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

Installation and configuration

1.       To Install Apache 2.4 run :

sudo apt-get install apache2

2. In order to adjust the KeepAlive setting, edit the main Apache configuration file.

File : /etc/apache2/apache2.conf

KeepAlive Off

3. The event module is the default MPM (multi – processing module) for Apache, but PHP uses the perfork module. In order to edit this configuration open the file mpm_prefork.conf file located in /etc/apache2/mods-available.

The following configurations are for a 2GB instance:

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

4. Disable the event module:

sudo a2dismod mpm_event

5. Enable prefork:

sudo a2enmod mpm_prefork

6. Restart Apache:

sudo systemctl restart apache2

Configuration of Virtual Hosts

Note :  By default Apache listens on all IP addresses available on it.

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.

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

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

Repeat the process if you are hosting  multiple websites.

3. To link your virtual host file from sites-available directory to sites-enabled direvtory run :

sudo a2ensite <yourDomainName>.com.conf

In order to disable the virtual host run :

sudo a2dissite <yourDomainName>.com.conf

4. Restart Apache:

sudo systemctl restart apache2

You should have configured the DNS for your domain to point to your instance’s IP address, virtual hosting for your domain should now work.

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

If you require MySQL support install php5-mysql

sudo apt-get install php5-mysql

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. Reload Apache :

sudo service httpd reload

You are now good to go!