01🗼The Watchtower
0/4 lessonsWhat a fleet control plane is, why it watches the machines themselves, and who holds the pen.
Before any schema, the orientation. Watchfire is a fleet control plane — one host that keeps watch over a small group of Macs and holds the durable record of what they should be. This track frames the problem a control plane solves (machines drift, and a spreadsheet won't save you), draws the line between managing the machines themselves and the apps that run on them, explains why exactly one host holds the pen, and why a control plane earns the right to change anything by first proving it can only look.
Lesson list (4)
- 01Why a Watchtower~9 min · control-plane, fleet, drift, build-vs-rent
- 02The Machines, Not Just the Apps~9 min · scope, machines-not-apps, observability, layers
- 03One Host Holds the Pen~10 min · single-writer, authority, split-brain, source-of-truth
- 04Earn the Right to Change Things~10 min · read-only-first, mutation-disabled, agentless, least-privilege