BusyBox httpd spider Pods - https://blog.vamp.io/network-policies-made-easy-on-gke

busybox-pod2-httpd-spider.yaml

apiVersion: v1
kind: Pod
metadata:
  name: pod2
  labels:
    role: frontend
spec:
  containers:
  - name: busybox
    image: busybox
    command: ["/bin/sh","-c"]
    args: ["wget --spider --timeout=1 httpd-deployment.vamp; sleep 3m"]

busybox-pod3-httpd-spider.yaml

apiVersion: v1
kind: Pod
metadata:
  name: pod3
  labels:
    role: frontend
spec:
  containers:
  - name: busybox
    image: busybox
    command: ["/bin/sh","-c"]
    args: ["wget --spider --timeout=1 httpd-deployment.vamp:4222; sleep 3m"]