testsvc_ha.yaml

kind: Service
apiVersion: v1
metadata:
  name: testsvc
spec:
  selector:
    app: test
  ports:
  - protocol: TCP
    port: 8001
    targetPort: 8000

---
apiVersion: policy/v1beta1
kind: PodDisruptionBudget
metadata:
  name: testsvc-pdb
spec:
  minAvailable: 2
  selector:
    matchLabels:
      app: test
---
apiVersion: apps/v1
kind: Deployment
metadata:
  name: test
  labels:
    app: test
spec:
  replicas: 5
  selector:
    matchLabels:
      app: test
  template:
    metadata:
      labels:
        app: test
    spec:
      containers:
      - name: whoami
        image: jwilder/whoami
        ports:
        - containerPort: 8000
        lifecycle:
          preStop:
            exec:
              command: [
                "sh", "-c",
                # Introduce a delay to the shutdown sequence to wait for the
                # pod eviction event to propagate. Then, gracefully shutdown
                # nginx.
                "sleep 6 && /usr/sbin/nginx -s quit",
              ]