About Lemp
LEMP stack is a group of open source software to get web servers up and running. The acronym stands for Linux, nginx (pronounced Engine x), MySQL, and PHP. Since the server is already running Arch Linux, the linux part is taken care of. Here is how to install the rest.
Setup
The steps in this tutorial require the user to have root privileges. You can see how to set that up in the Initial Server Setup Tutorial in steps 3 and 4.
Step One—Pacman
Because pacman, the arch package manager, has a rolling package release, we should update Arch and its repositories before proceeding with any other steps:
sudo pacman -Syu
Step Two—Install MySQL
Once everything is fresh and up to date, we can start to install the server software, beginning with MySQL.
sudo pacman -S mysql
Once MySQL installs, start both mysql and the secure installation process. You will also be able to set the MySQL root password during the installation.
sudo systemctl start mysqld && mysql_secure_installation
When initially prompted for the MySQL root password, you can go ahead and press enter, as it has not yet been set. Your installation should look like this:
Enter current password for root (enter for none): OK, successfully used password, moving on... Setting the root password ensures that nobody can log into the MySQL root user without the proper authorization. Set root password? [Y/n] y New password: Re-enter new password: Password updated successfully! Reloading privilege tables.. ... Success! By default, a MySQL installation has an anonymous user, allowing anyone to log into MySQL without having to have a user account created for them. This is intended only for testing, and to make the installation go a bit smoother. You should remove them before moving into a production environment. Remove anonymous users? [Y/n] y ... Success! Normally, root should only be allowed to connect from 'localhost'. This ensures that someone cannot guess at the root password from the network. Disallow root login remotely? [Y/n] y ... Success! By default, MySQL comes with a database named 'test' that anyone can access. This is also intended only for testing, and should be removed before moving into a production environment. Remove test database and access to it? [Y/n] y - Dropping test database... ... Success! - Removing privileges on test database... ... Success! Reloading the privilege tables will ensure that all changes made so far will take effect immediately. Reload privilege tables now? [Y/n] y ... Success! Cleaning up... All done! If you've completed all of the above steps, your MySQL installation should now be secure. Thanks for using MySQL!
Follow up by restarting MySQL:
sudo systemctl restart mysqld
Step Three—Install nginx
Once MySQL is all set up, we can move on to installing nginx on the VPS.
sudo pacman -S nginx
nginx does not start on its own. To get nginx running, type:
sudo systemctl start nginx
You can confirm that nginx has installed an your web server by directing your browser to your IP address.
You can run the following command to reveal your VPS's IP address.
curl -s icanhazip.com
Step Four—Install PHP-FPM
In order to process php application, we will need to install php-fpm.
sudo pacman -S php-fpm
Once its installed, start it up.
sudo systemctl start php-fpm
Finally, we need to tell nginx to run php using php-fpm. To accomplish this, first open up the nginx configuration file:
sudo nano /etc/nginx/nginx.conf
Find the location block that deals with php applications and replace the text in the section with the following:
location ~ \.php$ {
fastcgi_pass unix:/var/run/php-fpm/php-fpm.sock;
fastcgi_index index.php;
root /srv/http;
include fastcgi.conf;
}Save, exit, and restart nginx:
sudo systemctl restart nginx
Step Five—Create a PHP Info Page
We can quickly see all of the details of the new php configuration.
To set this up, first create a new file:
sudo nano /srv/http/info.php
Add in the following line:
<?php phpinfo(); ?>
Then Save and Exit.
Restart nginx
sudo systemctl restart nginx
You can see the nginx and php-fpm configuration details by visiting http://youripaddress/info.php
Your LEMP stack is now set up and configured on your virtual private server.
Step Six—Configure the Daemons to Start at Boot
To ensure that all of the LEMP programs start automatically after any server restarts:
sudo systemctl enable nginx mysqld php-fpm
With that, LEMP is installed.