OKD Virtualization is an add-on to OKD that allows you to run and manage virtual machine workloads alongside container workloads.
OKD Virtualization adds new objects into your OKD cluster by using Kubernetes custom resources to enable virtualization tasks. These tasks include:
Creating and managing Linux and Windows virtual machines
Connecting to virtual machines through a variety of consoles and CLI tools
Importing and cloning existing virtual machines
Managing network interface controllers and storage disks attached to virtual machines
Live migrating virtual machines between nodes
An enhanced web console provides a graphical portal to manage these virtualized resources alongside the OKD cluster containers and infrastructure.
OKD Virtualization is designed and tested to work well with Red Hat OpenShift Data Foundation features.
When you deploy OKD Virtualization with OpenShift Data Foundation, you must create a dedicated storage class for Windows virtual machine disks. See Optimizing ODF PersistentVolumes for Windows VMs for details.
You can install OKD Virtualization on a single-node cluster.
When provisioning a single-node OpenShift cluster with the assisted installer, preconfigured persistent storage is deployed automatically.
In OKD Virtualization 4.10 and 4.11, the HostPath Provisioner (HPP) is automatically installed.
In OKD Virtualization 4.12, the OpenShift Data Foundation Logical Volume Manager Operator is the provided out-of-the-box storage solution. You can also manually deploy using the HPP.
Single-node OpenShift does not support high availability. Be aware of the following differences in functionality from a multiple-node cluster: