How to use roles to organize playbooks by ansible galaxy
As you create more playbooks, you may find that you can utilize code from playbooks you have earlier created. For example, a playbook designed to set up a Nginx web…
Prevent PHP Error from Displaying on Browser (display_errors)
PHP is a widely used server-side scripting language, but when displaying PHP errors in the browser, PHP often displays them directly in the web browser. While this might help during…
How to search docker container image in a docker registry?
In today’s fast-paced DevOps world, containers have become the backbone of modern applications. Docker, one of the most widely used container platforms, allows developers and system administrators to create, package,…
How to Install AnyDesk on Ubuntu 22.04, 24.04, and 25.04 Using Terminal
In an interconnected world, remote access is very important, and AnyDesk is used as a reliable solution. Due to the fast and secure remote access feature of any desk, it…
What are Ansible Content Collections and the role of ansible.builtin?
When I first started learning Ansible, I was amazed by how a few lines of YAML could configure an entire Linux server. But as I dug deeper, I noticed something:…
Installation of Red Hat Enterprise Linux 9 (RHEL 9)
Red Hat Enterprise Linux (RHEL) is a powerful and versatile operating system renowned for its stability, security, and performance. However, before embarking on your journey with RHEL, mastering the installation…
How to Encrypt or Decrypt String through Ansible Vault
Encrypting sensitive information in configuration files has become a standard best practice, especially in environments managed using Ansible. This article explores how to encrypt or decrypt a string through Ansible…
How to Remove the Special Permissions of Important Files and Stop Hackers
Linux systems are widely considered secure, but even the most robust system can become vulnerable if permissions are misconfigured. Among the most critical aspects of Linux security are special permissions,…
SSH Security: How to Set LoginGraceTime for Maximum Protection
One common but fixable problem is not optimizing the LoginGraceTime SSH setting. Left on default, it can open your system to unnecessary risk. This article explores what LoginGraceTime is in…
Exploring ansible.builtin.yum: Managing Package with Ansible
Managing software packages manually on Linux systems—especially across dozens or hundreds of servers—is both time-consuming and error-prone. As a Linux system administrator, DevOps professional. Mastering Ansible’s yum and dnf modules…
How to Install VirtualBox on Ubuntu 22.04, 24.04, and 25.04 (Step-by-Step Guide)
When I first started experimenting with virtualization, one of the biggest challenges I faced was figuring out the right way to set up VirtualBox on Ubuntu. Whether you’re running Ubuntu…