date_multi.yaml

apiVersion: apps/v1
kind: Deployment
metadata:
  name: date
spec:
  replicas: 3
  selector:
    matchLabels:
      app: date
  strategy:
    type: Recreate
  template:
    metadata:
      labels:
        app: date
    spec:
      containers:
      - name: date
        image: busybox
        command: ["/bin/sh", "-c", "while true; do echo `date` by `hostname` >> /mnt/`hostname`; echo `date` by `hostname` >> /mnt/shared_file; sleep 1; done"]
        volumeMounts:
        - name: date-pv
          mountPath: "/mnt"
      volumes:
      - name: date-pv
        persistentVolumeClaim:
          claimName: cephfs-pvc
      affinity:
        nodeAffinity:
          requiredDuringSchedulingIgnoredDuringExecution:
            nodeSelectorTerms:
            - matchExpressions:
              - key: role
                operator: In
                values:
                - app
---
apiVersion: v1
kind: PersistentVolumeClaim
metadata:
  name: cephfs-pvc
spec:
  accessModes:
  - ReadWriteMany
  resources:
    requests:
      storage: 1Gi
  storageClassName: csi-cephfs