Helm daemonset yaml template for pre-pulling images.

daemonset.yaml

apiVersion: apps/v1beta2
kind: DaemonSet
metadata:
  name: {{ .Release.Name }}-prepull
  labels:
    app: {{ template "name" . }}
    env: {{ .Values.environment }}
    chart: {{ .Chart.Name }}-{{ .Chart.Version | replace "+" "_" }}
    release: {{ .Release.Name }}
    heritage: {{ .Release.Service }}
spec:
  selector:
    matchLabels:
      name: {{ .Release.Name }}-prepull 
  template:
    metadata:
      labels:
        name: {{ .Release.Name }}-prepull 
        release: {{ .Release.Name }}
        env: {{ .Values.environment }}
    spec:
      imagePullSecrets:
        - name: {{ .Values.image.imagePullSecret }}
      initContainers:
      - name: prepull
        image: {{ .Values.image.repository}}:{{ .Values.image.tag }}
        command: ["sh", "-c", "echo 'Pre-Pull of {{ .Values.image.repository}}:{{ .Values.image.tag }} successful'"]
        volumeMounts:
        - name: docker
          mountPath: /var/run
      volumes:
      - name: docker
        hostPath:
          path: /var/run
      containers:
      - name: pause
        image: gcr.io/google_containers/pause
      {{- if .Values.toleration }}
      nodeSelector:
        kops.k8s.io/instancegroup: {{ .Values.toleration.name }}
      tolerations:
        - key: "{{ .Values.toleration.name }}"
          operator: "Exists"
          effect: "{{ .Values.toleration.type }}"
      {{- end }}

Hi mrballcb,
I have a silly question: How to use this yaml file? Tried helm install my-chart -f daemonset.yaml but there's always the error Error: failed to parse daemonsets.yaml: error converting YAML to JSON: yaml: line 3: did not find expected key.