Posts

How I use self-hosted Whisper for Open WebUI dictation, voice calls and long recordings, what everyday use broke, what I changed and what is still unexplained.

How I test Whisper speech-to-text accuracy in four languages with FLEURS, Common Voice and word error rate (WER), and why my gates rejected all three changes.

How I build and release Intel GPU speech-to-text containers with OpenVINO, GitLab CI and Harbor, then verify the tested digest is running in Kubernetes.

I moved Whisper from a CPU-hungry service to idle Intel iGPUs. OpenVINO made it useful; passthrough, warmup, queueing and routing made it operable; repaired speed comparisons showed the real gain.

Running a 96 GB RTX PRO 6000 Blackwell Max-Q on Proxmox and K3s: PCIe topology, VFIO, NVIDIA drivers, vLLM and real onboarding failures.

Two years with four identical fanless mini-PC Proxmox nodes: the thermal pad saga, a 35 W power contract, Thunderbolt as a PCIe slot, and why the optics I wanted turned out to be a DAC.

Why a 990 PRO reports 7% wear after 8 TB written, why fwupd cannot help, and how to flash Samsung’s firmware ISO from a running Linux system.

How a homelab SRE agent uses HolmesGPT, Grafana MCP, Qdrant, and a local LLM for bounded Kubernetes triage without cluster write access.

A practical operating model for a single 24 GB GPU in k3s: one active LLM workload, explicit scheduling rules, preflight-gated model switches, and measured Qwen3.6 performance

Moje osobiste wrażenia po państwowym egzaminie B2 z języka polskiego

How to use PVE to run Windows desktops with GPU passthrough

Kubestronaut: requirements, onboarding, and verification

Certified Kubernetes Security Specialist (CKS)

Certified Cloud Native Platform Engineering Associate (CNPA)

Certified Argo Project Associate (CAPA)

Linux Foundation Certified System Administrator (LFCS)

Certified GitOps Associate (CGOA)

Kubernetes and Cloud Native Security Associate (KCSA)

A practical benchmark of Ansible with Mitogen, covering integration steps, real speed gains, and production tradeoffs.

Certified Kubernetes Administrator (CKA) recertified

Certified Kubernetes Application Developer (CKAD) recertified

An Ansible-managed homelab DNS chain: dnsdist load-balancing seven Pi-hole containers into BIND 9 and Unbound over authenticated DNS-over-TLS, with measurements and the test that lied

Why I broke up with Pipenv for a faster, saner Python toolchain and a CI-agnostic task runner.

managing Proxmox firewall rules in a separate Terraform project

Krótki przewodnik po egzaminie państwowym B1: zapisy, przygotowanie i przebieg

127.0.0.1 is not always available ^_^

Kubernetes and Cloud Native Associate (KCNA)

runbook for upgrading Debian Bookworm to Debian 13 Trixie on Proxmox VE

Finally found a clean and reliable way to automate Sonar Repos using Terraform. Works great

Running Proxmox on systems with onboard Intel NICs using the e1000e driver can lead to severe stability issues

filtering reachable hosts ( linux + net )

Fix black screen and kvm: VFIO_MAP_DMA failed: Invalid argument during Radeon RX 7900 XTX GPU passthrough on Proxmox VE: explicit vBIOS romfile, rombar=0, and a working Windows gaming VM

Trick to fix /system/reboot is not working

I got tired of debugging container connections with tools that weren’t built for it. So I wrote a minimal, configurable microservice template.

cleanup with CI improvements

integrating already-mounted storage disks with PBS

A guide to formatting NVMe drives with 4K sectors to improve storage speed and reliability

How I built a React Native CI/CD pattern with CircleCI, Fastlane, Firebase App Distribution, app-store releases, and white-label app reuse.

Script for updating SW and HW

Эксперименты с установкой Arch Linux: полное шифрование, LVM внутри LUKS и UEFI.

Нестандартный способ установки Proxmox через Ansible роль на чистый Debian

Готовое решение для автоматического бэкапа конфигураций Mikrotik (бинарный + экспорт)