[stable/mcrouter] create a template for api version

stable/mcrouter/Chart.yaml

@@ -1,7 +1,7 @@
 apiVersion: v1
 name: mcrouter
 home: https://github.com/facebook/mcrouter
-version: 1.0.2
+version: 1.0.3
 appVersion: 0.36.0
 description: Mcrouter is a memcached protocol router for scaling memcached deployments.
 sources:

stable/mcrouter/templates/_helpers.tpl

@@ -14,3 +14,25 @@ We truncate at 63 chars because some Kubernetes name fields are limited to this
 {{- $name := default .Chart.Name .Values.nameOverride -}}
 {{- printf "%s-%s" .Release.Name $name | trunc 63 | trimSuffix "-" -}}
 {{- end -}}
+
+{{/*
+Return the appropriate apiVersion for daemonset.
+*/}}
+{{- define "daemonset.apiVersion" -}}
+{{- if semverCompare "<1.9-0" .Capabilities.KubeVersion.GitVersion -}}
+{{- print "extensions/v1beta1" -}}
+{{- else if semverCompare "^1.9-0" .Capabilities.KubeVersion.GitVersion -}}
+{{- print "apps/v1" -}}
+{{- end -}}
+{{- end -}}
+
+{{/*
+Return the appropriate apiVersion for statefulset.
+*/}}
+{{- define "statefulset.apiVersion" -}}
+{{- if semverCompare "<1.9-0" .Capabilities.KubeVersion.GitVersion -}}
+{{- print "extensions/v1beta1" -}}
+{{- else if semverCompare "^1.9-0" .Capabilities.KubeVersion.GitVersion -}}
+{{- print "apps/v1" -}}
+{{- end -}}
+{{- end -}}

stable/mcrouter/templates/daemonset.yaml

@@ -1,5 +1,5 @@
 {{- if eq .Values.controller "daemonset" }}
-apiVersion: extensions/v1beta1
+apiVersion: {{ template "daemonset.apiVersion" . }}
 kind: DaemonSet
 metadata:
   name: {{ template "fullname" . }}
@@ -10,6 +10,9 @@ metadata:
   annotations:
     checksum/config: {{ include (print $.Template.BasePath "/configmap.yaml") . | sha256sum }}
 spec:
+  selector:
+    matchLabels:
+      app: {{ template "fullname" . }}
   template:
     metadata:
       labels:

stable/mcrouter/templates/statefulset.yaml

@@ -1,5 +1,5 @@
 {{- if eq .Values.controller "statefulset" }}
-apiVersion: apps/v1beta1
+apiVersion: {{ template "statefulset.apiVersion" . }}
 kind: StatefulSet
 metadata:
   name: {{ template "fullname" . }}