helm: add omitHelmLabels so that people can generate static manifests

Signed-off-by: Maël Valais <[email protected]>

.gitignore

@@ -6,6 +6,7 @@
 *.dylib
 _bin
 bin
+dist/
 
 # Test binary, build with `go test -c`
 *.test

deploy/charts/openshift-routes/README.md

@@ -216,5 +216,12 @@ Create a ServiceMonitor to add openshift-routes to Prometheus.
 > ```
 
 The interval to scrape metrics.
+#### **omitHelmLabels** ~ `bool`
+> Default value:
+> ```yaml
+> false
+> ```
+
+Omit Helm-specific labels. This is useful when generating a static manifest with `helm template`.
 
 <!-- /AUTO-GENERATED -->

deploy/charts/openshift-routes/templates/_helpers.tpl

@@ -48,18 +48,27 @@ https://github.com/helm/helm/issues/5358.
 Common labels
 */}}
 {{- define "openshift-routes.labels" -}}
-helm.sh/chart: {{ include "openshift-routes.chart" . }}
-{{ include "openshift-routes.selectorLabels" . }}
-app.kubernetes.io/component: controller
+{{/*
+You can generate generate a static manifest free of Helm-specific labels by
+using `--set omitHelmLabels=true`.
+*/}}
+{{- include "openshift-routes.selectorLabels" . }}
+{{- if not .Values.omitHelmLabels }}
 app.kubernetes.io/managed-by: {{ .Release.Service }}
+helm.sh/chart: {{ include "openshift-routes.chart" . }}
+{{- end }}
 {{- end }}
 
 {{/*
 Selector labels
 */}}
 {{- define "openshift-routes.selectorLabels" -}}
 app.kubernetes.io/name: {{ include "openshift-routes.name" . }}
+app.kubernetes.io/component: controller
+app.kubernetes.io/version: {{ .Chart.AppVersion }}
+{{- if not .Values.omitHelmLabels }}
 app.kubernetes.io/instance: {{ .Release.Name }}
+{{- end}}
 {{- end }}
 
 {{/*

deploy/charts/openshift-routes/values.schema.json

@@ -33,6 +33,9 @@
         "nodeSelector": {
           "$ref": "#/$defs/helm-values.nodeSelector"
         },
+        "omitHelmLabels": {
+          "$ref": "#/$defs/helm-values.omitHelmLabels"
+        },
         "podAnnotations": {
           "$ref": "#/$defs/helm-values.podAnnotations"
         },
@@ -180,6 +183,11 @@
       "description": "The nodeSelector on Pods tells Kubernetes to schedule Pods on the nodes with matching labels. For more information, see [Assigning Pods to Nodes](https://kubernetes.io/docs/concepts/scheduling-eviction/assign-pod-node/).\n\nThis default ensures that Pods are only scheduled to Linux nodes. It prevents Pods being scheduled to Windows nodes in a mixed OS cluster.",
       "type": "object"
     },
+    "helm-values.omitHelmLabels": {
+      "default": false,
+      "description": "Omit Helm-specific labels. This is useful when generating a static manifest with `helm template`.",
+      "type": "boolean"
+    },
     "helm-values.podAnnotations": {
       "default": {},
       "description": "Annotations to add to the openshift-routes pod.",

deploy/charts/openshift-routes/values.yaml

@@ -84,7 +84,7 @@ securityContext:
   allowPrivilegeEscalation: false
   capabilities:
     drop:
-    - ALL
+      - ALL
   readOnlyRootFilesystem: true
 
 # Kubernetes pod resources
@@ -143,3 +143,7 @@ metrics:
 
     # The interval to scrape metrics.
     interval: 60s
+
+# Omit Helm-specific labels. This is useful when generating a static manifest
+# with `helm template`.
+omitHelmLabels: false