Files
home-network-k3s-impl/platform/kubevirt
jakman85andClaude Opus 4.8 3586769460 feat(storage): CSI snapshots + smart-clone + migratable RWX for KubeVirt live-migration
Adds the VM/CDI storage tier approved by the PM (RWX for live-migration):

- platform/external-snapshotter (NEW, controllers pass): the cluster-singleton
  snapshot.storage.k8s.io control plane (CRDs + snapshot-controller in
  kube-system), pinned v8.2.0 (Kubernetes deps aligned to 1.31 since v8.1.0;
  this cluster is k3s v1.31.5). These CRDs were absent — only snapshots.longhorn.io
  and kubevirt.io snapshot CRDs existed.
- platform/longhorn/volumesnapshotclass.yaml (NEW, platform-config): the
  driver.longhorn.io VolumeSnapshotClass (type: snap, in-cluster).
- platform/kubevirt/cdi-storageprofiles.yaml (NEW, platform-config): StorageProfile
  longhorn -> cloneStrategy: snapshot; StorageProfile longhorn-vm -> snapshot clone
  + claimPropertySets RWX/Block. Non-degraded default virt class clears
  CDIDefaultStorageClassDegraded.
- platform/longhorn/storageclasses.yaml: NEW longhorn-vm StorageClass —
  migratable: "true" (Longhorn's KubeVirt-live-migration knob; RWX/Block-only on
  1.7.3), is-default-virt-class (NOT the k8s default; longhorn stays RWO default).
- platform/kubevirt/kubevirt-cr.yaml: comment only — LiveMigration is GA on v1.9
  (no feature gate); no cluster-wide evictionStrategy (would wedge RWO-disk drains);
  live-migration stays per-VM opt-in on a longhorn-vm disk.

Co-Authored-By: Claude Opus 4.8 <[email protected]>
2026-08-26 12:06:15 -05:00
..

platform/kubevirt

KubeVirt + CDI — run application VMs (IaaS) as Kubernetes resources on the same control plane, network, storage, and GitOps flow as containers.

What this stub is

A Kustomization that will pull the pinned KubeVirt operator + CDI operator release manifests (commented TODO — added in Phase 5), plus the KubeVirt and CDI custom resources that tune them. VM disks land on Longhorn PVCs via CDI; VMs inherit Cilium default-deny + egress classes.

Layer distinction (docs/01): these are Layer-2 application VMs (a feature the platform offers), NOT the Layer-1 cluster-node VMs (which WS-INFRA provisions with OpenTofu/libvirt). Do not conflate them.

Cross-workstream prerequisite

Nodes must expose virtualization extensions (nested virt in dev KVMs; native on prod) — a node baseline prerequisite owned by WS-INFRA (docs/02). Coordinate before Phase 5.

TODO (later phases — Phase 5, gated on Phases 2–3)

  • Add pinned operator release manifests as Kustomize bases; let Renovate maintain versions.
  • Run one representative application VM via a ServiceDefinition kind: vm; prove create/start/stop/ destroy via kubectl/virtctl, Longhorn-backed disk survives rebuild, default-deny + egress apply, guest auto-updates (Phase-5 exit gates).