Merge pull request #5 from Snowflake-Labs/add-enable-dns-flag

Fix multiple eks clusters break same DNS zone

Author: sfc-gh-bkou

helm_external_dns.tf

@@ -18,6 +18,7 @@ resource "helm_release" "external_dns" {
         external_dns_eks_service_account = "${aws_iam_role.external_dns_role[0].name}",
         aws_iam_role_external_dns        = "${aws_iam_role.external_dns_role[0].name}",
         aws_iam_role_external_dns_arn    = "${aws_iam_role.external_dns_role[0].arn}",
+        eks_cluster_id                   = "${module.eks.cluster_id}",
       }
     )
   ]

helm_external_dns_private.tf

@@ -17,6 +17,7 @@ resource "helm_release" "external_dns_private" {
         external_dns_eks_service_account = "${aws_iam_role.external_dns_private_role[0].name}",
         aws_iam_role_external_dns        = "${aws_iam_role.external_dns_private_role[0].name}",
         aws_iam_role_external_dns_arn    = "${aws_iam_role.external_dns_private_role[0].arn}",
+        eks_cluster_id                   = "${module.eks.cluster_id}",
       }
     )
   ]

templates/external_dns_private_values.yaml

@@ -17,3 +17,4 @@ serviceAccount:
     eks.amazonaws.com/role-arn: ${aws_iam_role_external_dns_arn}
 zoneIdFilters: ["${aws_private_hosted_zone}"]
 annotationFilter: "alb.ingress.kubernetes.io/scheme=internal"
+txtOwnerId: ${eks_cluster_id}

templates/external_dns_values.yaml

@@ -17,3 +17,4 @@ serviceAccount:
     eks.amazonaws.com/role-arn: ${aws_iam_role_external_dns_arn}
 zoneIdFilters: ["${aws_public_hosted_zone}"]
 annotationFilter: "alb.ingress.kubernetes.io/scheme=internet-facing"
+txtOwnerId: ${eks_cluster_id}