In a microservices environment, services need a reliable way to discover each other without hardcoded IP addresses. HashiCorp Consul solves this with a distributed key-value store, a DNS interface, and an HTTP API that services query to locate healthy peers. On RHEL 9, Consul runs as a systemd service and integrates cleanly with firewalld. This […]
Network Quality of Service (QoS) lets you control how bandwidth is distributed across different types of traffic, ensuring that latency-sensitive applications like VoIP or interactive SSH sessions remain responsive even when bulk transfers saturate the link. The Linux tc (traffic control) subsystem implements this through a combination of queuing disciplines, classes, and packet filters. This […]
Introduction This guide explains how to Install Node.js 22 LTS 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 […]
Podman pods mirror the Kubernetes pod concept — a group of containers that share the same network namespace, IPC namespace, and optionally storage volumes. This makes it straightforward to move workloads between a local RHEL 9 machine and a Kubernetes cluster with minimal changes. In this tutorial you will create a pod containing an Nginx […]
Introduction This guide explains how to Use Python Virtual Environments 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 […]
IPsec VPNs provide strong, standards-based encryption and are natively supported by Windows, macOS, and iOS without additional client software. StrongSwan is a full-featured IKEv2/IPsec implementation that runs well on RHEL 9. This tutorial walks you through installing StrongSwan, generating a PKI certificate chain, and configuring an IKEv2 VPN server that accepts connections from native OS […]
Introduction How to Manage Python Versions with pyenv 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 […]
Introduction Debian 13 Trixie is built around the ethos of stability and free software. Setting up configure database backups with automysqlbackup 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 […]
Introduction Debian 13 Trixie is built around the ethos of stability and free software. Setting up install sqlite3 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 […]
Introduction This guide explains how to Use pgAdmin 4 to Manage PostgreSQL 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 […]
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