Install Apache and PHP on CentOS 6

This article demonstrates how to install Apache and PHP on CentOS 6. CentOS 6 comes with Apache 2.2.3 and PHP 5.1.6, and you can install them by using the default CentOS Package Manager, yum. The advantages of using yum (as opposed to installing by using source code) are that you get any security updates (when they are distributed) and dependencies are automatically handled.

Install Apache

  1. Run the following command:
  2. Because the server does not start automatically when you install Apache, you must start it manually.

    The following message is displayed:

    The IP address (shown in this example as is used as the server name by default. In the following steps, set the server name for the next time the server is started.
  3. Open the main Apache configuration file.
  4. Toward the end of the file, locate the section that starts with ServerName and gives an example.
  5. Enter your cloud server host name or a fully qualified domain name. In the following example, the host name is demo.
  6. Reload Apache.

Open the port to run Apache

Apache runs on port 80. In some versions of CentOS, a firewall, which is installed by default, blocks access to port 80. Perform the following steps to open the port.

  1. Run the following command:
  2. After adding that instruction, save your firewall rules so that your web server is accessible the next time you reboot.

Test the Apache installation

Navigate to your Cloud Server IP address (for example,

If the default CentOS Apache “welcome” screen is displayed, the installation was successful. Contact Hostnic support if you have any problems.

Configure Apache to run automatically

Now that Apache is installed and working, set to start automatically when the server is rebooted.

  1. Run the following command:
  2. Test to confirm that the setting works.

Install PHP

  1. Run the following command:

    The preceding command does not install all the modules available, just a few common ones.
  2. Reload Apache.
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