apiVersion: apps/v1
kind: Deployment
metadata:
  name: prometheus
  namespace: prometheus-ns
  labels:
    app: prometheus
spec:
  replicas: 1
  selector:
    matchLabels:
      app: prometheus
  template:
    metadata:
      labels:
        app: prometheus
    spec:
      initContainers:
      - name: prometheus-data-permission-fix
        image: busybox
        command: ["/bin/chmod","-R","777", "/prometheus"]
        volumeMounts:
        - name: prometheus-storage
          mountPath: /prometheus
      containers:
      - name: prometheus
        image: prom/prometheus:v2.27.1
        ports:
        - containerPort: 9090
        volumeMounts:
        - name: prometheus-storage
          mountPath: /prometheus
      volumes:
      - name: prometheus-storage
        persistentVolumeClaim:
          claimName: prometheus-pvc