ubuntu14.04LEMP(linux+nginx+mysql+php5)构建环境，_PHP教程

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ubuntu14.04 LEMP(linux+nginx+mysql+php5)构建环境，

Install LEMP (Linux, Nginx, MySQL and PHP) Stack on Ubuntu Linux 14.04 LTS

What is new in Ubuntu 14.04 (Trusty Tahr) version?

You may see it on cyberciti.biz or visit the Ubuntu home page at ubuntu.com.

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
#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
Fig.01: Download and Install Nginx on Ubuntu Linux

#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:
Fig.02: 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
Fig.03: Ubuntu Linux Install MySQL to Manage Site Data with PHP

#2 - Test MySQL

Once mysql installation finished, we can test it. Open your console and type the following command:
$ mysql -u root -p
Fig.04: Ubuntu test Mysql installation

#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
1. Enter your root password

Enter your current root password to continue to the next step.
Fig.05: MySQL enter your root db password

2.Change the root password

If you want to change it, press Y. Otherwise, press N.
Fig.06: MySQL security

3.Remove anonymous user

It is recommended to remove anonymous user to mitigate risk who can log in into your database.
Fig.07: MySQL security

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.
Fig.08: MySQL security

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.
Fig.09: MySQL security

6.Reload privilege tables

Then we need to reloading the privilege tables to ensure all changes made so far will take effect immediately.
Fig.10: MySQL security

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
Fig.12: Install PHP for Server Side Processing on Ubuntu

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
cgi.fix_pathinfo=1
cgi.fix_pathinfo=0
$ 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.
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
$ tail /var/log/nginx/error.log
fastcgi_pass unix:/var/run/php5-fpm.sock

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:

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.