Tuncay Sahin

ICT Engineer | Docent ICT & Trainer

This document describes a basic Apache installation and configuration. Apache is a free open source software which runs web servers.


Check if Apche is already installed

rpm -qa | grep httpd

Install Apache Webserver

yum groupinstall “Web Server”
yum install httpd

Install PHP Support

yum groupinstall “PHP Support”
yum install php php-mysql

List of useful PHP-libraries and -modules

yum search php-

To see more details about what each module does

yum info name of the module

Start Webserver

service httpd start
apachectl start

set the Apache to run automatically when the server boots

chkconfig httpd on

Install LAMP (Linux, Apache, MySQL, PHP)

yum groupinstall “Web Server” “PHP Support” “MySQL Database server” “MySQL Database client”
yum install php-mysql

See PHP on the server by creating testpage

vi /var/www/html/info.php




Visit your site


Restart Apache

service httpd restart

Scrtipt to control the functioning of the Apache httpd daemon

apachectl start|stop|restart|fullstatus|status|configtest

Restart / Stop without aborting currently open connections

apachectl graceful |graceful-stop


The default configuration (/etc/httpd/conf/httpd.conf) is already preconfigured to get Apache Server running. All you need is to write your index.html and your web pages and place them in the default DocumentRoot ( /var/www/html).

Best Practices

There are numerous ways to organize your Apache configuration files. In some cases this will be dictated by your Linux distribution.

  • Minimize changes to /etc/httpd/conf/httpd.conf. It’s easier to upgrade or migrate if this file has few or no changes.
  • Place virtual host definitions in /etc/httpd/conf/vhosts.conf.
  • Put the document root for each website at /var/www/vhosts/[domain name]/httpdocs. Do not include “www” on the domain name. For example with “exampledomain.com” the document root would be /var/www/vhosts/ exampledomain.com /httpdocs.

Here’s a template for the virtual host definition:

NameVirtualHost *:80


<VirtualHost *:80>

ServerAdmin webmaster@ exampledomain.com

ServerName exampledomain.com

ServerAlias www. exampledomain.com

DocumentRoot /var/www/vhosts/ exampledomain.com /httpdocs

ErrorLog logs/ exampledomain.com -error_log

CustomLog logs/ exampledomain.com -access_log combined

<Directory /var/www/vhosts/ exampledomain.com /httpdocs>

AllowOverride All





Make sure the firewall does not block access to port 80 by running:


Allow WWW(HTTP) as “Trusted Services”

Configuring user based security

To allow only authorized users who have passwords, add the following lines to /etc/httpd/conf/httpd.conf.

Just before the commented option for the UserDir directive:

AuthType Basic
AuthName “Test Passwords”
AuthUserFile /etc/httpd/passdb
Require user user1

Configuring Passwords

To create the passwords database passdb in /etc/httpd and add user1 to it run the following command:

htpasswd -c /etc/httpd/passdb user1

To add another user, run the following command without the -c switch (which creates the database):

htpasswd /etc/httpd/passdb user2

Configuring host based security

Add the following to the Directory if you want to allow access only to your network. If your network for example is

# vi /etc/httpd/conf/httpd.conf

Order allow,deny
Allow from


Setting permissions for PHP sites

Secure your site by setting the correct permissions on your DocumentRoot:

Set Apache user as the owner for your DocumentRoot

chown -R apache:apache /var/www/html/yoursite

Modify permissions

chmod -R 400 /var/www/html/yoursitechmod -R a+X /var/www/html/yoursite

In some cases your PHP site requires write access in some folders. For example WordPress sites requires write access into the /wp-content folder to could install plugings, themes or updates.

Provide write permissions to WordPress

chmod -R 775 /var/www/html/yoursite/wp-content


Make sure Apache is running

service httpd status

Start Apache

apachectl start
service httpd start

Make sure Apache is starting during the boot process

chkconfig httpd on

Test the syntax of the configuration

httpd -t

httpd –S

view error log file

tail /var/log/httpd/error_log

view Access log file

tail /var/log/httpd/access_log

restart Apache without disconnecting the user

service httpd reload
apachectl graceful

Meer informatie

Voor meer informatie of voor een persoonlijk adviesgesprek kunt u altijd vrijblijvend contact met mij opnemen.