Learn how to install and use Apache Tomcat on CentOS 7. Apache Tomcat is a Java Servlet container developed by Apache to which allows you to deploy Java servlets and JSPs. Apache Tomcat also functions as a web server, which is able to support small to medium-sized websites. This tutorial also covers how to install and use the Tomcat Web Admin Manager, which allows you to manage Tomcat and virtual...
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.
- A server running Linux
- Root or sudo permissions
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For any Cloud Server with Plesk, applications like WordPress should always be installed and managed through the Plesk interface. See our article Use WordPress on a Cloud Server With Plesk for step-by-step instructions.
Checking your Apache version
In the example above, the server is running Apache version 2.4.6.
The current version of WordPress requires Apache version 2.4 or later, in order to run the required version of PHP.
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.
On newer Ubuntu and Debian systems including Ubuntu 14.04, update Apache with the command:
sudo apt-get dist-upgrade
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
On newer CentOS and Red Hat systems including CentOS 7, update Apache with the command:
sudo yum update
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:
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