My AMD GPU Has a New Job: Running llama.cpp Without Guessing What Fits
How I run llama.cpp on an AMD GPU with HIP, verified GGUF weights, a private API and measured context limits instead of optimistic VRAM maths.
Karl.Fail
Blog
Practical security research, self-hosting guides and lessons from Karl Machleidt’s homelab.
Ghostwire: Reading My Own WhatsApp Desktop Without Clicking Through It
How Ghostwire uses a native Windows WebView bridge for local exports and authenticated webhooks, with session, compatibility and queue limits.
I Gave My AI Agents Credentials. I Would Rather Not Give Them All of Them.
How I use self-hosted Infisical, machine identities and selected credential injection for AI tools, with reproducible examples and honest permission boundaries.
I Built a Search Setup That Gives My Local Model Something to Read
Vane, SearXNG and local inference: searchable sources, honest engine failures, document conversion and a reproducible way to check the answers.
Pre-Astro: How I Got My WordPress Cache Above 90%
The caching setup I used before Astro: anonymous HTML at Cloudflare, an origin page cache, Redis limits and tests for private-content bypass.
My Websites Have a Bouncer Now: OPNsense, NAXSI and a Very Particular Block Button
A technical tour of my OPNsense nginx reverse proxy, NAXSI policies, Elastic evidence and guarded n8n response, including tuning, tests and current limitations.
CitrixPot: My Low-Interaction NetScaler Honeypot and What Actually Hit It
Why I built a low-interaction NetScaler honeypot, how its capture-only stack works, and what real payloads and the private evidence console actually show.
I Took WordPress Off the Internet: Karl.Fail on Astro and Cloudflare Pages
How I moved Karl.Fail to Astro and Cloudflare Pages, kept WordPress private, and built automatic publishing, local search and a faster reading experience.
Ultimate Guide to Self-Hosted Dynamic DNS: Ditch DuckDNS for KarlDNS
Stop dealing with expiring hostnames and insecure API tokens. Learn how to deploy KarlDNS, a secure, account-free, self-hosted DynDNS using FastAPI, SQLite…
How I Built a Sub-Millisecond Threat Intelligence API for $0
How I built a free, sub-millisecond threat intelligence API using Node-RED to identify malicious IPs and domains. Stop paying vendors for open-source data.
The Great Karlflix Migration: Moving My Media Stack to a Proxmox LXC
Meta Description: Learn how I migrated my bloated Debian VM media stack to a sleek Proxmox LXC, enabling Jellyfin hardware transcoding, Gluetun WireGuard, and SSO.
Claude SysAdmin: An AI Guide for the Exceptionally Lazy
Too lazy for homelab chores? Learn how I used AI tools like Claude as my personal SysAdmin to automate Proxmox updates, fix WordPress, and refactor UniFi firewalls.
