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How to Install Ruby 3.3 with rbenv on RHEL 9 — step-by-step RHEL 9 tutorial on Progressive Robot

How to Install Ruby 3.3 with rbenv on RHEL 9

Ruby is a dynamic, object-oriented programming language best known as the language behind Ruby on Rails, the influential web framework that popularised convention-over-configuration and RESTful web applications. rbenv is the standard Ruby version manager for production servers — it allows installing and switching between multiple Ruby versions per user or per directory, without requiring root […]

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How to Install Certbot and Automate Let's Encrypt Renewals on RHEL 9 — step-by-step RHEL 9 tutorial on Progressive Robot

How to Install Certbot and Automate Let’s Encrypt Renewals on RHEL 9

Let’s Encrypt provides free, automated TLS certificates that are trusted by all major browsers. Certbot is the official ACME client that handles certificate issuance and renewal against the Let’s Encrypt CA. On RHEL 9, Certbot is available through the EPEL repository, making integration with Nginx and Apache straightforward. This tutorial walks through installing Certbot, obtaining […]

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How to Configure Nginx Server Blocks (Virtual Hosts) on Ubuntu 26.04 — step-by-step Linux tutorial on Progressive Robot

How to Configure Apache Virtual Hosts on Ubuntu 26.04

Apache virtual hosts allow a single Apache installation to serve multiple websites, each with its own configuration, document root, and domain name. This guide sets up an Apache virtual host on Ubuntu 26.04 LTS. Tested and valid on: Ubuntu 26.04 LTS Prerequisites Ubuntu 26.04 LTS server with Apache installed A domain name pointed to your […]

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How to Set Up Software RAID with mdadm on Ubuntu 26.04 — step-by-step Linux tutorial on Progressive Robot

How to Install Zabbix 7 on Ubuntu 26.04

Zabbix 7 is an enterprise-grade open-source monitoring solution that collects metrics from servers, network devices, cloud services, and applications. It supports SNMP, JMX, IPMI, and custom monitoring scripts. This guide installs Zabbix 7 on Ubuntu 26.04 LTS with MySQL and Nginx. Tested and valid on: Ubuntu 26.04 LTS Prerequisites Ubuntu 26.04 LTS with MySQL 9 […]

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How to Secure MySQL 9 on Ubuntu 26.04 — step-by-step Linux tutorial on Progressive Robot

How to Install phpMyAdmin on Ubuntu 26.04

phpMyAdmin is a browser-based MySQL and MariaDB administration tool. It provides a graphical interface for managing databases, running SQL queries, importing/exporting data, and managing users — all without the command line. This guide installs and secures phpMyAdmin on Ubuntu 26.04 LTS. Tested and valid on: Ubuntu 26.04 LTS Prerequisites Ubuntu 26.04 LTS with Apache and […]

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How to Configure Nginx Server Blocks (Virtual Hosts) on Ubuntu 26.04 — step-by-step Linux tutorial on Progressive Robot

How to Install Nginx on Ubuntu 26.04

Nginx is a high-performance web server and reverse proxy used by millions of websites worldwide. It handles static files efficiently, serves as a load balancer, and acts as a reverse proxy for application servers. This guide installs and verifies Nginx on Ubuntu 26.04 LTS. Tested and valid on: Ubuntu 26.04 LTS Prerequisites Ubuntu 26.04 LTS […]

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How to Set Up a Private Docker Registry on Ubuntu 26.04 — step-by-step Linux tutorial on Progressive Robot

How to Deploy Applications with Docker Compose on Ubuntu 26.04

Docker Compose simplifies multi-container application deployment using a declarative YAML file. This guide demonstrates deploying a full-stack web application (Nginx, Node.js API, MySQL, Redis) with Docker Compose on Ubuntu 26.04 LTS, covering real-world patterns like named volumes, custom networks, health checks, and environment variable management. Tested and valid on: Ubuntu 26.04 LTS Prerequisites Ubuntu 26.04 […]

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How to Set Up a Private Docker Registry on Ubuntu 26.04 — step-by-step Linux tutorial on Progressive Robot

How to Install Docker Compose on Ubuntu 26.04

Docker Compose is a tool for defining and running multi-container Docker applications using a single YAML configuration file. With one command you can start all services, networks, and volumes for your entire application stack. This guide installs Docker Compose on Ubuntu 26.04 LTS. Tested and valid on: Ubuntu 26.04 LTS Prerequisites Ubuntu 26.04 LTS with […]

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How to Configure PHP-FPM with Nginx on Ubuntu 26.04 — step-by-step Linux tutorial on Progressive Robot

How to Install and Configure Laravel 12 with Nginx on Ubuntu 26.04

Laravel 12 is the latest major release of the popular PHP framework, featuring a streamlined directory structure, improved performance, and modern PHP 8.4 syntax support. This guide installs Laravel 12 on a LEMP stack (Linux, Nginx, MySQL, PHP 8.4) on Ubuntu 26.04 LTS. Tested and valid on: Ubuntu 26.04 LTS Prerequisites Ubuntu 26.04 LTS with […]

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How to Set Up Two-Factor Authentication (2FA) for SSH on Ubuntu 26.04 — step-by-step Linux tutorial on Progressive Robot

How to Manage AppArmor Profiles on Ubuntu 26.04

AppArmor (Application Armor) is a Linux kernel security module that restricts program capabilities using per-program profiles. It is enabled by default on Ubuntu and provides Mandatory Access Control (MAC) to contain the blast radius of exploited applications. This guide manages AppArmor profiles on Ubuntu 26.04 LTS. Tested and valid on: Ubuntu 26.04 LTS Prerequisites Ubuntu […]

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