The following guide describes how to install a LEMP stack on Centos 6.5 combining PHP 5.4 and MySQL 5.6

Step 1 – Install Required Repositories

The following steps install and configure the required repositories.

rpm -Uvh http://dl.fedoraproject.org/pub/epel/6/x86_64/epel-release-6-8.noarch.rpm
rpm -Uvh http://rpms.famillecollet.com/enterprise/remi-release-6.rpm
rpm -Uvh http://dev.mysql.com/get/mysql-community-release-el6-5.noarch.rpm
rpm -Uvh http://nginx.org/packages/centos/6/noarch/RPMS/nginx-release-centos-6-0.el6.ngx.noarch.rpm

Disable the repositories to ensure correct depency management

sed -i s'/enabled=1/enabled=0/' /etc/yum.repos.d/epel.repo
sed -i s'/enabled=1/enabled=0/' /etc/yum.repos.d/remi.repo
sed -i s'/enabled=1/enabled=0/' /etc/yum.repos.d/mysql-community.repo
sed -i s'/enabled=1/enabled=0/' /etc/yum.repos.d/nginx.repo

Step 2 – Install Software packages

The following steps install the required MySQL 5.6, PHP 5.4 and Nginx.

yum -y --enablerepo=mysql56-community,remi install php-fpm
yum -y --enablerepo=mysql56-community,remi install php-mysqlnd
yum -y --enablerepo=mysql56-community,remi install mysql-server
yum -y --enablerepo=nginx install nginx

Step 3 – Configure Software packages

Set the user and group for php-fpm

sed -i s'/user = apache/user = nginx/' /etc/php-fpm.d/www.conf
sed -i s'/group = apache/group = nginx/' /etc/php-fpm.d/www.conf

Edit the nginx config file to set site defaults

vi /etc/nginx/conf.d/default.conf

server {
    listen       80;                            # listen port
    server_name  localhost;                     # Server name (www.servermule.com)
    location / {
        root   /usr/share/nginx/html;           # Document root
        index index.php  index.html index.htm;
    }
    location ~ \.php$ {
        root           /usr/share/nginx/html;   # Document root
        fastcgi_pass   127.0.0.1:9000;
        fastcgi_index  index.php;
        fastcgi_param  SCRIPT_FILENAME  $document_root$fastcgi_script_name;
        include        fastcgi_params;
    }
    error_page  404              /404.html;
    location = /404.html {
        root   /usr/share/nginx/html;
    }
    error_page   500 502 503 504  /50x.html;
    location = /50x.html {
        root   /usr/share/nginx/html;
    }
}

Step 4 – Start up the servers

To Start up MySQL, Nginx and PHP-FPM

service mysqld start
service php-fpm start
service nginx start

To set MySQL, PHP-FPM and Nginx to restart in case of a server reboot

chkconfig mysqld on
chkconfig php-fpm on
chkconfig nginx on

Step 5 – Test that it’s all working together

Create a phpinfo page

echo '<?php phpinfo(); ?>' > /usr/share/nginx/html/phpinfo.php

Navigate to the site in your browser and check that the php information is returned</>

http://ip address/phpinfo.php

Create a mysql access page

vi /usr/share/nginx/html/mysql.php

enter the following php code

<?php
$con = mysql_connect("localhost","root","");
if (!$con)
  {
  die('Unable to connect to the server: ' . mysql_error());
  }
  echo "Success - PHP has Connected to MySQL...!";
?>
Navigate to the site in your browser and check that "Success - PHP has Connected to MySQL...!" is returned</>
http://ip address/mysql.php
Step 6 - Secure MySQL
Optionally to set the root password and secure the installation run the secure script as follows.
mysql_secure_installation