Lessons from running K3s in RPI using Ansible and Flux

Running K3s on a Raspberry Pi sounds simple, until you try to make a rebuild repeatable: bootstrap the node, get Flux access to Git, and recreate credentials without committing plaintext secrets. I learned a bunch of things the hard way, and I hope writing them down saves the next person (or GenAI model) some of the same back-and-forth. The pattern that worked was a clean hand-off: Ansible prepares the host and the bootstrap prerequisites; Flux takes over once it can read the GitOps repo.