How to install and configure Apache for WordPress

Learn how to install and configure Apache for WordPress. WordPress is one of the world's most popular CMS and blogging software packages, and its famous "five minute install" makes it one of the easiest to use.

Most WordPress users will find that it works on their server without having to make any updates or changes to Apache. However, in some cases Apache may need to be updated or configured in order to run WordPress.

    Requirements

    • A server running Linux
    • Root or sudo permissions

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    Checking your Apache version

    You can find your version of Apache with the following commands:

    • CentOS and Red Hat: sudo httpd -v
    • Ubuntu and Debian: sudo apache2 -v

    This will return information about your Apache server.

    In the example above, the server is running Apache version 2.4.6.

    Updating Apache

    The current version of WordPress requires Apache version 2.4 or later, in order to run the required version of PHP.

     

    Note

    Updating to the newest version of Apache can cause issues with older web software packages. Consult this list of changes to ensure that your website(s) will not be affected before you update Apache.

    Ubuntu 14.04

    On newer Ubuntu and Debian systems including Ubuntu 14.04, update Apache with the command:

    sudo apt-get dist-upgrade

    CentOS 6

    On older CentOS and Red Hat systems including CentOS 6, update Apache with the commands:

      cd /etc/yum.repos.d/
      sudo wget http://repos.fedorapeople.org/repos/jkaluza/httpd24/epel-httpd24.repo
      sudo yum install httpd24.x86_64
      sudo chkconfig httpd off
      sudo service httpd24-httpd start

    You can then check the version of the new installation with the command:

    sudo /opt/rh/httpd24/root/usr/sbin/httpd -version

    CentOS 7

    On newer CentOS and Red Hat systems including CentOS 7, update Apache with the command:

    sudo yum update

    Installing mod_rewrite

    WordPress uses Apache's mod_rewrite in order to format (and change the format of) its links.

    To see if mod_rewrite is installed on your system:

    • Red Hat and CentOS: sudo httpd -M | grep rewrite_module
    • Ubuntu and Debian: sudo apache2ctl -M | grep rewrite_module

    mod_rewrite is installed by default on CentOS and Red Hat systems. To install this module on Ubuntu and Debian use the command:

    sudo a2enmod rewrite

    After installing it, you will need to restart Apache services with the command:

    service apache2 restart

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    Configuring Apache to allow mod_rewrite

    In some cases, Apache may need to be configured in order to allow mod_rewrite to run. To do this, you will first need to locate and edit the relevant Apache configuration file.

    The specific file will depend on your server's web hosting setup. By default, the main Apache configuration file for your server's primary domain is:

    • Red Hat and CentOS: /etc/httpd/conf/httpd.conf
    • Ubuntu and Debian: /etc/apache2/apache2.conf

    There may also be separate Apache configuration files for each individual domain. By common convention, these are usually found at:

    • Red Hat and CentOS: /etc/httpd/conf.d/[your domain name].conf
    • Ubuntu and Debian: /etc/apache2/sites-available/[your domain name].conf

    You will need to edit the file and find the directive:

    AllowOverride None

    Change it to:

    AllowOverride All
    Order allow,deny
    Allow from all

    Save and exit the file, then restart Apache with the command:

    • Red Hat and CentOS: sudo systemctl restart apache
    • Ubuntu and Debian: sudo service apache2 restart

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