Add support for labels on services

elasticsearch/README.md

@@ -89,7 +89,9 @@ helm install --name elasticsearch elastic/elasticsearch --set imageTag=7.4.1
 | `podManagementPolicy`         | By default Kubernetes [deploys statefulsets serially](https://kubernetes.io/docs/concepts/workloads/controllers/statefulset/#pod-management-policies). This deploys them in parallel so that they can discover eachother                                                                                                   | `Parallel`                                                                                                                |
 | `protocol`                    | The protocol that will be used for the readinessProbe. Change this to `https` if you have `xpack.security.http.ssl.enabled` set                                                                                                                                                                                            | `http`                                                                                                                    |
 | `httpPort`                    | The http port that Kubernetes will use for the healthchecks and the service. If you change this you will also need to set [http.port](https://www.elastic.co/guide/en/elasticsearch/reference/current/modules-http.html#_settings) in `extraEnvs`                                                                          | `9200`                                                                                                                    |
-| `transportPort`               | The transport port that Kubernetes will use for the service. If you change this you will also need to set [transport port configuration](https://www.elastic.co/guide/en/elasticsearch/reference/current/modules-transport.html#_transport_settings) in `extraEnvs`                                                        | `9300`                                                                                                                    |
+| `transportPort`               | The transport port that Kubernetes will use for the service. If you change this you will also need to set [transport port configuration](https://www.elastic.co/guide/en/elasticsearch/reference/current/modules-transport.html#_transport_settings) in `extraEnvs`                                                        | `9300`                                                                                                                    |                     
+| `service.labels`              | Labels to be added to non-headless service                                                                                                                                                                                                                                                                                 | `{}`                                                                                                                      |
+| `service.labelsHeadless`      | Labels to be added to headless service                                                                                                                                                                                                                                                                                     | `{}`                                                                                                                      |
 | `service.type`                | Type of elasticsearch service. [Service Types](https://kubernetes.io/docs/concepts/services-networking/service/#publishing-services-service-types)                                                                                                                                                                         | `ClusterIP`                                                                                                               |
 | `service.nodePort`            | Custom [nodePort](https://kubernetes.io/docs/concepts/services-networking/service/#nodeport) port that can be set if you are using `service.type: nodePort`.                                                                                                                                                               | ``                                                                                                                        |
 | `service.annotations`         | Annotations that Kubernetes will use for the service. This will configure load balancer if `service.type` is `LoadBalancer` [Annotations](https://kubernetes.io/docs/concepts/services-networking/service/#ssl-support-on-aws)                                                                                             | `{}`                                                                                                                      |

elasticsearch/templates/service.yaml

@@ -8,6 +8,9 @@ metadata:
     release: {{ .Release.Name | quote }}
     chart: "{{ .Chart.Name }}"
     app: "{{ template "uname" . }}"
+{{- if .Values.service.labels }}
+{{ toYaml .Values.service.labels | indent 4}}
+{{- end }}
   annotations:
 {{ toYaml .Values.service.annotations | indent 4 }}
 spec:
@@ -37,6 +40,9 @@ metadata:
     release: {{ .Release.Name | quote }}
     chart: "{{ .Chart.Name }}"
     app: "{{ template "uname" . }}"
+{{- if .Values.service.labelsHeadless }}
+{{ toYaml .Values.service.labelsHeadless | indent 4 }}
+{{- end }}
   annotations:
     service.alpha.kubernetes.io/tolerate-unready-endpoints: "true"
 spec:

elasticsearch/tests/elasticsearch_test.py

@@ -659,6 +659,43 @@ def test_adding_a_nodePort():
 
     assert r['service'][uname]['spec']['ports'][0]['nodePort'] == 30001
 
+
+def test_adding_a_label_on_non_headless_service():
+    config = ''
+
+    r = helm_template(config)
+
+    assert 'label1' not in r['service'][uname]['metadata']['labels']
+
+    config = '''
+    service:
+      labels:
+        label1: value1
+    '''
+
+    r = helm_template(config)
+
+    assert r['service'][uname]['metadata']['labels']['label1'] == 'value1'
+
+
+
+def test_adding_a_label_on_headless_service():
+    config = ''
+
+    r = helm_template(config)
+
+    assert 'label1' not in r['service'][uname + '-headless']['metadata']['labels']
+
+    config = '''
+    service:
+      labelsHeadless:
+        label1: value1
+    '''
+
+    r = helm_template(config)
+
+    assert r['service'][uname + '-headless']['metadata']['labels']['label1'] == 'value1'
+
 def test_master_termination_fixed_enabled():
     config = ''
 

elasticsearch/values.yaml

@@ -151,6 +151,8 @@ httpPort: 9200
 transportPort: 9300
 
 service:
+  labels: {}
+  labelsHeadless: {}
   type: ClusterIP
   nodePort: ""
   annotations: {}