feat: Provide capability to configure DNS suffix for ingress controll…

…er (#258)

Signed-off-by: Tom Kerkhove <[email protected]>

helm-charts/azure-api-management-gateway/README.md

@@ -135,6 +135,11 @@ their default values.
 | `ingress.tls` | Configuration for TLS on the ingress | None |
 | `ingress.ingressClassName` | Configuration of the ingress class to be used | |
 | `ingress.useHttpsBackend` | Indication whether or not the https port of the service should be used | `false` |
+| `ingress.controller.enabled` | Indication whether or not Self-Hosted gateway should act as an Ingress controller. ([experimental feature])(https://github.com/Azure/api-management-self-hosted-gateway-ingress) | `false` |
+| `ingress.controller.namespace` | Kubernetes namespace to watch. ([experimental feature])(https://github.com/Azure/api-management-self-hosted-gateway-ingress) | `default` |
+| `ingress.controller.annotations` | Indication whether or not Self-Hosted gateway should act as an Ingress controller. ([experimental feature])(https://github.com/Azure/api-management-self-hosted-gateway-ingress) | `[]` |
+| `ingress.controller.dns.suffix` | DNS suffix to use to build Kubernetes hostname for services inside the cluster. ([experimental feature])(https://github.com/Azure/api-management-self-hosted-gateway-ingress) | `svc.cluster.local` |
+| `ingress.controller.ingressClass.annotations` | Annotationts to apply to ingress class ([experimental feature])(https://github.com/Azure/api-management-self-hosted-gateway-ingress) | `[]`|
 | `serviceAccountName` | Configuration of the serviceAccountName used | default |
 | `highAvailability.enabled` | Indication whether or not the gateway should be scheduled highly available in the cluster. | `false` |
 | `highAvailability.disruption.maximumUnavailable` | Amount of pods that are allowed to be unavailable due to [voluntary disruptions](https://kubernetes.io/docs/concepts/workloads/pods/disruptions/#voluntary-and-involuntary-disruptions). | `25%` |

helm-charts/azure-api-management-gateway/templates/configmap.yaml

@@ -22,6 +22,7 @@ data:
 {{- if .Values.ingress.controller.enabled }}
   k8s.ingress.enabled : {{ .Values.ingress.controller.enabled | quote }}
   k8s.ingress.namespace : {{ .Values.ingress.controller.namespace | default ( .Release.Namespace ) | quote }}
+  k8s.ingress.dns.suffix: {{ .Values.ingress.controller.dns.suffix | quote }}
 {{- end }}
   telemetry.metrics.cloud: {{ .Values.observability.azureMonitor.metrics.enabled | quote }}
   telemetry.logs.std: {{ .Values.observability.logs.std.format | quote }}

helm-charts/azure-api-management-gateway/values.yaml

@@ -132,6 +132,8 @@ ingress:
     enabled: false
     namespace: ""
     annotations: []
+    dns:
+      suffix: "svc.cluster.local"
     ingressClass:    
       controller: "azure-api-management/gateway"
       annotations: []