feat(chart): allow namespace override in chart (#395)

This commit will allow to override the namespace metadata field
of the provided Kubernetes objects by the Chart. It is taken into
account the scope of those, meaning if they are namespaced or not.

Signed-off-by: Alberto Ruiz <alberto.ruizm@outlook.com>
Co-authored-by: Eike Lenz <e.lenz@mittwald.de>

Author: NR4l3rt0

deploy/helm-chart/kubernetes-replicator/templates/_helpers.tpl

@@ -31,6 +31,13 @@ Create chart name and version as used by the chart label.
 {{- printf "%s-%s" .Chart.Name .Chart.Version | replace "+" "_" | trunc 63 | trimSuffix "-" -}}
 {{- end -}}
 
+{{/*
+Create namespace name using the value of the release object or custom override.
+*/}}
+{{- define "kubernetes-replicator.namespace" -}}
+{{- default .Release.Namespace .Values.namespaceOverride -}}
+{{- end -}}
+
 {{/*
 Common labels
 */}}

deploy/helm-chart/kubernetes-replicator/templates/deployment.yaml

@@ -2,6 +2,7 @@ apiVersion: apps/v1
 kind: Deployment
 metadata:
   name: {{ include "kubernetes-replicator.fullname" . }}
+  namespace: {{ include "kubernetes-replicator.namespace" . }}
   labels:
     {{- include "kubernetes-replicator.labels" . | nindent 4 }}
     {{- if .Values.labels }}

deploy/helm-chart/kubernetes-replicator/templates/rbac.yaml

@@ -3,6 +3,7 @@ apiVersion: v1
 kind: ServiceAccount
 metadata:
   name: {{ include "kubernetes-replicator.serviceAccountName" . }}
+  namespace: {{ include "kubernetes-replicator.namespace" . }}
   labels:
     {{- include "kubernetes-replicator.labels" . | nindent 4 }}
   {{- with .Values.serviceAccount.annotations }}
@@ -71,5 +72,5 @@ roleRef:
 subjects:
   - kind: ServiceAccount
     name: {{ include "kubernetes-replicator.serviceAccountName" . }}
-    namespace: {{ .Release.Namespace | quote }}
+    namespace: {{ include "kubernetes-replicator.namespace" . }}
 {{- end -}}

deploy/helm-chart/kubernetes-replicator/templates/verticalpodautoscaler.yaml

@@ -3,6 +3,7 @@ apiVersion: autoscaling.k8s.io/v1
 kind: VerticalPodAutoscaler
 metadata:
   name: {{ include "kubernetes-replicator.fullname" . }}
+  namespace: {{ include "kubernetes-replicator.namespace" . }}
   labels:
     {{- include "kubernetes-replicator.labels" . | nindent 4 }}
 spec:

deploy/helm-chart/kubernetes-replicator/values.yaml

@@ -5,6 +5,7 @@ image:
 imagePullSecrets: []
 nameOverride: ""
 fullnameOverride: ""
+namespaceOverride: ""
 grantClusterAdmin: false
 automountServiceAccountToken: true
 # args: