exposing the init container image in the config to allow the user from overriding it (#3698)

stable/prometheus/Chart.yaml

@@ -1,5 +1,5 @@
 name: prometheus
-version: 5.1.4
+version: 5.1.5
 description: Prometheus is a monitoring system and time series database.
 home: https://prometheus.io/
 icon: https://raw.githubusercontent.com/prometheus/prometheus.github.io/master/assets/prometheus_logo-cb55bb5c346.png

stable/prometheus/README.md

@@ -132,6 +132,11 @@ Parameter | Description | Default
 `configmapReload.image.tag` | configmap-reload container image tag | `v0.1`
 `configmapReload.image.pullPolicy` | configmap-reload container image pull policy | `IfNotPresent`
 `configmapReload.resources` | configmap-reload pod resource requests & limits | `{}`
+`initChownData.name` | init-chown-data container name | `init-chown-data`
+`initChownData.image.repository` | init-chown-data container image repository | `busybox`
+`initChownData.image.tag` | init-chown-data container image tag | `latest`
+`initChownData.image.pullPolicy` | init-chown-data container image pull policy | `IfNotPresent`
+`initChownData.resources` | init-chown-data pod resource requests & limits | `{}`
 `kubeStateMetrics.enabled` | If true, create kube-state-metrics | `true`
 `kubeStateMetrics.name` | kube-state-metrics container name | `kube-state-metrics`
 `kubeStateMetrics.image.repository` | kube-state-metrics container image repository| `k8s.gcr.io/kube-state-metrics`

stable/prometheus/templates/server-deployment.yaml

@@ -27,8 +27,11 @@ spec:
     spec:
       serviceAccountName: {{ if .Values.rbac.create }}{{ template "prometheus.server.fullname" . }}{{ else }}"{{ .Values.server.serviceAccountName }}"{{ end }}
       initContainers:
-      - name: "init-chown-data"
-        image: "busybox"
+      - name: "{{ .Values.initChownData.name }}"
+        image: "{{ .Values.initChownData.image.repository }}:{{ .Values.initChownData.image.tag }}"
+        imagePullPolicy: "{{ .Values.initChownData.image.pullPolicy }}"
+        resources:
+{{ toYaml .Values.initChownData.resources | indent 12 }}
         # 65534 is the nobody user that prometheus uses.
         command: ["chown", "-R", "65534:65534", "{{ .Values.server.persistentVolume.mountPath }}"]
         volumeMounts:

stable/prometheus/values.yaml

@@ -188,6 +188,23 @@ configmapReload:
   ##
   resources: {}
 
+initChownData:
+  ## initChownData container name
+  ##
+  name: init-chown-data
+
+  ## initChownData container image
+  ##
+  image:
+    repository: busybox
+    tag: latest
+    pullPolicy: IfNotPresent
+
+  ## initChownData resource requests and limits
+  ## Ref: http://kubernetes.io/docs/user-guide/compute-resources/
+  ##
+  resources: {}
+
 kubeStateMetrics:
   ## If false, kube-state-metrics will not be installed
   ##