What is LAMP?

LAMP is a common web stack which stands for Linux, Apache, MySQL and PHP. It is used to prepare servers in order to host web content.

1.       To check your short hostname use the following command:

hostname

2.       To check your FQDN (fully qualified domain name) use the following command:

hostname -f

3. To update your instance’s repositories and packages run:

sudo apt-get update && sudo apt-get upgrade

Apache Web

Installation and configuration

1.       To Install Apache 2.4 run:

sudo apt-get install apache2

2. Edit the main Apache configuration file to turn off the KeepAlive setting.

File : /etc/apache2/apache2.conf

KeepAlive Off

3. To edit the values according to your requirements open /etc/apache2/mods-available/mpm_prefork.conf.

The following configurations are for a 2GB instance:

File : /etc/apache2/mods-available/mpm_prefork.conf

# prefork MPM
# StartServers: number of server processes to start
# MinSpareServers: minimum number of server processes which are kept spare
# MaxSpareServers: maximum number of server processes which are kept spare
# MaxRequestWorkers: maximum number of server processes allowed to start
# MaxConnectionsPerChild: maximum number of requests a server process serves

<IfModule mpm_prefork_module>
        StartServers              4
        MinSpareServers           20
        MaxSpareServers           40
        MaxRequestWorkers         200
        MaxConnectionsPerChild    4500
</IfModule>

# vim: syntax=apache ts=4 sw=4 sts=4 sr noet

4. On Debian 8, the event module should be disabled since it is enabled by default.

sudo a2dismod mpm_event
sudo a2enmod mpm_prefork

5. Restart Apache:

sudo systemctl restart apache2

Configuration name based virtual hosts

You can have as many virtual host files as needed to support a number of domains hosted in the instance.

1. Create new directories for your websites and website logs.

sudo mkdir -p /var/www/html/example.com/public_html
sudo mkdir /var/www/html/<yourDomainName>.com/logs

Repeat the process if you are hosting multiple websites.

1. Create an <yourDomainName>.com.conf file in /etc/apache2/sites-available.

File : /etc/apache2/sites-available/<yourDomainName>.com.conf

<VirtualHost *:80>
     ServerAdmin webmaster@<yourDomainName>.com
     ServerName <yourDomainName>.com
     ServerAlias www.<yourDomainName>.com
     DocumentRoot /var/www/html/<yourDomainName>.com/public_html/
     ErrorLog /var/www/html/<yourDomainName>.com/logs/error.log
     CustomLog /var/www/html/<yourDomainName>.com/logs/access.log combined
</VirtualHost>

Repeat this process if you are hosting multiple domains.

File : /etc/apache2/sites-available/<yourDomainName>.org.conf

<VirtualHost *:80>
     ServerAdmin webmaster@<yourDomainName>.org     
     ServerName <yourDomainName>.org
     ServerAlias www.<yourDomainName>.org
     DocumentRoot /var/www/html/<yourDomainName>.org/public_html/
     ErrorLog /var/www/html/<yourDomainName>.org/logs/error.log
     CustomLog /var/www/html/<yourDomainName>.org/logs/access.log combined
</VirtualHost>

3. Link your virtual hosts file from sites- available directory to sites-enabled directory.

sudo a2ensite <yourDomainName>.com.conf
sudo a2ensite <yourDomainName>.org.conf

Note: In order to disable a site

sudo a2dissite <yourDomainName>.com.conf

4. Restart Apache:

sudo systemctl restart apache2

MySQL

Installation and configuration

1.       To Install MySQL package run:

sudo yum install mysql-server

2. In order to securely install MySQL run:

mysql_secure_installation

Create a MySQL Database

1. Login to MySQL:

mysql -u root -p

2. Create a database and user:

create database tableName;
grant all on tableName.* to 'username' identified by 'password';

3. Exit MySQL:

quit

PHP

Installation and configuration

1.       To Install PHP5 and the PHP Extension  and Application Repository run:

sudo apt-get install php5 php-pear

2.Edit /etc/php5/apache2/php.ini and change the following values.

The following configurations are for a 2GB instance:

File : /etc/php5/apache2/php.ini

error_reporting = E_COMPILE_ERROR|E_RECOVERABLE_ERROR|E_ERROR|E_CORE_ERROR
error_log = /var/log/php/error.log
max_input_time = 30

Note: All the lines above should be uncommented. (the ; should be removed ) :

3. Create the PHP log directory:

sudo mkdir /var/log/php

4. Give ownership to the Apache user:

sudo chown apache /var/log/php

5. Restart Apache:

sudo service httpd restart