demo.yaml

---
kind: ConfigMap
apiVersion: v1
metadata:
  name: gethello
data:
  gethello.sh: |
    while true; do
      echo checking http://hello-0.hello.default.svc.cluster.local/
      curl -o /dev/null -s -w "%{http_code}\n" http://hello-0.hello.default.svc.cluster.local/

      echo checking http://hello-1.hello.default.svc.cluster.local/
      curl -o /dev/null -s -w "%{http_code}\n" http://hello-1.hello.default.svc.cluster.local/

      echo checking http://hello-2.hello.default.svc.cluster.local/
      curl -o /dev/null -s -w "%{http_code}\n" http://hello-2.hello.default.svc.cluster.local/

      sleep 3
    done
---
apiVersion: apps/v1beta1
kind: Deployment
metadata:
  labels:
    app: gethello
  name: gethello
spec:
  replicas: 1
  template:
    metadata:
      labels:
        app: gethello
      name: gethello
      annotations:
        linkerd.io/inject: disabled
    spec:
      containers:
        - name: gethello
          image: jessecollier/curl-alpine
          imagePullPolicy: Always
          command: ["/bin/sh"]
          args:
            - "/tmp/gethello/gethello.sh"
          volumeMounts:
            - name: gethello
              mountPath: /tmp/gethello
      volumes:
        - name: gethello
          configMap:
            name: gethello
            items:
              - key: gethello.sh
                path: gethello.sh
---
kind: Service
apiVersion: v1
metadata:
  name: hello
  labels:
    app: hello
    service: hello
spec:
  clusterIP: None
  ports:
  - name: hello
    port: 80
    targetPort: hello
  selector:
    app: hello
---
kind: StatefulSet
apiVersion: apps/v1
metadata:
  name: hello
  labels:
    app: hello
spec:
  replicas: 3
  serviceName: hello
  selector:
    matchLabels:
      app: hello
  template:
    metadata:
      labels:
        app: hello
      annotations:
        linkerd.io/inject: disabled
    spec:
      containers:
      - name: hello
        image: gcr.io/hightowerlabs/helloworld:3.0.0
        ports:
        - containerPort: 8080
          name: hello
        args:
          - "-http=127.0.0.1:8080"