picokubelet

by cedi 1 month ago

macOS • • fish 35 views

picokubelet is a Kubernetes kubelet, written in Rust, targeting the ESP32-S3. It boots, gets a DHCP lease over Ethernet, talks TLS to a real k3s API server, registers itself as a node, and renews its lease so the control plane keeps believing it. As far as the cluster is concerned, it is a worker.

The hardware is a Waveshare ESP32-S3-ETH: an ESP32-S3R8 with a W5500 Ethernet controller on SPI, optionally PoE-powered. The control plane is a k3s instance on a Raspberry Pi. Nothing about that combination is unusual on its own; the unusual part is what’s at the other end of the SPI bus.

It exists because nobody had told the ESP32 it couldn’t.

https://asciinema.org/a/1004944

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