Alexander Schneider — System Integration · Linux, Networking, DevOps, Security
Selected Systems — repositories worth a second look
Engineer ID — Alexander Schneider, Infrastructure Access
System
Focus
Stack
homelab Infrastruktur-Specs und Runbooks, bevor auf den Maschinen etwas passiert
Markdown HTML Tailscale Prometheus
agora Self-hosted GraphRAG-Pipeline mit Persona-Agenten, ohne Cloud-API
Python Neo4j Ollama Vue 3 Docker
harness-qwen Lokales Agent-Harness mit deterministischer Tool-Absicherung
Python Local LLM
Chappe Signal-Backups durchsuchbar machen — offline, ohne Abhängigkeiten
Python SQLite FTS5
skills-public-archive Öffentliches Archiv lokaler Agent-Skills mit Ordner- und ZIP-Export
Python Automation
alexle135.de Portfolio- und Blogplattform hinter alexle135.de , SSR auf eigenem Server
TypeScript Astro Node 22
Kuratiert nach Infrastruktur, Automatisierung und Selfhosting — nicht nach Sternen.
Alle weiteren Repositories: github.com/arn0ld87?tab=repositories
Toolchain — what actually runs on the machines I maintain
INFRASTRUCTURE
Linux, Ubuntu, Debian, Docker, Cloudflare, Raspberry Pi
Proxmox
LXC
Tailscale
Self-Hosting
VPS
NETWORKING
TCP/IP
VLAN
Routing
DNS
DHCP
VPN
Firewalls
AUTOMATION & DEVOPS
Git, GitHub, GitHub Actions, Bash, Python, VS Code
CI/CD
Docker Compose
Runbooks
Shell Scripting
WEB & SERVICES
Nginx, Node.js, PHP, PostgreSQL, TypeScript, Astro
Apache
Reverse Proxy
TLS
AI / EXPERIMENTAL
Ollama
Neo4j
Local LLMs
MCP
AI Agents
GraphRAG
Engineering Principles — the rules that survive every refactor
01 Automate repetitive work · 02 Prefer reproducible infrastructure · 03 Harden before exposing · 04 Observe before guessing · 05 CLI first, GUI when useful · 06 Backups are real after restore testing
Current Operations — what has my attention right now
Linux Hardening, CI/CD, Container Best Practices, Network Engineering, Secure API Integration, AI Infrastructure, Automation
Telemetry — activity, languages and contribution stream
Establish Connection — website, repositories, profile
