Hardening a $0 Kubernetes Cluster: An SRE Field Guide

A few weeks ago I wrote about building a $0/month enterprise platform on Oracle’s free ARM tier. Twenty-one pods, service mesh, secrets management, AI observability — the whole works, running on a single ARM instance with 24GB of RAM. It worked. Everything was up. The pods were green. I could hit my apps through Traefik and feel smug about paying nothing. But here’s the thing about infrastructure: running is the easy part. The hard part is knowing whether it’s running well — and whether it’ll keep running when something goes sideways at 3 AM. ...

February 9, 2026 · 33 min · jcaldwell-labs

Rethinking the Terminal: Spatial Navigation in a Linear World

The terminal is linear. Commands scroll up. Output disappears. Information exists only in the moment. But what if it didn’t have to be this way? The Problem with Traditional Terminals I spend most of my day in a terminal. SSH sessions, log tailing, git operations, monitoring scripts. The workflow is always the same: run a command, read the output, run another command. Previous context scrolls away into oblivion. To cope, we invented tools: ...

February 4, 2026 · 8 min · jcaldwell-labs