Kube-State-Metrics: Change default image used

This changes the default image for kube-state-metrics to use the
bitnami image instead of the coreos image. This allows us to
override the image entrypoint, as the Alpine based image used
previously did not easily allow us to do so. Adding this also
makes creating a common prometheus exporter deployment template
easier, as it reduces the functional differences between exporter
charts and templates

Change-Id: I6c4aac36f563fcb15f52640bc6f9913b45b4358a

prometheus-kube-state-metrics/templates/bin/_kube-state-metrics.sh.tpl

@@ -0,0 +1,20 @@
+#!/bin/bash
+{{/*
+Copyright 2017 The Openstack-Helm Authors.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+   http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/}}
+
+set -ex
+
+exec kube-state-metrics --port=8080 --telemetry-port=8081

prometheus-kube-state-metrics/templates/configmap-bin.yaml

@@ -20,8 +20,10 @@ limitations under the License.
 apiVersion: v1
 kind: ConfigMap
 metadata:
-  name: kube-metrics-bin
+  name: kube-state-metrics-bin
 data:
+  kube-state-metrics.sh: |
+{{ tuple "bin/_kube-state-metrics.sh.tpl" . | include "helm-toolkit.utils.template" | indent 4 }}
   image-repo-sync.sh: |
 {{- include "helm-toolkit.scripts.image_repo_sync" . | indent 4 }}
 {{- end }}

prometheus-kube-state-metrics/templates/deployment.yaml

@@ -100,7 +100,19 @@ spec:
         - name: kube-state-metrics
 {{ tuple $envAll "kube_state_metrics" | include "helm-toolkit.snippets.image" | indent 10 }}
 {{ tuple $envAll $envAll.Values.pod.resources.kube_state_metrics | include "helm-toolkit.snippets.kubernetes_resources" | indent 10 }}
+          command:
+            - /tmp/kube-state-metrics.sh
           ports:
             - name: metrics
               containerPort: {{ tuple "kube_state_metrics" "internal" "http" . | include "helm-toolkit.endpoints.endpoint_port_lookup" }}
+          volumeMounts:
+            - name: kube-state-metrics-bin
+              mountPath: /tmp/kube-state-metrics.sh
+              subPath: kube-state-metrics.sh
+              readOnly: true
+      volumes:
+        - name: kube-state-metrics-bin
+          configMap:
+            name: kube-state-metrics-bin
+            defaultMode: 0555
 {{- end }}

prometheus-kube-state-metrics/values.yaml

@@ -18,7 +18,7 @@
 
 images:
   tags:
-    kube_state_metrics: quay.io/coreos/kube-state-metrics:v1.2.0
+    kube_state_metrics: docker.io/bitnami/kube-state-metrics:1.3.1
     dep_check: quay.io/stackanetes/kubernetes-entrypoint:v0.3.1
     image_repo_sync: docker.io/docker:17.07.0
   pull_policy: IfNotPresent