12.2.4. Creating a live migration policy by using the CLI

Procedure

1. Edit the VM object to which you want to apply a live migration policy, and add the corresponding VM labels.

   1. Open the YAML configuration of the resource:

      $ oc edit vm <vm_name>

   2. Adjust the required label values in the .spec.template.metadata.labels section of the configuration. For example, to mark the VM as a production VM for the purposes of migration policies, add the kubevirt.io/environment: production line:

      apiVersion: migrations.kubevirt.io/v1alpha1
      kind: VirtualMachine
      metadata:
        name: <vm_name>
        namespace: default
        labels:
          app: my-app
          environment: production
      spec:
        template:
          metadata:
            labels:
              kubevirt.io/domain: <vm_name>
              kubevirt.io/size: large
              kubevirt.io/environment: production
      # ...

   3. Save and exit the configuration.

2. Configure a MigrationPolicy object with the corresponding labels. The following example configures a policy that applies to all VMs that are labeled as production:

   apiVersion: migrations.kubevirt.io/v1alpha1
   kind: MigrationPolicy
   metadata:
     name: <migration_policy>
   spec:
     selectors:
       namespaceSelector:
         hpc-workloads: "True"
         xyz-workloads-type: ""
       virtualMachineInstanceSelector:
         kubevirt.io/environment: "production"

   where:

   namespaceSelector

   Specifies the project labels.

   virtualMachineInstanceSelector

   Specifies the VM labels.

3. Create the migration policy by running the following command:

   $ oc create -f <migration_policy>.yaml