apiVersion: v1
kind: Service
metadata:
  name: web
spec:
  clusterIP: None
  selector:
    app: web
  ports:
    - name: http
      port: 80
      targetPort: 80
---
apiVersion: apps/v1
kind: StatefulSet
metadata:
  name: web
spec:
  serviceName: web
  replicas: 2
  selector:
    matchLabels:
      app: web
  template:
    metadata:
      labels:
        app: web
    spec:
      containers:
        - name: web
          image: busybox:1.36
          command:
            - sh
            - -c
            - |
              if [ ! -f /data/identity.txt ]; then hostname > /data/identity.txt; fi
              sleep 3600
          ports:
            - containerPort: 80
              name: http
          volumeMounts:
            - name: data
              mountPath: /data
  volumeClaimTemplates:
    - metadata:
        name: data
      spec:
        accessModes:
          - ReadWriteOnce
        storageClassName: standard
        resources:
          requests:
            storage: 1Gi