Open the /etc/apt/sources.list file and add the following two lines at the end of the file:

deb http://packages.dotdeb.org jessie all
deb-src http://packages.dotdeb.org jessie all

Now, execute the following commands in the terminal:

wget https://www.dotdeb.org/dotdeb.gpg
sudo apt-key add dotdeb.gpg
sudo apt-get update

Run the following commands in the terminal:

sudo add-apt-repository ppa:ondrej/php
sudo apt-get update

Now, the repositories are added. Let's install NGINX and PHP 7.

To install NGINX, run the following command in the terminal (Debian and Ubuntu):

sudo apt-get install nginx

After the installation is successful, it can be verified by entering the hostname and IP of the Debian or Ubuntu server. If we see something similar to the following screenshot, then our installation is successful:

The following is a list of three useful NGINX commands:

Now, it's time to install PHP 7 by issuing the following command:

sudo apt-get install php7.0 php7.0-fpm php7.0-mysql php7.0-mcrypt php7.0-cli

This will install PHP 7 along with the other modules mentioned. Also, we installed PHP Cli for the command-line purpose. To verify whether PHP 7 is properly installed, issue the following command in the terminal:

php –v

If it displays the PHP version along with some other details, as shown in the following screenshot, then PHP is properly installed:

Now, we need to configure NGINX to work with PHP 7. First, copy the NGINX default config file /etc/nginx/sites-available/default to /etc/nginx/sites-available/www.packt.com.conf using the following command in the terminal:

cd /etc/nginx/sites-available
sudo cp default www.packt.com.conf
sudo ln –s /etc/nginx /sites-available/www.packt.com.conf /etc/ nginx/sites-enabled/www.packt.com.conf

First, we copied the default configuration file, created another virtual host configuration file, www.packt.com.conf, and then created a symbolic link file to this virtual host file in the sites-enabled folder.

Now, open the /etc/nginx/sites-available/www.packt.com.conf file and add or edit the highlighted code, as shown here:

server {
  server_name your_ip:80;
  root /var/www/html;
  index index.php index.html index.htm;
  location ~ \.php$ {
    fastcgi_pass unix:/var/run/php/php7.0-fpm.sock;
      fastcgi_index index.php;
      include fastcgi_params;
  }
}

The preceding configuration is not a complete configuration file. We copied only those configuration options that are important and that we may want to change.

In the preceding code, our webroot path is /var/www/html, where our PHP files and other application files will be placed. In the index config option, add index.php so that if no file is provided in the URL, NGINX can look for and parse index.php.

We added a location block for PHP that includes a fastcgi_pass option, which has a path to the PHP7 FPM socket. Here, our PHP runs on a Unix socket, which is faster than that of TCP/IP.

After making these changes, restart NGINX. Now, to test whether PHP and NGINX are properly configured, create an info.php file at the root of the webroot folder and place the following code in it:

<?php
  phpinfo();
 ?>

Now, in the browser, type server_ip/info.php, and if you see a PHP configuration page, then congratulations! PHP and NGINX are both properly configured.

First, let's add the Percona Server repository to our system by running the following command in the terminal:

sudo wget https://repo.percona.com/apt/percona-release_0.1-3.$(lsb_release -sc)_all.deb
sudo dpkg -i percona-release_0.1-3.$(lsb_release -sc)_all.deb

The first command will download the repo packages from the Percona repo. The second command will install the downloaded packages and will create a percona-release.list file at /etc/apt/sources.list.d/percona-release.list.

Now, install Percona Server by executing the following command in the terminal:

sudo apt-get update

Now, issue the following command to install Percona Server:

sudo apt-get install percona-server-5.5

The installation process will start. It will take a while to download it.

During the installation, the password for the root user will be asked, as shown in the following screenshot:

It is optional but recommended to enter the password. After entering the password, re-enter the password on the next screen. The installation process will continue.

After the installation is complete, the Percona Server installation can be verified by using the following command:

mysql –-version

It will display the version of Percona Server. As mentioned before, Percona Server is a fork of MySQL, so all the same MySQL commands, queries, and settings can be used.