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How to Deploy a Ruby on Rails Application on RHEL 8 — step-by-step RHEL 8 tutorial on Progressive Robot

How to Deploy a Ruby on Rails Application on RHEL 8

Ruby on Rails is a full-stack web framework that prioritises convention over configuration, making it possible to stand up a production-ready application in minutes. Deploying Rails on RHEL 8 involves generating the application, running database migrations, serving it through the built-in Puma application server, and placing Nginx in front as a reverse proxy. This tutorial […]

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How to Configure AppArmor for Nginx on Debian 12 — step-by-step Debian 12 tutorial on Progressive Robot

How to Configure AppArmor for Nginx on Debian 12

Introduction Deploying configure apparmor for nginx on debian 12 on a Debian 12 Bookworm machine is straightforward thanks to Debian’s policy-compliant packaging. Unlike rpm-based distributions, Debian stores configuration helpers in /etc/default/, uses update-rc.d for older init scripts, and provides dpkg-reconfigure for interactive package configuration. This tutorial stays on the systemd path throughout. Prerequisites You will […]

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How to Set Up a Certificate Authority with OpenSSL on Debian 12 — step-by-step Debian 12 tutorial on Progressive Robot

How to Set Up a Certificate Authority with OpenSSL on Debian 12

Introduction How to Set Up a Certificate Authority with OpenSSL on Debian 12 is a fundamental operation for any administrator maintaining a Debian 12 Bookworm server. Debian 12 Bookworm ships with the Linux 6.12 kernel, updated toolchains, and a fully refreshed package archive — meaning version numbers, configuration file paths, and some dependency chains differ […]

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How to Install Ruby with rbenv on RHEL 8 — step-by-step RHEL 8 tutorial on Progressive Robot

How to Install Ruby with rbenv on RHEL 8

Ruby is a dynamic, expressive language used widely for web development, scripting, and automation. On RHEL 8, the system repositories may offer an older Ruby version that does not suit modern projects. rbenv solves this by letting you install and switch between multiple Ruby versions per user without touching system files. This tutorial walks you […]

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How to Configure GPG Key Management on Debian 12 — step-by-step Debian 12 tutorial on Progressive Robot

How to Configure GPG Key Management on Debian 12

Introduction Debian 12 Bookworm is built around the ethos of stability and free software. Setting up configure gpg key management on debian 12 on Bookworm leverages the same proven Debian packaging system that powers millions of servers worldwide, while benefiting from the latest upstream releases included in the Bookworm freeze. Follow each step carefully and […]

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How to Install Rust and Cargo on RHEL 8 — step-by-step RHEL 8 tutorial on Progressive Robot

How to Install Rust and Cargo on RHEL 8

Rust is a systems programming language focused on safety, speed, and concurrency. On RHEL 8, the recommended way to install Rust is through rustup, the official Rust toolchain installer, which lets you manage multiple Rust versions and cross-compilation targets from a single tool. This approach keeps your Rust installation self-contained under your home directory and […]

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How to Encrypt Disk Partitions with LUKS on Debian 12 — step-by-step Debian 12 tutorial on Progressive Robot

How to Encrypt Disk Partitions with LUKS on Debian 12

Introduction How to Encrypt Disk Partitions with LUKS on Debian 12 is a fundamental operation for any administrator maintaining a Debian 12 Bookworm server. Debian 12 Bookworm ships with the Linux 6.12 kernel, updated toolchains, and a fully refreshed package archive — meaning version numbers, configuration file paths, and some dependency chains differ from Debian […]

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How to Build and Deploy a Go Web Application on RHEL 8 — step-by-step RHEL 8 tutorial on Progressive Robot

How to Build and Deploy a Go Web Application on RHEL 8

Building a Go web application and getting it running in production are two different challenges. Go compiles to a single static binary that is trivial to deploy, but you still need a proper project structure, a way to manage runtime configuration securely, a systemd service for process supervision, and a reverse proxy to handle TLS […]

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How to Configure auditd System Auditing on Debian 12 — step-by-step Debian 12 tutorial on Progressive Robot

How to Configure auditd System Auditing on Debian 12

Introduction How to Configure auditd System Auditing on Debian 12 is a fundamental operation for any administrator maintaining a Debian 12 Bookworm server. Debian 12 Bookworm ships with the Linux 6.12 kernel, updated toolchains, and a fully refreshed package archive — meaning version numbers, configuration file paths, and some dependency chains differ from Debian 12. […]

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How to Install Go on RHEL 8 — step-by-step RHEL 8 tutorial on Progressive Robot

How to Install Go on RHEL 8

Go (also called Golang) is a statically typed, compiled language designed for simplicity and performance, making it an excellent choice for building web services, CLI tools, and DevOps utilities on Linux servers. Unlike interpreted runtimes, Go compiles to a single self-contained binary with no external dependencies, which simplifies deployment significantly. In this tutorial you will […]

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