Added proxy and ZFS drives.

get-vm-ips.sh

@@ -92,7 +92,7 @@ for GROUP in $ANS_GROUPS; do
             sed 's/-/_/g'
         )"
     # Print the contents of $VARS converted to uppercase. If it's not expty.
-    if [ ! -z $VARS ]; then
+    if [ ! -z "$VARS" ]; then
         echo "${VARS^^}"
     fi
 done

main.tf

@@ -1,12 +1,16 @@
 
 locals {
   k8s-subnets-ids = [
+    # module.aws-network-from-scratch.subnet.id,
     module.aws-network-existing.subnet-by-name["subnet_1"].id,
     module.aws-network-existing.subnet-by-name["subnet_3"].id,
   ]
   nfs-subnets = [
+    # module.aws-network-from-scratch.subnet,
     module.aws-network-existing.subnet-by-name["subnet_4"],
   ]
+  aws-security-group-id = module.aws-network-existing.default-sg.id
+  # aws-security-group-id = module.aws-network-from-scratch.default-security-group.id
   nodes-config = {
     "k8s-master" = {
       base-image = var.ubuntu-ami
@@ -23,14 +27,26 @@ locals {
     "ansible-test" = {
       base-image = var.ubuntu-ami
       aws-ec2-type = var.t2-micro-1gib-1vcpu
+      # subnet-ids = [module.aws-network-from-scratch.subnet.id]
       subnet-ids = [module.aws-network-existing.subnet-by-name["subnet_2"].id]
       num = 0
     },
     "nfs" = {
       base-image = var.ubuntu-ami
       aws-ec2-type = var.t2-micro-1gib-1vcpu
+      # subnet-ids = [module.aws-network-from-scratch.subnet.id]
       subnet-ids = [module.aws-network-existing.subnet-by-name["subnet_4"].id]
       num = 1
+      num-disks = 1
+      disk-size = 10
+    },
+    "proxy" = {
+      base-image = var.ubuntu-ami
+      aws-ec2-type = var.t2-micro-1gib-1vcpu
+      # subnet-ids = [module.aws-network-from-scratch.subnet.id]
+      subnet-ids = [module.aws-network-existing.subnet-by-name["subnet_4"].id]
+      private-ips = [var.aws-proxy-private-ip]
+      num = 1
     },
   }
   install-qemu-agent = false
@@ -103,25 +119,33 @@ resource "aws_key_pair" "key" {
 resource "aws_ebs_volume" "zfs" {
   # TODO REM look at types.
   availability_zone = local.nfs-subnets[0].availability_zone
-  size = 10
-  encrypted = false
+  size = local.nodes-config["nfs"].disk-size
+  encrypted = true
+  count = local.nodes-config["nfs"].num-disks
   tags = {
-    Name = "zfs-disk"
+    Name = "zfs-disk-${count.index}"
   }
 }
 
 resource "aws_volume_attachment" "mount-nfs-volume" {
-  device_name = "/dev/sdf"
+  device_name = "/dev/sd${element(var.aws-zfs-drive-letters, count.index)}"
   instance_id = module.nodes["nfs"].nodes[0].id
-  volume_id = aws_ebs_volume.zfs.id
+  count = local.nodes-config["nfs"].num-disks
+  volume_id = element(aws_ebs_volume.zfs, count.index).id
+}
+
+output "zfs-drive-letters" {
+  value = aws_volume_attachment.mount-nfs-volume.*.device_name
 }
 
 module "nodes" {
   for_each           = local.nodes-config
   source             = "./modules/aws-nodes"
+  ec2-instance-type  = each.value.aws-ec2-type
   ami                = each.value.base-image
   subnet-ids         = each.value.subnet-ids
-  security-group-ids = [module.aws-network-existing.default-sg.id]
+  private-ips        = try(each.value.private-ips, [])
+  security-group-ids = [local.aws-security-group-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}"

modules/aws-nodes/main.tf

@@ -4,6 +4,9 @@ resource "aws_instance" "nodes" {
   # TODO Make this a variable.
   associate_public_ip_address = true
   subnet_id = element(var.subnet-ids, count.index % length(var.subnet-ids))
+  # Set a private IP if var.private-ips is not empty, otherwise let AWS assign
+  # the IP.
+  private_ip = length(var.private-ips) == 0 ? null : element(var.private-ips, count.index)
   vpc_security_group_ids = var.security-group-ids
   user_data = element(var.user-datas.*.rendered, count.index)
   count                       = var.num-nodes

modules/aws-nodes/variables.tf

@@ -21,6 +21,12 @@ variable "num-nodes" {
   type = number
 }
 
+variable "private-ips" {
+  default = []
+  description = "A list of private IP addresses to use for the nodes. If the list is empty then each node will get an IP assigned from AWS."
+  type = list(string)
+}
+
 variable "user-datas" {
   description = "A list of cloud-init configs that get applied to their corresponding node."
 }

providers.tf

@@ -1,20 +1,21 @@
 
 provider "aws" {
-  region = "us-gov-west-1"
+  region = var.aws-region
+  # profile = <aws cli profile>
 }
 
 
 terraform {
   required_version = ">= 1.0.8"
 
-    backend "s3" {
-      
-      bucket            = "mss-terraform-state"
-      key               = "global/s3/terraform.tfstate"
-      region            = "us-gov-west-1"
-      
-      dynamodb_table    = "mss-terraform-state-lock"
-      encrypt           = true
+  backend "s3" {
+    
+    bucket            = "mss-terraform-state"
+    key               = "global/s3/terraform.tfstate"
+    region            = "us-gov-west-1"
+    
+    dynamodb_table    = "mss-terraform-state-lock"
+    encrypt           = true
 
   }
   required_providers {
@@ -73,4 +74,4 @@ resource "aws_dynamodb_table" "terraform_locks" {
 output "s3_bucket_arn" {
   value       = aws_s3_bucket.terraform_state.arn
   description = "The ARN of the S3 bucket"
-}
+}

variables.tf

@@ -4,13 +4,19 @@ variable "admin-ips" {
   type = list(string)
 }
 
+variable "aws-zfs-drive-letters" {
+  default     = ["f", "g", "h", "i", "j"]
+  description = "These are the drove letters to use when attaching EBS volumes, ie. /dev/sdf or /dev/sdg"
+  type        = list(string)
+}
+
 variable "aws-existing-sg-name" {
-  default = "change-me-if-using-aws-network-existing"
+  default     = "change-me-if-using-aws-network-existing"
   description = "The name of the existing security group when using aws-network-existing."
 }
 
 variable "aws-existing-vpc-name" {
-  default = "change-me-if-using-aws-network-existing"
+  default     = "change-me-if-using-aws-network-existing"
   description = "The name of the existing VPC when using aws-network-existing."
 }
 
@@ -20,6 +26,11 @@ variable "aws-existing-subnet-names" {
   type        = list(string)
 }
 
+variable "aws-proxy-private-ip" {
+  description = "The private IP to request for the proxy instance."
+  type        = string
+}
+
 variable "aws-region" {
   default = "us-east-1"
   description = "The AWS region to use."