[stable/grafana] move datasource provider to containers (#20985)

Signed-off-by: tarokkk <gubasanyi@gmail.com>

stable/grafana/Chart.yaml

@@ -1,6 +1,6 @@
 apiVersion: v1
 name: grafana
-version: 5.0.1
+version: 5.0.2
 appVersion: 6.6.1
 kubeVersion: "^1.8.0-0"
 description: The leading tool for querying and visualizing time series and metrics.

stable/grafana/templates/_pod.tpl

@@ -13,7 +13,7 @@ securityContext:
 {{- if .Values.priorityClassName }}
 priorityClassName: {{ .Values.priorityClassName }}
 {{- end }}
-{{- if ( or .Values.persistence.enabled .Values.dashboards .Values.sidecar.datasources.enabled .Values.extraInitContainers) }}
+{{- if ( or .Values.persistence.enabled .Values.dashboards  .Values.extraInitContainers) }}
 initContainers:
 {{- end }}
 {{- if ( and .Values.persistence.enabled .Values.initChownData.enabled ) }}
@@ -58,33 +58,6 @@ initContainers:
         readOnly: {{ .readOnly }}
     {{- end }}
 {{- end }}
-{{- if .Values.sidecar.datasources.enabled }}
-  - name: {{ template "grafana.name" . }}-sc-datasources
-    image: "{{ .Values.sidecar.image }}"
-    imagePullPolicy: {{ .Values.sidecar.imagePullPolicy }}
-    env:
-      - name: METHOD
-        value: LIST
-      - name: LABEL
-        value: "{{ .Values.sidecar.datasources.label }}"
-      - name: FOLDER
-        value: "/etc/grafana/provisioning/datasources"
-      - name: RESOURCE
-        value: "both"
-      {{- if .Values.sidecar.datasources.searchNamespace }}
-      - name: NAMESPACE
-        value: "{{ .Values.sidecar.datasources.searchNamespace }}"
-      {{- end }}
-      {{- if .Values.sidecar.skipTlsVerify }}
-      - name: SKIP_TLS_VERIFY
-        value: "{{ .Values.sidecar.skipTlsVerify }}"
-      {{- end }}
-    resources:
-{{ toYaml .Values.sidecar.resources | indent 6 }}
-    volumeMounts:
-      - name: sc-datasources-volume
-        mountPath: "/etc/grafana/provisioning/datasources"
-{{- end}}
 {{- if .Values.extraInitContainers }}
 {{ toYaml .Values.extraInitContainers | indent 2 }}
 {{- end }}
@@ -121,6 +94,33 @@ containers:
     volumeMounts:
       - name: sc-dashboard-volume
         mountPath: {{ .Values.sidecar.dashboards.folder | quote }}
+{{- end}}
+{{- if .Values.sidecar.datasources.enabled }}
+  - name: {{ template "grafana.name" . }}-sc-datasources
+    image: "{{ .Values.sidecar.image }}"
+    imagePullPolicy: {{ .Values.sidecar.imagePullPolicy }}
+    env:
+      - name: METHOD
+        value: {{ .Values.sidecar.datasources.watchMethod }}
+      - name: LABEL
+        value: "{{ .Values.sidecar.datasources.label }}"
+      - name: FOLDER
+        value: "/etc/grafana/provisioning/datasources"
+      - name: RESOURCE
+        value: "both"
+      {{- if .Values.sidecar.datasources.searchNamespace }}
+      - name: NAMESPACE
+        value: "{{ .Values.sidecar.datasources.searchNamespace }}"
+      {{- end }}
+      {{- if .Values.sidecar.skipTlsVerify }}
+      - name: SKIP_TLS_VERIFY
+        value: "{{ .Values.sidecar.skipTlsVerify }}"
+      {{- end }}
+    resources:
+{{ toYaml .Values.sidecar.resources | indent 6 }}
+    volumeMounts:
+      - name: sc-datasources-volume
+        mountPath: "/etc/grafana/provisioning/datasources"
 {{- end}}
   - name: {{ .Chart.Name }}
     image: "{{ .Values.image.repository }}:{{ .Values.image.tag }}"

stable/grafana/values.yaml

@@ -471,6 +471,8 @@ sidecar:
       allowUiUpdates: false
   datasources:
     enabled: false
+    ## Method to use to detect ConfigMap changes. With WATCH the sidecar will do a WATCH requests, with SLEEP it will list all ConfigMaps, then sleep for 60 seconds.
+    watchMethod: WATCH
     # label that the configmaps with datasources are marked with
     label: grafana_datasource
     # If specified, the sidecar will search for datasource config-maps inside this namespace.