DNS and hosts are setup. Next step is the SSH keys and unattended ins…

…tallation.

README.md

@@ -70,3 +70,8 @@ You'll be paying for:
 
  - https://www.udemy.com/openshift-enterprise-installation-and-configuration - The basic structure of the network is based on this course.
  - https://blog.openshift.com/openshift-container-platform-reference-architecture-implementation-guides/ - Detailed guide on high available solutions, including production grade AWS setup.
+
+## TODO
+
+- [ ] Consider whether it is needed to script elastic IPs for the instances and DNS.
+- [ ] Test whether the previously registered domain name is actually forwarding to the public DNS.

main.tf

@@ -4,7 +4,7 @@ provider "aws" {
 }
 
 //  Create the OpenShift cluster using our module.
-module "consul-cluster" {
+module "openshift" {
   source          = "./modules/openshift"
   region          = "${var.region}"
   amisize         = "t2.large"    //  Smallest that meets the min specs for OS
@@ -13,4 +13,16 @@ module "consul-cluster" {
   subnet_cidr     = "10.0.1.0/24"
   key_name        = "openshift"
   public_key_path = "${var.public_key_path}"
+  public_domain   = "${var.public_domain}"
+}
+
+//  Output some useful variables for quick SSH access etc.
+output "master-dns" {
+  value = "${module.openshift.master-dns}"
+}
+output "node1-dns" {
+  value = "${module.openshift.node1-dns}"
+}
+output "node2-dns" {
+  value = "${module.openshift.node2-dns}"
 }

modules/openshift/00-variables.tf

@@ -26,3 +26,7 @@ variable "key_name" {
 variable "public_key_path" {
   description = "The local public key path, e.g. ~/.ssh/id_rsa.pub"
 }
+
+variable "public_domain" {
+  description = "The public domain for the cluster, e.g: openshifting.com"
+}

modules/openshift/04-dns.tf

@@ -0,0 +1,75 @@
+//  Notes: We could make the internal domain a variable, but not sure it is
+//  really necessary.
+
+//  Create the internal DNS.
+resource "aws_route53_zone" "internal" {
+  name = "openshift.local"
+  comment = "OpenShift Cluster Internal DNS"
+  vpc_id = "${aws_vpc.openshift.id}"
+  tags {
+    Name    = "OpenShift Internal DNS"
+    Project = "openshift"
+  }
+}
+
+//  Routes for 'master', 'node1' and 'node2'.
+resource "aws_route53_record" "master-a-record" {
+    zone_id = "${aws_route53_zone.internal.zone_id}"
+    name = "master.openshift.local"
+    type = "A"
+    ttl  = 300
+    records = [
+        "${aws_instance.master.private_ip}"
+    ]
+}
+resource "aws_route53_record" "node1-a-record" {
+    zone_id = "${aws_route53_zone.internal.zone_id}"
+    name = "node1.openshift.local"
+    type = "A"
+    ttl  = 300
+    records = [
+        "${aws_instance.node1.private_ip}"
+    ]
+}
+resource "aws_route53_record" "node2-a-record" {
+    zone_id = "${aws_route53_zone.internal.zone_id}"
+    name = "node2.openshift.local"
+    type = "A"
+    ttl  = 300
+    records = [
+        "${aws_instance.node2.private_ip}"
+    ]
+}
+
+//  Create the external DNS.
+resource "aws_route53_zone" "external" {
+  name = "${var.public_domain}"
+  comment = "OpenShift Cluster External DNS"
+
+  tags {
+    Name    = "OpenShift External DNS"
+    Project = "openshift"
+  }
+}
+
+//  Create a record to hit the master node via 'console.<domain>'.
+resource "aws_route53_record" "master-console-a-record" {
+    zone_id = "${aws_route53_zone.external.zone_id}"
+    name = "console.${var.public_domain}"
+    type = "A"
+    ttl  = 300
+    records = [
+        "${aws_instance.master.public_ip}"
+    ]
+}
+
+//  Also add a wildcard - this'll be for services etc.
+resource "aws_route53_record" "master-wildcard-a-record" {
+    zone_id = "${aws_route53_zone.external.zone_id}"
+    name = "*.${var.public_domain}"
+    type = "A"
+    ttl  = 300
+    records = [
+        "${aws_instance.master.public_ip}"
+    ]
+}

modules/openshift/99-outputs.tf

@@ -0,0 +1,10 @@
+//  Output some useful variables for quick SSH access etc.
+output "master-dns" {
+  value = "${aws_instance.master.public_dns}"
+}
+output "node1-dns" {
+  value = "${aws_instance.node1.public_dns}"
+}
+output "node2-dns" {
+  value = "${aws_instance.node2.public_dns}"
+}