jakman85andClaude Opus 4.8 3a59ef1918 fix(kubevirt): boot VMs via CDI DataVolume + EFI + real KVM (Phase 5)
VMs did not boot on the dev cluster. Three distinct live-verified causes,
all fixed GitOps-side:

1. containerDisk root failed at OCI init:
   exec "/container-disk-binary/usr/bin/container-disk": no such file.
   KubeVirt v1.9 supplies that binary to the volumerootdisk init container
   via a k8s-native `image` volume (VolumeSource.Image), gated by the ALPHA
   `ImageVolume` feature gate. k3s v1.31 has it DISABLED, so the apiserver
   silently prunes the image volume + its mount -> binary missing -> crash.
   (Proved: a server-side dry-run of a pod with an `image` volume drops it.)
   Fix: convert the VM roots in all three tests to CDI DataVolumes imported
   onto Longhorn PVCs (mounted disks bypass the container-disk/image-volume
   path). This is also the spec-required disk model (docs/06, R-STATE-01).
   vm-lifecycle now PASSES green live (VMI Running on start + restart).

2. Guest dropped to emergency mode: the containerdisks/fedora:41 image is
   UEFI-native (ESP + /boot mounted via systemd GPT auto-discovery); under
   KubeVirt's SeaBIOS default the ESP+/boot by-uuid mounts time out ->
   local-fs.target fails -> cloud-init runcmd/poweroff never runs.
   Fix: boot the VMs with EFI (OVMF, secureBoot:false) in all three tests
   and fixtures/vm.yaml. Confirmed live: emergency mode gone with EFI.

3. VMs ran under TCG software emulation (guests ~10x slow, saturating nodes
   until one went NotReady and VMs were evicted). Cause: useEmulation:true
   in the KubeVirt CR makes virt-controller NOT request devices.kubevirt.io/
   kvm, so /dev/kvm is never mounted and qemu falls back to TCG even though
   all nodes advertise kvm=1k / hypervisor=true. (Proved: `ls /dev/kvm` in a
   virt-launcher compute container = "No such file"; qemu accel = tcg.)
   Fix: useEmulation:false so the kvm device is requested and VMs run on real
   (nested) KVM. Requires Flux reconcile to take effect live (PM action).

The virt-handler clientcertificates tls.crt error is UNRELATED: node-labeller
(294 labels, hypervisor=true), device plugins, and VMI scheduling all work.

Also raised test exec timeouts to 30m (CDI import + boot) and, in
vm-default-deny, import the root BEFORE applying the default-deny NetworkPolicy
so the CDI importer's egress to quay.io is not severed by the policy.

Co-Authored-By: Claude Opus 4.8 <[email protected]>
2026-08-24 23:07:10 -05:00

home-network-k3s-impl

Implementation of the home k3s + Longhorn platform. This repo holds the reconciled artifacts (Flux config, Kustomize overlays, KubeVirt/Helm manifests, ServiceDefinitions, Kyverno policies, Chainsaw conformance tests, CI). It is driven by — and subordinate to — the read-only specification at ../home-network-k3s.

Rules (from the spec — non-negotiable)

  • The spec is read-only. Never modify anything under ../home-network-k3s. Implement against it; escalate spec problems, don't edit them (spec AGENTS.md §11, R-TEST-06).
  • Done = a green, reproducible, requirement-tagged conformance test — never "merged," never a manual demo (spec docs/14, agents/definition-of-done.md).
  • No work on main. Every change is a feature branch merged into main (spec CONTRIBUTING.md).
  • No plaintext secrets — SOPS-encrypted only (spec docs/07).
  • Phase discipline — only build what the active roadmap phase authorizes (spec roadmap/phases.md).

Layout

platform/     platform services (Flux HelmReleases/Kustomizations): cilium, longhorn,
              cert-manager, externaldns, gateway, monitoring, velero, kubevirt,
              image-automation, keycloak, oauth2-proxy, kyverno/
apps/         application workloads, one dir per catalog service
catalog/      ServiceDefinition entries (the onboarding surface)
schemas/      ServiceDefinition JSON Schema + renderer contract
clusters/     Flux entrypoints + dev/ and prod/ overlays
conformance/  Chainsaw behavior/conformance suite + harness + coverage report
.gitea/       Gitea Actions CI (lint · schema · Kyverno L0 · Chainsaw trigger · merge gate)

Current phase: Phase 0 — Foundations (repo, CI, ServiceDefinition schema, conformance harness, Kyverno L0 gate). No cluster exists yet; Phase 1 (cluster bring-up) is not authorized.

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