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fix(vm): make virtualMachineCIDRs optional#2591

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fix/vm/main-network-is-optional-cidrs-not-required-in-module-config
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fix(vm): make virtualMachineCIDRs optional#2591
diafour wants to merge 25 commits into
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fix/vm/main-network-is-optional-cidrs-not-required-in-module-config

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@diafour diafour commented Jul 3, 2026

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Description

Allow ModuleConfig without spec.settings.virtualMachineCIDRs.

What changed:
- Make virtualMachineCIDRs optional in OpenAPI schema.
- Stop blocking module enablement when CIDRs are not configured.
  - Make ModuleConfig CIDR parsing safe when the field is absent.
  - Skip CIDR overlap checks when virtualMachineCIDRs is not set.
- New behavior when CIDRs are not configured:
  - Reject VMs with explicit Main network.
  - Reject VMIP usage and VirtualMachineIPAddress resources.
- Validate changing ModuleConfig: protect removing CIDRs if VMIP leases are present.

Also updated docs and tests.

Why do we need it, and what problem does it solve?

What is the expected result?

Checklist

  • The code is covered by unit tests.
  • e2e tests passed.
  • Documentation updated according to the changes.
  • Changes were tested in the Kubernetes cluster manually.

Changelog entries

section: vm
type: fix
summary: "Allow module enabling and VM creation when ModuleConfig configured without spec.settings.virtualMachineCIDRs."

@diafour diafour added this to the v1.10.0 milestone Jul 3, 2026
@diafour
diafour force-pushed the fix/vm/main-network-is-optional-cidrs-not-required-in-module-config branch from 69366eb to a8a31b9 Compare July 3, 2026 17:52
Isteb4k and others added 2 commits July 7, 2026 13:46
Signed-off-by: Dmitry Rakitin <dmitry.rakitin@flant.com>
Co-authored-by: Claude Fable 5 <noreply@anthropic.com>
Changelog v1.9.3

Signed-off-by: deckhouse-BOaTswain <89150800+deckhouse-boatswain@users.noreply.github.com>
Co-authored-by: universal-itengineer <universal-itengineer@users.noreply.github.com>
@diafour diafour self-assigned this Jul 7, 2026
eofff and others added 18 commits July 8, 2026 17:39
Signed-off-by: Valeriy Khorunzhin <valeriy.khorunzhin@flant.com>
During a restore the VM is stopped inside the maintenance window: its KVVMI and then the KVVM itself are deleted. Bringing the VM back up afterwards relied on an implicit side effect — the recreated KVVM getting RunStrategy=Always at creation time. That path is racy and only covers the always-on policies.

---------

Signed-off-by: Daniil Antoshin <daniil.antoshin@flant.com>
)

Signed-off-by: Maksim Fedotov <maksim.fedotov@flant.com>
Signed-off-by: Maksim Fedotov <maksim.fedotov@flant.com>
Add validation to getIPerfClientReport verifying that the iperf client session spans the virtual machine migration: start time before migration start, end time after migration end, and no more than one zero-byte interval during the process.

Signed-off-by: Dmitry Prytkov <dmitry.prytkov@flant.com>
…refix (#2594)

The d8 v ansible-inventory command read host variables from the bare
provisioning.virtualization.deckhouse.io/ prefix, while the
virtualization-provisioner module reads them from the separate
vars.provisioning.virtualization.deckhouse.io/ prefix. The same VM
annotations produced different inventories depending on the tool.

Read host variables from the vars. prefix to match the module. Groups
still come from provisioning.virtualization.deckhouse.io/groups. Update
the command help, usage examples and the ansible-inventory FAQ.

Signed-off-by: Pavel Tishkov <pavel.tishkov@flant.com>
…d manually (#2596)

fix(vm): fix VM stuck until the child KVVMI in Failed phase is deleted manually

Signed-off-by: Yaroslav Borbat <yaroslav.borbat@flant.com>
Virtualization has no primitive to manage a group of identical virtual machines whose count changes over time. Every "I need N identical VMs and the number varies" scenario — CI runner fleets, VDI desktop pools — has to be solved with orchestration outside the platform: users write their own controllers/scripts to create and delete VirtualMachines, watch their number, recreate lost ones and clean up their disks. This duplicates logic and is error-prone around races and node failures.

This PR introduces VirtualMachinePool (paid editions only, EE/SE+): a namespaced resource that declaratively keeps a requested number of identical VMs and integrates with kubectl scale, HPA and KEDA through the standard scale subresource. Its template is an ordinary VirtualMachineSpec, so a replica is no different from a manually created VM.

The feature is complete and covers:

Replica management — keeps the requested number of identical VMs, replaces lost ones, and reports state in status (replicas, readyReplicas, selector, conditions). It is cache-lag-safe (ReplicaSet-style expectations), so a lagging informer cache cannot double-create replicas.
Scale-down policy — NewestFirst / OldestFirst choose which replica leaves on anonymous scale-down via scale; Explicit forbids anonymous shrink through a webhook, so for "busy" workloads (CI runners, VDI) replicas can only be removed by address.
Addressed removal — the scaleDownWith subresource deletes named replicas and shrinks the pool by that count, instead of letting the controller pick victims.
In-place template propagation — editing the template rolls the change out to existing replicas; disruptive changes wait for a restart and are surfaced via status.restartPendingReplicas.
Reusable disks — per-replica disks are described in virtualDiskTemplates with a reclaim policy: Delete disks belong to the VM and are removed with it; Retain disks belong to the pool, outlive the replica and are reused on the next scale-up, with an optional warm buffer (keep) and TTL garbage-collection.
The resource is available only in paid editions, gated behind the VirtualMachinePool module feature gate (default off, locked off in CE). The API/CRD installs in every edition, but the controller self-gates on the feature gate, so the resource does nothing in CE.

---------

Signed-off-by: Pavel Tishkov <pavel.tishkov@flant.com>
Signed-off-by: Vladislav Panfilov <vladislav.panfilov@flant.com>
Co-authored-by: Vladislav Panfilov <vladislav.panfilov@flant.com>
…ate (#2621)

The VirtualMachinePool feature gate was an opt-in placeholder. As the feature
has not been released yet, drop the gate before release so the resource is
available in EE/SE+ out of the box and stays unavailable in CE — the same model
as VolumeMigration/TargetMigration. Nothing to migrate: the gate never shipped.

- gate becomes locked-on in EE/SE+, locked-off in CE (no user opt-in)
- dropped from the user-facing featureGates enum
- pool webhooks gated by edition in helm instead of the feature-gate list

Controller/webhooks keep self-gating on the now-locked gate.

Signed-off-by: Pavel Tishkov <pavel.tishkov@flant.com>
Adds:

- liveMigration.systemNetworkName ModuleConfig field. When set, VM live-migration traffic is routed over the per-node interfaces of a SystemNetwork CR from the SDN instead of the default node network.
- migrationiface controller resolves the per-node kernel interface name and writes it onto each Node as the annotation virtualization.deckhouse.io/migration-iface. virt-handler reads that annotation at startup and binds its migration proxy to the SystemNetwork's per-node IP.
- ModuleConfig validator to check if SystemNetwork added to liveMigration.systemNetworkName exists.
- New reason for VMOP if migration network is unavailable on nodes.

---------

Signed-off-by: Daniil Loktev <lokt.daniil@gmail.com>
Signed-off-by: Daniil Loktev <70405899+loktev-d@users.noreply.github.com>
Signed-off-by: Vladislav Panfilov <97229646+prismagod@users.noreply.github.com>
Co-authored-by: Vladislav Panfilov <97229646+prismagod@users.noreply.github.com>
Description
Log in to the private RU registry in the release channels workflow and check module versions against registry.deckhouse.ru/deckhouse.

Why do we need it, and what problem does it solve?
Release channel checks need access to artifacts in the RU registry. This keeps the workflow and version check pointed at the registry that contains the expected release artifacts.

---------

Signed-off-by: Nikita Korolev <nikita.korolev@flant.com>
…lose gaps (#2602)

Sizing policy validation errors were confusing and, in some cases, missing. When a VirtualMachineClass sets per-core memory limits, the error reported the allowed values per CPU core, while users configure the total memory — so the suggested numbers matched nothing they could actually set. Messages now report the total memory to set for the current number of cores, name the field to change, and combine multiple violations into a single readable list.

This also fixes cases where the policy was silently not enforced: the CPU cores step was never validated, and a memory / per-core minimum was ignored when no maximum was set.

Signed-off-by: Pavel Tishkov <pavel.tishkov@flant.com>
* docs: add VM launcher update notes to release notes

Signed-off-by: Vladislav Panfilov <vladislav.panfilov@flant.com>
Description
Removes CDI (Containerized Data Importer) from the platform. Disk and image provisioning no longer goes through CDI DataVolumes — the module now owns the whole import pipeline:

The VD/VI controllers create and track importer/uploader pods and target PVCs directly (new source/step pipeline instead of the DataVolume path).
A new PVC populator controller populates target PVCs from DVCR; host-assigned PVC cloning uses nbdcopy; the clone strategy (snapshot vs host-assigned) is picked from the StorageProfile, cross-CSI PVC-to-PVC cloning is forbidden.
The CDI importer sources are slimmed down into a pvc-importer image; import progress is streamed live from the target pod into the resource status.
CDI deployments (cdi-operator, cdi-apiserver, cdi-controller, cdi-cloner) and their templates/RBAC are removed; a module hook cleans up CDI resources on upgrade while keeping the CDI config CRD for safe rollback to main.
e2e: expanded block-device coverage with progress/quota observers, WFFC and cross-CSI scenarios.
Bugs fixed along the way
Progress & phases

Import progress could jump backwards after an importer pod restart (metric reset to 0); it is now monotonic (c2a61a4).
An optimistic "0%" surfaced as an intermediate Pending 0% status; Pending now reports no progress and the Pending→Provisioning transition is atomic (d122212).
Progress flip-flopped between 50%/50.0%; percent formatting is now consistent (00b93a0).
VirtualImage-on-PVC never streamed intermediate progress (hardcoded 0%→50%→100%) and under-reported the produced image size, breaking downstream PVC sizing; both now come from the importer pod (680608b).
A busy importer /metrics endpoint could freeze Status.Progress for the whole scrape budget (d122212).
Import pipeline

Interrupted PVC imports were not resumed for already-created targets (b95b230).
Importer pods for VI/CVI sourced from a VI-on-PVC always mounted the source as a block device, failing with FailedMount on volumeMode: Filesystem PVCs (b79920c).
VirtualImage PVC auto-sizing tripped a false "insufficient size" check (7edb744); status.format was copied from source metadata instead of the actual PVC storage type (0fa1bcf).
VirtualImage WFFC imports hung in the populator flow (0fb3661); smart-clone image PVCs were never bound (8cc0139).
Clone snapshots set a VolumeSnapshotClassName picked by provisioner match, which the d8-snapshot-controller webhook could reject (d59b1e2); replicated PVCs now use the snapshot clone strategy (c2f69e1).
pvc-importer inherited generic provisioning pod limits, throttling imports ~30% and risking OOMKill on huge images; limits raised to CDI parity (b50d7b2).
Importer/uploader/bounder pods are labeled to be excluded from project resource quotas (d122212, and quota guards in 9b7fc55).
A create rejection in a terminating namespace failed the reconcile instead of being surfaced on the Ready condition (c2a61a4).
Migrations & VMOP

The inbound migration limiter leaked slots of VMIs deleted mid-migration, eventually freezing all migrations cluster-wide (43e4f3c).
Affinity changes of VMs with local (RWO) disks never triggered a placement migration: the handler required live-migratability and ignored StorageLiveMigratable (67c29ba).
The workload updater kept creating evict VMOPs that the webhook was guaranteed to deny, flooding controller logs (f6b0ac0).
Why do we need it, and what problem does it solve?
CDI was a heavyweight third-party dependency (4 deployments, its own CRDs and RBAC) used only as a PVC provisioning backend. Owning the import pipeline removes the DataVolume indirection, gives accurate live import progress, allows to fix bugs directly, and cuts the CVE/maintenance surface of the vendored CDI codebase.

What is the expected result?
Creating VirtualDisks/VirtualImages from all sources (HTTP, containerRegistry, ObjectRef, upload, blank) works as before without any CDI components in the cluster; import progress is reported in the resource status. Upgrading from main cleans up CDI resources automatically; rollback to main remains safe.

---------

Signed-off-by: Dmitry Rakitin <dmitry.rakitin@flant.com>
Bump the size of the VirtualDisk restored from a VirtualImage in the VirtualImageCreation e2e suite from 400Mi to 450Mi. The change is in the shared runVirtualMachineFromImageDisk helper (test/e2e/blockdevice/virtual_image_creation.go), so it covers every context that boots a VM from a restored image disk (from a VirtualDisk, from a VirtualDiskSnapshot, from a VirtualImage on DVCR/PVC).

---

Signed-off-by: Dmitry Rakitin <dmitry.rakitin@flant.com>
Integrates the new bpfbridge network binding plugin (kubevirt side: deckhouse/3p-kubevirt#99) into the virtualization module and switches VM network interfaces to it, replacing the classic tap + veth + Linux-bridge datapath used for VM networks.

Signed-off-by: Dmitry Lopatin <dmitry.lopatin@flant.com>
Signed-off-by: Maksim Garmonov <maksim.garmonov@flant.com>
Allow ModuleConfig without spec.settings.virtualMachineCIDRs.

What changed:
- Make virtualMachineCIDRs optional in OpenAPI schema.
- Stop blocking module enablement when CIDRs are not configured.
  - Make ModuleConfig CIDR parsing safe when the field is absent.
  - Skip CIDR overlap checks when virtualMachineCIDRs is not set.
- New behavior when CIDRs are not configured:
  - Reject VMs with explicit Main network.
  - Reject VMIP usage and VirtualMachineIPAddress resources.
- Validate changing ModuleConfig: protect removing CIDRs if VMIP leases are present.

Also updated docs and tests.

Signed-off-by: Ivan Mikheykin <ivan.mikheykin@flant.com>
Signed-off-by: Ivan Mikheykin <ivan.mikheykin@flant.com>
@diafour
diafour force-pushed the fix/vm/main-network-is-optional-cidrs-not-required-in-module-config branch from a8a31b9 to d10b033 Compare July 9, 2026 17:59
diafour added 3 commits July 10, 2026 11:50
Signed-off-by: Ivan Mikheykin <ivan.mikheykin@flant.com>
…anging metadata and status.

Signed-off-by: Ivan Mikheykin <ivan.mikheykin@flant.com>
Signed-off-by: Ivan Mikheykin <ivan.mikheykin@flant.com>
@diafour
diafour marked this pull request as ready for review July 10, 2026 16:32
Signed-off-by: Ivan Mikheykin <ivan.mikheykin@flant.com>
@diafour
diafour requested a review from z9r5 as a code owner July 13, 2026 10:30
z9r5
z9r5 previously approved these changes Jul 13, 2026
- Set VirtualMachineIPAddress condition to false if VM was created before changes in ModuleConfig and user starts it.

Signed-off-by: Ivan Mikheykin <ivan.mikheykin@flant.com>
func (v *NetworksValidator) ValidateUpdate(ctx context.Context, oldVM, newVM *v1alpha2.VirtualMachine) (admission.Warnings, error) {
newNetworksSpec := newVM.Spec.Networks

if err := v.validateMainOnlyNetworkSpec(ctx, newNetworksSpec); err != nil {

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block every change, not only in network settings scope

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