[common] feature add - ClusterIP for service manifest (#372)

* [common] feature add - ClusterIP for service manifest

* add helm docs

Author: ArshamTeymouri

charts/common/Chart.yaml

@@ -2,7 +2,7 @@ apiVersion: v2
 name: common
 description: A generic helm chart for Kubernetes
 type: application
-version: 0.11.1
+version: 0.12.0
 maintainers:
   - name: Parity
     url: https://github.com/paritytech/helm-charts

charts/common/README.md

@@ -69,8 +69,9 @@ This is intended behaviour. Make sure to run `git add -A` once again to stage ch
 | replicaCount | int | `1` | Number of replicas for the pod |
 | resources | object | `{}` | Resource limits & requests |
 | secrets | object | `{}` | Creates a secret resource The value must be base64 encoded |
-| service | object | `{"annotations":{},"ports":[],"sessionAffinity":"","type":"ClusterIP"}` | Creates a service resource |
+| service | object | `{"annotations":{},"clusterIP":"","ports":[],"sessionAffinity":"","type":"ClusterIP"}` | Creates a service resource |
 | service.annotations | object | `{}` | Annotations to add to the Service resource |
+| service.clusterIP | string | `""` | Headless service |
 | service.ports | list | `[]` | Ports to expose on the service |
 | service.sessionAffinity | string | `""` | Session Affinitiy type |
 | service.type | string | `"ClusterIP"` | Service type |

charts/common/templates/service.yaml

@@ -11,6 +11,9 @@ metadata:
   {{- end }}
 spec:
   type: {{ .Values.service.type }}
+  {{- if and .Values.service.clusterIP (eq .Values.service.type "ClusterIP") }}
+  clusterIP: {{ .Values.service.clusterIP }}
+  {{- end }}
   {{- if .Values.service.sessionAffinity }}
   sessionAffinity: {{ .Values.service.sessionAffinity }}
   {{- end }}

charts/common/values.yaml

@@ -112,6 +112,8 @@ service:
   annotations: {}
   # -- Service type
   type: ClusterIP
+  # -- Headless service
+  clusterIP: ""
   # -- Session Affinitiy type
   sessionAffinity: ""
   # -- Ports to expose on the service