Deploy Nginx on Ubuntu

Installing Nginx With PHP5 (And PHP-FPM) And MySQL Support (LEMP) On Ubuntu 14.04 LTS

Nginx (pronounced "engine x") is a free, open-source, high-performance HTTP server. Nginx is known for its stability, rich feature set, simple configuration, and low resource consumption. 

I do not issue any guarantee that this will work for you as it depend on system enviornment

 
1 Preliminary Note

I'm running all the steps in this tutorial with root privileges, so make sure you're logged in as root:

sudo su

 
2 Installing MySQL 5

apt-get install mysql-server mysql-client

You will be asked to provide a password for the MySQL root user - this password is valid for the user root@localhost as well as [email protected], so we don't have to specify a MySQL root password manually later on:

New password for the MySQL "root" user: <-- yourrootsqlpassword
Repeat password for the MySQL "root" user: <-- yourrootsqlpassword

 
3 Installing Nginx

As Apache2 is installed by default so we will remove it first & then install nginx:

service apache2 stop
update-rc.d -f apache2 remove
apt-get remove apache2

apt-get install nginx

Start nginx afterwards:

service nginx start

Type in your web server's IP address or hostname into a browser (e.g. http://192.168.0.100), and you should see the following page:

The default nginx document root on Ubuntu 14.04 is /usr/share/nginx/html.

 
4 Installing PHP5

We can make PHP5 work in nginx through PHP-FPM (PHP-FPM (FastCGI Process Manager) is an alternative PHP FastCGI implementation with some additional features useful for sites of any size, especially busier sites) which we install as follows:

apt-get install php5-fpm

PHP-FPM is a daemon process (with the init script php5-fpm) that runs a FastCGI server on the socket /var/run/php5-fpm.sock.

 
5 Configuring nginx

The nginx configuration is in /etc/nginx/nginx.conf which we open now:

vi /etc/nginx/nginx.conf

The configuration is easy to understand (you can learn more about it here: http://wiki.nginx.org/NginxFullExample and here: http://wiki.nginx.org/NginxFullExample2)

(Optional) adjust the number of worker processes and set the keepalive_timeout to a reasonable value:


worker_processes  4;

keepalive_timeout   2;


The virtual hosts are defined in server {} containers. The default vhost is defined in the file /etc/nginx/sites-available/default - let's modify it as follows:

vi /etc/nginx/sites-available/default


server {
        listen 80;
        listen [::]:80 default_server ipv6only=on;

        root /usr/share/nginx/html;
        index index.php index.html index.htm;

        # Make site accessible from http://localhost/
        server_name _;

        location / {
                # First attempt to serve request as file, then
                # as directory, then fall back to displaying a 404.
                try_files $uri $uri/ /index.html;
                # Uncomment to enable naxsi on this location
                # include /etc/nginx/naxsi.rules
        }

        location /doc/ {
                alias /usr/share/doc/;
                autoindex on;
                allow 127.0.0.1;
                allow ::1;
                deny all;
        }

        # Only for nginx-naxsi used with nginx-naxsi-ui : process denied requests
        #location /RequestDenied {
        #       proxy_pass http://127.0.0.1:8080;
        #}

        #error_page 404 /404.html;

        # redirect server error pages to the static page /50x.html
        #
        error_page 500 502 503 504 /50x.html;
        location = /50x.html {
                root /usr/share/nginx/html;
        }

        # pass the PHP scripts to FastCGI server listening on 127.0.0.1:9000
        #
        location ~ \.php$ {
                try_files $uri =404;
                fastcgi_split_path_info ^(.+\.php)(/.+)$;
                # 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;
        }

        # deny access to .htaccess files, if Apache's document root
        # concurs with nginx's one
        #
        location ~ /\.ht {
                deny all;
        }
}


Uncomment both listen lines to make nginx listen on port 80 IPv4 and IPv6.

server_name _; 
makes this a default catchall vhost (of course, you can as well specify a hostname here like www.example.com).

root /usr/share/nginx/html; means that the document root is the directory /usr/share/nginx/html.

The important part for PHP is the location ~ \.php$ {} stanza. Uncomment it to enable it. Please note that I've added the line try_files $uri =404; to prevent zero-day exploits (see http://wiki.nginx.org/Pitfalls#Passing_Uncontrolled_Requests_to_PHP and http://forum.nginx.org/read.php?2,88845,page=3).

Save the file and reload nginx:

service nginx reload

Open /etc/php5/fpm/php.ini...

vi /etc/php5/fpm/php.ini

Set 
; cgi.fix_pathinfo provides *real* PATH_INFO/PATH_TRANSLATED support for CGI.  PHP's
; previous behaviour was to set PATH_TRANSLATED to SCRIPT_FILENAME, and to not grok
; what PATH_INFO is.  For more information on PATH_INFO, see the cgi specs.  Setting
; this to 1 will cause PHP CGI to fix its paths to conform to the spec.  A setting
; of zero causes PHP to behave as before.  Default is 1.  You should fix your scripts
; to use SCRIPT_FILENAME rather than PATH_TRANSLATED.
; http://php.net/cgi.fix-pathinfo

cgi.fix_pathinfo=0


Reload PHP-FPM:

service php5-fpm reload

Create the following PHP file in the document root /usr/share/nginx/html:

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

<?php
phpinfo();
?>

Now we call that file in a browser (e.g. http://0.0.0.your-ip/info.php):

As you see, PHP5 is working, and it's working through FPM/FastCGI, as shown in the Server API line. If you scroll further down, you will see all modules that are already enabled in PHP5. MySQL is not listed there which means we don't have MySQL support in PHP5 yet.

 
6 Getting MySQL Support In PHP5

To get MySQL support in PHP, we can install the php5-mysql package. It's a good idea to install some other PHP5 modules as well as you might need them for your applications. You can search for available PHP5 modules like this:

apt-cache search php5

Pick the ones you need and install them like this:

apt-get install php5-mysql php5-curl php5-gd php5-intl php-pear php5-imagick php5-imap php5-mcrypt php5-memcache php5-ming php5-ps php5-pspell php5-recode php5-snmp php5-sqlite php5-tidy php5-xmlrpc php5-xsl

APC is a free and open PHP opcode cacher for caching and optimizing PHP intermediate code. It's similar to other PHP opcode cachers, such as eAccelerator and Xcache. It is strongly recommended to have one of these installed to speed up your PHP page.

APC can be installed as follows:

apt-get install php-apc

Now reload PHP-FPM:

service php5-fpm reload

Reload http://0.0.0.your-ip/info.php in your browser and scroll down to the modules section again. You should now find lots of new modules there, including the MySQL module:

 
7 Making PHP-FPM Use A TCP Connection

By default PHP-FPM is listening on the socket /var/run/php5-fpm.sock. It is also possible to make PHP-FPM use a TCP connection. To do this, open /etc/php5/fpm/pool.d/www.conf...

vi /etc/php5/fpm/pool.d/www.conf

Make the listen line look as follows:


;listen = /var/run/php5-fpm.sock
listen = 127.0.0.1:9000


This will make PHP-FPM listen on port 9000 on the IP 127.0.0.1 (localhost). Make sure to use a port that is not in use on your system.

Then reload PHP-FPM:

php5-fpm reload

Go through your nginx configuration and all your vhosts and change the line fastcgi_pass unix:/var/run/php5-fpm.sock; to fastcgi_pass 127.0.0.1:9000;, e.g. like this:

vi /etc/nginx/sites-available/default


        location ~ \.php$ {
                try_files $uri =404;
                fastcgi_split_path_info ^(.+\.php)(/.+)$;
                # 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;
        }


Finally reload nginx:

service nginx reload