
• Geolocation based on IP address.

Steps to Install Apache on CentOS 9 Stream

1. Perform System Update    

To begin, make sure your system is up-to-date with the below command:

$ sudo dnf update
	
	
	
	
	
	
	
	
	
	
	
	
	
	

2. Install the Apache on the system    

By default, Apache is available on the CentOS 9 Stream base repository. Now we run the following command to install Apache HTTP server to your system:

$ sudo dnf install httpd httpd-tools
	
	
	
	
	
	
	
	
	
	
	
	
	
	

Once the installation is complete, now enable Apache (to start automatically upon system boot), start the webserver, and verify the status using the commands below:

$ sudo systemctl start httpd
	
	
	
	
	
	
	
	
	
	
	
	
$ sudo systemctl enable httpd
	
	
	
	
	
	
	
	
	
	
	
	
$ sudo systemctl status httpd
	
	
	
	
	
	
	
	
	
	
	
	
	
	

To verify the Apache version, use the following command to confirm:

$ httpd -v
	
	
	
	
	
	
	
	
	
	
	
	
	
	

3. Configure Firewall    

If your server is protected by the firewall and you haven't opened the HTTP and HTTPS ports. Enable them with the following commands below:

$ sudo firewall-cmd --permanent --zone=public --add-service=http 
	
	
	
	
	
	
	
	
	
	
	
	
$ sudo firewall-cmd --permanent --zone=public --add-service=https
	
	
	
	
	
	
	
	
	
	
	
	
$ sudo firewall-cmd --reload
	
	
	
	
	
	
	
	
	
	
	
	
	
	

4 Confirm Apache Installation    

Once successfully installed, open your favorite web browser and enter the URL http://your-IP-address  and you will see the default Apache HTTP server welcome page .

About Apache Configuration File's Structure ?

You should know the location of the configuration files and the Apache root directory in case you need to modify the configuration:

• All Apache configuration files are located in the /etc/httpd directory.
• The main Apache configuration file is /etc/httpd/conf/httpd.conf.
• Configuration files ending with .conf located in the /etc/httpd/conf.d the directory is included in the main Apache configuration file.
• Configuration files that are responsible for loading various Apache modules are located in the /etc/httpd/conf.modules.d directory.
• Apache vhost files must end with .conf and be stored in /etc/httpd/conf.d directory. You can have as many vhosts as you need. Creating a separate configuration file (vhost) for each domain makes the server easier to maintain.

[Need help in fixing Apache Configuration issues ?  We can help you . ]