[stable/prometheus] Add extraArgs and extraConfigmapMounts for config-reload (#4511)

* [stable/prometheus] Add extraArgs and extraConfigmapMounts for config-reload container

* Use full version in appVersion

stable/prometheus/Chart.yaml

@@ -1,6 +1,6 @@
 name: prometheus
-version: 6.0.0
-appVersion: 2.2
+version: 6.1.0
+appVersion: 2.2.1
 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

@@ -131,6 +131,8 @@ Parameter | Description | Default
 `configmapReload.image.repository` | configmap-reload container image repository | `jimmidyson/configmap-reload`
 `configmapReload.image.tag` | configmap-reload container image tag | `v0.1`
 `configmapReload.image.pullPolicy` | configmap-reload container image pull policy | `IfNotPresent`
+`configmapReload.extraArgs` | Additional configmap-reload container arguments | `{}`
+`configmapReload.extraConfigmapMounts` | Additional configmap-reload configMap mounts | `[]`
 `configmapReload.resources` | configmap-reload pod resource requests & limits | `{}`
 `initChownData.enabled`  | If false, don't reset data ownership at startup | true
 `initChownData.name` | init-chown-data container name | `init-chown-data`

stable/prometheus/templates/server-deployment.yaml

@@ -47,12 +47,20 @@ spec:
           args:
             - --volume-dir=/etc/config
             - --webhook-url=http://localhost:9090{{ .Values.server.prefixURL }}/-/reload
+          {{- range $key, $value := .Values.configmapReload.extraArgs }}
+            - --{{ $key }}={{ $value }}
+          {{- end }}
           resources:
 {{ toYaml .Values.configmapReload.resources | indent 12 }}
           volumeMounts:
             - name: config-volume
               mountPath: /etc/config
               readOnly: true
+          {{- range .Values.configmapReload.extraConfigmapMounts }}
+            - name: {{ $.Values.configmapReload.name }}-{{ .name }}
+              mountPath: {{ .mountPath }}
+              readOnly: {{ .readOnly }}
+          {{- end }}
 
         - name: {{ template "prometheus.name" . }}-{{ .Values.server.name }}
           image: "{{ .Values.server.image.repository }}:{{ .Values.server.image.tag }}"
@@ -100,7 +108,7 @@ spec:
               readOnly: {{ .readOnly }}
           {{- end }}
           {{- range .Values.server.extraConfigmapMounts }}
-            - name: {{ .name }}
+            - name: {{ $.Values.server.name }}-{{ .name }}
               mountPath: {{ .mountPath }}
               readOnly: {{ .readOnly }}
           {{- end }}
@@ -138,8 +146,13 @@ spec:
           hostPath:
             path: {{ .hostPath }}
       {{- end }}
+      {{- range .Values.configmapReload.extraConfigmapMounts }}
+        - name: {{ $.Values.configmapReload.name }}-{{ .name }}
+          configMap:
+            name: {{ .configMap }}
+      {{- end }}
       {{- range .Values.server.extraConfigmapMounts }}
-        - name: {{ .name }}
+        - name: {{ $.Values.server.name }}-{{ .name }}
           configMap:
             name: {{ .configMap }}
       {{- end }}
@@ -148,3 +161,8 @@ spec:
           secret:
             secretName: {{ .secretName }}
       {{- end }}
+      {{- range .Values.configmapReload.extraConfigmapMounts }}
+        - name: {{ .name }}
+          configMap:
+            name: {{ .configMap }}
+      {{- end }}

stable/prometheus/values.yaml

@@ -184,6 +184,19 @@ configmapReload:
     tag: v0.1
     pullPolicy: IfNotPresent
 
+  ## Additional configmap-reload container arguments
+  ##
+  extraArgs: {}
+
+  ## Additional configmap-reload mounts
+  ##
+  extraConfigmapMounts: []
+    # - name: prometheus-alerts
+    #   mountPath: /etc/alerts.d
+    #   configMap: prometheus-alerts
+    #   readOnly: true
+
+
   ## configmap-reload resource requests and limits
   ## Ref: http://kubernetes.io/docs/user-guide/compute-resources/
   ##