Troubleshooting Log

Problems I've solved

A running log of issues I've debugged while building and running real systems. Each entry documents the problem, the investigation, and the fix — including code where it can be safely shared.

2026-10-19 20:00 UTC

An orchestration node aborted after exactly 300 seconds — and it wasn't the timeout at all

Problem A self-hosted n8n workflow that fan-outs to a local Ollama model kept failing. The step that asks the model to write content — an HTTP node pointe…
n8nollamaautomationlocal-llm
2026-09-22 15:10 UTC

An inference container kept reporting unhealthy while its API returned 200 to everything else

Problem docker compose up --wait kept failing: the hardened Ollama container started fine but stayed unhealthy, so the health gate never opened and the launcher r…
dockerhealthcheckcontainers
2026-09-22 15:00 UTC

Docker silently disabled port publishing on an internal network — the API was configured but didn't exist

Problem Hardening an inference stack, I put the model server on an internal: true bridge (no egress) and published the API as 127.0.0.1:11435:11434 so the host co…
dockernetworkingsecurity
2026-09-04 14:15 UTC

Docker containers couldn't reach a host service — and FORWARD rules didn't help

Problem A Docker container couldn't reach Ollama on the host at 100.86.150.70:11434 — connections timed out. The host itself reached Ollama fine on every interface, and the co…
dockernetworkingfirewallufw
2026-09-04 14:00 UTC

Illegal instruction crash from a native vector DB module on an old Xeon

Problem AnythingLLM's backend crashed with Illegal instruction (core dumped) every time a document was embedded. The container restarted cleanly and served API calls fine — th…
dockervectordbhardwareanythingllm
2026-09-03 12:20 UTC

Rolling out ponytail + superpowers across the lab

Problem The laptop had ponytail (a lazy-coding ruleset) and superpowers (a skill library) installed as opencode plugins. Forge and Curly — the two remote lab nodes — had bare opencode inst…
opencodetoolingautomation
2026-09-03 12:10 UTC

Cutting 200+ lines of dead code without breaking anything

Problem Three Python projects had accumulated duplicated helpers, dead stub functions, and repeated error-handling boilerplate. The code worked, but it was harder to maintain than it neede…
pythonrefactoringmaintenance
2026-08-31 18:35 UTC

WireGuard full-tunnel hijacking the default route

Problem Setting AllowedIPs = 0.0.0.0/0 on a WireGuard client silently hijacked the default route and killed Tailscale connectivity. Investigation When a WireG…
networkingwireguard

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docker networking security healthcheck containers firewall ufw vectordb hardware anythingllm opencode tooling automation wireguard python refactoring maintenance