Create a VM Template

Although Palette provides out-of-the box templates, we recommend that you create and manage your own templates.

Prerequisites

• Valid YAML that defines your VM template.

Create a VM Template

Create a template by adding a YAML file as a manifest in an add-on profile.

1. Log in to Palette.

2. From the left Main Menu, click Profiles and click the Add Cluster Profile button.

3. Give the profile a name, select type Add-on, and click Next.

4. On the Profile Layers page, click Add Manifest.

5. Give the layer a name, and click Edit manifest and enter a name for the first template. Click the checkmark icon.

6. In the blank manifest file at right, enter the VM definition as a YAML file. You can add multiple manifests for multiple templates in the same add-on profile. They will display as layers in the profile.

7. Click Confirm and Create, then click Next.

8. Click Finish Configuration.

   Example YAML for a VM template

   apiVersion: kubevirt.io/v1
   kind: VirtualMachine
   metadata:
     name: example
     namespace: default
     labels:
       app.kubernetes.io/managed-by: Helm
       kubevirt.io/vm: example
   spec:
     dataVolumeTemplates:
       - metadata:
           name: example-dv-u2204-sip
         spec:
           pvc:
             accessModes:
               - ReadWriteMany
             resources:
               requests:
                 storage: 50Gi
           source:
             registry:
               url: >-
                 docker://gcr.io/spectro-images-public/release/virtual-machine-orchestrator/os/ubuntu-container-disk:22.04
     running: false
     template:
       metadata:
         annotations:
           descheduler.alpha.kubernetes.io/evict: "true"
       spec:
         domain:
           cpu:
             cores: 8
             sockets: 1
             threads: 1
           devices:
             disks:
               - disk:
                   bus: virtio
                 name: datavolume-os
               - disk:
                   bus: virtio
                 name: cloudinitdisk
             interfaces:
               - bridge: {}
                 model: virtio
                 name: default
                 macAddress: "06:AD:69:40:F0:94"
           machine:
             type: q35
           resources:
             limits: {}
             requests: {}
           memory:
             guest: 16Gi
         networks:
           - multus:
               networkName: vlan-0
             name: default
         volumes:
           - dataVolume:
               name: example-dv-u2204-sip
             name: datavolume-os
           - cloudInitNoCloud:
               networkData: |
                 network:
                   version: 1
                   config:
                     - type: physical
                       name: enp1s0
                       subnets:
                         #- type: dhcp
                         - type: static
                           address: a.b.c.d/prefixlength
                           gateway: e.f.g.h
                     - type: nameserver
                       address:
                         - 8.8.8.8
               userData: |
                 #cloud-config
                 ssh_pwauth: True
                 chpasswd: { expire: False }
                 password: spectro
                 disable_root: false
                 runcmd:
                   - apt-get update
                   - apt-get install -y qemu-guest-agent
                   - systemctl start qemu-guest-agent
             name: cloudinitdisk

Validate

1. Navigate to the left Main Menu and click Profiles.

2. Verify your newly added manifest is listed.

Next Steps

Try applying the template to your cluster. Navigate to Clusters and click + next to Addon Layers, then select the VMO profile you created.