feat(helm): add option to add annotations to headless service (#4451)

Author: wind0r

operations/pyroscope/helm/pyroscope/README.md

@@ -89,6 +89,7 @@
 | pyroscope.resources | object | `{}` |  |
 | pyroscope.securityContext | object | `{}` |  |
 | pyroscope.service.annotations | object | `{}` |  |
+| pyroscope.service.headlessAnnotations | object | `{}` |  |
 | pyroscope.service.port | int | `4040` |  |
 | pyroscope.service.port_name | string | `"http2"` |  |
 | pyroscope.service.scheme | string | `"HTTP"` |  |

operations/pyroscope/helm/pyroscope/templates/services.yaml

@@ -52,9 +52,15 @@ metadata:
   labels:
     {{- include "pyroscope.labels" . | nindent 4 }}
     app.kubernetes.io/component: {{ $component | quote }}
+  {{- if or .Values.serviceMonitor.enabled $values.service.headlessAnnotations }}
+  annotations:
     {{- if .Values.serviceMonitor.enabled }}
     prometheus.io/service-monitor: "false"
     {{- end }}
+    {{- with $values.service.headlessAnnotations }}
+    {{- toYaml . | nindent 4 }}
+    {{- end }}
+  {{- end }}
 spec:
   type: ClusterIP
   clusterIP: None

operations/pyroscope/helm/pyroscope/values.yaml

@@ -88,6 +88,7 @@ pyroscope:
     port_name: http2
     scheme: HTTP
     annotations: {}
+    headlessAnnotations: {}
 
   memberlist:
     port: 7946

operations/pyroscope/jsonnet/values.json

@@ -444,6 +444,7 @@
     "securityContext": {},
     "service": {
       "annotations": {},
+      "headlessAnnotations": {},
       "port": 4040,
       "port_name": "http2",
       "scheme": "HTTP",