nginx-scenario3-withProbes.yaml

kind: Service
apiVersion: v1
metadata:
  name: nginx
  labels:
    app: nginx
spec:
  selector:
    app: nginx
  type: LoadBalancer
  ports:
    - protocol: TCP
      port: 80
      targetPort: 80
---
apiVersion: apps/v1
kind: Deployment
metadata:
  name: nginx
spec:
  replicas: 1
  selector:
    matchLabels:
      app: nginx
  template:
    metadata:
      labels:
        app: nginx
    spec:
      volumes:
      - name: www
        emptyDir: {}
      containers:
      - name: nginx
        image: nginx:1.13.0
        ports:
        - containerPort: 80
        volumeMounts:
        - name: www
          mountPath: /usr/share/nginx/html
        livenessProbe:
          successThreshold: 1
          periodSeconds: 1
          httpGet:
            path: /alive
            port: 80
        readinessProbe:
          successThreshold: 1
          periodSeconds: 1
          httpGet:
            path: /ready
            port: 80
      # alternate every minute the pod being "ready" by removing a file that would be used by a readiness probe
      - name: flapper
        image: busybox
        command: ["sh", "-c", "while true; do var=$((1-var)); if [ $var -eq 0 ];then echo OK > /usr/share/nginx/html/ready; else rm /usr/share/nginx/html/ready;fi; sleep 30; done"]
        volumeMounts:
        - name: www
          mountPath: /usr/share/nginx/html
      initContainers:
      - name: slowness
        image: busybox
        command: ['sh', '-c', 'echo "Sleeping 10 seconds..." && sleep 20 && echo OK > /usr/share/nginx/html/alive']
        volumeMounts:
        - name: www
          mountPath: /usr/share/nginx/html