readme updates + t2.medium worker nodes

eks-demo/README.md

@@ -2,6 +2,14 @@
 
 See https://www.terraform.io/docs/providers/aws/guides/eks-getting-started.html for full guide
 
+
+## Download kubectl
+```
+curl -LO https://storage.googleapis.com/kubernetes-release/release/$(curl -s https://storage.googleapis.com/kubernetes-release/release/stable.txt)/bin/linux/amd64/kubectl
+chmod +x kubectl
+sudo mv kubectl /usr/local/bin
+```
+
 ## Download the aws-iam-authenticator
 ```
 wget https://github.com/kubernetes-sigs/aws-iam-authenticator/releases/download/v0.3.0/heptio-authenticator-aws_0.3.0_linux_amd64

eks-demo/eks-workers.tf

@@ -42,7 +42,7 @@ resource "aws_launch_configuration" "demo" {
   associate_public_ip_address = true
   iam_instance_profile        = "${aws_iam_instance_profile.demo-node.name}"
   image_id                    = "${data.aws_ami.eks-worker.id}"
-  instance_type               = "m4.large"
+  instance_type               = "t2.medium"
   name_prefix                 = "terraform-eks-demo"
   security_groups             = ["${aws_security_group.demo-node.id}"]
   user_data_base64            = "${base64encode(local.demo-node-userdata)}"