apiVersion: apps/v1
kind: DaemonSet
metadata:
  name: node-exporter
  labels:
    app: node-exporter
    tier: node-exporter
spec:
  selector:
    matchLabels:
      app: node-exporter  
  template:
    metadata:
      labels:
        app: node-exporter
    spec:
      containers:
      - name: app
        image: prom/node-exporter    
      tolerations:
      - operator: Exists