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Du.nkel.dev About This is a personal code notes blog. CC BY-SA 4.0 Alexander Dunkel [email protected] Keyboard Shortcuts Keys Action ?
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Dual Battery Automation in Home Assistant (Part 2)
This is part two of my Mastek Battery Automation project with Home Assistant. I added a second battery, improved parameter handling in the Home Assistant GUI and overhauled the automation & balancing script for (almost) zero grid export. It works better t
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A modern Proxmox Docker architecture with disposable VMs, VirtIO-FS, and ZFS
The Linux kernel's security model is constantly evolving. In 2026, my Docker-in-LXC nesting became increasingly fragile and needed a replacement. Here I describe a state of the art architecture for Proxmox. The post outlines deploying lightweight VMs via
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Lokale Einbindung und Steuerung vom Marstek Venus E Batteriespeicher mit Home Assistant
In diesem Beitrag beschreibe ich die Integration eines günstigen (1050€) 5kWh AC-Speichers in eine bestehende 30kWp PV-Anlage mit Open-Source tools. Das Ziel: Null Cloud-Abhängigkeit und volle lokale Kontrolle mittels Modbus TCP und Nulleinspeisungs-Autom
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Local-only Marstek Venus E Battery Integration with Home Assistant
Integrating a cheap (1050€) 5kWh AC-coupled battery into an existing 30kWp PV system. The goal: Zero-cloud dependency, full local control via Modbus TCP, and a 'Zero Export' regulation loop using Home Assistant. This post covers the physical installation
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Automating rootless Docker host updates with Ansible
Running apt upgrade on hosts with rootless Docker services can break them. A version mismatch occurs between the running user daemon and the newly upgraded system binaries, causing containers to fail on restart. This post provides an ansible playbook that
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