Install LEMP (Linux, Nginx, MySQL and PHP) Stack on Ubuntu Linux 14.04 LTS
Nginx Installation
Nginx
is one of the robust web server in Linux world. Nginx is a free, open
source, high performance HTTP server and reverse proxy, as weell as an
IMAP/POP3 proxy server. Now, we are going to install Nginx web server.
First, make sure system is upto date:
$ sudo apt-get update
$ sudo apt-get upgrade
#1 - Download and Install Nginx
The easiest way to download and install Nginx is using apt-get command. Here is the command:
$ sudo apt-get install nginx
Just wait until installation is get done on the system.
#2 - Test Nginx
Once
it get done, you can open your browser and type url http://localhost or
http://your_ip_address to test it. If everything goes normal, you will
see Nginx welcome page:
Welcome nginx page on Ubuntu Linux
MySQL Installation On Ubuntu
MySQL is one of the most powerful database management system in Linux world. Next, we are going to install it with PHP support.
#1 - Install MySQL and PHP support
Type the following command:
$ sudo apt-get install mysql-server php5-mysql
During the installation, MySQL will ask you to enter MySQL root
password, other wise the installation will not continue. Type the
password you want, then press OK to continue the installation.
#2 - Test MySQL
Once mysql installation finished, we can test it. Open your console and type the following command:
$ mysql -u root -p
If you type your password correctly, the you will see the mysql prompt.
#3 - Securing access to MySQL
If
we are going to use MySQL as a production database, we may want to
secure it. MySQL provides a shell script to help us securing it. Just
type the following command on your console:
$ sudo mysql_secure_installation
Here are the steps to do it.
1. Enter your root password
Enter your current root password to continue to the next step.
2.Change the root password
If you want to change it, press Y. Otherwise, press N.
3.Remove anonymous user
It is recommended to remove anonymous user to mitigate risk who can log in into your database.
y
4.Disallow root login remotely
To make sure that no one remote your database as root from another machines, we need to disallow root login remotely.
y
5.Remove test database
Sometimes some MySQL installation will create a database named ëtestí for testing purpose. We can remove it if we donít use it.
y
6.Reload privilege tables
Then we need to reloading the privilege tables to ensure all changes made so far will take effect immediately.
y
7.Done
PHP Installation For Server Side Scripting
Since
PHP is popular, a lot of websites is built using PHP language. As of
January 2013, PHP was installed on more than 240 millions websites. Now
we are going to install PHP on Ubuntu 14.04
#1 - Download and install PHP
As
usual, we can download and install PHP using apt-get command. Just type
the following command on your Ubuntu console or over the ssh based
session:
$ sudo apt-get install php5-fpm
And wait for the installation to complete.
Configure Nginx to work with PHP and MySQL Server on Ubuntu
Now
we have all components installed. The next step is we need to configure
Nginx with PHP and MySQL. Let‘s start to configure them.
#1 - Configure PHP5-FPM
PHP5-FPM configuration file is located at /etc/php5/fpm/php.ini. Open it with your text editor
$ sudo vi /etc/php5/fpm/php.ini
Change this parameter, from:
cgi.fix_pathinfo=1
to:
cgi.fix_pathinfo=0
Save and close the file and then restart php5-fpm service, type:
$ sudo service php5-fpm restart
#2 - Configure Nginx
Nginx
configuration file is located at /etc/nginx/nginx.conf. But basically,
we don‘t need to touch it. The configuration of nginx website is
located in /etc/nginx/sites-available/default file.
Open it, and uncomment lines:
location ~ \.php$ {
fastcgi_split_path_info ^(.+\.php)(/.+)$;
# # NOTE: You should have "cgi.fix_pathinfo = 0;" in php.ini
#
# # With php5-cgi alone:
# fastcgi_pass 127.0.0.1:9000;
# # With php5-fpm:
fastcgi_pass unix:/var/run/php5-fpm.sock;
fastcgi_index index.php;
include fastcgi_params;
}
Then restart the services.
$ sudo service nginx restart
Please make sure, on Ubuntu 14.04, we cannot use fastcgi_pass
127.0.0.1:9000. So make sure that the line is commented. Otherwise, on
my machine, I got this error :
$ tail /var/log/nginx/error.log
2014/11/04 16:57:04 [emerg] 3216#0: "fastcgi_pass" directive is not allowed here in /etc/nginx/sites-enabled/default:59
2014/11/04 16:58:21 [emerg] 3256#0: "fastcgi_pass" directive is not allowed here in /etc/nginx/sites-enabled/default:59
On Ubuntu 14.04, I use the following line:
fastcgi_pass unix:/var/run/php5-fpm.sock
When I restart the Nginx and I still got the following error message:
2014/11/04 17:02:05 [emerg] 3295#0: "fastcgi_pass" directive is not allowed here in /etc/nginx/sites-enabled/default:61
2014/11/04 17:04:58 [emerg] 3410#0: "fastcgi_pass" directive is not allowed here in /etc/nginx/sites-enabled/default:61
Please make sure that you already uncomment this line:
location ~ \.php$ {
#3 - Configure MySQL
After
the configuration section is done, now we need to test them to make
sure that our configuration is working as required. On Ubuntu 14.04 the
root document folder is located in /usr/share/nginx/html. So create a
file called /usr/share/nginx/html/phpinfo.php with the following code:
<? phpinfo(); ?>
After restarting PHP-FPM and Nginx, open the browser and browse to the php file, we got only a blank screen. No error message on the screen. No error message on PHP-FPM and Nginx log file.
Then we changed /usr/share/nginx/html/phpinfo.php file code on the root document of Nginx, as follows:
<?php phpinfo(); ?>
And then open the browser again and type url http://your_ip_address/phpinfo.php
It seem that by default, we can not use short php-tag like this:
<? ... your code ... ?>
To enable short php tag, we need to change the value of short_open_tag parameter on php.ini file:
Change the value from Off to On. Then restart your php5-fpm :
sudo service php5-fpm restart
Then try again to test your phpinfo file. Next, we will see if the
MySQL support is enabled or not. Scroll down the php configuration
screen on your browser, if you see MySQL block there, then MySQL support
already enabled.
You are now ready to use Nginx, PHP5 and MySQL on Ubuntu server. I hope
this quick article help anyone who wish to install Linux, Nginx, PHP
and MySQL on Ubuntu 14.04.