diff --git a/cloud_init.cfg b/cloud_init.cfg
index 5266096..a275117 100644
--- a/cloud_init.cfg
+++ b/cloud_init.cfg
@@ -26,6 +26,10 @@ chpasswd:
 hostname: ${hostname}
 fqdn: ${hostname}
 
+package_update: true
+package_upgrade: true
+package_reboot_if_required: true
+
 %{ if install-qemu-agent }
 packages:
   # This are only necessary for libvirt.
diff --git a/example.tfvars b/example.tfvars
index 2131e2e..3f54d49 100644
--- a/example.tfvars
+++ b/example.tfvars
@@ -19,17 +19,6 @@ node-vcpus = 2
 # 12 GiB
 # libvirt-node-disk-size = "${12 * 1073741824}"
 
-################################################################################
-# AWS EC2 instance types
-################################################################################
-
-# 1 GiB, 1 vcpu, only one that is free.
-# This one won't work with k8s because it requires at least 2 vcpus.
-aws-ec2-instance-type = "t2.micro"
-
-# 4 GiB, 2 vcpus
-# aws-ec2-instnce-type = "t2.medium"
-
 ################################################################################
 # AWS images (AMIs)
 ################################################################################
diff --git a/main.tf b/main.tf
index ba9a35f..d6f4495 100644
--- a/main.tf
+++ b/main.tf
@@ -1,14 +1,26 @@
 
 locals {
   nodes-config = {
-    "master" = {
+    "k8s-master" = {
       base-image = var.ubuntu-ami
-      num = 1
+      aws-ec2-type = var.t2-medium-4gib-2vcpu
+      num = 0
+    },
+    "k8s-worker" = {
+      base-image = var.ubuntu-ami
+      aws-ec2-type = var.t2-medium-4gib-2vcpu
+      num = 0
     },
-    "worker" = {
+    "ansible-test" = {
       base-image = var.ubuntu-ami
-      num = 2
-    }
+      aws-ec2-type = var.t2-micro-1gib-1vcpu
+      num = 0
+    },
+    "nfs" = {
+      base-image = var.ubuntu-ami
+      aws-ec2-type = var.t2-micro-1gib-1vcpu
+      num = 1
+    },
   }
   install-qemu-agent = false
 }
@@ -80,12 +92,13 @@ module "nodes" {
   for_each           = local.nodes-config
   source             = "./modules/aws-nodes"
   ami                = each.value.base-image
-  ec2-instance-type  = var.aws-ec2-instance-type
   subnet-id          = module.aws-network-existing.k8s-subnets-ids[0]
   security-group-ids = [module.aws-network-existing.default-sg.id]
   user-datas         = lookup(module.cloud-init-config, each.key, null).user-datas
   num-nodes          = each.value.num
   name-prefix        = "${var.vm-name-prefix}-${each.key}"
+  # TODO add a input for the key so that it will show up as the key in the aws
+  # console.
 }
 
 ################################################################################
diff --git a/variables.tf b/variables.tf
index fed0de5..a9bb332 100644
--- a/variables.tf
+++ b/variables.tf
@@ -4,11 +4,6 @@ variable "admin-ips" {
   type = list(string)
 }
 
-variable "aws-ec2-instance-type" {
-  default = "t2.micro"
-  description = "The AWS instance type to use for all nodes."
-}
-
 variable "aws-existing-sg-name" {
   default = "change-me-if-using-aws-network-existing"
   description = "The name of the existing security group when using aws-network-existing."
@@ -101,7 +96,7 @@ variable "vm-name-prefix" {
 
 ################################################################################
 # AWS AMI vars
-# These variables are really mor like constants. Using variables improves
+# These variables are really more like constants. Using variables improves
 # readability. The defaults are manually updated. Use the aws-amis module to get
 # the latest for each distro.
 ################################################################################
@@ -150,9 +145,35 @@ variable "rhel8-ami" {
   description = "The AMI to use for RHEL 8."
 }
 
+################################################################################
+# AWS EC2 types.
+# These variables are really more like constants. Using variables improves
+# readability.
+################################################################################
+
+variable "t2-micro-1gib-1vcpu" {
+  description = "t2.micro EC2 instance with 1 GiB mem and 1 vCPU."
+  default = "t2.micro"
+}
+
+variable "t2-medium-4gib-2vcpu" {
+  description = "t2.medium EC2 instance with 4 GiB mem and 2 vCPUs."
+  default = "t2.medium"
+}
+
+variable "t2-large-8gib-2vcpu" {
+  description = "t2.large EC2 instance with 8 GiB mem and 2 vCPUs."
+  default = "t2.large"
+}
+
+variable "t2-xlarge-16gib-4vcpu" {
+  description = "t2.xlarge EC2 instance with 16 GiB mem and 4 vCPUs."
+  default = "t2.xlarge"
+}
+
 ################################################################################
 # Libvirt Images
-# These variables are really mor like constants. Using variables improves
+# These variables are really more like constants. Using variables improves
 # readability. The defaults are manually updated.
 ################################################################################