Chart: Add controller.metrics.service.enabled. (#12056)

Author: LeMyst

charts/ingress-nginx/README.md

@@ -372,6 +372,7 @@ As of version `1.26.0` of this chart, by simply not providing any clusterIP valu
 | controller.metrics.prometheusRule.enabled | bool | `false` |  |
 | controller.metrics.prometheusRule.rules | list | `[]` |  |
 | controller.metrics.service.annotations | object | `{}` |  |
+| controller.metrics.service.enabled | bool | `true` | Enable the metrics service or not. |
 | controller.metrics.service.externalIPs | list | `[]` | List of IP addresses at which the stats-exporter service is available # Ref: https://kubernetes.io/docs/concepts/services-networking/service/#external-ips # |
 | controller.metrics.service.labels | object | `{}` | Labels to be added to the metrics service resource |
 | controller.metrics.service.loadBalancerSourceRanges | list | `[]` |  |

charts/ingress-nginx/templates/controller-service-metrics.yaml

@@ -1,4 +1,4 @@
-{{- if .Values.controller.metrics.enabled -}}
+{{- if and .Values.controller.metrics.enabled .Values.controller.metrics.service.enabled -}}
 apiVersion: v1
 kind: Service
 metadata:

charts/ingress-nginx/tests/controller-service-metrics_test.yaml

@@ -3,16 +3,34 @@ templates:
   - controller-service-metrics.yaml
 
 tests:
-  - it: should not create a metrics Service if `controller.metrics.enabled` is false
+  - it: should not create a metrics Service if `controller.metrics.enabled` is false and `controller.metrics.service.enabled` is false
     set:
       controller.metrics.enabled: false
+      controller.metrics.service.enabled: false
     asserts:
       - hasDocuments:
           count: 0
 
-  - it: should create a metrics Service if `controller.metrics.enabled` is true
+  - it: should not create a metrics Service if `controller.metrics.enabled` is false and `controller.metrics.service.enabled` is true
+    set:
+      controller.metrics.enabled: false
+      controller.metrics.service.enabled: true
+    asserts:
+      - hasDocuments:
+          count: 0
+
+  - it: should not create a metrics Service if `controller.metrics.enabled` is true and `controller.metrics.service.enabled` is false
+    set:
+      controller.metrics.enabled: true
+      controller.metrics.service.enabled: false
+    asserts:
+      - hasDocuments:
+          count: 0
+
+  - it: should create a metrics Service if `controller.metrics.enabled` is true and `controller.metrics.service.enabled` is true
     set:
       controller.metrics.enabled: true
+      controller.metrics.service.enabled: true
     asserts:
       - hasDocuments:
           count: 1

charts/ingress-nginx/values.yaml

@@ -844,6 +844,8 @@ controller:
     # if this port is changed, change healthz-port: in extraArgs: accordingly
     enabled: false
     service:
+      # -- Enable the metrics service or not.
+      enabled: true
       annotations: {}
       # prometheus.io/scrape: "true"
       # prometheus.io/port: "10254"