LAMP on CentOS 6
Updated by Alex Fornuto
A LAMP (Linux, Apache, MySQL, PHP) stack is a common web stack used to prepare servers for hosting web content. This guide shows you how to install a LAMP stack on a CentOS 6 system.
This guide is written for a non-root user. Commands that require elevated privileges are prefixed with
sudo. If you’re not familiar with the
sudocommand, you can check our Users and Groups guide.
Before You Begin
To check your hostname run:
hostname hostname -f
The first command should show your short hostname, and the second should show your fully qualified domain name (FQDN).
Update your system:
sudo yum update
Install and Configure
Install Apache 2:
sudo yum install httpd
/etc/httpd/conf/to adjust the resource use settings. The settings shown below are a good starting point for a Linode 2GB:
Before changing any configuration files, it is advised that you make a backup of the file. To make a backup:
cp /etc/httpd/conf/httpd.conf ~/httpd.conf.backup
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KeepAlive Off ... <IfModule prefork.c> StartServers 4 MinSpareServers 20 MaxSpareServers 40 MaxClients 200 MaxRequestsPerChild 4500 </IfModule>
Configure Apache Virtual Hosts
There are different ways to set up virtual hosts; however, the method below is recommended. By default, Apache listens on all IP addresses available to it.
Create a file under
vhost.conf. Replace instances of
example.comwith your own domain information:
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NameVirtualHost *:80 <VirtualHost *:80> ServerAdmin firstname.lastname@example.org ServerName example.com ServerAlias www.example.com DocumentRoot /var/www/example.com/public_html/ ErrorLog /var/www/example.com/logs/error.log CustomLog /var/www/example.com/logs/access.log combined </VirtualHost>
Additional code blocks can be added to the file for any other domains you with to host on the Linode.
CustomLogentries are suggested for more fine-grained logging, but are not required. If they are defined (as shown above), the
logsdirectories must be created before you restart Apache.
Create the directories referenced above:
sudo mkdir -p /var/www/example.com/public_html sudo mkdir /var/www/example.com/logs
Start Apache for the first time, and set it to run at boot:
sudo service httpd start sudo /sbin/chkconfig --levels 235 httpd on
You should new be able to view a default Apache page on your website.
Anytime you change an option in your
vhost.conffile, or any other Apache configuration file, remember to reload the configuration with the following command:
sudo service httpd reload
Install and Configure
Install the MySQL package:
sudo yum install mysql-server
Start MySQL, and set it to run at boot:
sudo service mysqld start sudo /sbin/chkconfig --levels 235 mysqld on
mysql_secure_installationto secure MySQL. You will be given the option to change the root password, remove anonymous user accounts, disable root logins outside of localhost, and remove test databases and reload privileges. It is recommended that you answer yes to these options:
Create a MySQL Database
Log in to MySQL:
mysql -u root -p
Enter MySQL’s root password. You will then be presented with a MySQL prompt.
Create a database and user:
create database webdata; grant all on webdata.* to 'webuser' identified by 'password';
In the above example
webdatais the name of the database,
webuserthe user, and
passworda strong password.
With Apache and MySQL installed you are ready to move on to installing PHP.
Install and Configure
sudo yum install php php-pear
If you wish to install MySQL support for PHP also install the
sudo yum install php-mysql
/etc/php.inifor better error messages and logs, and upgraded performance. These modifications provide a good starting point for a Linode 2GB:
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error_reporting = E_COMPILE_ERROR|E_RECOVERABLE_ERROR|E_ERROR|E_CORE_ERROR error_log = /var/log/php/error.log max_input_time = 30
Ensure that all the lines noted above are uncommented. A commented line begins with a semicolon (;).
Create the log directory for PHP and give the Apache user ownership:
sudo mkdir /var/log/php sudo chown apache /var/log/php
sudo service httpd restart
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This guide is published under a CC BY-ND 4.0 license.