feat: Add headless service (#68)

Signed-off-by: Marc-AntoineRaymond <[email protected]>

Author: MarcAntoineRaymond

charts/zot/Chart.yaml

@@ -3,4 +3,4 @@ appVersion: v2.1.5
 description: A Helm chart for Kubernetes
 name: zot
 type: application
-version: 0.1.74
+version: 0.1.75

charts/zot/templates/headless-service.yaml

@@ -0,0 +1,23 @@
+{{- if and .Values.serviceHeadless .Values.serviceHeadless.enabled .Values.persistence -}}
+apiVersion: v1
+kind: Service
+metadata:
+  name: {{ include "zot.fullname" . }}-headless
+  namespace: {{ .Values.namespace | default .Release.Namespace }}
+  labels:
+    {{- include "zot.labels" . | nindent 4 }}
+{{- with .Values.serviceHeadless.annotations }}
+  annotations:
+{{ toYaml . | indent 4 }}
+{{- end }}
+spec:
+  type: ClusterIP
+  clusterIP: None
+  ports:
+    - port: {{ .Values.serviceHeadless.port }}
+      targetPort: zot
+      protocol: TCP
+      name: zot
+  selector:
+    {{- include "zot.selectorLabels" . | nindent 4 }}
+{{- end -}}

charts/zot/templates/statefulset.yaml

@@ -11,6 +11,9 @@ metadata:
     {{- toYaml . | nindent 4 }}
   {{- end }}
 spec:
+  {{- if and .Values.serviceHeadless .Values.serviceHeadless.enabled }}
+  serviceName: {{ include "zot.fullname" . }}-headless
+  {{- end }}
   replicas: {{ .Values.replicaCount }}
   selector:
     matchLabels:

charts/zot/unittests/statefulset_test.yaml

@@ -94,3 +94,13 @@ tests:
       - equal:
           path: spec.volumeClaimTemplates[0].metadata.name
           value: custom-pvc-pvc
+  
+  - it: should have an headless service when enabled
+    set:
+      persistence: true
+      serviceHeadless:
+        enabled: true
+    asserts:
+      - matchRegex:
+          path: spec.serviceName
+          pattern: .*-headless$

charts/zot/values.yaml

@@ -17,6 +17,13 @@ serviceAccount:
   # The name of the service account to use.
   # If not set and create is true, a name is generated using the fullname template
   name: ""
+serviceHeadless:
+  # Enable headless service, only for statefulset
+  enabled: false
+  # Headless service port
+  port: 5000
+  # Annotations to add to the headless service
+  annotations: {}
 service:
   type: NodePort
   port: 5000