A Conn3x circuit for single-node MicroShift on Rocky Linux 10

[jamesconwaydev]

Hi. Sharing in case it's useful to people trying MicroShift outside RHEL: https://github.com/conn3xorg/circuit-microshift sets up a single-node MicroShift on Rocky Linux 10 with one conn3x apply. Conn3x is a fork of OpenTofu that configures hosts over SSH, so the VM and the cluster can live in one configuration.

To be clear about what it is: it installs the microshift-io community build (4.20.0, on OKD), not Red Hat's product, and it says so in the README. It pins every unsigned package by SHA-256 rather than turning off GPG checks, and it's only been tested by hand on Rocky Linux 10, x86_64, with SELinux enforcing.

The part that took longest: on a cloud image with only kernel-modules-core, the pod network never came up, because kube-proxy needs xt_conntrack and xt_comment from kernel-modules-extra. Mentioning it in case someone else hits the same wall.

Feedback welcome, especially from anyone who knows where this differs from how MicroShift expects to be installed.