https://zabolotny.de/en/notes/ Practical notes by Serge Zabolotny, fullstack & AI developer in Dresden: leaving the cloud with a home server – Proxmox, LXC containers, Nextcloud, Immich – plus access, Tailscale, Cloudflare Tunnel and backups. en Tue, 27 Oct 2026 08:00:00 GMT https://zabolotny.de/en/notes/backup-3-2-1-restore-test-homelab/ https://zabolotny.de/en/notes/backup-3-2-1-restore-test-homelab/ Tue, 27 Oct 2026 08:00:00 GMT Most backup stories end at the same point: the backup ran – but nobody ever tested whether it can be restored. Here is how I back up my Proxmox host and how I test the restore without endangering anything running. https://zabolotny.de/en/notes/cra-meldepflicht-11-september-2026/ https://zabolotny.de/en/notes/cra-meldepflicht-11-september-2026/ Tue, 27 Oct 2026 08:00:00 GMT Since 11 September 2026, manufacturers of products with digital elements must report actively exploited vulnerabilities – in three stages and on a fixed clock. What this means for development and DevOps teams. https://zabolotny.de/en/notes/ki-rechner-routinearbeit/ https://zabolotny.de/en/notes/ki-rechner-routinearbeit/ Tue, 27 Oct 2026 08:00:00 GMT The studies show very different numbers – from just under 3% to over 40%. Instead of a single number, the calculator gives three scenarios, each with its source, in hours and euros for your team. https://zabolotny.de/en/notes/ki-verordnung-artikel-50-checkliste/ https://zabolotny.de/en/notes/ki-verordnung-artikel-50-checkliste/ Tue, 27 Oct 2026 08:00:00 GMT Most of Article 50’s transparency duties have applied since 2 August 2026. For the machine-readable marking of generative AI already on the market, a transition period runs until 2 December 2026. A checklist for developers and operators. https://zabolotny.de/en/notes/nis2-kleine-it-unternehmen/ https://zabolotny.de/en/notes/nis2-kleine-it-unternehmen/ Tue, 27 Oct 2026 08:00:00 GMT The German NIS2 implementation act has been in force since 6 December 2025. Whether a company is directly affected depends on sector and size – but small firms feel it as suppliers too. https://zabolotny.de/en/notes/quereinstieg-devops-deutschland/ https://zabolotny.de/en/notes/quereinstieg-devops-deutschland/ Tue, 27 Oct 2026 08:00:00 GMT I am looking for a permanent IT job, with DevOps and platform engineering as the best fit. This is an open account of what the market offers according to the numbers, where I come from and how I make my skills verifiable. https://zabolotny.de/en/notes/welt-nach-der-4-industriellen-revolution/ https://zabolotny.de/en/notes/welt-nach-der-4-industriellen-revolution/ Tue, 27 Oct 2026 08:00:00 GMT Nobody knows what the world looks like after AI, robots and drones. What one can do: collect measured numbers, derive scenarios from them and ask what stays the same in all of them – from the view of someone working in IT and DevOps. https://zabolotny.de/en/notes/macos-verlassen-imac-2013/ https://zabolotny.de/en/notes/macos-verlassen-imac-2013/ Mon, 26 Oct 2026 08:00:00 GMT An iMac with 32 GB of RAM and a good display is not junk after twelve years. Why I switched to Windows and Linux anyway – a personal field report, not a benchmark. https://zabolotny.de/en/notes/homeserver-statt-cloud/ https://zabolotny.de/en/notes/homeserver-statt-cloud/ Sun, 25 Oct 2026 08:00:00 GMT At home I run a Proxmox server with 15+ services. Here is which cloud services it replaces for me, what it costs – in time – and where you are better off staying in the cloud. https://zabolotny.de/en/notes/homeserver-zugriff-backup/ https://zabolotny.de/en/notes/homeserver-zugriff-backup/ Sun, 25 Oct 2026 08:00:00 GMT A home server is only as good as its access and its backups. My principle: no port forwarding, every access path a conscious decision, a backup every day. https://zabolotny.de/en/notes/proxmox-lxc-aufteilung/ https://zabolotny.de/en/notes/proxmox-lxc-aufteilung/ Sun, 25 Oct 2026 08:00:00 GMT Four containers, four roles: how my home server is built, which programs run where and how I laid out the storage. https://zabolotny.de/en/notes/ci-cd-nextjs-vps/ https://zabolotny.de/en/notes/ci-cd-nextjs-vps/ Sun, 18 Oct 2026 08:00:00 GMT Manual deployments were slow and error-prone. Today a git push is enough – no downtime and no PaaS. https://zabolotny.de/en/notes/ki-content-human-in-the-loop/ https://zabolotny.de/en/notes/ki-content-human-in-the-loop/ Sun, 18 Oct 2026 08:00:00 GMT With care law, AI mistakes are not acceptable. This is how I use a language model as a writing aid without handing it the responsibility. https://zabolotny.de/en/notes/zero-trust-homelab/ https://zabolotny.de/en/notes/zero-trust-homelab/ Sun, 18 Oct 2026 08:00:00 GMT An internal dashboard was publicly reachable via a subdomain. Here is how I locked it down with Cloudflare Tunnel, Cloudflare Access and Tailscale.