DX-15647: enable VPC internal loadbalancer IP

Change-Id: I73a66d0020b5f61abf08de6c0b2b0a1bf17fc663

Author: Nirmalya Sen

charts/dremio/templates/dremio-service-client.yaml

@@ -4,6 +4,15 @@ metadata:
   name: dremio-client
   labels:
     app: dremio-client
+  {{- if .Values.internalLoadBalancer }}
+  {{- if eq .Values.internalLoadBalancer true }}
+  annotations:
+    service.beta.kubernetes.io/azure-load-balancer-internal: "true"
+    cloud.google.com/load-balancer-type: "Internal"
+    service.beta.kubernetes.io/aws-load-balancer-internal: 0.0.0.0/0
+    service.beta.kubernetes.io/openstack-internal-load-balancer: "true"
+  {{- end }}
+  {{- end }}
 spec:
   ports:
   - port: {{ .Values.coordinator.client.port | default 31010 }}

charts/dremio/values.yaml

@@ -27,6 +27,12 @@ serviceType: LoadBalancer
 # you have one or more coordinators, enable it
 #sessionAffinity: ClientIP
 
+# Enable the following flag if you wish to route traffic through a shared VPC
+# for the LoadBalancer's external IP.
+# The chart is setup for internal IP support for AKS, EKS, GKE.
+# For more information, see https://kubernetes.io/docs/concepts/services-networking/service/#internal-load-balancer
+#internalLoadBalancer: true
+
 # To use custom storage class, uncomment and provide the value here.
 # Otherwise the default storage class configured for your K8S cluster is used.
 #storageClass: managed-premium