Ian L. Paterson
Practitioner notes on AI agents, cybersecurity, and building public companies in Canada.
Ian’s personal blog.
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Linux OOM Killer vs SSH: How to Stop Getting Locked Out of Your Own Server
When the Linux OOM killer fires, ‘sshd is running’ stops meaning ‘you can log in.’ Four systemd and sysctl fixes that keep your login path alive through a memory storm.
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I Strapped a $15 Sensor to My GPU. It Read the Load Backwards. Here’s How to Calibrate It.
A $15 Zigbee sensor on an open-air GPU reads load backwards in the fan airflow. An LLM falls for the same trick. Calibrate against nvidia-smi to fix both.
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My brand-new SLZB-07 Zigbee coordinator shipped too old: fixing “EZSP protocol version 12 is not supported by host”
The SMLIGHT SLZB-07 connected, spoke the right protocol, then quit: EZSP version 12 not supported. Here’s the flash fix and how to pick the right channel.
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Why docker image prune Won’t Fix a Full Root Disk: The Containerd Snapshotter Trap
docker image prune skips tagged images, and the real hog hides in /var/lib/containerd. How I traced a 99% root disk to the containerd snapshotter and fixed it.
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Self-Hosting RustDesk on Tailscale Without Opening a Single Public Port
Run rustdesk-server-oss behind Tailscale with zero public ports, plus the macOS root-daemon config fight that ate an hour and nobody has documented.
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Why Your llama.cpp Benchmarks Are Wrong: GPU Architecture and Real Numbers
I pulled an aging Quadro out of my homelab LLM box, dropped in an RTX 2060 SUPER, and the thing booted on the first try. The driver saw both cards.…
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I Built a Honeypot to Catch Prompt Injections in Claude Code (Here’s What It Caught)
I built a honeypot canary that screens web content with a deliberately gullible LLM before my AI agent reads it. Here is what it caught.
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Free LLM API Tiers in 2026: What Groq, Cerebras, Mistral, Gemini and Cohere Actually Give You
On May 31, 2026, one of my LLM providers quietly deleted most of its free models, including the exact one my code was calling. My code didn’t change. The vendor’s…
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Three Green Lies: Debugging a Self-Hosted LLM Observability Dashboard
Within a week of standing up the dashboard, three panels were showing bad data. None of them was a Grafana bug. I had built a Grafana dashboard to watch my…
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How I Drive WordPress From Claude Code (REST, Playwright, wp-cli)
Driving WordPress from Claude Code (Anthropic’s terminal coding agent) fights the platform’s core assumption roughly every other operation. WordPress was built for humans clicking buttons. Last week I burned 90…