Alexander Holbreich

The config files, shell commands, manuals, and source code that frustrated normal users may be exactly the handles AI agents need.

Why I replaced a reliable Fedora workstation with Omarchy Quattro, and why its agent-ready Linux desktop feels timely.

Claude Code, Codex, OpenCode - great places to start, not best places to finish.

I built a Git-native task ledger to coordinate work between myself and AI agents.

A personal note on my first real weeks with coding agents: OpenClaw, Codex, Claude Code, Pi, too many tokens, and a surprising amount of shipped code.

Introduction to JSON Web Tokens for beginners, with Java examples and microservice architecture context

Small shell helpers for giving Claude, Codex, Gemini, Pi and human roles distinct BEADS_ACTOR names.

Practical GRUB, Fedora BLS, kernel arguments and UEFI boot notes I keep forgetting.

My notes on using Beads/bd as an issue tracker for AI-assisted coding

Reflections on using Telepresence (v2) to bridge the gap between local development and Kubernetes clusters.

Notes on migrating the old Hugo article archive into this Astro blog together with Codex, with bd as the task tracker and guardrail.

Composable Architecture, DXP, Headless CMS, API-first, MACH, and Cloud Native as parts of a modern architectural strategy.

Practical notes on when JWT access tokens make sense, how to validate them, and when opaque tokens are the simpler architecture.

Architecture Decision Records (ADRs) are lightweight documents that capture architectural decisions along with their context and consequences.

Some HW notes

Step by Step Fedora Linux Upgrading Guide

An introduction to JDK 21 virtual threads and practicals examples

Description of a typical journey towards the GitOps with Flux

How I switched from Ghost Blog to Hugo and how you can do it too.

How to set up AWS EKS Kubernetes cluster with Terraform, by DevOps expert

Listing of Kube-state-metrics with comments.

Fedora Linux upgrading guide: Step by Step

Setup of Filebeat on a Kubernetes cluster for logs scraping

Setuping Logstash on a Kubernetes cluster - The L in the ELK stack

Elasticsearch Open Distro on AWS vs Elasticsearch from Elastic

Terraforming of the AWS: Getting started set up AWS cloud Resource with terraform

Listing and details to services in Linux Systemd

Docker components explained: DockerD, Containerd, runC, containerd-ctr, containerd-shim

Elasticsearch: Explaining clustering and indices

Review of the Elasticsearch's internal data structures.

Elasticsearch cluster configuration: Best practices

Installing Kubernetes on Ubuntu Linux: Set by Step Guide for entry level

Elasticsearch introduction and review

Jenkins installation and configuration with Docker

Upgrading debian Jessie to Stretch: Best practices

What is Docker and what is Docker Moby

How to setup cloud resources in the Google Cloud with terraform

Terraforming of the AWS cloud: Side notes

Review of AWS Cloud automation tools: Terraform, Ansible & Cloudformation

The Serverless Compute Manifesto: The Details

Kubernetes installation with CoreOS Nodes on the AWS Cloud

List of Container Management Systems in 2016

A Review of AWS for Docker containers in 2016.

Article exploring the concept of modularity in software system design and shows how it enable your organisation to be more agile

Writing own Ansible role for maven

Golang.

Introduction to Ansible DevOps tool

Cryptographic Message Authentication explained in details.

Symmetric Cryptography explained in details.

Cryptography basics explain.