Elwin Ehlers
Linux Sysadmin · Windows Admin (MCSA 2012) · Self-hosted Infrastructure
About
Linux system administrator with a focus on self-hosted infrastructure, containerization, and network security. I run a Proxmox home lab with multiple VMs and Docker stacks, covering DNS filtering, reverse proxies, SIEM monitoring, NAS storage, and more. On the Windows side I hold an MCSA 2012 certification and have experience with Active Directory, Group Policy, and Windows Server administration. I value clean setups, good documentation, and understanding what’s actually happening under the hood.
Skills
Operating Systems Linux (Ubuntu, Debian), Windows Server (MCSA 2012), Windows 11, Proxmox VE, Hyper-V
Containerization Docker, Docker Compose, Portainer
Networking Active Directory, DNS, DHCP, TCP/IP, Pi-hole, Nginx Proxy Manager, Fritz!Box, Netzwerksicherheit
Security & Monitoring Wazuh, Backup-Strategien, Datenschutz, Log-Monitoring, System Hardening
Storage TrueNAS, ZFS
Applications & Tools Paperless-ngx, RustDesk, Organizr, Remedy, Zammad, GitHub, Claude Code
Projects
docker-Portainer-yml
Ready-to-use docker-compose.yml files for self-hosted home lab services.
Includes a setup guide for Docker and Portainer on Debian.
Covers services like Stirling-PDF, Nginx Proxy Manager, and more.
dokubase
A self-hosted, browser-based knowledge dokubase for local HTML and PDF files. Runs as a Docker container in the home network — drag & drop upload, category navigation, tab-based document view, real-time search. Built with nginx, Flask, and Material Design 3. No cloud, no external dependencies.
pi
Step-by-step setup guide for the Pi Coding Agent on Windows 11 with a local Ollama model.
Includes a self-built browser GUI (pi-launcher) to manage prompts, control Ollama, and switch models — single HTML file, no framework, no CDN, Python stdlib only for the backend.