Available with limitations in:  CE

Available without limitations in:  SE+, EE

Generally available version. Ready to be used in production environments.

Description

The virtualization module allows you to declaratively create, start, and manage virtual machines and associated resources.

The command line utility d8 is used to manage cluster resources.

Usage scenarios

  • Running virtual machines with an x86-64-compatible OS.

  • Running virtual machines and containerized applications in the same environment.

  • Creation of DKP clusters.

If you plan to use virtualization in a production environment, it is recommended to use a cluster deployed on physical (bare-metal) servers. For testing purposes, it is allowed to use the module in a cluster deployed on virtual machines but with nested virtualization enabled on them.

Architecture

The module includes the following components:

  • A module core (CORE) that is based on the KubeVirt project and uses QEMU/KVM + libvirtd to run virtual machines.
  • Deckhouse Virtualization Container Registry (DVCR), a repository for storing and caching virtual machine images.
  • Virtualization API (API), a controller that implements a user API for creating and managing virtual machine resources.

List of controllers and operators deployed in the d8-virtualization namespace after the module is enabled:

Name Component Comment
cdi-operator-* CORE Virtualization core component for disk and image management.
cdi-apiserver-* CORE Virtualization core component for disk and image management.
cdi-deployment-* CORE Virtualization core component for disk and image management.
dvcr-* DVCR A registry to store images.
virt-api-* CORE Virtualization core component for disk and image management.
virt-controller-* CORE Virtualization core component for disk and image management.
virt-exportproxy-* CORE Virtualization core component for disk and image management.
virt-handler-* CORE Virtualization core component for disk and image management. Must be present on all cluster nodes where VMs will be started.
virt-operator-* CORE Virtualization core component for disk and image management.
virtualization-api-* API API for creating and managing module resources (images, disks, VMs, etc.).
virtualization-controller-* API API for creating and managing module resources (images, disks, VMs, etc.).
virtualization-audit-* Security Audit logs for virtualization module reources.
vm-route-forge-* CORE Router for configuring routes to VMs. Must be present on all cluster nodes where VMs will be started.

The virtual machine runs inside the pod, which allows you to manage virtual machines as regular Kubernetes resources and utilize all the platform features, including load balancers, network policies, automation tools, etc.

The API provides the ability to declaratively create, modify, and delete the following underlying resources:

  • Virtual machine images and boot images.
  • Virtual machine disks.
  • Virtual machines.