CKAD Mock Exam 2 Q2 is broken with old bug

Lab Support
#1

CKAD Mock Exam 2 Q4 is broken; the ingress-nginx admission controller is refusing requests. Sample use question, of two I’ve seen in the last 12 hours:

Mock Exam 2 - Ingress doesn’t work

The 4th question in Mock Exam 2 is broken. I was unable to create Ingress because of the following error:

controlplane ~ ➜ k apply -f 4solution.yml

Error from server (InternalError): error when creating “4solution.yml”: Internal error occurred: failed calling webhook “validate.nginx.ingress.kubernetes.io”: failed to call webhook: Post "https://ingress-nginx-controller-admission.ingress-nginx.svc:443/networking/v1/ingresses?timeout=10s": dial tcp 10.103.129.253:443: connect: connection refused

#2

This must be an intermittent issue. I have completed that question successfully

controlplane ~ ➜  k create ingress my-video-service --annotation nginx.ingress.kubernetes.io/rewrite-target=/ --rule ckad-mock-exam-solution.com/video=my-video-service:8080
ingress.networking.k8s.io/my-video-service created

controlplane ~ ➜  curl http://ckad-mock-exam-solution.com:30093/video
<!doctype html>
<title>Hello from Flask</title>
<body style="background: #30336b;">

<div style="color: #e4e4e4;
    text-align:  center;
    height: 90px;
    vertical-align:  middle;">
    <img src="https://res.cloudinary.com/cloudusthad/image/upload/v1547052431/video.jpg">

</div>

</body>
controlplane ~ ➜
#3

Yeah, it works now. The failure of the admission controller would occur when k create ing ... was run (I saw this as well about 8 hours ago), but right now, the resource gets created without a fuss:

controlplane ~ ➜  k create ing testing --annotation nginx.ingress.kubernetes.io/rewrite-target=/ --rule ckad-mock-exam-solution.com/video=my-video-service:8080
ingress.networking.k8s.io/testing created