Networking

How to Install Composer on Debian 13 — step-by-step Debian 13 tutorial on Progressive Robot

How to Install Composer on Debian 13

Introduction Deploying install composer on a Debian 13 Trixie 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 Before you begin, ensure you have a […]

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How to Configure PHP-FPM with Nginx on Debian 13 — step-by-step Debian 13 tutorial on Progressive Robot

How to Configure PHP-FPM with Nginx on Debian 13

Introduction Deploying configure php-fpm with nginx on a Debian 13 Trixie 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 Ensure Debian 13 Trixie is […]

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How to Install PHP 8.3 on Debian 13 — step-by-step Debian 13 tutorial on Progressive Robot

How to Install PHP 8.3 on Debian 13

Introduction How to Install PHP 8.3 on Debian 13 is a fundamental operation for any administrator maintaining a Debian 13 Trixie server. Debian 13 Trixie 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. This […]

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How to Deploy a .NET Application on RHEL 9 — step-by-step RHEL 9 tutorial on Progressive Robot

How to Deploy a .NET Application on RHEL 9

.NET 8 is the current Long-Term Support release of Microsoft’s open-source runtime and is fully supported on RHEL 9 through Microsoft’s official package repository. ASP.NET Core applications run as self-contained processes, which makes them easy to containerise or proxy behind Nginx for production workloads. This tutorial walks through adding the Microsoft repository, installing the .NET […]

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How to Install Gradle on Debian 13 — step-by-step Debian 13 tutorial on Progressive Robot

How to Install Gradle on Debian 13

Introduction Debian 13 Trixie is built around the ethos of stability and free software. Setting up install gradle on Trixie leverages the same proven Debian packaging system that powers millions of servers worldwide, while benefiting from the latest upstream releases included in the Trixie freeze. Follow each step carefully and the resulting configuration will persist […]

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How to Install Java and Configure JAVA_HOME on RHEL 9 — step-by-step RHEL 9 tutorial on Progressive Robot

How to Install Java and Configure JAVA_HOME on RHEL 9

Java 21 is a Long-Term Support release that brings virtual threads, record classes, and pattern matching to the platform, making it the recommended JDK for new enterprise workloads on RHEL 9. Red Hat ships OpenJDK 21 through the standard dnf repositories, so installation is straightforward and kept in sync with security advisories. This tutorial covers […]

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How to Switch Default Java with update-alternatives on Debian 13 — step-by-step Debian 13 tutorial on Progressive Robot

How to Switch Default Java with update-alternatives on Debian 13

Introduction This guide explains how to Switch Default Java with update-alternatives on Debian 13 on Debian 13 Trixie. Debian Trixie uses systemd for service management, nftables as the underlying packet filter (with ufw or iptables front-ends still available), and AppArmor for mandatory access control. Every command is designed for a minimal Debian 13 install with […]

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How to Install Java OpenJDK 17 on Debian 13 — step-by-step Debian 13 tutorial on Progressive Robot

How to Install Java OpenJDK 17 on Debian 13

Introduction This guide explains how to Install Java OpenJDK 17 on Debian 13 on Debian 13 Trixie. Debian Trixie uses systemd for service management, nftables as the underlying packet filter (with ufw or iptables front-ends still available), and AppArmor for mandatory access control. Every command is designed for a minimal Debian 13 install with the […]

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How to Install Go and Build CLI Tools on RHEL 9 — step-by-step RHEL 9 tutorial on Progressive Robot

How to Install Go and Build CLI Tools on RHEL 9

Go is a statically typed, compiled language from Google that excels at building fast, reliable command-line tools and network services. On RHEL 9, the system repositories may not carry the latest Go release, so installing from the official tarball is the recommended approach. This tutorial walks through downloading Go 1.22+, configuring the environment system-wide, and […]

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How to Set Up a Load-Balanced PostgreSQL Cluster with Patroni on RHEL 9 — step-by-step RHEL 9 tutorial on Progressive Robot

How to Set Up a Load-Balanced PostgreSQL Cluster with Patroni on RHEL 9

PostgreSQL does not include built-in primary election or automatic failover — that is where Patroni comes in. Patroni is a Python-based template for HA PostgreSQL using a distributed configuration store (DCS) such as etcd to coordinate which node is the primary at any given time. When the primary fails, Patroni automatically elects a new primary […]

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