2. KubeVirt configuration

Getting to know the lab environment. KubeVirt-specific configuration on the lab cluster.

KubeVirt installation

On the Kubernetes cluster used for this training, the following Operators have been installed:

Operator nameNamespace
KubeVirtkubevirt
Containerized Data Impoter (CDI)cdi

As the configuration and the required feature flags are subject to change, we do not highlight them in every section.

Emulation

For local development and test environments, the emulation can be turned on. This may have a huge impact to the performance.

apiVersion: kubevirt.io/v1
kind: KubeVirt
metadata:
  name: kubevirt
  namespace: kubevirt
spec:
  configuration:
    developerConfiguration:
      useEmulation: true
[...]

The Lab cluster is not using emulation.

Enabled Kubernetes feature flags

In the cluster, the following KubeVirt feature flags are enabled:

apiVersion: kubevirt.io/v1
kind: KubeVirt
metadata:
  name: kubevirt
  namespace: kubevirt
spec:
  configuration:
    developerConfiguration:
      featureGates:
      - Sidecar
      - CommonInstancetypesDeploymentGate
      - ExperimentalIgnitionSupport
      - HotplugVolumes
      - ExpandDisks
      - Snapshot
      - VMExport
      - BlockVolume
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