Chapter 8. Virtual machine templates

Procedure

1. In the OpenShift Virtualization console, click Workloads Virtualization from the side menu.
2. Click the Virtual Machine Templates tab.
3. Click Create Template and select New with Wizard.
4. Fill in all required fields in the General step.

5. Click Next to progress to the Networking screen. A NIC that is named nic0 is attached by default.

   1. Optional: Click Add Network Interface to create additional NICs.
   2. Optional: You can remove any or all NICs by clicking the Options menu and selecting Delete. Virtual machines created from a template do not need a NIC attached. NICs can be created after a virtual machine has been created.

6. Click Next to progress to the Storage screen.

   1. Optional: Click Add Disk to create additional disks.
   2. Optional: Click a disk to modify available fields. Click the ✓ button to save the changes.

   3. Optional: Click Disk to choose an available disk from the Select Storage list.

      Note

      If either URL or Container are selected as the Source in the General step, a rootdisk disk is created and attached to virtual machines as the Bootable Disk. You can modify the rootdisk but you cannot remove it.

      A Bootable Disk is not required for virtual machines provisioned from a PXE source if there are no disks attached to the virtual machine. If one or more disks are attached to the virtual machine, you must select one as the Bootable Disk.

7. Click Create Virtual Machine Template >. The Results screen displays the JSON configuration file for the virtual machine template.

   The template is listed in the Virtual Machine Templates tab.

Procedure

1. Click Workloads Virtualization from the side menu.
2. Click the Virtual Machine Templates tab.
3. Select a virtual machine template to open the Virtual Machine Template Overview screen.
4. Click the Details tab.
5. Click the pencil icon to make a field editable.
6. Make the relevant changes and click Save.

Procedure

1. In the OpenShift Virtualization console, click Workloads Virtualization from the side menu.
2. Click the Virtual Machine Templates tab.
3. Select a template.
4. Click the YAML tab to display the editable configuration.
5. Edit the file and click Save.

Procedure

1. From the Virtual Machine Templates tab, select your virtual machine template.
2. Select the Disks tab.
3. Click Add Disks to open the Add Disk window.

4. In the Add Disk window, specify Source, Name, Size, Interface, and Storage Class.

   1. Optional: In the Advanced list, specify the Volume Mode and Access Mode for the virtual disk. If you do not specify these parameters, the system uses the default values from the kubevirt-storage-class-defaults ConfigMap.
5. Use the drop-down lists and check boxes to edit the disk configuration.
6. Click OK.

Procedure

1. From the Virtual Machine Templates tab, select the virtual machine template.
2. Select the Network Interfaces tab.
3. Click Add Network Interface.
4. In the Add Network Interface window, specify the Name, Model, Network, Type, and MAC Address of the network interface.
5. Click Add to add the network interface.
6. Restart the virtual machine to enable access.
7. Edit the drop-down lists and check boxes to configure the network interface.
8. Click Save Changes.
9. Click OK.

Procedure

1. From the Virtual Machine Templates tab, select your virtual machine template.
2. Select the Overview tab.

3. To add or edit a CD-ROM configuration, click the pencil icon to the right of the CD-ROMs label. The Edit CD-ROM window opens.

   • If CD-ROMs are unavailable for editing, the following message displays: The virtual machine doesn’t have any CD-ROMs attached.
   • If there are CD-ROMs available, you can remove a CD-ROM by clicking -.

4. In the Edit CD-ROM window, do the following:

   1. Select the type of CD-ROM configuration from the drop-down list for Media Type. CD-ROM configuration types are Container, URL, and Persistent Volume Claim.
   2. Complete the required information for each Type.
   3. When all CD-ROMs are added, click Save.

Procedure

1. Click Workloads Virtual Machine Templates from the side menu.
2. Select a virtual machine template to open the Virtual Machine Template Overview page.
3. Click the Details tab.
4. Click the pencil icon to the right of the Dedicated Resources field to open the Dedicated Resources window.
5. Select Schedule this workload with dedicated resources (guaranteed policy).
6. Click Save.

Procedure

1. In the OpenShift Virtualization console, click Workloads Virtualization from the side menu.
2. Click the Virtual Machine Templates tab.

3. You can delete the virtual machine template from this pane, which makes it easier to perform actions on multiple templates in the one pane, or from the Virtual Machine Template Details pane where you can view comprehensive details of the selected template:

   • Click the Options menu of the template to delete and select Delete Template.
   • Click the template name to open the Virtual Machine Template Details pane and click Actions Delete Template.
4. In the confirmation pop-up window, click Delete to permanently delete the template.