Merge pull request #1 from relaxdiego/changes

Multi-Region AMIs and  terraform.tvars example file

terraform/etcf.tf

@@ -4,7 +4,7 @@
 
 resource "aws_instance" "etcd" {
     count = 3
-    ami = "${var.default_ami}"
+    ami = "${lookup(var.amis, var.region)}"
     instance_type = "${var.etcd_instance_type}"
 
     subnet_id = "${aws_subnet.kubernetes.id}"

terraform/k8s_controllers.tf

@@ -5,7 +5,7 @@
 resource "aws_instance" "controller" {
 
     count = 3
-    ami = "${var.default_ami}"
+    ami = "${lookup(var.amis, var.region)}"
     instance_type = "${var.controller_instance_type}"
 
     iam_instance_profile = "${aws_iam_instance_profile.kubernetes.id}"

terraform/terraform.tfvars.example

@@ -0,0 +1,20 @@
+/*
+   DO NOT EDIT terraform.tfvars.example! Copy it instead to
+   terraform.tfvars and edit that file.
+*/
+
+/* Required variables */
+default_keypair_public_key = "CONTENTS OF YOUR PUBLIC KEY HERE"
+control_cidr = "CIDR OF MACHINE RUNNING TERRAFORM HERE"
+
+/* Optional. Set as desired */
+/* region = "us-west-2" */
+/* zone = "us-west-2a" */
+
+/*
+   If your chosen region above doesn't have a corresponding ami
+   in the "amis" variable (found in variables.tf), you can
+   override the default below.
+*/
+
+/* amis = { us-west-2 = "ami-123456" } */

terraform/variables.tf

@@ -52,9 +52,20 @@ variable kubernetes_pod_cidr {
 
 
 # Instances Setup
-variable default_ami {
-  description = "Default AMI for all nodes"
-  default = "ami-1967056a" // Unbuntu 16.04 LTS HVM, EBS-SSD
+variable amis {
+  description = "Default AMIs to use for nodes depending on the region"
+  type = "map"
+  default = {
+    ap-northeast-1 = "ami-0567c164"
+    ap-southeast-1 = "ami-a1288ec2"
+    cn-north-1 = "ami-d9f226b4"
+    eu-central-1 = "ami-8504fdea"
+    eu-west-1 = "ami-0d77397e"
+    sa-east-1 = "ami-e93da085"
+    us-east-1 = "ami-40d28157"
+    us-west-1 = "ami-6e165d0e"
+    us-west-2 = "ami-a9d276c9"
+  }
 }
 variable default_instance_user {
   default = "ubuntu"

terraform/workers.tf

@@ -5,7 +5,7 @@
 
 resource "aws_instance" "worker" {
     count = 3
-    ami = "${var.default_ami}"
+    ami = "${lookup(var.amis, var.region)}"
     instance_type = "${var.worker_instance_type}"
 
     subnet_id = "${aws_subnet.kubernetes.id}"