June 10, 2026 · 11 min read · Infrastructure
My hypervisor sat at 40% iowait for days and survived every reboot. The SSDs were healthy, the RAID controller was healthy, memory was idle — and the real cause was a kernel I'd pinned during a major upgrade and never moved off. A walk from iostat through PSI to proxmox-boot-tool, and why a 2026 QEMU on a 2024 kernel manufactures phantom iowait.
ProxmoxKernelio_uringQEMUDebuggingHomelabInfrastructure
June 8, 2026 · 5 min read · Infrastructure
Caddy 2.11.4 landed on June 3rd — a security-heavy patch release with four hardening fixes and a pile of TLS and reverse-proxy bugfixes. Here's what changed, the one breaking caveat worth reading before you upgrade, and how I rebuild it as 47 ready-to-pull DNS-provider images for DNS-01 ACME.
CaddyDockerTLSDNSLet's EncryptSecurityHomelab
June 1, 2026 · 8 min read · Infrastructure
During COVID I bought three XPS 17s to game over Parsec. They were flawed — an iGPU memory leak that ate 128 GB of swap, a battery that drained while plugged in — and they're what pushed me to a Mac. Years later one of them, sitting idle on my desk, became prb-bld-01: a dedicated CI build node that cut a 40-minute build to 10. The throttle hunt, the battery cap, two runners on one box, and saving a consumer SSD from CI.
HomelabCI/CDGitLabGiteaDockerBuildKitInfrastructure
May 12, 2026 · 13 min read · Software
Chrome quietly rolled out Gemini Nano — a ~4 GB on-device LLM that downloads the first time any page calls the new `LanguageModel` API. Here's what it actually is, what it can't do, and what happened when I spent an evening building a search-and-fetch agent loop on top of a 3-billion-parameter quantized model.
LLMChromeGemini NanoAgentSearXNGWeb DevelopmentOn-Device AIConstrained Decoding
May 6, 2026 · 18 min read · Infrastructure
Finally putting two Tesla P4s to work — passing them through Proxmox to a small VM, running ollama, and exposing it to my apps via Cloudflare Tunnel with Bearer-token auth. What tiny models can do on hardware that's been collecting dust for years.
LLMOllamaProxmoxGPU PassthroughTesla P4HomelabInfrastructure