[stable/coredns] Switch labels to best practices (#13310)

https://helm.sh/docs/chart_best_practices/#standard-labels
https://kubernetes.io/docs/concepts/overview/working-with-objects/common-labels/#labels
Signed-off-by: Manuel Rüger <manuel@rueg.eu>

stable/coredns/Chart.yaml

@@ -1,6 +1,6 @@
 name: coredns
-version: 1.5.1
-appVersion: 1.5.1
+version: 1.5.2
+appVersion: 1.5.0
 description: CoreDNS is a DNS server that chains plugins and provides Kubernetes DNS Services
 keywords:
 - coredns

stable/coredns/templates/clusterrole.yaml

@@ -4,15 +4,15 @@ kind: ClusterRole
 metadata:
   name: {{ template "coredns.fullname" . }}
   labels:
-    heritage: {{ .Release.Service | quote }}
-    release: {{ .Release.Name | quote }}
-    chart: "{{ .Chart.Name }}-{{ .Chart.Version | replace "+" "_" }}"
+    app.kubernetes.io/managed-by: {{ .Release.Service | quote }}
+    app.kubernetes.io/instance: {{ .Release.Name | quote }}
+    helm.sh/chart: "{{ .Chart.Name }}-{{ .Chart.Version | replace "+" "_" }}"
     {{- if .Values.isClusterService }}
     k8s-app: {{ .Chart.Name | quote }}
     kubernetes.io/cluster-service: "true"
     kubernetes.io/name: "CoreDNS"
     {{- end }}
-    app: {{ template "coredns.name" . }}
+    app.kubernetes.io/name: {{ template "coredns.name" . }}
 rules:
 - apiGroups:
   - ""

stable/coredns/templates/clusterrolebinding.yaml

@@ -4,15 +4,15 @@ kind: ClusterRoleBinding
 metadata:
   name: {{ template "coredns.fullname" . }}
   labels:
-    heritage: {{ .Release.Service | quote }}
-    release: {{ .Release.Name | quote }}
-    chart: "{{ .Chart.Name }}-{{ .Chart.Version | replace "+" "_" }}"
+    app.kubernetes.io/managed-by: {{ .Release.Service | quote }}
+    app.kubernetes.io/instance: {{ .Release.Name | quote }}
+    helm.sh/chart: "{{ .Chart.Name }}-{{ .Chart.Version | replace "+" "_" }}"
     {{- if .Values.isClusterService }}
     k8s-app: {{ .Chart.Name | quote }}
     kubernetes.io/cluster-service: "true"
     kubernetes.io/name: "CoreDNS"
     {{- end }}
-    app: {{ template "coredns.name" . }}
+    app.kubernetes.io/name: {{ template "coredns.name" . }}
 roleRef:
   apiGroup: rbac.authorization.k8s.io
   kind: ClusterRole

stable/coredns/templates/configmap.yaml

@@ -3,15 +3,15 @@ kind: ConfigMap
 metadata:
   name: {{ template "coredns.fullname" . }}
   labels:
-    heritage: {{ .Release.Service | quote }}
-    release: {{ .Release.Name | quote }}
-    chart: "{{ .Chart.Name }}-{{ .Chart.Version | replace "+" "_" }}"
+    app.kubernetes.io/managed-by: {{ .Release.Service | quote }}
+    app.kubernetes.io/instance: {{ .Release.Name | quote }}
+    helm.sh/chart: "{{ .Chart.Name }}-{{ .Chart.Version | replace "+" "_" }}"
     {{- if .Values.isClusterService }}
     k8s-app: {{ .Chart.Name | quote }}
     kubernetes.io/cluster-service: "true"
     kubernetes.io/name: "CoreDNS"
     {{- end }}
-    app: {{ template "coredns.name" . }}
+    app.kubernetes.io/name: {{ template "coredns.name" . }}
 data:
   Corefile: |-
     {{ range .Values.servers }}

stable/coredns/templates/deployment.yaml

@@ -3,32 +3,32 @@ kind: Deployment
 metadata:
   name: {{ template "coredns.fullname" . }}
   labels:
-    heritage: {{ .Release.Service | quote }}
-    release: {{ .Release.Name | quote }}
-    chart: "{{ .Chart.Name }}-{{ .Chart.Version | replace "+" "_" }}"
+    app.kubernetes.io/managed-by: {{ .Release.Service | quote }}
+    app.kubernetes.io/instance: {{ .Release.Name | quote }}
+    helm.sh/chart: "{{ .Chart.Name }}-{{ .Chart.Version | replace "+" "_" }}"
     {{- if .Values.isClusterService }}
     k8s-app: {{ .Chart.Name | quote }}
     kubernetes.io/cluster-service: "true"
     kubernetes.io/name: "CoreDNS"
     {{- end }}
-    app: {{ template "coredns.name" . }}
+    app.kubernetes.io/name: {{ template "coredns.name" . }}
 spec:
   replicas: {{ .Values.replicaCount }}
   selector:
     matchLabels:
-      release: {{ .Release.Name | quote }}
+      app.kubernetes.io/instance: {{ .Release.Name | quote }}
       {{- if .Values.isClusterService }}
       k8s-app: {{ .Chart.Name | quote }}
       {{- end }}
-      app: {{ template "coredns.name" . }}
+      app.kubernetes.io/name: {{ template "coredns.name" . }}
   template:
     metadata:
       labels:
         {{- if .Values.isClusterService }}
         k8s-app: {{ .Chart.Name | quote }}
         {{- end }}
-        app: {{ template "coredns.name" . }}
-        release: {{ .Release.Name | quote }}
+        app.kubernetes.io/name: {{ template "coredns.name" . }}
+        app.kubernetes.io/instance: {{ .Release.Name | quote }}
       annotations:
         checksum/config: {{ include (print $.Template.BasePath "/configmap.yaml") . | sha256sum }}
         {{- if .Values.isClusterService }}

stable/coredns/templates/podsecuritypolicy.yaml

@@ -4,15 +4,15 @@ kind: PodSecurityPolicy
 metadata:
   name: {{ template "coredns.fullname" . }}
   labels:
-    heritage: {{ .Release.Service | quote }}
-    release: {{ .Release.Name | quote }}
-    chart: "{{ .Chart.Name }}-{{ .Chart.Version | replace "+" "_" }}"
+    app.kubernetes.io/managed-by: {{ .Release.Service | quote }}
+    app.kubernetes.io/instance: {{ .Release.Name | quote }}
+    helm.sh/chart: "{{ .Chart.Name }}-{{ .Chart.Version | replace "+" "_" }}"
     {{- if .Values.isClusterService }}
     k8s-app: {{ .Chart.Name | quote }}
     kubernetes.io/cluster-service: "true"
     kubernetes.io/name: "CoreDNS"
     {{- else }}
-    app: {{ template "coredns.name" . }}
+    app.kubernetes.io/name: {{ template "coredns.name" . }}
     {{- end }}
 spec:
   privileged: false

stable/coredns/templates/service.yaml

@@ -3,24 +3,24 @@ kind: Service
 metadata:
   name: {{ template "coredns.fullname" . }}
   labels:
-    heritage: {{ .Release.Service | quote }}
-    release: {{ .Release.Name | quote }}
-    chart: "{{ .Chart.Name }}-{{ .Chart.Version | replace "+" "_" }}"
+    app.kubernetes.io/managed-by: {{ .Release.Service | quote }}
+    app.kubernetes.io/instance: {{ .Release.Name | quote }}
+    helm.sh/chart: "{{ .Chart.Name }}-{{ .Chart.Version | replace "+" "_" }}"
     {{- if .Values.isClusterService }}
     k8s-app: {{ .Chart.Name | quote }}
     kubernetes.io/cluster-service: "true"
     kubernetes.io/name: "CoreDNS"
     {{- end }}
-    app: {{ template "coredns.name" . }}
+    app.kubernetes.io/name: {{ template "coredns.name" . }}
   annotations:
 {{ toYaml .Values.service.annotations | indent 4 }}
 spec:
   selector:
-    release: {{ .Release.Name | quote }}
+    app.kubernetes.io/instance: {{ .Release.Name | quote }}
     {{- if .Values.isClusterService }}
     k8s-app: {{ .Chart.Name | quote }}
     {{- end }}
-    app: {{ template "coredns.name" . }}
+    app.kubernetes.io/name: {{ template "coredns.name" . }}
   {{- if .Values.service.clusterIP }}
   clusterIP: {{ .Values.service.clusterIP }}
   {{- end }}

stable/coredns/templates/serviceaccount.yaml

@@ -4,13 +4,13 @@ kind: ServiceAccount
 metadata:
   name: {{ template "coredns.serviceAccountName" . }}
   labels:
-    heritage: {{ .Release.Service | quote }}
-    release: {{ .Release.Name | quote }}
-    chart: "{{ .Chart.Name }}-{{ .Chart.Version | replace "+" "_" }}"
+    app.kubernetes.io/managed-by: {{ .Release.Service | quote }}
+    app.kubernetes.io/instance: {{ .Release.Name | quote }}
+    helm.sh/chart: "{{ .Chart.Name }}-{{ .Chart.Version | replace "+" "_" }}"
     {{- if .Values.isClusterService }}
     k8s-app: {{ .Chart.Name | quote }}
     kubernetes.io/cluster-service: "true"
     kubernetes.io/name: "CoreDNS"
     {{- end }}
-    app: {{ template "coredns.name" . }}
+    app.kubernetes.io/name: {{ template "coredns.name" . }}
 {{- end }}