[grafana] Add support for spec.trafficDistribution in Service (#70)

* feat: add grafana traffic distribution support

Signed-off-by: Nathan Mittelette <mittelette.nathan@gmail.com>

* Apply suggestion from @jkroepke

Signed-off-by: Jan-Otto Kröpke <mail@jkroepke.de>

---------

Signed-off-by: Nathan Mittelette <mittelette.nathan@gmail.com>
Signed-off-by: Jan-Otto Kröpke <mail@jkroepke.de>
Co-authored-by: Jan-Otto Kröpke <mail@jkroepke.de>

Author: nathan-mittelette

charts/grafana/Chart.yaml

@@ -1,6 +1,6 @@
 apiVersion: v2
 name: grafana
-version: 11.0.1
+version: 11.1.0
 # renovate: docker=docker.io/grafana/grafana
 appVersion: 12.3.2
 kubeVersion: "^1.25.0-0"

charts/grafana/README.md

@@ -298,6 +298,7 @@ The minimum required Kubernetes version is now 1.25. All references to deprecate
 | service.portName | string | `"service"` |  |
 | service.sessionAffinity | string | `""` |  |
 | service.targetPort | int | `3000` |  |
+| service.trafficDistribution | string | `""` |  |
 | service.type | string | `"ClusterIP"` |  |
 | serviceAccount.automountServiceAccountToken | bool | `false` |  |
 | serviceAccount.create | bool | `true` |  |

charts/grafana/templates/service.yaml

@@ -51,6 +51,9 @@ spec:
   {{- with .Values.service.sessionAffinity }}
   sessionAffinity: {{ . }}
   {{- end }}
+  {{- with .Values.service.trafficDistribution }}
+  trafficDistribution: {{ . }}
+  {{- end }}
   ports:
     - name: {{ .Values.service.portName }}
       port: {{ .Values.service.port }}

charts/grafana/values.yaml

@@ -250,6 +250,9 @@ service:
   # Adds the appProtocol field to the service. This allows to work with istio protocol selection. Ex: "http" or "tcp"
   appProtocol: ""
   sessionAffinity: ""
+  # trafficDistribution allows specifying how traffic is distributed to Service endpoints.
+  # Valid values: "" (default - standard load balancing),"PreferSameZone" (K8s 1.34+), "PreferSameNode" (K8s 1.35+), "PreferClose" (deprecated, use PreferSameZone),
+  trafficDistribution: ""
 
 serviceMonitor:
   ## If true, a ServiceMonitor CR is created for a prometheus operator