new toggle to use internal ELB by default

docs/administrator.md

@@ -400,6 +400,11 @@ services:
   config parameter `custom_service_annotations` or the  cluster parameter
   `serviceAnnotations`.
 
+If `enable_public_load_balancer` is disabled (default) another annotation is
+added to indicate the usage of an internal ELB:
+
+- `service.beta.kubernetes.io/aws-load-balancer-internal: "true"`
+
 To limit the range of IP addresses that can reach a load balancer, specify the
 desired ranges in the `allowedSourceRanges` field (applies to both master and
 replica load balancers). To prevent exposing load balancers to the entire

docs/reference/cluster_manifest.md

@@ -82,6 +82,11 @@ These parameters are grouped directly under  the `spec` key in the manifest.
   `enable_replica_load_balancer` parameter) to define whether to enable the
   load balancer pointing to the Postgres standby instances. Optional.
 
+* **enablePublicLoadBalancer**
+  boolean flag to override the operator defaults (set by the
+  `enable_public_load_balancer` parameter) to define whether to use an internal
+  or public ELB. Optional.
+
 * **allowedSourceRanges**
   when one or more load balancers are enabled for the cluster, this parameter
   defines the comma-separated range of IP networks (in CIDR-notation). The
@@ -231,10 +236,10 @@ explanation of `ttl` and `loop_wait` parameters.
 
 * **synchronous_mode**
   Patroni `synchronous_mode` parameter value. The default is set to `false`. Optional.
-  
+
 * **synchronous_mode_strict**
   Patroni `synchronous_mode_strict` parameter value. Can be used in addition to `synchronous_mode`. The default is set to `false`. Optional.
-  
+
 ## Postgres container resources
 
 Those parameters define [CPU and memory requests and limits](https://kubernetes.io/docs/concepts/configuration/manage-compute-resources-container/)

docs/reference/operator_parameters.md

@@ -411,13 +411,17 @@ In the CRD-based configuration they are grouped under the `load_balancer` key.
 
 * **enable_master_load_balancer**
   toggles service type load balancer pointing to the master pod of the cluster.
-  Can be overridden by individual cluster settings. The default is `true`.
+  Can be overridden by individual cluster settings. The default is `false`.
 
 * **enable_replica_load_balancer**
   toggles service type load balancer pointing to the replica pod of the
   cluster.  Can be overridden by individual cluster settings. The default is
   `false`.
 
+* **enable_public_load_balancer**
+  when using load balancer services they can be internal or public which can be
+  toggled with this option. The default is `false`.  
+
 * **custom_service_annotations**
   This key/value map provides a list of annotations that get attached to each
   service of a cluster created by the operator. If the annotation key is also