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Chapter 13. Provisioning virtual machines on OpenShift Virtualization


OpenShift Virtualization addresses the needs of development teams that have adopted or want to adopt Red Hat OpenShift Container Platform but possess existing virtual machine (VM) workloads that cannot be easily containerized. This technology provides a unified development platform where developers can build, modify, and deploy applications residing in application containers and VMs in a shared environment. These capabilities support rapid application modernization across the open hybrid cloud.

You can create a compute resource for OpenShift Virtualization so that you can provision and manage virtual machines in OpenShift Container Platform by using Satellite.

Note that template provisioning is not supported for this release.

Important

The OpenShift Virtualization compute resource is a Technology Preview feature only. Technology Preview features are not supported with Red Hat production service level agreements (SLAs) and might not be functionally complete. Red Hat does not recommend using them in production. These features provide early access to upcoming product features, enabling customers to test functionality and provide feedback during the development process.

For more information about the support scope of Red Hat Technology Preview features, see Technology Preview Features Support Scope.

Before you start provisioning virtual machines on OpenShift Virtualization, ensure that your environment meets the following requirements:

  • You must have the get, delete, create, update, patch, list, and watch permissions for VMs and other OpenShift Virtualization resources for the OpenShift Container Platform cluster in the specified namespace. You can get these permissions with the kubevirt.io:edit cluster role.
  • To use auto-completion for network selection, you must have the get and list permissions for the network-attachment-definitions.k8s.cni.cncf.io resource.
  • You can use synchronized content repositories for Red Hat Enterprise Linux. For more information, see Synchronizing repositories on demand in Managing content.
  • Provide an activation key for host registration. For more information, see Creating an activation key by using Satellite web UI in Managing content.
  • A Capsule Server managing a network on the OpenShift Container Platform cluster. Ensure that no other DHCP services run on this network to avoid conflicts with Capsule Server. For more information about network service configuration for Capsule Servers, see Preparing networking in Provisioning hosts.
  • Ensure the provisioning user has the required permissions to provision hosts.
Warning

By default, deleting a host entry associated with a virtual machine does not destroy the virtual machine on the compute resource.

To change the default behavior, navigate to Administer > Settings > Provisioning and set Destroy associated VM on host delete to Yes.

To provision and manage virtual machines on OpenShift Container Platform, add OpenShift Virtualization as a compute resource to Satellite.

Prerequisites

  • You have the oc command-line tool installed.

Procedure

  1. Enter the following satellite-installer command to enable the OpenShift Virtualization plugin for Satellite:

    # satellite-installer --enable-foreman-plugin-kubevirt
  2. Obtain a token to use for HTTP and HTTPs authentication:

    1. Create a service account:

      $ oc create serviceaccount My_Service_Account --namespace My_Namespace
    2. Add the kubevirt.io:edit role to the service account:

      $ oc create rolebinding My_Service_Account-kubevirt-edit --clusterrole=kubevirt.io:edit --serviceaccount=My_Namespace:My_Service_Account
    3. Add the view role to the service account:

      $ oc create rolebinding My_Service_Account-view --clusterrole=view --serviceaccount=My_Namespace:My_Service_Account
    4. Create a persistent token for the account:

      $ oc create --filename=- <<EOF
      apiVersion: v1
      kind: Secret
      metadata:
        name: My_SA_Token
        annotations:
          kubernetes.io/service-account.name: My_Service_Account
      type: kubernetes.io/service-account-token
      EOF
    5. Record the token to use later in this procedure.

      $ oc get secrets My_SA_Token --template='{{.data.token | base64decode}}'
  3. In the Satellite web UI, navigate to Infrastructure > Compute Resources, and click Create Compute Resource.
  4. In the Name field, enter a name for the new compute resource.
  5. From the Provider list, select OpenShift Virtualization.
  6. In the Description field, enter a description for the compute resource.
  7. In the Hostname field, enter the FQDN, hostname, or IP address of the OpenShift Container Platform cluster.
  8. In the API Port field, enter the port number that you want to use for provisioning requests from Satellite to OpenShift Virtualization.
  9. In the Namespace field, enter the namespace of the OpenShift Container Platform cluster.
  10. In the Token field, enter the token you recorded.
  11. Optional: In the X509 Certification Authorities field, enter a certificate to enable client certificate authentication for API server calls.

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