In this tutorial you'll set up a Barman backup server, make a backup from a primary PostgreSQL database server, and restore to a standby server. This creates a physical backup of the entire database with snapshots at ...

In this second tutorial about starting Linux services automatically, we'll take a step back and explain init processes in more detail. You should gain a good understanding of how they control a daemon's start-up behav...

This tutorial shows you how to configure system services to automatically restart after a crash or a server reboot. We cover the three most common init systems in this tutorial: System V, Upstart, and systemd.

This tutorial covers creating a simple web application on a two-tier CentOS 7 architecture using a "ground-up" approach. I.e. creating the a database tier first, then the web server. The site will be powered by an Ngi...

VNC or Virtual Network Computing is a platform-independent protocol that enables users to connect to a remote computer system and use its resources from a Graphical User Interface (GUI). It's like remote controlling a...

mysqlslap is a diagnostic tool that can help you measure the performance of MySQL queries. This tutorial shows you how to perform tests of varying complexity, including a test that's practical for production environme...

This is the first article in the Introduction to SELinux series. Learn how to safely enable SELinux, install supporting packages, and understand basic SELinux concepts and terminology.

This is the second article in the Introduction to SELinux series. This article focuses on SELinux types and domains, which relate to file and process contexts. Get into the details of SELinux security policy and learn...

This is the third article in the Introduction to SELinux series. This article focuses on SELinux users and role-based access. Learn how to check logs and resolve errors.

In this article, we will see how we can install emacs in a Linux system and use it for basic text editing. Emacs is also available for graphical window managers for Linux like GNOME; however, we will only cover the "t...

Linux and the applications that run on it can generate all different types of messages, which are recorded in various log files. Linux uses a set of configuration files, directories, programs, commands and daemons to ...