ConfigMap and Secret
Create configmap and secret
kubectl apply -f exercice-files/lab7-1.yaml

Create same deployment in both namespace
kubectl apply -n ns1 -f exercice-files/lab7-2.yaml
kubectl apply -n ns2 -f exercice-files/lab7-2.yaml

Check applications
kubectl get pod -A -l app=test-cm-sec

kubectl exec -n {NAMESPACE} -i {POD NAME} -- wget -qO- http://127.0.0.1

Cleanup
kubectl delete -f exercice-files/lab7-1.yaml

(Deleting a namespace trigger deletion of its resource)