Scheduling pods - affinity pattern
Check node labels
kubectl get nodes --show-labels
Create new deployment without affinity
kubectl apply -f exercice-files/lab4-1.yaml
Check pods location
kubectl get pods -ocustom-columns=NAME:.metadata.name,NODE:.spec.nodeName
Recreate deployment with affinity
kubectl replace -f exercice-files/lab4-2.yaml
Check pods location
kubectl get pods -ocustom-columns=NAME:.metadata.name,NODE:.spec.nodeName
Clean up
kubectl delete -f exercice-files/lab4-2.yaml
To go further check the official documentation