Description of problem:

1. Create a new VM from template, dont start it

2. Virtualization -> Virtual Machines -> VM -> Details

3. Under "Scheduling and resources requirements", click the pencil to edit Affinity Rules -> Add Affinity Rule

4. Fill the following

Type: Node Affinity
Condition: Preferred during scheduling (not default, change it)
Weight: 100
Node Labels
Key Op Values
kubernetes.io/hostname In <your node hostname>

5. Click "Save Affinity Rule"

6. Click "Save"

7. Start the VM

8. Result:

Error creating pod: Pod "virt-launcher-rhel8-narrow-grasshopper-gqpln" is invalid: spec.affinity.nodeAffinity.requiredDuringSchedulingIgnoredDuringExecution.nodeSelectorTerms: Required value: must have at least one node selector term

9. Why? See what it did in the yaml...

spec:
affinity:
nodeAffinity:
preferredDuringSchedulingIgnoredDuringExecution: <---- this is what I configured

• preference:
  matchExpressions:
• key: kubernetes.io/hostname
  operator: In
  values:
• white.shift.toca.local
  weight: 100
  requiredDuringSchedulingIgnoredDuringExecution: <--- I configured preferred only, I did not set any required rule
  nodeSelectorTerms: [] <--- error above caused by this
  podAffinity: {}
  podAntiAffinity: {}

Version-Release number of selected component (if applicable):
4.10.9

How reproducible:
Always

Steps to Reproduce:
As above

Actual results:
VM wont start

Expected results:
Vm starts