FIELD NOTES FROM THE RACK

Useful failures. Honest fixes. ⚡

Real incidents from servers, networks, automation, security, and the gloriously unreliable technology we grew up with.

The Phantom Bad Blocks: How a 15-Year-Old Linux Bug Took Down 75 Security Cameras

A field report on diagnosing and repairing a RAID failure that wasn’t a hardware failure at all — and why ‘replace the disk’ would have made it far worse.

June 11, 2026 · 8 min · 1555 words · Justin

The Alert That Went to Nobody

A critical event fired a perfectly good alert into a receiver wired to absolutely no one — and everybody slept fine because of it.

June 9, 2026 · 4 min · 818 words · Justin

The TLS Cert Only an API Could Renew

A FreePBX user panel served an expired TLS cert, every reload swore it was fixed, and the only thing that actually moved the needle was calling the cert module’s own regeneration API.

June 9, 2026 · 4 min · 772 words · Justin

When Postgres Won't Start

A database stuck forever on ‘starting up’ wasn’t broken — it was clawing its way through WAL replay on a dying disk.

June 8, 2026 · 5 min · 860 words · Justin

The Sensor That Cried Wolf

A loud-sound detector paged us all night for slamming doors — because it measured volume, not meaning.

June 7, 2026 · 5 min · 857 words · Justin

Why Your Fitness Tracker's Correlations Are Lying to You

I built a dashboard that confidently told me walking ruins my sleep — then I learned what a confounder is.

June 6, 2026 · 5 min · 883 words · Justin

The App That Wouldn't Open After an Update

A desktop app auto-updated, swallowed its own window, and hung forever — and the fix had nothing to do with the install.

June 5, 2026 · 4 min · 768 words · Justin

Teaching a Computer to Mute the Sounds I Hate

I tried to delete a sound from my life with a volume threshold. The sound was never loud — it was a fingerprint, and I had to teach a machine to read it.

June 4, 2026 · 5 min · 904 words · Justin

I Found My Own Server on Shodan

I scanned my own infrastructure like an attacker would — and found an admin panel wide open that my firewall swore was closed.

June 3, 2026 · 4 min · 767 words · Justin

Seven Network Gotchas That Look Like Ghosts

The network isn’t haunted — it’s orphaned ports, stale DNS, and a firewall eating your return path. Run the checklist before you light the candles.

June 2, 2026 · 4 min · 787 words · Justin