Lab 11.1 has errors
In step 6, the PDF shows a "vip.yaml" that creates a SINGLE POD named "vip" that contains 4 busybox containers and a nodeselector that only allows the pod to run on the node which was previously labeled with "status=vip".
So far so good, the pod only runs on the "vip" node.
Step 8 has us delete the pod and change the pod spec to remove the nodeSelector.
Step 9 is where the correction is needed... it says that after recreatingc the pod "Containers should now be spawning on both nodes.".
IMPOSSIBLE! The smallest unit Kubernetes can schedule is a POD!
This lab needs to be changed so that more than one pod is being created so we can actually see something spawning on both nodes.