Merge pull request #17 from goci-io/improvements

making replicas configureable, create pdb only when using 1 replica

defaults.yaml

@@ -3,6 +3,7 @@ txtOwnerId: ${owner_id}
 interval: 2m
 provider: aws
 policy: ${update_policy}
+replicas: ${replicas}
 sources:
 - ingress
 

release.tf

@@ -14,6 +14,7 @@ resource "helm_release" "external_dns" {
   values = [
     templatefile("${path.module}/defaults.yaml", {
       domains             = var.domains
+      replicas            = var.replicas
       aws_region          = var.aws_region
       update_policy       = var.update_records_policy
       iam_role_arn        = local.iam_role_arn
@@ -28,6 +29,8 @@ resource "helm_release" "external_dns" {
 }
 
 resource "kubernetes_pod_disruption_budget" "allow_unavailable" {
+  count = var.replicas == 1 ? 1 : 0
+
   metadata {
     name      = var.name
     namespace = var.k8s_namespace

variables.tf

@@ -134,3 +134,9 @@ variable "is_private_zone" {
   default     = false
   description = "Type of the hosted zones specified in domains"
 }
+
+variable "replicas" {
+  type        = number
+  default     = 1
+  description = "Amount of Replicas for External-DNS. When set to 1 we also create a PodDisruptionBudget"
+}