When you first create a new CentOS 8 server, there are a few configuration steps that you should take early on as part of the basic setup. This will increase the security and usability of your server and will give you...

The Apache HTTP server is the most widely-used web server in the world. It provides many powerful features including dynamically loadable modules, robust media support, and extensive integration with other popular sof...

MySQL is an open-source database management system, commonly installed as part of the popular LEMP (Linux, Nginx, MySQL/MariaDB, PHP/Python/Perl) stack. It implements the relational model and Structured Query Language...

In this guide, we will show you how to set up a firewalld firewall for your CentOS 8 server, and cover the basics of managing the firewall with the firewall-cmd administrative tool.

Nginx is one of the most popular web servers in the world and is responsible for hosting some of the largest and highest-traffic sites on the internet. It is more resource-friendly than Apache in most cases and can be...

Building a Certificate Authority (CA) will enable to you configure, test, and run programs that require encrypted connections between a client and server. With a private CA, you can issue certificates for users, serve...

Let’s Encrypt is a Certificate Authority (CA) that facilitates obtaining and installing free TLS/SSL certificates, thereby enabling encrypted HTTPS on web…

In this guide, we will show you three different ways of getting Node.js installed on a CentOS 8 server: using dnf to install the nodejs package from CentOS's default AppStream repository; installing nvm, the Node Vers...

OpenVPN is an open-source Virtual Private Network (VPN) application that lets you create and join a private network securely over the public Internet. In this tutorial you will learn how to install and configure OpenV...

Cron is a time-based job scheduling daemon found in Unix-like operating systems, including Linux distributions. This guide provides an overview of how to schedule tasks using cron's special syntax on a machine running...

PostgreSQL, or Postgres, is a relational database management system that provides an implementation of the SQL querying language. It is a popular choice for many small and large projects and has the advantage of bein...

SSH, or secure shell, is an encrypted protocol used to administer and communicate with servers. When working with a CentOS server, chances are you will spend most of your time in a terminal session connected to your s...

In this tutorial, you will use Let's Encrypt to obtain a free SSL certificate and use it with Nginx on CentOS 8. You will do this by using the Certbot Let's Encrypt client. You will also set up automatic renewal of yo...

This tutorial provides instructions for installing Redis on a CentOS 8 server and using its built-in security features, in coordination with some other security configurations, to keep it from being accessed by unauth...

In this guide, we will show you how to create and configure a self-signed TLS/SSL certificate with the Apache web server on a CentOS 8 machine.

The LEMP software stack is a group of software that can be used to serve dynamic web pages and web applications written in PHP. The name "LEMP" is an acronym that describes a Linux operating system, with an (E)Nginx w...

This guide will show you how to create a new user with sudo access on CentOS 8, without having to modify your server's /etc/sudoers file.

MongoDB is an open-source document database used commonly in modern web applications. It is classified as a NoSQL database because it does not rely on a traditional table-based relational database structure. Instead,...

The Apache web server uses virtual hosts to manage multiple domains on a single instance. Similarly, PHP-FPM uses a daemon to manage multiple PHP versions on a single instance. Together, you can use Apache and PHP-FPM...

This tutorial walks you through configuring a MongoDB installation to securely allow access from a trusted remote computer. This will involve updating your firewall rules to provide the remote server access to MongoDB...